Skip to main content

Full text of "Tektronix Manual: 564B"

See other formats


Tektronix, Inc. 

P.O. Box 500 
Beaverton, Oregon 

070-0804-00 
Product Group 42 



Ibktronix- 

COMMITTED TO EXCELLENCE 



PLEASE CHECK FOR CHANGE INFORMATION 
AT THE REAR OF THIS MANUAL. 



564B 

OSCILLOSCOPE 



INSTRUCTION MANUAL 



97077 



Serial Number 



First Printing SEP 1968 
Revised NOV 1 981 



CONTENTS 



Section 1 Specification 

Section 2 Operating Instructions 

Section 3 Circuit Description 

Section 4 Maintenance 

Section 5 Performance Check/Calibration 











at the rear of this manual. 






Type 564B 





Type 564B 



Type 564B 



SECTION I 

TYPE 564B SPECIFICATION 



Change information, if any, affecting this section will be found at the 
rear of the manual. 



Introduction 

The Type 564B Storage Oscilloscope is designed to store 
cathode-ray tube displays for viewing or photographing up 
to an hour after application of the input signal. In addition, 
the instrument can be operated as a conventional oscillo- 
scope, The Type 564B is compatible with Tektronix 2-Series 
and 3-Series plug-in units (see following table and Section 2 
for exceptions), thus it can be used in a variety of applica- 
tions including differential, multi-trace, wide-band, delayed 
sweep, sampling and spectrum analysis. 

The cathode-ray tube used in the Type 564B is a direct 
view, bistable storage tube having an 8X10 centimeter dis- 
play area, divided into two 4X10 cm storage screens. The 
storage screens are independently controlled for split screen 
applications. An additional area which does not store is 
provided to the left of the targets to function as a locate 
zone in the single-sweep store mode. 

This instrument will perform to the specifications listed in 
this section in a laboratory environment with ambient temp- 
erature range between 0°C and -fSO^C, except as indicated. 
Warmup time for rated accuracies is 5 minutes (certain plug- 
ins may require additional warmup time). The Performance 
Check instructions outlined in Section 5 provide a convenient 
method of checking the performance of this instrument. 



ELECTRICAL CHARACTERISTICS 

CRT 



Characteristic 


Performance 


Plug-in compatibility 


2- and 3-Series plug-ins, except the 
3S6, 3T6; 3B5 (horizontal only) 


CRT Type 


Electrostatic deflection 


Graticule Area 


8 XlOcm 


Phosphor 


Storage (similar to PI) 


Typical CRT 
Accelerating Voltage 


3.5 kV 



STORAGE DISPLAY 





T5641-200 


T5641-201 


Writing Speed 
Basic (Initial) 


At least 25 cm/ms 


At least 100 cm/ms 


Enhanced 


At least 250 cm/ms 


At least 500 cm/ms 



Luminance 

Initial 


At least 6 fL 


At least 2 fL 


Contrast Ratio 
Initial 


2:1 


2:1 


Storage Time 
(Recommended) 


One hour or less 


Erase Time 


250 ms or less 


Locate 


Displaces dot to preview area (left of 
graticule) and at the vertical position of 
the next sweep when sweep start is 
positioned to first graticule line 



EXTERNAL OUTPUTS 



Calibrator 
Output Voltage 
Into High Imped- 
ance (1 Mn or 
greater) 


H-4mV, +40 mV, +0.4 V, +4V, 
+40 V (ground to peak) square 
wave and 40 VDC; (within 1V2%/ 
+20** C to +30° C; within 2%, 
0° C to +50° C) 


Into 50.0 0 


+2 mV, +20 mV, +0.2 V (ground 
to peak) square wave; (within 1 V 2 %/ 
+20° C to +30° C; within 2%, 
0° C to +50° C) 


Current Loop 


10 mA DC or 10 mA (P-P) square 
wave (within 1V2%, +20° C to 
+30° C; within 2%, 0° C to +50° 
C) 


Frequency 


1 kHz within 1 % 


Duty Factor 


48 to 52% 


Risetime and Falltime 


1 fjLS or less at all voltages with 
load capacitance of 100 pF or less, 
except 40 V. 2.5 /xs or less at 40 V 
with load capacitance of lOOpF 



EXTERNAL INPUTS 



CRT Cathode (AC Coupled) 
Low — 3dB Frequency 


1 .8 kHz or less 


Z Axis Modulation 


10 V or less (P-P) gives useful 
intensity variation 


Maximum Input Voltage 


150 V 


Remote (Storage) Control 
Input 

Half Screen Erase 

Pulse Initiated Erase 


Negative pulse of 5 V to lOOV. 
Rate of change at least 0.1 V/jms 


Impedance Change 
Initiated Erase 


From 1 Mn to 50 kQ in 10 jms or 
less 






1-1 




Specification — Type 564B 



POWER SUPPLY 



Line Voltage Ranges 
Low 


115 VAC 
90 V to no V 


230 VAC 
180 V to 220 V 


Medium 


104 V to 126 V 


208 V to 252 V 


High 


112 V to 136 V 


224 V to 272 V 


Line Frequency Range 


48 to 440 Hz 


Maximum Power Con- 
sumption at 115 V, 

60 Hz 


196 W, 2.16 A 



ENVIRONMENTAL CHARACTERISTICS 



Characteristic 


Performance 


Temperature 

Non-operating 


-40‘*C to +65"C 


Operating 


0°C to +50"C 


Altitude 




Non-operating 


To 50,000 feet 


Operating 


To 15,000 feet 



Transportation 


18-inch package drop. Qualified 
under the National Safe Transit 
Committee test procedure lA. 


PHYSICAL 


Finish 


Blue vinyl painted rear panel and 
sides. Anodized aluminum front 
panel. 


Dimensions 

Height 


143/4 inches 


Width 


93/4 inches 


Length 


c::^ 2 iy 2 inches 


Weight 


^^31Y4 pounds 



Accessories 

Standard accessories supplied with the Type 564B are listed 
on the last pullout page of the Mechanical Parts List illus- 
trations. For optional accessories available for use with this 
instrument, see the current Tektronix, Inc. catalog. 




Fig. 1-2. Life data graphs of T5641-200 and T5641-201 storage tubes. 



1-2 



®T 






SECTION 2 

OPERATING INSTRUCTIONS 



Type 564B 



Change information, if any, affecting this section will be found at the 
rear of the manual. 



Introduction 

To effectively use the Type 564B/ the operation and capa- 
bilities of the instrument must be understood. This section of 
the manual describes the operation of the front- and rear- 
panel controls and connectors, and gives first time and gen- 
eral operating information. 



Line Voltage 

The Type 564B can be operated from either a 115-volt or a 
230-volt nominal line-voitage source. The Line Voltage Selec- 
tor assembly on the rear panel converts the instrument from 
one operating range to the other. In addition, this assembly 
changes the primary connections of the power transformer 
to allow selection of one of three regulating ranges. The 
assembly also includes two fuses to provide the correct pro- 
tection for the instrument; both fuses are connected for 230- 
volt nominal operation, and only one fuse is connected for 
115-volt nominal operation. Use the following procedure to 
obtain the proper line voltage and regulating range settings 
of the Line Voltage Selector. 

1. Disconnect the instrument from the power source. 

2. Loosen the two captive screws which hold the cover 
onto the voltage selector assembly; then pull to remove the 
cover. 

3. To convert from 115 volts nominal to 230 volts nominal 
line voltage, pull out the Voltage Selector switch bar (See 
Fig. 2-1); turn it around 180° and plug it back into the re- 




fuse 



(Bottom) 



Fig. 2-1. Line Voltage Selector assembly on the rear panel (shown 
with cover removed). 



maining holes. Change the line-cord power plug to match 
the power-source receptacle or use a 115-to 230-volt adapter. 

4. To change regulating ranges, pull out the Range Selec- 
tor switch bar (see Fig. 2-1); slide it to the desired position 
and plug it back in. Select a range which is centered about 
the average line voltage to which the instrument is to be 
connected (see Table 2-1). 

5. Re-install the cover and tighten the two captive screws. 

6. Before applying power to the instrument, check that 
the indicating tabs on the switch bars are protruding through 
the correct holes for the desired nominal line voltage and 
regulating range. 



CAUTION 

Damage to the instrument may result from incorrect 
Line Voltage Selector settings. 

TABLE 2-1 

Regulating Ranges 





Regulating Range 


Range Selector 
Switch Position 


115-Volts 

Nominal 


230-Volts 

Nominal 


LO (switch bar in 
left holes) 


90 to 110 volts 


180 to 220 volts 


M (switch bar in 
middle holes) 


104 to 126 volts 


208 to 252 volts 


HI (switch bar in 
right holes) 


112 to 136 volts 


224 to 272 volts 



Operating Temperature 

The Type 564B can be operated where the ambient air 
temperature is between 0°C and +50°C. The instrument can 
be stored in ambient temperatures between — 40 °C and 
4-65° C. After storage at a temperature beyond the oper- 
ating limits, allow the chassis temperature to come within 
the operating limits before power is applied. 

The Type 564B is cooled by convection air flow through 
the instrument. Adequate clearance on the top, bottom sides 
and rear must be provided to allow about two inches of 
clearance. Do not block or restrict the air flow from the 
ventilation holes in the cabinet. 

A thermal cutout in this instrument provides thermal protec- 
tion and disconnects the power to the instrument if the inter- 
nal temperature exceeds a safe operating level. This device 
will automatically re-apply power when the temperature 
returns to a safe level. 






2-1 







Operating Instructions — Type 564B 



SELECTION OF PLUG-IN UNITS 
General Information 

The Type 564B is designed to use Tektronix 2-series and 
3-series amplifier and time-base plug-in units for amplifying 
the vertical input signal and producing the time-base sweep. 
The use of plug-in units permits the selection of display 
modes, bandwidth, sensitivity and number of inputs so that 
the oscilloscope performance can be changed to meet chang- 
ing measurement needs. 

NOTE 

Programmable plug-ins 3S6 and 3T6 are not com- 
patible with the Type 564B, however the capa- 
bility of these plug-ins is available (without 
programmability) with Types 3S5 and 3T5. Use 
the 3B5 in the right-hand (horizontal) compart- 
ment only. Refer to the instruction manual of the 
plug-in unit for specific information. 

To install a plug-in unit in the Type 564B, push it all the 
way into the plug-in compartment, then turn the locking knob 
(at the bottom of the front panel) clockwise until it is tight. 
To remove the unit, turn the knob counterclockwise until the 
latch releases, then pull the unit out. 

The accuracy of measurements made with the Type 564B 
depends on the calibration of the plug-in units used. Since 
the plug-in units drive the deflection plates directly, each 
unit must be adjusted to match the deflection sensitivity of 
the particular CRT that it drives. Therefore, the gain or sweep 
timing adjustment must be checked each time a plug-in unit 
is changed. On most units, gain or timing calibration is made 
with a front-panel screwdriver adjustment. (Sampling units 
require special adjustment procedures.) Refer to the plug-in 
unit instruction manual for the required procedure. Since the 
various plug-in units present different output voltage levels 
to the deflection plates, the FOCUS and ASTIGMATISM 
controls will also require readjustment. 

Plug-in units can be changed without turning off the instru- 
ment power, but it is recommended that the power be turned 
off while the change is made. When the deflection and 
blanking voltage from the plug-in unit are disconnected 
from the oscilloscope (and during plug-in unit warmup), the 
spot that appears on the CRT screen may burn the storage 
target, even at normal intensity. 

CAUTION 

Always turn the INTENSITY control fully counter- 
clockwise while exchanging a plug-in unit, whether 
the power is left on or turned off. Increase the 
intensity only after the plug-in unit has had about 
Vi minute to warm up. 

Either or both of the plug-in units can be operated on 
special extension cables for troubleshooting. For normal 
operation, however, the units must be installed in the oscillo- 
scope. If the instrument is operated with the plug-in units on 
extension cables, the high-frequency response and fast sweep 
rates will be affected. 

Display Combinations 

The plug-in unit in the left plug-in compartment controls 
the vertical (Y-axis) deflection of the CRT beam and the 



unit in the right plug-in compartment controls the horizontal 
(X-axis) deflection. The following paragraphs discuss some 
of the display combinations that can Ido obtained. 

Time-Base Displays. To produce a conventional time- 
base, or Y-T display, an amplifier plug-in unit is used in 
the vertical (left) plug-in compartment and a time-base 
plug-in unit is used in the horizontal (right) plug-in compart- 
ment. 

If a vertical sweep is desired with the input signal dis- 
played horizontally, the time-base unit is inserted in the 
left compartment and the amplifier unit in the right com- 
partment. However, if a vertical sweep is used, there is no 
retrace blanking, no chopped blanking for multi-trace dis- 
plays, the delaying-sweep intensification does not operate 
and the LOCATE pushbuttons serves no useful function be- 
cause these circuits are associated with the horizontal (right) 
plug-in compartment. 

X-Y Disptays. Two amplifier units may be used to pro- 
duce either a single or a multiple X-Y display (for example, 
for phase comparison measurement). Plug-in units with equal 
phase shift will produce an accurate X-Y display; however, 
for high frequency X-Y operation, use of two units of the 
same type is recommended. Careful factory adjustment of de- 
flection-circuit capacitance to a standard value in the Type 
564B minimizes high-frequency phase-shift between two 
plug-in units of the same type. For multiple X-Y displays, 
both synchronization and automatic pairings are provided 
for some amplifier units. Refer to the instruction manual 
of the plug-in unit to be used. 

Multi-Trace Displays. The use of a dual-trace or multi- 
trace amplifier unit permits almost simultaneous display of 
two or more signals. For a multi-trace amplifier unit with 
single-channel trigger capability ("Channel 1 Trigger"), the 
trigger signal is applied through the Type 564B to the trigger 
circuit in the time-base unit. This permits triggering from a 
single input signal and the CRT display shows the time rela- 
tionship between the various signals. Without single-channel 
triggering, an external trigger is recommended to establish 
time relationship in multi-trace displays. In chopped mode, 
the multi-trace blanking pulses from the amplifier unit are 
applied internally through the Type 564B to the CRT cathode 
to blank the CRT beam while it is switched from one channel 
to another (with the amplifier unit in the left compartment and 
the time-base unit in the right compartment, and with the 
rear panel CRT CATHODE SELECTOR switch in the CHOP- 
PED BLANKING position). 

Delayed Sweep. A delayed-sweep time-base unit is con- 
venient for detailed viewing of pulse-train segments that 
occur a relatively long time after the maximum-amplitude 
(triggering) portion of the signal. The portion of the pulse 
train to be displayed by the delayed sweep may be intensi- 
fied on the delaying-sweep display. A delayed-sweep unit 
that has a calibrated time delay can also be used tor making 
very accurate (within 1 %) time measurements. 

Raster Generation. A raster display can be presented by 
using two time-base units, one in each compartment. Signal 
modulation can be achieved through the Z-axis of the CRT 
by applying the signal to the EXT INPUT connector on the 
rear panel and setting the CRT CATHODE SELECTOR to the 
EXT INPUT position. 




Operating Instructions— Type 564B 



Sampling. The apparent bandwidth of the oscilloscope can be 
increased to as much as one gigahertz through the use of sampling 
plug-in units. A sampling time-base unit must be used with a sam- 
pling amplifier unit in the Type 564B in order to produce the sam- 
pling display (even for X-Y operation). Generally, sampling and 
conventional plug-in units cannot be used together in the oscillo- 
scope. However, Type 3S1 and 3S2 sampling amplifiers do have 
limited compatibility with conventional time-base units and the Type 
3T5 sampling time-base unit can generate a real-time staircase 
sweep usable with conventional amplifiers. 



LEVEL Control Provides a selectable increase in 

writing speed capability for single- 
shot displays. Effective only when 
either or both ENHANCE 
pushbuttons are depressed. 

INTEGRATE Pushbutton Permits storage of very fast repet- 
itive signals, by allowing the writ- 
ing-gun beam to accumulate 
charges on the target while the 
flood-gun beams are turned off. 



Spectrum Analysis. Spectrum analyzer plug-in units can be 
used in conjunction with conventional time-base units to produce a 
spectral display (a graph of the relative amplitude distribution as a 
function of frequency). 



Custom Plug-In Units 

Blank-Chassis plug-in units can be purchased through your local 
Tektronix Field Office as Modification Kit Number 040-0245-00. 
These blank chassis permit one to build his own plug-in circuitry for 
use in the Type 564B. 

Heat Dissipation and Power Consumption. The power 
dissipated by the custom plug-in unit should not exceed 40 watts 
DC. The maximum total power that can be dissipated is 52 watts 
AC and DC. Maximum plug-in unit load is normally 75 mA on the 
+ 300-volt supply, 75 mA on the + 125-volt supply, 750 mA on the 
- 12.2-volt and 65 mA on the -100-volt supply. 



FUNCTION OF CONTROLS AND CONNECTORS 

A brief description of the function or operation of the front- and 
rear-panel controls and connectors follows. See Fig. 2-2 for 
locations. 



Front Panel 



ASTIGMATISM Control 

FOCUS Control 

INTENSITY Control 

TRACE ALIGNMENT 
(Screwdriver adjustment) 



Used in conjunction with FOCUS 
control to obtain a well-defined 
display. 

Used to optimize focus. 

Controls display brightness. 

Permits alignment of the trace with 
respect to the horizontal graticule 
lines. 



STORE Pushbuttons (Both 
Upper & Lower Screen) 



ENHANCE Pushbuttons 
(Both Upper & Lower 
Screen) 



ERASE Pushbutton (Both 
Upper & Lower Screen) 



When pushed in, the CRT is shifted 
to the storage mode; the button is 
released when pushed again, 
permitting conventional (non-store) 
operation. 

When pushed in, permits increasing 
(with the LEVEL control) the writing 
speed capability for single-sweep 
stored displays: the button is re- 
leased when pushed again. 

Provides a manual method of eras- 
ing a stored display; spring-loaded 
momentary-contact action. 



LOCATE Pushbutton Displays a dot or vertical line in the 

non-storing area at left edge of 
screen to locate vertical position of 
signal while sweep is held off, pro- 
vided that the sweep start has 
been positioned to left edge of the 
graticule. This permits display to be 
positioned before storing. 

SCALE ILLUM Control Varies illumination of the graticule 

grid lines 



NOTE 

Only early Instruments have a Scale Illumination Control. 



POWER Switch 
POWER Indicator 
CALIBRATOR Switch 



CAL OUT Connector 



1 0 mA Current Loop 



Used to apply or remove instru- 
ment input power. 

Lamp bulb to indicate that AC pow- 
er is applied to the instrument. 

Provides selection of one of several 
values of square wave voltage or a 
calibrated DC voltage. A calibrated 
DC or square wave current can 
also be selected. 

BNC connector at which calibrator 
output voltage is available. 

Provides convenient means for cali- 
brating current probes. 



Rear Panel 

CRT CATHODE 
SELECTOR Switch 



EXT INPUT Connector 



REMOTE CONTROL 
INPUT Connector 

Line Voltage Selector 



Permits selection of normal CRT 
operation, chopped blanking 
(blanking of the between-channel 
switching transients when using 
multi-channel plug-in units in the 
chopped mode) and external CRT 
cathode input (permitting intensity 
modulation of the CRT by an exter- 
nal signal). 

BNC connector by which an exter- 
nal signal can be applied to the 
CRT cathode. 

Permits remote erasure of each 
target. 

Provides quick method of changing 
transformer taps to allow instru- 
ment to operate over a wide range 
of line voltages. 



REV NOV 1981 



2-3 




Operating Instructions — Type 564B 






Operating Instructions — Type 564B 



Horizontal & Vertical 
Connector Holes 



Permit installation of auxiliary 
inputs and outputs through rear 
panel. 



FIRST TIME OPERATION 

The following procedure, using normal single-channel 
time-base mode, will demonstrate the basic operation of 
this instrument and its plug-in units. 

1. Install a 2-Series or 3-Series amplifier plug-in unit in 
the vertical (left) plug-in compartment and a 2-Series or 3- 
Series time-base plug-in unit in the horizontal (right) plug-in 
compartment. Lock the plug-in units in place with their lock- 
ing screws. 

2. Set the POWER switch to the off position (down). 

3. Connect the power cord from the Type 564B to the 
proper line voltage. 



NOTE 

The LINE VOLTAGE SELECTOR assembly on the rear 
panel should be checked to be sure the voltage 
Selector and Range Selector switch bars are in the 
proper positions for the line voltage applied. 

4. Set the instrument controls as follows: 



Type 564B 



INTENSITY 
FOCUS 
SCALE ILLUM 
ASTIGMATISM 
CALIBRATOR 
STORE (both) 

ENHANCE (both) 

LEVEL 

CRT CATHODE SELECTOR 
(rear panel) 



Counterclockwise 

Centered 

Counterclockwise 

Centered 

4V 

Non-store (out) 
Off (out) 
Counterclockwise 
NORM 



Amplifier Unit 
(For example: Type 3A6) 



Position 

Mode 

Volts/Div 

Variable (Volts/Div) 
Input Coupling 



Centered 

Normal (Channel 1) 
2 

Calibrated 

DC 



Time-Base Unit 
(For example: Type 3B3) 



Position 

Time/Div 

Variable (Time/Div) 
Magnifier 
Sweep Mode 
Normal-Single Sweep 
Level 



Centered 
.5 ms 

Calibrated 

Off 

Normal 

Normal 

Free Run (clockwise) 



Triggering Source Internal 

Slope + 

Coupling Auto 

5. Connect a patch cord from the CAL OUT connector to 
the Channel 1 input connector of the amplifier plug-in unit. 

6. Set the POWER switch to ON and allow a few minutes 
for warmup. 

7. Adjust the INTENSITY control to obtain a display of 
moderate brightness. The amplifier unit Position control may 
have to be adjusted to position the free running trace on the 
CRT screen. Do not turn the intensity higher than is neces- 
sary for adequate observation of the display. 

8. Trigger the display by adjusting the time-base Level 
control. 

9. Set the SCALE ILLUM control so the graticule illumina- 
tion is approximately equal to the intensity of the display. 

10. Adjust the time-base Position control to position the 
start of the trace at the left edge of the graticule. 

11. Adjust the FOCUS and ASTIGMATISM controls for a 
sharp well-defined display over the entire trace length. (If 
a focused display cannot be obtained, see Astigmatism Ad- 
justment later in this section under General Operating Infor- 
mation.) 

12. Adjust the TRACE ALIGNMENT screwdriver adjustment 
to align the display with the graticule lines. 

13. Check the gain and DC balance of the amplifier unit 
and the timing adjustment (Sweep Cal) of the time-base unit 
as given in the instruction mqnuals for those units before mak- 
ing any voltage or time measurements. (In this demonstra- 
tion, the calibrator waveform should be displayed as two 
divisions per cycle and two divisions in amplitude.) 



STORAGE OPERATION 

In the storage mode, the writing-gun and deflection cir- 
cuits operate the same as in the non-store mode. However, 
the storage circuits and storage controls are unique and re- 
quire operating information not given in the plug-in manuals. 
The following demonstrations are intended to illustrate the 
various types of stored displays that are possible and the 
techniques required to obtain them. 



Slow and Medium Sweep Rates 

Repetitive-Sweep Storage. This method of storage is 
used for repetitive waveforms that produce normally bright 
displays on the CRT screen. 

1. Set up a calibrator waveform display as described in 
"First Time Operation." 

2. Center the waveform display vertically on the CRT 
screen so that part of the waveform is above the horizontal 
centerline and part of it is below the centerline. 

3. Turn the INTENSITY control fully counterclockwise. 

4. Press in both STORE buttons. The normal storage-mode 
background light level will be present on the storage screens. 




Operating Instructions — Type 564B 



5. Advance the INTENSITY control slowly in the clock- 
wise direction to produce a waveform display of normal 
intensity, then return the control to the minimum (counter- 
clockwise) position. A stored waveform of moderate bright- 
ness should remain. 

6. Press the upper ERASE button and release it. Note that 
only the portion of the stored image on the upper storage 
screen (upper half of the CRT screen) has been erased. 

7. Press the upper STORE button and then release it to set 
the switch to non-store. The image on the lower screen will 
not be affected when the upper screen Is switched to non- 
store mode. 

8. Press the lower ERASE button and release it. The re- 
mainder of the stored display is now erased. 

9. Set the lower STORE switch to non-store. 

10. Increase the intensity to produce a normal display, 
vertically position the entire waveform on the upper screen, 
then rotate the INTENSITY control counterclockwise. 

11. Press in only the upper STORE button. 

12. Increase the intensity to the normal display level, then 
return the INTENSITY control to the counterclockwise posi- 
tion. The waveform is now stored on the upper screen only, 
operating independently. 

13. The demonstration may be repeated using only the 
lower screen in the storage mode. At the end of the demon- 
stration, set the STORE switches to non-store. 

Single-Sweep Storage. This method is used for single- 
sweep events that produce adequate stored displays. 

1. Set up a normal-intensity non-stored calibrator display 
as in “First Time Operation.” 

2. Set the time-base Normal-Single Sweep switch to Single 
Sweep. 

3. Press in both STORE buttons. 

4. Apply a single sweep of the trace by pressing the Nor- 
mal-Single Sweep switch down to the Reset position and 
releasing it. A stored display of the calibrator waveform 
should remain on the storage screen. If not, repeat the 
demonstration with the display intensity increased slightly. 

5. Simultaneously press both ERASE buttons to clear the 
storage screens, then continue with the Trace Location de- 
monstration. 

Trace Location. The LOCATE button permits the trace or 
display to be located vertically while the sweep is held off, 
so that it can be positioned to a new level before storing. 
The intensity of the trace or display during locate is in- 
dependent of the intensity control. 

1. Continuing from the preceding demonstration, press the 
LOCATE pushbutton and hold it in. Note that two dots of 
normal intensity appear at the left edge of the stored wave- 
form. 

2. With the LOCATE button still held in, position the two 
dots to the upper screen with the amplifier Position control. 




Fig. 2-3. Use of the LOCATE button for positioning the display 
level while the sweep is held off. 

3. Release the LOCATE button and press the Normal- 
Single Sweep switch down to the reset position, writing a 
display on the upper storage screen. 

4. Press the LOCATE button and position the two dots to 
the lower screen (see Fig. 2-3). 

5. Release the LOCATE button and press the Normal-Sin- 
gle sweep switch down to the reset position, writing a dis- 
play on the lower storage screen. Both screens should now 
have stored calibrator waveforms. 

6. At the end of the demonstration, set both STORE 
switches to non-store. 

NOTE 

Be sure the waveform is positioned so the sweep 
starts at the left edge of the graticule for proper 
operation of the locate feature. The LOCATE but- 
ton can be used with sweep magnifier on, but hori- 
zontal repositioning is likely to be required. 



Integrated Fast-Rise Waveforms 

The INTEGRATE button, when used in conjunction with the 
INTENSITY control as described in this demonstration, 
permits the storage of relatively fast-rising and fast-falling 
portions of a waveform. This method may also be used 
for producing a high-resolution display of a low-jitter repe- 
tition waveform. 

1. Connect a 25-kHz square-wave signal (Tr ;::r:20 ns) to the 
amplifier unit input. 

2. Set the controls as given in “First Time Operation," 
except for the following: 

Volts/Div 5 

Time/Div 20 /xs 

3. Adjust the INTENSITY control for normal brightness of 
the free-running trace. 



2-6 




Operating Instructions — Type 564B 




Fig. 2-4. Storage of fast-rise waveform showing difference in stor- 
age techniques: (A) non-store display; (B) stored with INTENSITY 
control alone; (C) stored with INTEGRATE button; (D) stored with 
INTEGRATE button and INTENSITY control as described in text. 



4. Adjust the amplifier Volts/Div switch and the square- 
wave amplitude to produce about 3 major divisions of verti- 
cal deflection on the CRT screen. 

5. Trigger the square-wave display and adjust the focus. 

6. Press in both STORE buttons and attempt to store the 
waveform by the previous methods. Note that even though 
the vertical portions of the waveform are visible when the 
writing beam is displayed, they cannot be stored well with 
the methods described previously. 

7. Turn the INTENSITY control fully counterclockwise. 

8. Simultaneously press both ERASE buttons to clear the CRT 
screen, 

9. Press the INTEGRATE button and hold it in. 

10. Advance the INTENSITY control until the vertical posi- 
tions of the trace are just barely visible. 

11. Hold the INTEGRATE button for a few seconds, then 
turn the INTENSITY control to minimum while the INTE- 
GRATE button is still pressed. 

12. Release the INTEGRATE button. Both the horizontal 
and vertical segments of the display should now be stored 
(see Fig. 2-4). 

13. Repeat this demonstration several times using slightly 
different intensity levels and integrating for different lengths 
of time. Best resolution is generally produced by using very 
low intensity and integrating for a long period (many sec- 
onds). However, using this method, only the portions of the 
trace that can be seen (at least dimly) will be stored. 

CAUTION 

Do not attempt to store extremely fast-rising or 
fast-falling portions of waveforms viewed at rela- 
tively slow sweep rates. The high trace intensity 
required (due to the intensity difference between 
the horizontal and the vertical segments) would 
cause storage target damage. 

14. At the end of the demonstration, turn the INTENSITY 
control fully counterclockwise and set the STORE switches 
to non-store. 



Fast Single-Sweep Enhancement 

The Enhance mode provides a method of storing single- 
sweep displays that exceed the normal writing speed of the 
instrument. This mode is not normally used for repetitive 
sweeps. 

1. Apply a 25-kHz square-wave signal (Tr 20 ns) to the 
amplifier unit input. 

2. Set the controls as given in “First Time Operation," 
except for the following: 

Volts/Div 10 

Time/Div 10 /as 

3. Adjust the INTENSITY control to observe the trace. 






2-7 







operating Instructions — Type 564B 



4. Set the amplifier unit Volts/Div switch and the square- 
wave amplitude to display about 3 major divisions of de- 
flection. 

5. Trigger the display and position it to the upper stor- 
age screen. 

6. Set the Normal-Single Sweep switch to Single Sweep. 

7. Apply several single sweeps of the trace and advance 
the INTENSITY control to observe the display. Adjust the 
FOCUS control for a well-defined display. 



CAUTION 

Do not allow the time-base Normal-Single Sweep 
switch to be set to Normal while the intensity is 
set at a high level. 



8. Press in the upper STORE button. 

9. Apply a single sweep of the trace. Note that the trace 
will not store. 

10. Push in the upper ENHANCE button. 

11. While repeatedly applying single sweeps, adjust the 
Enhance LEVEL control sufficiently clockwise so the display 
stores completely. 

12. Erase the display and apply a single sweep of the 
trace. The display should now store. 

13. Press the LOCATE button in and position the display 
to the lower screen. 

14. Press in the lower STORE and ENHANCE buttons, 

15. Apply a single sweep of the trace. The display should 
now be stored on both screens. 

16. Erase the screens and repeat the demonstration sev- 
eral times using different settings of the LEVEL control. 

17. At the end of the demonstration, reset the following 
controls: 



INTENSITY 
STORE (both) 
ENHANCE (both) 
Normal-Single Sweep 



Counterclockwise 
Off (out) 

Off (out) 

Normal 



GENERAL OPERATING INFORMATION 
Scale Illumination 

The CRT graticule is edge-lighted by three small lamps 
at the bottom. The lighting can be adjusted to suit the am- 
bient light conditions by means of the SCALE ILLUM control. 
Rotating the control clockwise Increases the brightness of 
the graticule scale markings. 



Intensity Control 

The setting of the INTENSITY control may affect the cor- 
rect focus of the display. Slight adjustment of the FOCUS 
control may be necessary when the intensity level is changed. 

Do not leave a bright, sharply focused spot on the CRT 
screen for a prolonged period. An excessively bright sta- 
tionary spot may damage the CRT phosphor. 



Astigmatism Adjustment 

For most displays, the trace can be adequately focused 
using only the front-panel FOCUS control. However, when- 
ever a large change is made in the beam intensity (to off- 
set large changes in sweep rates or triggering repetition 
rates), or when plug-in units are changed, adjustment of the 
ASTIGMATISM control may also be required for a sharp 
display. 

To check for proper setting of the ASTIGMATISM adjust- 
ment, slowly turn the FOCUS control through the optimum 
setting with a signal displayed on the CRT screen. If the 
ASTIGMATISM adjustment is correctly set, the vertical and 
horizontal portions of the trace will come into sharpest 
focus at the same position of the FOCUS control. 

To set the ASTIGMATISM adjustment, use the following 
procedure: 

1. Connect a 4V Calibrator signal to the vertical input 
and set the corresponding Volts/Div switch to present 2.5 
divisions of vertical deflection. 

2. Set the Time/Div switch .2 ms. 

3. Adjust the INTENSITY control so that the rising portion 
of the display can be seen. 

4. Alternately adjust the FOCUS and ASTIGMATISM con- 
trols so that the horizontal and vertical portions of the dis- 
play are equally focused. 



Graticule 

The graticule of the Type 564B is marked with eight ver- 
tical and 10 horizontal divisions. Each division is one centi- 
meter square. In addition, each major division is divided 
into five minor divisions at the center vertical and hori- 
zontal lines. With the vertical gain and horizontal timing 
calibrated to the graticule, accurate measurements can be 
made from the CRT. The illumination of the graticule lines 
can be varied with the SCALE ILLUM control. 



Trace Alignment Adjustment 

If a free-running trace is not parallel to the horizontal 
graticule lines, set the TRACE ALIGNMENT adjustment as 
follows. Position the trace to the center horizontal line. 
Adjust the TRACE ALIGNMENT adjustment so the trace is 
parallel with the horizontal graticule lines. 



1 kHz Amplitude Calibrator 

The 1 kHz Amplitude Calibrator provides a convenient 
source of square waves of known amplitude at an accurate 
frequency of one kilohertz. The output square-wave volt- 
ages available at the CAL OUT connector are 4 mV, 40 mV, 
0.4 V, 4V and 40 V. The loading of a terminated 50 0 sys- 
tem will provide output square-wave voltages of 2 mV, 
20 mV and 0.2 V. A constant 40-volt DC level is also pro- 
vided. 

The current link provides 10 milliamperes, available as 
either DC or a square-wave current signal, which can be 
used to check and calibrate current probe systems. This 




Operating Instructions — Type 564B 



current signal is obtained by clipping the probe around the 
current loop. The arrow indicates conventional current (i.e., 
positive to negative). 



Intensity (Z-Axis) Modulation 

Intensity modulation can be used to relate other volt- 
age information to the displayed signal without chang- 
ing the shape of the waveform. The modulating signal is 
AC-coupled to the CRT cathode through the rear-panel 
EXT INPUT connector and the CRT CATHODE SELECTOR 
switch. With the INTENSITY control set correctly, a posi- 
tive excursion will dim or blank the CRT beam, and a nega- 
tive excursion will brighten the beam (see Section 1 for am- 
plitudes). 

Time markers may be applied for direct time reference 
of the display or for establishing the sweep rate when un- 
calibrated deflection is used. Fast-rise pulses of short dura- 
tion provide best resolution with respect to time. If the mark- 
ers are not time-related to the displayed waveform, a single 
sweep display is required. If sine waves are used for Z-axis 
modulation, the minimum usable frequency is about 250 
hertz, due to AC coupling at the input. Be sure the CRT 
CATHODE SELECTOR is in the NORMAL position when the 
EXT INPUT connector is not used, to avoid random intensity 
modulation from stray signals. 

Since there is only one intensity level in a stored display, 
Z-axis information can be stored by modifying the display 
in some manner. The stored waveform may be modified 
by either dimming portions of the waveform so they do 
not store, or brightening portions from a dim background 
so only the brightened portions store. The following dem- 
onstrations illustrate these methods of intensity modulation. 

Modulation by Positive Blanking (For Stored Dis- 
plays) . The best intensity-modulated stored displays are 
usually produced by applying positive modulation pulses that 
lower the intensity of the modulated portions below the 
storage threshold. 

1. Apply an approximate 30-volt, one-microsecond posi- 
tive-going time-mark signal to the CRT cathode EXT INPUT 
and to the time-base Ext Trig input. 

2. Set the controls as in “First Time Operation," except 
for the following: 

Time/Div 2 fxs 

Triggering Source Ext 

3. Adjust the INTENSITY, FOCUS and ASTIGMATISM con- 
trols for a well-defined trace. 

4. Set the CRT CATHODE SELECTOR to EXT INPUT and 
adjust the Triggering Level control for a stable display. 

5. The display should consist of a horizontal trace with 
blanked portions occurring every one microsecond. 

6. Press in both STORE buttons, then rotate the INTEN- 
SITY control clockwise. When the operation is performed 
correctly, only the unmodulated portions of the display 
should be stored (see Fig. 2-5A). 

7. At the end of the demonstration, set the STORE switches 
to non-store and the CRT CATHODE SELECTOR to NORM. 




(B) 



Fig. 2-5. Typical CRT displays showing intensity modulation for 
display storage; (A) positive pulse blanking, and (B) negative-pulse 
Intensification. 

ModulaHon by Negative Intensification. The procedure 
is as follows: 

1. Apply an approximate 10-volt, one-microsecond nega- 
tive-going time-mark signal to the CRT cathode EXT INPUT 
and to the time-base Ext Trig input. 

2. Set the controls as in “First Time Operation,” except 
as follows: 



Time/Div 


2 [MS 


Triggering Slope 


— 


Triggering Source 


Ext 



3. Adjust the INTENSITY, FOCUS and ASTIGMATISM 
controls for a well-defined trace. 

4. Set the CRT CATHODE SELECTOR to EXT INPUT and 
adjust the Triggering Level control for a stable display. 






2-9 





operating Instructions — Type 564B 



5. The display should consist of a string of dots, spaced 
one microsecond apart. 

6. Press in both STORE buttons, then rotate the INTEN- 
SITY control clockwise. When the operation is performed 
correctly, only the dots should be stored (see Fig. 2-5B). 

7. At the end of the demonstration, remove the time- 
mark signal and set the STORE switches to non-store. 



Care of Storage Screens 

To prolong the useful life of the storage screens, the fol- 
lowing precautions should be observed when operating the 
Type 564B. 

1. Use minimum beam intensity required to produce a 
clear, well-defined display. Care must be observed in the 
degree of writing-beam intensity that is used, particularly 
when using slow sweep rates and sampling displays. 

2. Turn the INTENSITY control to minimum when changing 
plug-in units. An undeflected spot on the CRT screen can 
burn the storage target, even at normal Intensity. 

3. Do not increase beam intensity to store fast-changing 
portions of a waveform. See instructions given earlier in this 
section for storing fast-rise waveforms. 

4. Avoid repeated use of the same area of the screen. 

5. Do not leave a display on the CRT screen (either writ- 
ing or stored) when the display is not needed. 

6. Do not leave STORE switches pushed in when the 
storage mode is not needed. 



Non-Store Operation 

Operation of the Type 564B in the non-store mode is es- 
sentially the same as that of a conventional general-purpose 
oscilloscope; however, a difference in display brightness 
will be observed (because of the differences in CRT con- 
struction, aluminizing, phosphors, etc.) between the CRT’s 



of the Type 564B and conventional oscilloscopes. The vari- 
ous display modes that are possible with a particular pair 
of plug-in units are described in the instruction manuals for 
those units. Refer to the amplifier unit manual for the fol- 
lowing: compensation of probes, selection and use of input 
cables, coupling and attenuation, measurement of Input 
signal voltage and phase (X-Y). Refer to the time-base unit 
manual for selection of triggering sources and coupling and 
for measurements of time intervals, frequency and phase 
(linear measurement). 

Display Photography 

A permanent record of the CRT display may be obtained 
through the use of a trace-recording camera. When the Type 
564B Oscilloscope is operated in non-store mode, trace pho- 
tography is accomplished In essentially the same manner 
as with a conventional oscilloscope. Use a normal trace 
intensity and set the graticule illumination so that it Is ap- 
proximately- two-thirds as bright as the trace. See the in- 
structions accompanying the camera for specific techniques. 

When the oscilloscope is operated in storage mode, the 
display may be stored and erased as many times as is nec- 
essary to obtain the desired display characteristics before a 
picture is taken. For non-repetitive waveforms and certain 
other applications, the ability to compose the display in 
advance permits the saving of a considerable quantity of 
film. 

Due to the presence of a background glow on the stor- 
age screens, special care must be taken in the exposure times 
and f-stop settings that are used. Of course, these will de- 
pend on the type of film used. The graticule illumination 
should be set to a level slightly less bright than the stored 
waveform. The trace-to-backg round contrast in the de- 
veloped picture is generally improved by allowing the film 
to overdevelop slightly. 

Most of the pictures of storage-mode displays shown in 
this manual were taken on ASA3000 medium-contrast film 
at about 1/10 second and f5.6. Greater contrast can be 
obtained with a high-contrast type of film. 




SECTION 3 

CIRCUIT DESCRIPTION 



Type 564B 



Change information, if any, affecting this section will be found at the 
rear of the manual. 



Introduction 

This section of the manual contains a description of the 
circuitry used in the Type 564B Storage Oscilloscope. Each 
circuit is described in detail, using a detailed block diagram 
to show the interconnections between the stages in each 
major circuit and the relationship of the front-panel controls 
to the individual stages. Complete schematic diagrams are 
located at the rear of this manual. 

LOW-VOLTAGE POWER SUPPLY 
General 

The Low-Voltage Power Supply circuit provides the oper- 
ating power for this instrument from tour regulated sup- 
plies. Electronic regulation is used to provide stable, low- 
ripple output voltages. Each regulated supply contains a 
short-protection circuit to prevent instrument damage if a 
supply is inadvertently shorted to ground or to another 
supply. The voltage input stage includes the Voltage 
Selector Assembly which allows selection of the nominal 
operating voltage and regulating range for the instrument. 
Fig. 3-1 shows a detailed block diagram of the Low-Voltage 
Power Supply. 

Power Input 

Power is applied to the primary of transformer T1 through 
fuse FI, POWER switch SWl, thermal cutout TKl, Voltage 
Selector switch SW2 and Range Selector switch SW3. SW2 
connects the split primaries of T1 in parallel for 115-volt 
nominal operation, or in series for 230-volt nominal opera- 
tion. SW3 allows three ranges of regulation by changing 
the taps on the primary windings to fit different line require- 
ments. A second fuse, F2, is connected into the circuit when 
SW2 is set to the 230 V position to provide the correct pro- 
tection for 230-volt operation. 

Thermal cutout TKl provides thermal protection by inter- 
rupting power if the instrument overheats. When the tem- 
perature returns to a safe level, TKl automatically closes 
to re-apply the power. 

-100-Volt Supply 

The — 100-Volt Supply provides the reference voltage for 
the remaining supplies. The output from the secondary of 
T1 is rectified by bridge rectifier D8A-D. This voltage is 
filtered by C9, then applied to the — 100-Volt Series Regu- 
lator stage to provide a stable output voltage. The Series 
Regulator can be compared to a variable resistance which 
is changed to stabilize the output voltage. The conductance 
of the Series Regulator stage is controlled by the Error 
Amplifier to provide the correct regulated output voltage. 



The Error Amplifier consists of Q12 and Q14, which are 
connected as a comparator. The output at the collector of 
Q14 indicates any voltage variations that occur at the 
base of Q14 relative to the fixed voltage at the base of 
Q12. Zener diode DIO maintains a fixed 9-volt drop, 
setting the base of Q12 at about — 9 volts. The base 
level of Q14 is determined by the voltage divider network 
R18-R19-R20-R21-R23. R23, the —100 Volts adjustment, allows 
the operating point of the Error Amplifier to be adjusted to 
set the output voltage of the supply at — 100 volts. R13 is 
the emitter resistor tor both comparator transistors and the 
current through it divides beween Q12 and Q14. The out- 
put current of the Error Amplifier stage controls the conduc- 
tion of the Series Regulator stage. This is accomplished as 
follows: Assume that the output voltage increases (becomes 
more negative) because of a change in load or an increase 
in line voltage. This negative-going voltage change at the 
output is applied to the base of Q14, reducing the conduc- 
tion of Q14. As current through Q14 is reduced, Q24 base 
current increases. This results in increased Q24 collector 
current. Increasing the voltage drop across R25 and R26 
and pulling the base of Q28 negative. The emitter of Q28 
follows the base; hence, the base of Q32 Is also pulled 
negative. Reduced current through Series Regulator Q32 
decreases current through the load, causing the output volt- 
age to decrease (become less negative) to its correct level. 
These changes occur rapidly, and the effect is to maintain 
unchanged output voltage. In a similar manner, the Series 
Regulator and Error Amplifier stages compensate for out- 
put changes due to ripple. As will be seen in subsequent 
paragraphs, R33 determines the limit current for the Series 
Regulator stage, and thus for the load. Transients beyond 
the frequency range of the regulator are filtered by C31 
to prevent their appearance on the output voltage. 

When the power switch is activated, diode D25 provides 
a base current path for Q28, allowing the — 100-Volt Supply 
to turn on first, since all the other supplies are dependent 
upon its output. As the — 100-Volt Supply output builds up 
to its correct level, D25 is reverse biased and remains off 
during normal operation of the instrument. 

The Short-Protection Amplifier stage, Q30, protects the 
— 100-Volt Supply if the output is shorted, and also serves 
to limit the current demanded from the Series Regulator 
under excessive load. During normal operation, divider R30- 
R31 sets the base of Q30 to a point below the turn-on level 
of the transistor. When excess current is demanded from 
Series Regulator Q32 due to an overload or short circuit, 
the additional current through R33 raises the emitter of Q32 
more positive. This produces a corresponding change at 
the base of Q32, which is connected through R30 to the base 
of Q30. This positive-going change biases Q30 into conduc- 
tion. As a result, less current is available to Q28, to Q32 






3-1 




Circuit Description — Type 564B 



Range Switch SW3 JVolfage Selector Switch SW2 



+ 125-Volt 
Series 
Regulator 
Q74 




3-2 















Circuit Description — Type 564B 



and to the load, thus causing the supply to lose regulation. 
R31 senses the decrease in load voltage and adds to in- 
creasing base current of Q30. As the collector of Q30 goes 
negative, conduction of Q28 and Q32 is further decreased. 
Thus the output current is decreased and remains \ow until 
the excessive load is removed. D19, together with divider 
R18-R19-R20, provides protection to the — 12.2-Voit Supply. 
In the event the -100-Volt Supply is shorted to the -12.2- 
Volt Supply, D19 causes the — 100-Volt supply to lose regu- 
lation and therefore lose reference voltage for the —12.2- 
Volt Supply. D31 protects the — 100-Volt Supply from dam- 
aging polarity reversal if it is shorted to either the + 125-Volt 
Supply or the +300-Volt Supply. 

-12.2-Volt Supply 

Rectified voltage for operation of — 12.2-Volt Supply is 
provided by D35A-B, filtered by C36 and applied to the 
— 12.2-Volt Supply Series Regulator stage. Reference voltage 
for this supply is provided by voltage divider R42-R43 be- 
tween the regulated — 100-Volt Supply and ground. If the 
— 12.2-volt output changes, a sample of the change appears 
at the base of Q46 as an error signal. Regulation of the 
output voltage is controlled by Error Amplifier Q44-Q46- 
Q49 and Series Regulator Q51 in a manner similar to that 
described for the — 100-Volt Supply. Transients beyond the 
frequency range of the regulator are filtered by C47. 

Short protection is provided by Q38 and R38. For normal 
operation, the emitter-base voltage of Q38 is not enough to 
bias it into conduction. However, when the output is shorted, 
the high current demanded from the — 12.2-Volt Supply is 
drawn through R38, producing a voltage drop sufficient to 
forward bias Q38. Q38 collector current then produces an 
increased voltage drop across R40, reducing the conduction 
of both Q49 and Q51 to limit the output current. R39 pro- 
tects Q38 from sudden current surges by limiting the base 
current. D47 protects the — 12.2-Volt Supply from damage 
if it is shorted to either the + 125-Volt Supply or the +300- 
Volt Supply. 



+ 125-Volt Supply 

Rectified voltage for operation of the + 125-Volt Supply 
is provided by D53A-D, filtered by C54 and applied to the 
+ 125-Volt Supply Series Regulator stage. The +125-Volt 
output is summed with the — 100-volt reference through divid- 
er R62-R63, and the summation is applied through R61 to 
the base of Q60 and compared to the grounded base of 
Q58. If the +1 25-volt output changes, a sample of the 
change appears at the base of Q60 as an error signal. 
Regulation of the output voltage is controlled by Error Am- 
plifier Q58-Q60-Q66-Q68 and Series Regulator Q74 in a 
manner similar to that described for the -100-Volt Supply. 
Transients beyond the frequency range of the regulator are 
filtered by C97B-C to prevent their appearance on the out- 
put voltage. 

Short protection for this supply is provided by the Short- 
Protection amplifier stage, Q70, which functions in a manner 
similar to that described for Q30 in the -100-Volt Supply. 
D62 protects the Error Amplifier from damage if the output 
of the +1 25-Volt Supply collapses or goes negative, caus- 
ing C62 to rapidly discharge and reverse bias Q60. Diode 
D75 protects electrolytic capacitor C97B-C and the transis- 



tors in the circuit from damaging polarity reversals in the 
event the +300-volt output is shorted to ground or to one 
of the negative supplies. D76 causes the + 125-Volt Supply 
to go into current limiting when the +300-Volt Supply is 
shorted to ground or to one of the negative supplies. 

-h 300-Volt Supply 

Rectified voltage for operation of the +300-Volt Supply 
is provided by D77A-D, filtered by C78 and applied from 
the negative side of the rectifier to the +300-Volt Supply 
Series Regulator stage. The +300-volt output is summed 
with the — 100-volt reference through divider R80-R81, and 
the summation is applied through R83 to base of Q84 and 
compared to the grounded base of Q86. If the +300-volt 
output changes, a sample of the change appears at the 
base of Q84 as an error signal. Regulation of the output 
voltage is controlled by Error Amplifier Q84-Q86-Q88-Q90 
and Series Regulator Q96 in a manner similar to that de- 
scribed for the — 100-Volt Supply. Transients beyond the 
frequency range of the regulator are filtered by C97A. The 
load current through Series Regulator Q96 also passes 
through the + 125-Volt Supply Series Regulator, Q74. How- 
ever, this does not affect the limit current of the + 125-Volt 
Supply. 

Shorting protection for this supply is provided by the 
Short-Protection Amplifier stage, Q91, which functions in a 
manner similar to that described for Q30 in the — 100-Volt 
Supply. D80 protects the Error Amplifier from damage if 
the output of the +300-Volt Supply collapses or goes nega- 
tive, and D95 protects the transistors in the circuit from 
damaging polarity reversals in the event the + 125-Volt 
Supply is shorted to ground or to one of the negative sup- 
plies. 

6.5-Volt RMS AC Source 

The four 6.5-volt RMS secondary windings of T1 provide 
power for the CRT heater, the plug-in heaters via Jll and 
J21, the pilot light, B7, and the scale illumination lights, B4, 
B5, and B6. Current through the scale illumination lights is 
controlled by the SCALE ILLUM control, R4, to change the 
brightness of the graticule lines. 

DEFLECTION CIRCUITS 

Push-pull horizontal and vertical signals for deflecting 
the writing-gun beam are received through pins 17 and 21 
of each plug-in connector (Jll and J21) and applied to the 
respective deflection plates of the CRT. The effective de- 
flection circuit capacitance encountered by each of these 
signals at the plug-in connector affects the bandwidth and 
phase shift of the plug-in unit. Compensating capacitors 
Cl 02 and Cl 09 (shown on the Plug-In Connectors diagram) 
are factory adjusted to set the effective capacitance to 
14.3 picofarads to ensure plug-in compatibility. 

When the sweep start is positioned to the left edge of 
the graticule and the LOCATE button is pushed (see CRT 
Circuit), the writing-gun beam is deflected to the preview 
area at the left side of the CRT screen, permitting the beam 
to be located without altering a stored display. This is 
accomplished by applying a positive voltage via R105 
and D105 to the left-hand horizontal deflection plate. 




Circuit Description — Type 564B 




Fig. 3-2. 1 kHz Calibrator detailed block diagram. 



1 kHz CALIBRATOR 

General 

The 1 kHz Calibrator circuit produces a square-wave out- 
put with accurate amplitude and frequency. This output 
is available as a square-wave voltage at the CAL OUT 
connector or as a square-wave current through the 10 mA 
probe current loop. An accurate +40 volts DC level is also 
available. The CALIBRATOR switch selects the attenu- 
ation of the output signal to provide square-wave voltage 
outputs between 40 volts and 4 millivolts (between 0.2 volts 
and 2 millivolts into 50 ohms) peak to peak. Fig. 3-2 shows 
a detailed block diagram of the 1 kHz Calibrator circuit. 

Calibrator Multivibrator 

The Calibrator Multivibrator is comprised of Q151 and 
Q159, and is a free-running emitter-coupled multivibrator^. 
The circuit operates in a symmetrical manner and the output 
is an accurate one-kilohertz square wave. Only an approxi- 
mate 9-volt change is exhibited at the emitters of Q151 and 
Q159, so that an essentially constant current of about 0.8 
mA is maintained through resistors R150 and R158. 

Refer to the wave shapes shown in Fig. 3-3 for this discus- 
son. With the CALIBRATOR switch, SW150, in all posi- 
tions except 10 mA DC and OFF, the emitters of Q151 and 
Q159 are returned to the + 125-Volt Supply through D151- 
R150 and D159-R158. Assume that the multivibrator has 
just switched states; Q151 is off and Q159 is on. This is 
To in Fig. 3-3. The base potential of Q159 is set to about 
— 11.0 volts by voltage divider R153-R154-R156 to ensure 
that Q159 will not saturate. The voltage at the anode of 
D159 is about — 9.8 volts because of the voltage drop across 
two forward biased junctions. Capacitor Cl 57 has about 
a 2-volt charge as switching occurs; thus, the voltage at 
the anode of D151 is about — 7.8 volts cutting off Q151. 
Cl 57 begins to charge toward the +1 25-Volt Supply via 
R150. Total current through Q159 is about 1.6 mA; 0.8 mA 
through R158 and 0.8 mA through Cl 57 and R150. 

^Jacob Millman and Herbert' Taub, “Pulse, Digital, and Switching 
Waveforms," McGraw-Hill, New York, 1965, pp. 445-451. 



T 

+ 1.2 V 

D151 anode 
(Q151 emitter) 

— 7.8 V 


0 T 


1 T 








— 0.8 V 

D159 anode 
(Q159 emitter) 

— 9.8 V 










— 2.0 V 

Q151 collector 
(Q159 base) 

— 11.0V 












— 11.6V 
Q159 collector 

— 12.8 V 






— 




1 

1 NOTE; Voltages shown are approximate a 
vary slightly with the setting of R1 54, Free 


nd will 
luency. 



Fig. 3-3. Calibrator Multivibrator waveforms. 



After about 0.5 milliseconds (corresponding with Ti in 
Fig. 3-3), Cl 57 has charged to the turn on level of Q151 
and D151. At this point, the capacitor has a charge of 
about 11 volts and the potential at the anode of D151 is 
about +1.2 volts. The capacitor charging current through 
Q159 ceases as Q151 and D151 begins to conduct. As the 





Circuit Description — Type 564B 



collector of Q151 (hence the base of Q159) rises, Q159 and 
D159 are switched off and Cl 57 begins to discharge through 
R158. The C157-R158 current sums with the R150 current 
through Q151, producing an approximate 9-volt positive- 
going step at the base of Q159. 

Cl 57 continues to discharge, and after 0.5 milliseconds 
(T 2 in Fig. 3-3), the voltage at the anode of D159 has 
risen to forward bias Q159 and D159. As Q159 begins to 
conduct, the anode of D159 is clamped at about — 0.8 volts 
and the discharge action of Cl 57 is halted. The current 
through Q151 decreases, causing its collector to introduce 
a negative-going step, which is connected through the Q159 
base-emitter junction and D159 to Cl 57, Because Cl 57 
cannot obtain an instantaneous charge, the anode of D151 
is pulled negative to reverse bias D151 and Q151. Q151 
turns off, and its collector falls rapidly to about — 11.0 
volts, resulting in an approximate 9-volt negative-going step 
applied through Q159 and D159 to Cl 57. The anode of 
D151 is pulled down to about — 7.8 volts, completing the 
cycle. 

The Calibrator Multivibrator circuit has been designed to 
repeat the preceding sequence at an accurate one-kilohertz 
frequency. However, since a tolerance range of the passive 
components does exist, the frequency can be adjusted by 
varying the amplitude across Cl 57 slightly during the 
charge-discharge cycle. This is accomplished by adjustment 
of R154, Frequency, which determines the potential on D159 
anode at the instant the diode turns on. For example, with 
greater amplitude, longer charge and discharge times are 
required, thus lowering the frequency. 

Output Stage 

The output stage consists of the Current Switch, Q162, and 
the Divider Network. During the half cycle that Q159 is con- 
ducting, current is injected into the base of Q162. Q162 
saturates and its collector drops to about — 12 volts, reverse 
biasing D168. With D168 off, there is no current through 
R170 and R171, and the output level at the cathode of D168 
drops to zero volts. 

When Q159 turns off, Q162 turns off and D161 turns on 
to protect the Q162 base-emitter junction from reverse-bias 
breakdown. D164 and D168 turn on, and the output of the 
circuit (at D168 cathode) is dependent upon voltage divider 
R166-R167-R170-R171 between +125 volts and ground. This 
output level is set to exactly +40 volts by adjustment of 
R166, Amplitude. When this adjustment is made, the current 
through the divider is an accurate 10 mA which is available 
at the current probe loop in the 10 mA positions of the 
CALIBRATOR switch. 

The signal voltage available at the CAL OUT connector 
is determined by the divider network (made up of precision 
resistors) and the setting of the CALIBRATOR switch. In the 
10 mA DC (40 VDC) position, the Calibrator Multivibrator 
is inoperative so that a +40-volt DC output level is pro- 
duced. R173 is placed in series with the R166-R167-R170-R171 
resistance to obtain an effective resistance of 450 ohms with 
4 volts applied, as seen by the CAL OUT connector in the 4 
V position of the switch. This effective resistance becomes 
part of the output voltage divider in the positions of 0.4 V 
and below (these positions have an accurate 50-ohm output 
resistance, which when terminated by 50 ohms can further 
divide the outputs by two, providing outputs of 0.2 V, 20 mV 



and 2 mV). In the 10 mA position, the CAL OUT connector 
is grounded. 

R183, which is about ten times the resistance of the braid 
of a 42-inch coaxial cable, cancels any ground loop current 
that may exist between the CAL OUT connector and some 
other instrument chassis. 

CRT CIRCUIT 

General 

The CRT Circuit provides the high voltage and control 
circuits necessary for operation of the cathode-ray tube 
(CRT). Fig. 3-4 shows a detailed block diagram of the CRT 
Circuit. 



High Voltage Oscillator 

Q219 and its associated circuitry comprise a class C 
oscillator^ to provide the drive from the high-voltage trans- 
former, T220. When the instrument is turned on, conduction 
of Q214 provides a base current path for Q219. The collect- 
or current of Q219 increases and a voltage is developed 
across the collector winding of T220. This produces a corre- 
sponding voltage increase in the feedback winding of T220 
which is connected to the base of Q219, causing it to 
conduct harder. While Q219 is conducting, C217 charges 
negatively to the peak to peak voltage of the feedback 
winding. Eventually the rate of collector current increase 
in Q219 becomes less than that required to maintain the 
voltage across the collector winding and the voltage drops. 
This turns off Q219 by way of feedback voltage to the base. 
During the interval that Q219 is not conducting, the negative 
charge on C217 is partially removed through Q214. Q219 
remains off until the feedback voltage on the base is near 
the peak positive value again. The cycle repeats at a fre- 
quency of 40 to 50 kilohertz. The amplitude of sustained 
oscillation depends upon the average current delivered to 
the base of Q219, and finally, the average Q219 collector 
current. 



High Voltage Regulator 

Feedback from the secondary of T220 and +125 volts 
are summed through the voltage divider network consisting 
of R200, R201, R206, R208 and R233 through R238, and the 
difference is applied to the gate of Field-Effect Transistor 
Q211. This sample of the output voltage is compared to 
the regulated —12.2-volt level at the source of Q211. It is 
then inverted and amplified by Q211 and applied to the 
base of Q214. Amplitude of the oscillations at the collector 
of Q219 is determined by the average collector current of 
Q214. 

Regulation is accomplished as follows: If the output volt- 
age at the — 3300 V test point starts to go positive (become 
less negative), a sample of this positive-going voltage is 
applied to the gate of Q211. Conduction of Q211 is in- 
creased, and as its drain goes negative because of the 
voltage dropped across R211, the base current of Q214 is 
increased. An increase in conduction of Q214 increases the 

^Lloyd P. Hunter (ed.), “Handbook of Semiconductor Electronics,” 
second edition, McGraw-Hill, New York, 1962, pp. 14-19-14-21. 




Circuit Description — Type 564B 




High-Voltage 

Rectifier 

(Grid) 

D260 



From Low-Voltage 
Power Supply 



High-Voltage 

Oscillator 

Q219 



High-Voltage 
Regulator - 
s^Q211 0214 




High-Voltage 

Rectifier 

(Cathode) 

D221 



Fig. 3-4. CRT Circuit detailed block diagram. 



average collector current, which is applied through the feed- 
back winding of T220 to the base of Q219. Q219 conducts 
harder, increasing the collector current to produce a larger 
induced voltage in the secondary of T220. This increased 
voltage appears as more negative voltage at the — 3300 V 
test point to correct the original positive-going change. By 
sampling the output from the cathode supply in this manner, 
the total output of the high-voltage supply is held constant. 

Output voltage level of the high-voltage supply is 
controlled by the High Voltage adjustment, R206, in the gate 



circuit of Q211. This adjustment sets the effective divider 
ratio, which in turn determines the voltage necessary to 
satisfy the quiescent condition of Q214 and Q219 in the 
manner described for a change in output voltage. Neon 
bulb B209 and diode D212 protect the FET, Q211, from 
damage due to excessive voltage. 

The INTEGRATE switch, SW480, grounds R203 in the gate 
circuit of Q211, which causes a slight shift in the high volt- 
age to correct for the deflection sensitivity changes that 
occur when the flood gun cathodes are turned off. 






3-6 






Circuit Description — Type 564B 



High Voltage Rectifiers and Output 

The high-voltage transformer, T220, has two output wind- 
ings. These windings provide the negative CRT cathode 
potential and the CRT control grid bias. 

The accelerating potential for the CRT cathode is supplied 
by the half-wave rectifier D221 and held constant by the 
High-Voltage Regulator stage in the primary of T220. The 
output level is adjustable to about — 3300 volts on the cath- 
ode by the High Voltage adjustment mentioned previously. 
(The 6.3-volt writing gun heater is also elevated to the 
cathode potential through R246.) 

Half-wave rectifier D260 provides a negative voltage for 
the control grid. The voltage applied to the control grid 
is determined by the setting of the INTENSITY control (to 
be discussed in the next paragraph), the CRT Grid Bias 
control (R269) and any intensification signals received from 
the time-base plug-in unit (delayed sweep and sampling 
units only). Reference to ground for this supply is set by 
the conduction of D272. 

Beam current is controlled by R225, INTENSITY. As the 
control is rotated clockwise, the wiper arm moves toward 
—100 volts. This more negative DC reference voltage is 
applied to the secondary winding controlling the CRT cath- 
ode, reducing the voltage demanded of the winding to 
maintain — 3300 volts at the — 3300 V test point. This is accom- 
plished by the regulator circuit. The voltage across the grid 
winding is also reduced, which results in a more positive 
voltage applied to the CRT control grid, thus increasing 
beam current. Beam current is reduced in a like manner by 
rotating R225 counterclockwise. 

Neon bulbs B277, B278 and B279 provide protection to 
the CRT if the voltage difference between the control grid 
and the cathode exceeds about 135 volts. 



CRT Control Circuits 

In addition to the INTENSITY control discussed previously, 
the FOCUS and ASTIGMATISM controls have been incorpor- 
ated for arriving at the optimum CRT display. FOCUS con- 
trol R237 provides the correct voltage for the second anode 
in the CRT. Proper voltage for the third anode is obtained 
by adjusting ASTIGMATISM control R257. In order to obtain 
optimum spot size and shape, both the FOCUS and ASTIG- 
MATISM controls are adjusted to provide the proper electro- 
static lens configuration in the CRT. 

The TRACE ALIGNMENT control, R259, permits adjustment 
of the DC current through beam-rotation coil L259 to align 
the display with the horizontal graticule lines. 

When the LOCATE button, SW225, is pushed, a dot (or 
line, if varying vertical deflection is present) will appear 
to the left of the screen at the display level of the trace, 
provided that the sweep start is at the left edge of the 
graticule. This is accomplished by applying a positive de- 
flection voltage to the left horizontal deflection plate and 
unblanking the CRT writing beam. At the same time, the 
INTENSITY control is removed from the circuit and the cath- 
ode supply is referenced to the voltage set by divider R227- 
R228. Locate intensity is therefore a fixed value, determined 
by the setting of the CRT Grid Bias control (R269), and is 
independent of the INTENSITY setting. 



Blanking 

The writing-gun beam is blanked by a special set of 
deflection plates in the CRT. One of the plates (pin 7) 
is connected directly to the -fl 25-Volt Supply through R243, 
SW225 (LOCATE switch) and R242. The second plate (pin 
5) is connected through plug-in connector J21 to the horizon- 
tal plug-in unit. When there is no sweep, a quiescent voltage 
is applied from the horizontal unit to create a difference of 
potential between the two plates. This voltage can be either 
positive or negative with respect to the +125 volts on the 
other plate. The potential difference created is sufficient 
to deflect the writing-gun beam so that it is absorbed in 
the deflection structure and does not reach the screen. 

The writing-gun beam is unblanked whenever the two 
deflection plate voltages become equal. For example, if 
a sweep occurs, if the LOCATE button is pressed, or if 
the horizontal plug-in unit is removed, the voltages are 
made equal and the beam is allowed to pass through to 
the CRT screen. Sweep unblanking is produced by either 
a positive or negative gate pulse (depending on the quies- 
cent level) applied to pin 5, equaling the +125 volts 
normally present at pin 7. Beam unblanking when the LO- 
CATE button is pressed is accomplished by disconnecting 
pin 7 from the +1 25-Volt Supply, allowing the two plates 
to become equalized through R244. In a like manner, when 
the horizontal plug-in unit is removed, the two deflection 
plates are equalized through R244 at +125 volts. 

Intensity Modulation 

The intensity of the writing-beam display may be modu- 
lated by applying signals to either the grid or the cathode 
of the writing gun. 

Intensifying signals from a delayed sweep time-base plug- 
in unit are applied to the grid supply via pin 14 of the 
horizontal plug-in inter-connecting socket, J21. These signals 
brighten the delayed-sweep portion of the delaying-sweep 
display. When the time-base unit is set to Intensified, the 
writing-gun grid supply is referred to a negative voltage in 
the intensifying circuit through D275, reducing the overall 
display intensity. At this time, D272 is reverse biased by the 
negative voltage at the juncture of the two diodes. Intensi- 
fication results when the positive-going pulse from the time- 
base unit reverse biases D272 and the grid supply is 
referred to ground through D272 (as for normal operation). 
The positive-going pulse is then coupled through R275 and 
C275 to the CRT control grid. Thus the brightened portion 
of the display is the same intensity as a normal display and 
the background trace is dimmed. 

External modulating signals may also be applied to the 
writing gun by way of the cathode, through the rear-panel 
EXT INPUT connector, J255, and the CRT CATHODE SELECT- 
OR, SW255. With the INTENSITY control adjusted properly, 
a positive or negative pulse between 3 and 50 volts in 
amplitude will produce dimming or intensification of the 
writing beam. 

In using a multi-channel vertical plug-in amplifier that 
provides dual-trace chopped blanking pulses, the blanking 
pulses are applied via the interconnecting socket Jll and 
the CRT CATHODE SELECTOR to the CRT cathode circuit. 
These pulses are approximately 5 volts in amplitude, and 
at normal intensity levels are sufficient to cut off the CRT 



3-7 




Circuit Description — Type 5646 



rs, 

1 1| — vy\^ — 




oO 
o> 2 ^ 
o> — “ 

.2 o I 

H- ti C 
< 



I “ . 

I I I — ^ 

t© ' 



o K 

§ 2H 



■S 2 ^ ® o 
? -i: 

Q ^ c Q- o 
^ O 




k ^ ? o 

3 mi 

'^I'^Sro 

z «*o W 



-V 

i 1. 




3-8 



SW404 




Circuit Description — Type 564B 




writing beam during the time the amplifier channels in the 
vertical plug-in unit are being switched. 

STORAGE CIRCUIT 

The Storage Circuit provides the voltage levels necessary 
to operate the flood guns, collimation electrodes and target 
backplates. The storage cathode-ray tube has two targets 
for split-screen operation; therefore, two identical erase 
generators are provided, each consisting of an Erase 
Multivibrator and a Target Control Amplifier. These cir- 
cuits produce an erase waveform which will erase written 
information. Additional circuitry includes the Enhance 
Generator, which permits very fast single sweeps to be 
stored, and the INTEGRATE switch, which permits a stored 
image of a number of repetitive sweeps, each of which 
would be too fast to store alone as a single sweep event. 
Fig. 3-5 shows a detailed block diagram of the Storage 
Circuit. 

Storage Tube Basic Operating Principles 

The Tektronix T5641 CRT used in the Type 564B is a 
direct-view storage cathode ray tube with a split screen 
viewing area that permits each half to be individually oper- 
ated for stored displays. Storage, which is the retention on 
the CRT screen of a displayed event, is based on a secondary 
emission principle. A stream of primary electrons strikes an 
insulated target surface with sufficient energy to dislodge 
secondary electrons. As the potential increases, each primary 
electron dislodges more than one secondary electron, result- 
ing in the target material charging position. The target ap- 
proaches the backplate potential, yielding a higher energy 
flood electron and resulting in light output. 



The storage cathode ray tube contains special storage 
elements in addition to the conventional writing gun ele- 
ments. The operating mode of the tube depends primarily 
on the voltages applied to these storage electrodes. With 
one condition of applied potentials, the storage screen or 
target backplate operates in the ready-to-write state; then, 
when it is bombarded with high energy writing beam 
current, the bombarded portion shifts to the stored mode 
to store a written display. With a different set of applied 
voltages, the screen (target) operates in the conventional 
mode, similar to a conventional cathode ray tube. 

The storage screens contain a special coated surface 
which continues to emit light when bombarded by the flood 
gun electrons, provided the surface has been written by the 
writing gun beam and shifted to the stored state. The two 
targets are electrically isolated from each other, which 
allows simultaneous presentations of stored information on 
one half and non-store (conventional) information on the 
other half of the viewing area. 

Fig. 3-6 illustrates the basic construction of the T5641 
storage tube. The flood guns are low-energy electron guns 
which direct a large area flow, or cones, of electrons to- 
ward the entire screen. The collimation electrodes shape 
the flood spray for uniform coverage of the storage targets. 
The operating level of the tube is the potential difference 
between the target backplates and the flood gun cathodes. 
The collimation electrodes have no effect on the bombard- 
ing energy of the flood gun electrons. 

In the store mode ready-to-write state, the insulator surface 
of the target tends to charge down to a potential lower 
than the backplate potential, and toward the potential of 



®l 



3-9 






Circuit Description — Type 564B 



the flood gun cathode. This is due to flood gun current 
from the insulator surface. The potential to which the target 
charges is called its rest potential. This potential is such 
that the flood gun electron landing energy is not enough 
to illuminate the phosphor in the target. The target is now 
ready to write. See Fig. 3-7. 

In the writing process, the target is scanned by the writing 
gun electrons. These high energy electrons increase the tar- 
get secondary emission over the area they scan, so that the 
ratio of secondary current to primary current becomes 
greater than one. (This is shown in Fig. 3-7B as the first 
crossover point.) When this ratio exceeds one, that part 
of the bombarded surface shifts to a new stable state. 
Writing has been accomplished and this segment of the 
target is now stored. 

In the written state, the potential difference between the 
flood gun cathode and target becomes greater and the 
flood gun electrons now have a landing energy that is 
sufficient to provide a visual display. This visual display 
will continue as long as the flood gun beam covers the 
target. 

At high sweep rates, the writing beam current is not ade- 
quate to bring the portion of the target scanned above the 
crossover point; therefore, the flood gun electrons when 
landing on the bombarded area will remove the charge 
developed by the writing gun electrons, and the target will 
discharge to its initial ready-to-write state without being 
written. Thus, complete writing is a function of writing 
beam current density. 

When the stored display is no longer desired, the informa- 
tion is erased by a waveform as illustrated in Fig. 3-8. 
A positive-going pulse is first applied, to raise the backplate 
voltage above the writing threshold and write the entire 
target area with flood gun electrons. Next, the backplate 
voltage is pulled well below the rest potential, then as the 
backplate voltage is gradually returned, the target is 
charged to the rest potential and the target is in the ready- 
to-write state. 

For a comprehensive study of storage tube operating 
principles, a Tektronix Circuit Concepts paperback book 
entitled “Storage Cathode-Ray Tubes and Circuits” is avail- 
able through your local Tektronix, Inc., Field Office or 
representative. Tektronix Stock No. 062-0861-00. 




Flood Guns and Collimation Electrodes 

Two low-energy electron guns, or flood guns, are used 
in the Type 564B. The cathodes are grounded and the 
Flood Gun Grid control, R478, is adjusted to set the bias 
at approximately — 50 volts. 

The collimation electrodes serve as an electrostatic lens 
to distribute the flood gun electrons uniformly over the stor- 
age target, and they have no effect on the landing energy 
of the electrons. CEl, CE2 and CE3 cause the flood electrons 
to converge, while CE4 and CE5 provide fine adjustment of 
the flood electron trajectories to cover the extreme rim of 
the targets and optimize uniformity of the target coverage. 
Zener diode D473 maintains a 50-volt drop to establish the 
-|-250-volt level applied to CE2, while the setting of R475, 
Geometry, establishes the level applied to CEl (Flood Gun 
Anode). Potentiometer R470 (Collimation #1) provides a 



Fig. 3-7. (A) Relative scale of characteristic storage-tube operat- 
ing potentials; (B) secondary emission curve for insulator showing 
charging. 

means of varying the DC levels applied to CE3 to obtain 
the correct electrostatic lens configuration. Voltage levels 
for CE4 and CE5 are established by divider network R462- 
R463-R465-R467. R462 (Collimation #2) is adjusted to achieve 
uniform luminance. The Target Control Amplifiers control 
CE4 and CE5 during the erase pulse so that correct collima- 
tion is maintained when the operating level of the tube is 
changed. 

Target Control Amplifiers 

The Target Control Amplifiers are incorporated to main- 
tain a high degree of control of the upper and lower 




Circuit Description — Type 564B 



storage target backplate voltages. These are emitter-follow- 
er operational amplifiers, consisting of Q347 and Q351 
for the upper target backplate, and Q447 and Q451 for 
the lower target backplate. The amount of output accuracy 
is limited primarily only by the tolerances in the values of 
the passive elements used in the input and feedback net- 
works. A bootstrapping circuit is provided for each Target 
Control Amplifier to maintain transistor operating voltage 
during the positive-going portion of the erase waveform 
(fade positive) and to provide correct collimation at the 
same time. The bootstrapping circuits will be described in 
full detail in the Erase Generator discussion. 

A separate STORE switch is provided for each Target 
Control Amplifier, SW300 (upper) and SW400 (lower), allow- 
ing the target backplates to be operated individually. In 
the STORE mode, that is, when the STORE switches are 
pushed in and the CRT is shifted to the ready-to-write state, 
the backplate voltages are adjusted individually by the Op 
Level controls, R332 and R432. These controls set the value 
of current to the operational amplifier null points (Q347 
and Q447 bases). In the non-store, or conventional mode, 
the backplate voltages are established by adjustment of 
R342, Non-Store Level. 



Fade positive 
pulse 




Fig. 3-8. Typical erase cycle waveform. 



Erase Generator 

NOTE 

The following description applies to both erase 
generators; however, the circuit numbers used are 
those of the upper circuit. 

In order to erase the stored display, a fade-positive 
pulse is first applied to the storage target backplate. This 
increases the potential difference between the flood gun 
cathodes and target backplate, raising the operating level 
above the upper writing limit and writing the entire target 
area with flood gun electrons. Next, the backplate voltage 
is pulled negative, well below the retention threshold. Then 



as the backplate voltage is gradually returned, the target is 
charged to the rest potential and returned to the ready-to- 
write state. The following paragraphs describe how the 
erase waveform is generated. 

The Erase Multivibrator is composed of Q325, Q328 and 
their associated circuit components. This is a monostable 
multivibrator, with Q325 quiescently saturated and Q328 
cut off. The collector potential of Q328 is set slightly above 
ground by the conduction of D329. Capacitor C323 is 
charged to the voltage difference between the R321-R322 
juncture (about — 9 volts) and the Q328 collector. 

When the ERASE button is pushed, the contacts of SW304 
are closed, grounding R305. This produces a negative-going 
step which turns Q325 off and Q328 on. The collector of 
Q328 snaps down to about — 12 volts as the transistor satu- 
rates, drawing current through R338 and R353, causing the 
operational amplifier system to pivot about its imaginary 
fulcrum and pulling the target backplate positive. Thus the 
operating level is increased and the entire target area is 
written. 

When Q328 turns on, the negative-going step produced 
at its collector is also coupled through C323, turning D322 
off and ensuring cutoff of Q325. C323 begins to discharge 
through R321 and after an RC-controlled time of about 30 
milliseconds, current through R321 has diminished sufficient- 
ly to allow the voltage at the anode of D322 to rise above 
the turn-on level. The base of Q325 is also raised to the 
turn-on level, and the multivibrator is switched back to its 
quiescent state. 

While Q328 is conducting, the charge on C330 is removed. 
When Q328 turns off, its collector rises rapidly and is 
clamped slightly above ground by D329. This produces a 
positive-going step which is coupled through C330, reverse 
biasing D330. Once again, the operational amplifier system 
pivots about its imaginary fulcrum, pulling the target back- 
plate negative, well below the rest potential. As C330 
charges, the voltage at the R331-R332 juncture decays from 
zero volts to — 12.8 volts at an RC-controlled rate until D330 
turns on and clamps it. This negative-going sawtooth volt- 
age is applied to the operational amplifier, which produces 
a positive-going sawtooth to raise the backplate to the 
ready-to-write state. In addition to setting the quiescent 
operating level of the CRT, R332 proportionately sets the 
amplitude of the sawtooth portion of the erase waveform. 
R334 and R335 then determine not only the minimum DC 
operating level of the CRT, but also the minimum value of 
the sawtooth applied to the backplate by the combined 
effective resistance seen at their juncture. 

When the CRT is shifted from the conventional mode to 
the store mode, pushing the store button grounds C301, 
producing a negative trigger to switch the Erase Multivibra- 
tor and prepare the target for storage by applying an erase 
waveform. Remote erase function is provided through J950. 
A switch closure to ground or application of a negative- 
going pulse causes differentiating network C317-R318 to pro- 
duce a negative-going trigger, which is applied through 
D318 to the Erase Multivibrator. 

Maintaining operating voltage for Q347 and Q351 dur- 
ing the fade-positive portion of the erase waveform, when 
Q351 emitter is pulled positive, is accomplished by boot- 
strapping. The voltage drop across Zener diode D356 sets 
the base of Q358 150 volts below the emitter of Q351. This 






3-n 




Circuit Description — Type 564B 



voltage drop is kept constant under dynamic conditions by 
the essentially constant current established through R357, 
v/hich is clamped by the Q358 forward bias voltage (Vbe). 
When the emitter of Q351 is suddenly stepped positive by 
the erase waveform, the base of Q358 is stepped positive 
by the same amplitude. Q358 emitter follows the base, 
and the positive-going step is coupled through C355 to 
raise the collector of Q351 positive by essentially the same 
amplitude as that at its emitter, thus maintaining a fairly 
constant collector-to-emitter voltage. This action reverse 
biases D350, disconnecting the +300-Volt Supply. 

The positive-going pulse at Q351 collector is also connect- 
ed through D355 and C462 to collimation electrodes CE4 
and CE5 to provide correct collimation. When the fade 
positive pulse is terminated and the emitter of Q351 is 
pulled negative, D357 turns off, disconnecting the bootstrap 
circuit and allowing the collector of Q351 to return to its 
-f300-volt level. 

Enhance Generator 

Writing speed is primarily a function of the writing gun 
beam current density and physical properties of the storage 
tube. At very fast sweep speeds, the writing beam does not 
charge the scanned portion of the target sufficiently to shift 
them to the stored state, and the flood gun electrons dis- 
charge the small deposited charge back down to the rest 
potential before the next sweep. 

Writing beyond the normal writing speed of the CRT is 
attained through the process of enhancement or integration. 
First to be discussed will be enhancement. 

The enhance generator produces an approximate one- 
millisecond negative-going pulse which is applied to the 
operational amplifier summing point, resulting in a positive- 
going pulse to the target backplate. This conditions the 



target so that less writing gun current is required to shift 
the scanned section to the stored state. 

Q370, Q374 and their associated circuitry form a mono- 
stable multivibrator. Operation of this circuit is similar to 
that described for the Erase Multivibrator. When either 
ENHANCE switch (SW340 or SW440) is pushed in, Q370 
has a conduction path to ground through R370. Saturation 
voltage at Q370 collector holds Q374 cut off. The negative- 
going portion of the multi-trace sync pulse from the time- 
base plug-in unit is coupled through C361 to switch the 
Enhance Multivibrator. Q370 turns off and Q374 turns on. 
The collector of Q374 snaps down to about — 12 volts, 
producing a negative-going step which turns off D368. The 
length of time that the multivibrator remains in this state, 
and thus the pulse width, is determined by the setting of 
R366, ENHANCE, and the values of R367 and C367. The 
amplitude of the pulse which is applied to the operational 
amplifier summing point is determined by R373, Enhance 
Amplitude. 



Integrate 

The second fast writing technique to be discussed is inte- 
gration. In this mode of operation, the flood gun beam is 
interrupted momentarily, allowing the writing gun beam to 
sum small amounts of charge for successive sweeps so that 
when the flood electrons are again turned on the scanned 
target area shifts to the stored state. This is accomplished 
by pressing SW480, INTEGRATE, which disconnects the flood 
gun cathodes from ground. This also connects a resistor 
into the divider network in the High Voltage Regulator cir- 
cuit to shift the high voltage slightly, correcting for the 
deflection sensitivity changes that occur when the flood guns 
are turned off. Releasing the INTEGRATE switch, then, allows 
the display to shift to the stored state. 




SECTION 4 
MAINTENANCE 



Type 564B 



Change information, if any, affecting this section will be found at the 
rear of the manual. 



Introduction 

This section of the manual contains information for use in 
preventive maintenance, corrective maintenance and trouble- 
shooting of the Type 564B. 

Cover Removal 

The side panels of the Type 564B are held in place with 
slotted-head fasteners that can be released with a broad- 
blade screwdriver or a coin. To remove the panels, turn 
each fastener a quarter turn counterclockwise. The bottom 
panel is held in place with truss-head machine screws. For 
normal operation, the panels should be left on the instru- 
ment to keep dust out. 



PREVENTIVE MAINTENANCE 

General 

Preventive maintenance consists of periodic inspection and 
cleaning at regular intervals. The Type 564B should be 
checked approximately every 500 hours of operation, or 
every six months, whichever occurs first. If the instrument is 
subjected to adverse environmental conditions, such as ex- 
cessive dust, high temperatures or high humidity, the fre- 
quency of the checks should be increased. A convenient 
time to perform preventive maintenance is preceding recali- 
bration of the instrument. 



Cleaning 

The Type 564B should be cleaned as often as operating 
conditions require. Accumulation of dirt in the instrument 
can cause overheating and component breakdown. Dirt on 
components acts as an insulating blanket and prevents ef- 
ficient heat dissipation. It also provides an electrical con- 
duction path. 

The side and bottom covers provide protection against 
dust in the interior of the instrument. Operation without the 
covers in place necessitates more frequent cleaning. 

CAUTION 

Avoid the use of chemical cleaning agents which 

might damage the plastics used in this instrument. 

Avoid chemicals which contain benzene, toluene, 

xylene, acetone or similar solvents. 

Exterior. Loose dust accumulated on the outside of the 
Type 564B can be removed with a soft cloth or small paint- 
brush. The paintbrush is particularly useful for dislodging 



dirt on and around the front-panel controls. Dirt which 
remains can be removed with a soft cloth dampened in a 
mild detergent and water solution. Abrasive cleaners should 
not be used. 

Clean the graticule and CRT face with a soft, lint-free 
cloth dampened with a mild detergent and water solution. 

Interior. Dust in the interior of the instrument should be 
removed occasionally due to its electrical conductivity under 
high-humidity conditions. The best way to clean the interior 
is to blow off the accumulated dust with dry, low-pressure 
air. Remove any dirt which remains with a soft paintbrush 
or a cloth dampened with a mild detergent and water solu- 
tion. A cotton-tipped applicator is useful for cleaning in 
narrow spaces and/or circuit boards. 

The high voltage circuits, particularly parts located in the 
high-voltage compartment and the area surrounding the 
CRT socket should receive special attention. Excessive dirt 
in these areas may cause high-voltage arcing and result 
in improper instrument operation. 

Lubrication 

The reliability of potentiometers, rotary switches and other 
moving parts can be maintained if they are kept properly 
lubricated. Use a cleaning-type lubricant (e.g., Tektronix 
Part No. 006-0218-00) on switch contacts. Lubricate switch 
detents with a heavier grease (e.g., Tektronix Part No. 006- 

0219- 00). Potentiometers which are not permanently sealed 
should be lubricated with a lubricant which does not af- 
fect electrical characteristics (e.g., Tektronix Part No. 006- 

0220- 00). The pot lubricant can also be used on shaft bush- 
ings. Do not over lubricate. A lubrication kit containing the 
necessary lubricants and instructions is available from Tek- 
tronix, Inc. Order Tektronix Part No. 003-0342-00. 

Visual Inspection 

The Type 564B should be inspected occasionally for such 
defects as broken connections, improperly seated transistors, 
damaged circuit boards and heat-damaged parts. 

The corrective procedure for most visible defects is ob- 
vious; however, particular care must be taken if heat-dam- 
aged components are found. Overheating usually indicates 
other trouble in the instrument; therefore, it is important that 
the cause of overheating be corrected to prevent a recur- 
rence of the damage. 

Transistor Checks 

Periodic checks of the transistors in the Type 564B are not 
recommended. The best check of transistor performance is 



® 



4-1 




Maintenance — Type 564B 



its actual operation in the instrument. More details on check- 
ing transistor operation are given under Troubleshooting. 

Recalibration 

To assure accurate measurements, check the recalibration 
of this instrument after each 500 hours of operation or every 
six months if used infrequently. In addition, replacement of 
components may necessitate recalibration of the affected 
circuits. Complete calibration instructions are given in the 
Calibration section. 

The calibration procedure can also be helpful in localiz- 
ing certain troubles in the instrument. In some cases, minor 
troubles may be revealed and/or corrected by recalibra- 
tion. 

TROUBLESHOOTING 

Introduction 

The following information is provided to facilitate trouble- 
shooting in the Type 564B. Information contained in other 
sections of this manual should be used along with the fol- 
lowing information to aid in locating the defective compo- 
nents. When replacing a defective semiconductor, be cer- 
tain that all associated components are in good condition 
before application of power; a precaution which may pre- 
vent further damage. An understanding of the circuit opera- 
tion is very helpful in locating troubles. See the Circuit De- 
scription section tor complete information. 

Troubleshooting Aids 

Diagrams. Circuit diagrams are given on foldout pages 
in Section 8. The component number and electrical value of 
each component in this instrument are shown on the dia- 
grams. Each main circuit is assigned a series of component 
numbers. Table 4-1 lists the main circuits in the Type 564B 
and the series of component numbers assigned to each. 
Important voltages and waveforms are also shown on the 
diagrams at the rear of this manual. The portion of the cir- 
cuit mounted on the circuit board is enclosed with a blue 
line. 

TABLE 4-1 



Component Numbers 



Component 
Numbers on 
Diagrams 


Diagram 

Number 


Circuit 


1-99 


1 


Power Supply 


100-110 


2 


Plug-in Connectors 


150-199 


3 


1 kHz Calibrator 


200-299 


4 


CRT Circuit 


300-499 


5 


Storage Circuit 



Switch Wafer Identification. Switch wafers shown on 
the diagrams are coded to indicate the position of the wafer 
in the complete switch assembly. The numbered portion of 
the code refers to the wafer number counting from the front, 
or mounting end of the switch, toward the rear. The letters 
F and R indicate whether the front or rear of the wafer per- 



forms the particular switching function. For example, a 
wafer designated 2R indicates that the rear of the second 
wafer (from the front) is used for this particular switching 
function. 

Circuit Boards. Figs. 4-5 through 4-9 show the circuit 
boards used in the Type 564B. Each electrical component 
on each board is identified by its circuit number. The cir- 
cuit board is also outlined on its schematic diagram with a 
blue line. These pictures used with the diagrams will aid 
in locating the components mounted on the circuit boards. 

Wiring Color Code. All insulated wire and cable used 
in the Type 564B is color-coded to facilitate circuit tracing. 
Signal carrying leads are identified with three stripes to 
indicate the approximate voltage, using the EIA resistor 
color code. A white background color indicates a posi- 
tive voltage and a tan background indicates a negative 
voltage. The widest color stripe identifies the first color of 
the code. Table 4-2 gives the wiring color code for the 
power supply voltages used in the Type 564B. 



TABLE 4-2 

Power Supply Wiring Color Code 



Supply 


Back- 

ground 

Color 


First 

Stripe 


Second 

Stripe 


Third 

Stripe 


+300 V 


White 


Orange 


Black 


Brown 


+ 125V 


White 


Brown 


Red 


Brown 


-12.2 V 


Tan 


Brown 


Red 


Black 


-100 V 


Tan 


Brown 


Black 


Brown 



Resistor Color Code. In addition to the brown composi- 
tion resistors, some metal-film resistors and some wire-wound 
resistors are used in the Type 564B. The resistance values 
of wire-wound resistors are printed on the body of the com- 
ponent. The resistance value of composition resistors and 
metal-film resistors are color-coded on the components with 
EIA color code (some metal-film resistors may have the value 
printed on the body). The color code is read starting with 
the stripe nearest the end of the resistor. Composition re- 
sistors have four stripes which consist of two significant 
figures, a multiplier and a tolerance value (see Fig. 4-1). 
Metal-film resistors have five stripes consisting of three sig- 
nificant figures, a multiplier and a tolerance value. 

Capacitor Marking. The capacitance values of common 
disc capacitors and small electrolytics are marked in micro- 
farads on the side of the component body. The white ce- 
ramic capacitors used in the Type 564B are color coded 
in picofarads using a modified EIA color code (see Fig. 4-1). 

Diode Color Code. The cathode end of each glass- 
enclosed diode is indicated by a stripe, a series of stripes 
or a dot. For most silicon or germanium diodes with a series 
of stripes, the color code identifies the three significant digits 
of the Tektronix Part Number using the resistor color-code 
system (e.g., a diode color-coded blue-brown-gray-green (6, 
1, 8, 5) indicates Tektronix Part Number 152-0185-00). The 
cathode and anode ends of metal diodes can be identified 
by the diode symbol marked on the body. 

Troubleshooting Equipment 

The following equipment is useful for troubleshooting the 

Type 564B: 



4-2 




Maintenance — Type 564B 



1 Resistor and Capacitor Color Code | 




Signifi- 

cant 

Figures 


Multiplier 


Tolerance | 


Resis- 

tors 


Capaci- 

tors 


Resis- 

tors 


Capaci- 

tors 


Composition Resistors: Silver 




10-2 


— 


±10% 


— 




... 


10-1 


... 


±5% 


... 


_0© ““ 


0 


1 


1 


— 


±20% or 
2pF* 




1 


10 


10 


±1% 


±1 % or 
0.1 pF* 


CD 

CL 


2 


10^ 


102 


±2% 


±2% 


Metal-Film Resistors: Orange 


3 


10« 


10" 


±3% 


±3% 


Yellow 


4 


10^ 


10" 


±4% 


+ 100% 
-0% 




5 


10® 


10® 


±0.5% 


±5% or 
0.5 pF* 


Blue 


6 


10" 


10" 


... 


--- 


Violet 


7 


... 








Ceramic Capacitors: 1 Gray 

1 1 - - 


8 




10-2 




+80% 
-20% 
or 0.25 pF* 


White 


9 


— 


10-1 


— 


±10% or 
1 pF* 


(none) 

and — 1 St, 2nd and 3rd significant figures; 


... 


... 




±20% 


±10% or 
1 pF* 


*For capacitance of 10 pF or less. 

— multiplier; — tolerance; 

— temperature coefficient. NOTE: and/or color code for capacitors depends upon 

manufacturer and capacitor type. May not be present in some cases. 



Fig. 4-1. Standard EIA color coding for resistors and capacitors. 



1. Transistor Tester 

Description: Tektronix Type 575 Transistor Curve Tracer 
or equivalent. 

Purpose: To test the semiconductors used in this instru- 
ment. 

2. Multimeter 

Description: Electronic Voltmeter, 10 megohms or great- 
er input resistance; 0 to 500 volts; 0 to 50 megohms. Ac- 
curacy, within 3% (1 % accuracy is necessary to check 
power supply voltages). Test prods must be insulated to 
prevent accidental shorting. 

Purpose: To check operating voltages and for general 
troubleshooting in this instrument. 

NOTE 

A 20,000 ohms/volt VOM can be used to check 
the voltages in this instrument if allowances are 
made for the circuit loading of the VOM at high 
impedance points. 

3. Test Oscilloscope (with IX and lOX probes). 

Description. DC to 1 MHz frequency response, 1 mV to 
lOV/division deflection factor. 



Purpose: To check waveforms in the instrument. 

Troubleshooting Techniques 

This troubleshooting procedure is arranged in an order 
which checks the simple trouble possibilities before proceed- 
ing with extensive troubleshooting. The first few checks 
assure proper connection, operation and calibration. If the 
trouble is located by these checks, the remaining steps aid 
in locating the defective component. When the defective 
component is located, it should be replaced following the 
replacement procedures given under Corrective Mainte- 
nance. 

1 . Check Control Settings. Incorrect control settings can 
indicate a trouble that does not exist. If there is any ques- 
tion about the correct function or operation of any control, 
see the Operating Instructions section of the manual. 

2. Check Associated Equipment. Before proceeding 
with troubleshooting of the Type 564B, check that the equip- 
ment used with this instrument is operating correctly. Sub- 
stitute another vertical or time-base plug-in which is known 
to be operating properly. Check that the signal is properly 
connected and that interconnecting cables are not defective. 
Also, check the power source. 

3. Visual Check. Visually check the portion of the in- 
strument in which the trouble is located or suspected. Many 



Maintenance — Type 564B 




Fig. 4-2. Transistor electrode configuration data. 



troubles can be located by visual indications such as un- 
soldered connections, broken wires, damaged circuit boards, 
damaged components, etc. 

4. Check Instrument Calibration. Check the calibration 
of this instrument, or the affected circuit if the trouble exists 
in one circuit. The apparent trouble may only be a result of 
misadjustments or may be corrected by calibration. Com- 
plete calibration instructions are given in the Calibration 
section of this manual. 

5. Isolate Trouble to a Circuit. To isolate trouble to 
a circuit, note the trouble symptom. The sympton often 
identifies the circuit in which the trouble is located. For 



example, poor focus indicates that the CRT Circuit (includes 
high voltages) is probably at fault. When trouble symptoms 
appear in more than one circuit, check affected circuits by 
taking voltage and waveform readings. 

Incorrect operation of all circuits often indicates trouble 
in the power supplies. However, a defective component else- 
where in the instrument can appear as a power supply 
trouble and may also affect the operation of other circuits. 

NOTE 

Turn the instrument off before attempting to re- 
move or replace connections to any circuit board. 



4-4 







Maintenance — Type 564B 



Table 4-3 lists the tolerances of the power supplies in this 
instrument. If a power supply voltage is within the listed 
tolerance, the supply can be assumed to be working cor- 
rectly. If outside the tolerance, the supply may be mis- 
adjusted or operating incorrectly. Use the procedure given 
in the Calibration section to adjust the power supplies. 

TABLE 4-3 



Power Supply Tolerances 



Power Supply 


Tolerance 


-3300 V 


Within 3% 


-lOOV 


Within 0.5% 


-12.2 V 


Within 1.2% 


+ 125V 


Within 1.5% 


-f300V 


Within 1.5% 



6. Check Circuit Board Interconnections. After the 
trouble has been isolated to a particular circuit, check the 
pin connectors on the circuit board for correct connection. 
Figs. 4-5 through 4-9 show the correct connection for each 
board. 

The pin connectors used in this instrument also provide 
a convenient means of circuit isolation. For example, a short 
circuit in a power supply can be isolated to the power sup- 
ply itself by disconnecting the pin connectors for that volt- 
age at the remaining boards. 

7. Check Voltages and Waveforms. Often the defec- 
tive component can be located by checking for correct volt- 
ages or waveforms in the circuit. Ideal voltages are given 
on the diagrams. 

NOTE 

Voltages given on the diagrams are calculated 
with the assumption that conditions are ideal (var- 
iable components at design center, etc.), and may 
vary slightly from actual measured voltages. 

8. Check Individual Components. The following pro- 
cedures describe methods of checking the individual com- 
ponents in the Type 564B. Components which are soldered 
in place are best checked by disconnecting one end. This 
isolates the measurement from the effects of surrounding 
circuitry. 

A. TRANSISTORS. The best check of transistor operation 
is actual performance under operating conditions. If a trans- 
istor is suspected of being defective it can best be checked 
by substituting a new component or one which has been 
checked previously. However, be sure that circuit conditions 
are not such that a replacement transistor might also be 
damaged, if substitute transistors are not available, use a 
dynamic tester (such as Tektronix Type 575). Static type 
testers may be used, but since they do not check operation 
under simulated operating conditions, some defects may go 
unnoticed. Fig. 4-2 shows transistor base pin and socket 
arrangements. Be sure power is off before attempting to 
remove or replace any transistor. 

B, DIODES. A diode can be checked for an open or 
shorted condition by measuring the resistance between 
terminals. With an ohmmeter scale having an internal source 
of between 800 millivolts and 3 volts, the resistance should 
be high in one direction and low when the leads are reversed. 



C. RESISTORS. Check the resistors with an ohmmeter. See 
the Elecrical Parts List for the tolerance of the resistors used 
in this instrument. Resistors normally need not be replaced 
unless the measured value varies widely from the specified 
value. 

D. CAPACITORS. A leaky or shorted capacitor can be de- 
termined by checking resistance with an ohmmeter on the 
highest scale. Use an ohmmeter which will not exceed the 
voltage rating of the capacitor. The resistance reading should 
be high after initial charge of the capacitor. An open ca- 
pacitor can best be detected with a capacitance meter or 
by checking whether the capacitor passes AC signals. 

9. Troubleshooting in the Low Voltage Power Sup- 
plies. The low voltage supplies incorporate special cir- 
cuitry to prevent damage due to short circuits on the voltage 
output lines. When this circuitry is operating properly, the 
low voltage supplies are extremely reliable. If any trouble 
occurs in the low-voltage power supply (Diagram 1), be cer- 
tain that all defective components are replaced before re- 
application of power. Otherwise uncorrected problems could 
cause further damage, including damage to the new com- 
ponent. Although every situation cannot be predicted, such 
occurrences will be unlikely if the following precautions are 
taken: 

A. Turn the power off. 

B. If the problem is possibly in the — 100-, -fl25- or 
+ 300-volt supplies, visually check current sensing resistors 
R33, R75 and R94 for charring or cracking. For location of 
components, refer to Fig. 4-5. 

C. Check current-sensing transistors Q30, Q38, Q70 and 
Q91 on a transistor checker. 

D. If a current-sensing resistor or transistor has failed, 
check all remaining diodes and transistors in the correspond- 
ing section of circuitry (See Table 4-4). Most of the diodes 
mentioned can be checked in the circuit using an ohmmeter. 



TABLE 4-4 



Component Failure 


Check 


Q38 


D35A, D35B, D47, Q44, Q46, Q49, 
Q51 


Q30 or R33 


D8A, D8B, D8C, DSD, D19, D25, 
D31, Q12, Q14, Q24, Q28, Q30, 
Q32 


Q70, Q91, R75 or R94 


D53A, D53B, D53C, D53D, D62, 
D55, D75, D76, D77A, D77B, D77C, 
D77D, D80, D95, Q58, Q60, Q66, 
Q68, Q74, Q84, Q86, Q88, Q90, 
Q96 



E. Make a careful visual check of R8, R52, R53, R61, R69, 
R77 and R87 for charring or cracks. 

F. Re-apply the power. If a line-voltage autotransformer is 
available, gradually increase the line voltage from zero 
volts to 115 volts (or to the center of the regulating range 
to which the Voltage Selector Assembly is set) while monitor- 
ing the output of the low-voltage supply. 

10. Repair and Readjust the Circuit. If any defective 
parts are located, follow the corrective maintenance pro- 
cedures given in this section. Be sure to check the perform- 



@1 



4-5 




Maintenance — Type 564B 



ance of any circuit that has been repaired or that has had 
any electrical components replaced. 

CORRECTIVE MAINTENANCE 

General 

Corrective maintenance consists of component replacement 
and instrument repair. Special techniques required to replace 
components in this instrument are given here. 

Obtaining Replacement Parts 

Standard Parts. All electrical and mechanical part re- 
placement for the Type 564B can be obtained through your 
local Tektronix Field Office or representative. However, 
many of the standard electronic components can be obtained 
locally in less time than is required to order them from Tek- 
tronix, Inc. Before purchasing or ordering replacement parts, 
check the parts lists for value, tolerance, rating and descrip- 
tion. 

NOTE 

When selecting replacement parts, it is important 
to remember that the physical size and shape of 
the component may affect its performance in the 
instrument. All replacement parts should be direct 
replacements unless it is known that a different 
component will not adversely affect instrument 
performance. 

Special Parts. In addition to the standard electronic com- 
ponents, some special parts are used in the Type 564B. These 
parts are manufactured for Tektronix, Inc., in accordance with 
our specifications. These special parts are indicated in the 
parts lists by an asterisk preceding the part number. Most 
of the mechanical parts used in this instrument have been 
manufactured by Tektronix, Inc. Order all special parts 
directly from your local Tektronix Field Office or representa- 
tive. 

Ordering Parts. When ordering replacement parts from 
Tektronix, Inc., include the following information: 

1. Instrument Type. 

2. Instrument Serial Number. 

3. A description of the part (if electrical, include the cir- 
cuit number). 

4. Tektronix Part Number. 



Soldering Techniques 

WARNING 

Disconnect the instrument from the power source 
before soldering. 

Circuit Boards. Use ordinary 60/40 solder and a 35 to 40 
watt pencil-type soldering iron on the circuit boards. The tip 
of the iron should be clean and properly tinned for best heat 
transfer to the solder joint. A higher wattage iron may separ- 
ate the wiring from the base material. 



The following technique should be used to replace a com- 
ponent without removing the boards from the instrument. 

1. Grip the component lead with long-nose pliers. Touch 
the soldering iron tip to the lead at the solder connection. 
Do not lay the iron directly on the board as it may damage 
the board. See Fig. 4-3. 

2. When the solder begins to melt, pull the lead out gently. 
This should leave a clean hole in the board. If not, the hole 
can be cleaned by reheating the solder and placing a sharp 
object such as a toothpick into the hole to clean it out. 

3. Bend the leads of the new component to fit the holes in 
the board. Insert the leads into the holes in the board so the 
component is firmly seated against the board (or as posi- 
tioned originally). If it does not seat properly, heat the solder 
and gently press the component into place. 

4. Touch the iron to the connection and apply a small 
amount of solder to make a firm solder joint. To protect 
heat-sensitive components, hold the lead between the com- 
ponent body and solder joint with a pair of long-nose pliers 
or other heat sink. 

5. Clip the excess lead that protrudes through the board 
(if not clipped in step 3). 

6. Clean the area around the solder connection with a 
flux-remover solvent. Be careful not to remove information 
printed on the board. 

Metal Terminals. When soldering metal terminals (e.g., 
switch terminals, potentiometers, etc.) ordinary 60/40 solder 
can be used. Use a soldering iron with a 40 to 75 watt rat- 
ing and a Vg-inch wide wedge-shaped tip. 

Observe the following precautions when soldering metal 
terminals: 

1. Apply heat only long enough to make the solder flow 
freely. 

2. Apply only enough solder to form a solid connection. 
Excess solder may impair the function of the part. 

3. If a wire extends beyond the solder joint, clip off the 
excess. 

4. Clear the flux from the solder joint with a flux-remover 
solvent. 




Fig. 4-3. Removing or replacing components on circuit board. 



Maintenance — Type 564B 



.Ceramic Strip 



-Stud 












Chassis 



/ Ik 

Spacer 



V 

^Stud Pin 



Fig. 4-4. Ceramic terminal strip assembly. 



Component Replacement 

WARNING 

Disconnect the instrument from the power source 

before replacing components. 

Ceramic Terminal Strip Replacement. A complete cer- 
amic terminal strip assembly is shown in Fig. 4-4. Replace- 
ment strips (including studs) and spacers are supplied under 
separate part numbers. However, the old spacers may be re- 
used if they are not damaged. The applicable Tektronix 
Part Number for the ceramic strips and spacers used in this 
instrument are given in the Mechanical Parts List. 

To replace a ceramic terminal strip, use the following 
procedure: 

REMOVAL: 

1. Unsolder all components and connections on the strip. 
To aid in replacing the strip, it may be advisible to mark 
each lead or draw a sketch to show location of the com- 
ponents and connections. 

2. Pry or pull the damaged strip from the chassis. Be 
careful not to damage the chassis. 

3. If the spacers come out with the strip, remove them from 
the stud pins for use on the new strip (spacers should be 
replaced if they are damaged). 

REPLACEMENT: 

1. Place the spacers in the chassis holes. 

2. Carefully press the studs of the strip into the spacers 
until they are completely seated. 

3. If the stud extends through the spacers, cut off the ex- 
cess. 

4. Replace all components and connections. Observe the 
soldering precautions given under Soldering Techniques in 
this section. 

Circuit Board Replacement. If a circuit board is dam- 
aged beyond repair, either the entire assembly including 
all soldered-on components, or the board only, can be re- 
placed. Part numbers are given in the Mechanical Parts List 



for either the completely wired or the unwired board. Many 
of the components mounted on the circuit boards can be 
replaced without removing the boards from the instrument. 
Observe the soldering precautions given under Soldering 
Techniques in this section. However, if the bottom side of the 
board must be reached or if the board must be moved 
to gain access to other areas of the instrument, the mounting 
screws need to be removed and it may be necessary to dis- 
connect some of the interconnecting wires from the pin con- 
nectors. Refer to Figs. 4-5 through 4-9 for component loca- 
tions and interconnecting wire identifying colors. 

GENERAL: 

Most of the connections to the circuit boards are made with 
pin connectors. However, the connections to the switch inter- 
face boards and the connections to the High Voltage circuit 
boards are soldered. See the special removal instructions to 
remove these boards as units. 

Use the following procedure to remove a circuit board. 

1. Disconnect all the pin connectors. 

2. Remove all screws (if any) that hold the board to the 
chassis. 

3. Push the plastic mounting clips away from the edge of 
the circuit board and lift the board out of the instrument. Do 
not force or bend the board. 

4. To replace the board, reverse the order of removal. 
Replace the pin connectors carefully so they mate correctly 
with the pins. If forced into place incorrectly positioned, the 
pin connectors may be damaged. 

SWITCH INTERFACE BOARD REMOVAL: 

1. Remove the four machine screws (with washers and nuts) 
holding the boards to the mounting bracket. 

2. Carefully slide the board and switch assembly away 
from the sub-panel until it can be lifted out of the instrument. 

3. Unsolder the interconnecting wire straps between the 
two boards. Observe soldering precautions given earlier. 

4. With the two boards separated, either board can now 
be unsoldered from the cable harness to completely detach 
it from the instrument. 

5. To replace the boards, reverse the order of removal. 

HIGH VOLTAGE BOARD REMOVAL: 

1. Remove the metal high voltage shield (it is secured to 
the chassis by two nuts on the opposite side of the chassis). 

2. Remove the plastic cover on the high voltage compart- 
ment( it is held in place with three screws). 

3. Unsolder the two diodes connected between the boards 
and the high-voltage transformer. Extra care should be used 
to avoid damaging the plastic compartment with the soldering 
iron. 

4. Ease the board assembly out of the plastic compartment, 
while unsoldering the wires on the side nearest the trans- 
former. Unsolder other wires as necessary until the entire 
assembly can be removed as a unit. 

5. To replace the boards, reverse the order of removal. 




Maintenance — Type 564B 



Twisted 

wires 



'AU' Grn on wht 
'AT' Yel on wht 

'AS' Brn on wht 

'AR' Gry on wht 
'AQ' BIk-yel on wht 



D217 „ 






C217 



^R217,^- 




C215 



Q151 Q159 Q162 

,-,r4p 15 1 Lr\- - - -- . 

^■^D159C^3^D161^ f*fb168^^■ 



. kD: 

r^^ri Q214k 




...SB jgiiliiiJlBiii 

!:■ l54R 2f4b r},- ■ >vj| C157 

' R20eUc203L 

T^-R208^~ iC209> 

I R89l 






p-- ■: ,. , R8l| Q88 )^plR91^ 

v<- 1 

m,. 



•■>1 

-f 



8209 

W , - ■ ■ > ■ 

■■ R150 

,., ..’W;.:,, 

«S8 14! CS8 ; D88 fli^ "" - 

' rose . tCQ68l%%® f-;*' ■ ■• 

^ D62^ * '^064 ^ R62 ' 



R166- 



R158' 



D95 




R59 

R57;fSc»^ 'r 

■ *: 'l ^Q60 



=iR69 



5 #*“ 

% ,R43_ r 

Si |f,-^"Di9!:-^ *''- 

s Ri8fr-.':^i2^n 

y%=iRi9*- ' ■ ■*' 




C47 



S I ip: 

? ;'^-:T'R2o 

^ ia<-« 

'-V 



R2li 



=■. R40_^ ri4».,<. ^ .4 

jRlli-O ^'- ' ?^!D25- r\/ 

J-. »'■ -\. _: v,.,-.5R26t?r>-. 

Q24X ' ^ 



I Cinjf , ■“^■■ 



DIO;^ 

~ - ■■ _-' ff"c24 

C16 1 



D31 J 



■■^>#!.1^R16Lr5{^ 



A^#wT^~ ^ fl'>”'-''rD24rA'-f 




AV“. 






R30 r. ^ 

!R2^^ ■■; 



'A' Grn-grn on gry 
(coax) 

“ 'B' Coax shield 

- 'C' Vio on wht 

- 'D' Brn on wht 
“ 'E' Red on wht 

- 'F' Orn-blk-brn on wht 

- 'G' Btk-blu on wht 

- 'H' Grn on wht 

- 'I' Orn on wht 

■ 'J' Brn-red-brn on wht 

- 'K' Red on wht 
“ 'L' Blu on wht 

- 'M' 

- 'N' 

- 'O' t-Brn-red-bIk on tan 



rBrn-blk-brn on tan 




*Added SN B220000 
** Added SN B230000 



Fig. 4-5A. Low Voltage Power Supply and 1 kHz Calibrator circuit board, SN above B190000. 



4-8 



CD 




Maintenance — Type 564B 




Fig. 4-5B. Low Voltage Power Supply and 1 kHz Calibrator circuit board, SN below B 190000. 



4-9 














Maintenance — Type 564B 



■A’ BIk-brh oh wht 



‘B’ BIk-vio on whf 



‘C’ BIk-blo on wht 

*P’ Orn on wht 

■EVRed on wht 

I ‘F’ Gry on wht 

I ‘G’ Blk-grn on wht 



‘AO’ Blk-gry on wht ? 
‘AM’ BIu on wht 



tBrn-red-brn on Wht i 



* AJ’ Bfk>red on wht - 
l‘Ar B!k”Orh on Wht t 



*AH’^ y>o on wht N 



‘AG’ Blk-grn on wht 

‘AF’ Red on wht^ 

‘AP Yel on wht 

: :0^^ ::wht 
:ii k-blu on Wht 

































hBrn-red-blk on tan 



‘K’ Bm~red"brn on wht 



*L’ Vio on wht 




vGrn on 

‘N’J 






Tr3^ 






‘O’ Orn-bik-bm oh wh 



‘P’ BIu on Wht 



*Q’ Brn on wht 



fYel on Wht 



fBrn-blk-brn on tan 



- *V’ Blk-red on w^ 



t035S-^ 









‘^A’ ;Grn on wht r 



»inMM fir 

^^C45 5 



Iwhife 

*X’^ 

‘Y’ Orn on wht 
‘Z’ Red On wht 



Note: D346; D347, D446, D447 
added to back of board 
$N 8240300 




4-10 




Maintenance — Type 564B 



Cathode-Ray Tube Replacement. The following pro- 
cedure outlines the removal and replacement of the cathode- 
ray tube. 

REMOVAL: 

1. Remove the bezel (held in place with four knurled nuts) 
and the graticule light shield. Also remove any filters that 
may be In front of the graticule. 

2. Disconnect the deflection-plate leads. Be careful not to 
bend the deflection-plate pins. 

3. Remove the CRT base socket. 

4. Loosen the three screws on the CRT clamp inside the 
CRT shield (base end). Do not remove the screws. (One of 
these screws is for the clamp; the other two permit positioning 
of the clamp). 

5. Pushing on the CRT base, slide the CRT forward. Pull 
the CRT out of the instrument from the front. Be sure that 
the CRT neck-pins clear the shield edge as the CRT is pushed 
out. 

WARNING 

High vacuum cathode ray tubes are dangerous 
to handle. To prevent personal injury from flying 
glass in case of tube breakage, wear a face mask 
or safety goggles, and gloves. 

Handle the CRT with extreme care. Do not strike or 
scratch it. Never subject it to more than moderate 
force or pressure when removing or installing. 

Always store spare CRT’s in original protective car- 
tons. Save cartons to dispose of used CRT’s. 

6. Remove the boot (shockmounting gasket) and graticule 
from the CRT faceplate. 

REPLACEMENT: 

1. Make sure the faceplate and graticule are clean, then 
place the graticule on the faceplate (with the etched grati- 
cule lines against the faceplate). Place the boot around 
the CRT faceplate and graticule so that the two tabs on the 
graticule extend through the two slots in the boot, and the 
graticule is held firmly against the faceplate. 

2. Check that the CRT base pins are straight (make a test 
installation of the CRT base socket onto the base pins out- 
side the instrument), then insert the CRT into the shield. Guide 
the CRT base into the clamp and slide the CRT toward the 
rear of the instrument. 



3. Tighten the clamp screw inside the CRT shield, leaving 
the two positioning screws loose. Recommended tightening 
torque: 4 to 7 inch-pounds. 

4. Align the CRT faceplate square with the front of the 
instrument by positioning the CRT base. Tighten the two posi- 
tioning screws. 

5. Replace the light shield, filter (if used), bezel and secur- 
ing nuts. 

6. Place the CRT base socket onto the CRT base pins. 

7. Replace the deflection-plate pin connectors. Correct 
location is indicated on the CRT shield. 

8. Replacing the CRT will necessitate instrument recalibra- 
tion. Refer to Calibration, Section 5. 

Scale Illumination Lamp Replacement. To replace the 
scale illumination lamps: 

1. Remove the CRT bezel (held in place with four knurled 
nuts) and the graticule light shield. Also remove any filters 
that may be in front of the graticule. 

2. Loosen the nut holding the adjustable lamp-socket 
bracket and slide the bracket forward through the front panel 
as far as possible. 

3. Remove the defective lamp by pulling straight out with 
the fingers. 

4. Insert the new lamp. Be sure it is pushed all the way 
into the socket. 

5. Adjust the lamp-socket bracket for proper protrusion 
through the front panel. It must not extend beyond the light 
shield. 

6. Replace the filters (if any) and bezel. 

Transistor Replacement. Transistors should not be re- 
placed unless they are actually defective. If removed from 
their sockets during routine maintenance, return them to 
their original sockets. Unnecessary replacement or switch- 
ing of components may affect the calibration of the instru- 
ment. When a transistor is replaced, check the operation of 
any part of the instrument which may be affected. 

Any replacement component should be of the original type 
or a direct replacement. Re-mount the components in the 
same manner as the original. Fig. 4-2 shows the lead confi- 
gurations of the transistors used in this instrument. 

Transistors which are mounted on the heat sink on the rear 
panel use a special thermal-joint compound to increase heat 
transfer. Replace compound when replacing these transistors. 



TABLE 4-5 



Fuse Ratings 



Circuit 

Number 


Rating 


Location 


Function 


FI 


3.2 A Slo-blow 


Line Voltage Selector assembly 


115-volt line 


F2 


2 A Slo-blow 


Line Voltage Selector assembly 


230-volt line 


F9 


0.15 A Fast-blow 


Low Voltage Power Supply cir- 
cuit board 


High Voltage 




*AA’ Brn on wm^ 




Maintenance — Type 564B 




4-13 




Maintenance — Type 564B 



WARNING 

If silicone grease is used as a thermal-joint com- 
pound, handle the silicone grease with care. Avoid 
getting silicon grease in the eyes. Wash hands 
thoroughly after use. 

Fuse Replacement. Table 4-5 gives the rating, location 
and function of the fuses used in this instrument. 

Rotary Switches. Individual wafers or mechanical parts 
of rotary switches are normally not replaceable. If a switch 
is defective, replace the entire assembly. Replacement 
switches can be ordered either wired or unwired; refer to 
the Parts List for the applicable part numbers. 

When replacing a switch, tag the switch terminals and leads 
with corresponding identification tags as a guide for install- 
ing the new switch. An alternate method is to draw a sketch 
of the switch layout and record the wire color at each termi- 
nal. When soldering to the new switch, be careful that the 
solder does not flow beyond the rivets on the switch termi- 
nals. Spring tension of the switch contact can be destroyed 
by excessive solder. 

Power Transformer Replacement. Be sure to replace only 
with a direct replacement Tektronix transformer. When re- 
moving the transformer, tag the leads with the corresponding 
terminal numbers to aid in connecting the new transformer. 
After the transformer is replaced, check the performance 
of the complete instrument using the Performance Check 
instructions outlined in Section 5, Calibration. 



High-Voltage Compartment. The components located in 
the high-voltage compartment can be reached for mainte- 
nance or replacement by using the following procedure: 



1. Remove the metal high-voltage shield by removing the 
two hexagonal nuts on the opposite side of the chassis. 

2. Remove the plastic cover (held in place with three 
screws). 

3. To remove the complete wiring assembly from the high- 
voltage compartment, first unsolder the two diodes connected 
between the board assembly and the high-voltage trans- 
former and then lift the board assembly out far enough to 
unsolder the leads connecting to the side of the assembly 
closest to the transformer. Unsolder other leads as necessary 
to allow the board assembly to be lifted free of the instru- 
ment. 

4. To remove the high-voltage transformer, unsolder the 
leads connecting to the pins on the top of the transformer. 

5. To replace the high-voltage compartment, reverse the 
order of removal. 

NOTE 

All solder joints in the high-voltage compartment 
should have smooth surfaces. Any protrusions may 
cause high-voltage arcing at high altitudes. 



Recalibration After Repair 

After any electrical component has been replaced, the 
calibration of that particular circuit should be checked, as 
well as the calibration of other closely related circuits. Since 
the low-voltage supply affects all circuits, calibration of the 
entire instrument should be checked if work has been done 
in the low-voltage power supply or if the power transformer 
has been replaced. The Performance Check instructions out- 
lined in Section 5 provide a quick and convenient means of 
checking the instrument operation. 



®l 



REV. MAY 1974 



4-15 




NOTES 





SECTION 5 

PERFORMANCE CHECK/CALIBRATION 



Change information, if any, affecting this section will be found at the 
rear of the manual. 



Introduction 

To assure instrument accuracy, check the calibration of the 
Type 564B every 500 hours of operation, or every six months 
if used infrequently. Before complete calibration, thoroughly 
clean and inspect this instrument as outlined in the Mainte- 
nance section. 

This section provides several features to aid in checking 
or calibrating the instrument. For example: 

Index. The Short-Form Procedure lists the step numbers 
and titles of the Complete Calibration Procedure and gives 
the page on which each step begins. Therefore, the Short- 
Form procedure can be used to locate a step in the complete 
procedure. 

Calibration Record. The Short-Form Procedure can be 
reproduced and used as a permanent record of instrument 
calibration. Spaces are provided to check off each step as 
it is completed and to record performance data. 

Abridged Calibration Procedure. The Short-Form Pro- 
cedure lists the adjustments necessary for each step and the 
applicable tolerance for correct calibration. The experienced 
technician who is familiar with the calibration of this instru- 
ment can use this procedure to facilitate checking or calibrat- 
ing. 

Performance Check. The Complete Calibration Procedure 
can be used as a front-panel check of the instrument’s per- 
formance by doing all portions except the ADJUST- part of 
a step. When used as a performance check procedure, the 
instrument is checked to the original performance standards 
without removing the covers or making internal adjustments. 
Screwdriver adjustments which are accessible without remov- 
ing the covers can be adjusted. Some steps are not applic- 
able to a performance check-out procedure. These have a 
note which gives the next applicable step. 

Complete Calibration. Completion of each step in the 
Complete Calibration Procedure checks this instrument to the 
original performance standards and gives the procedure to 
return each adjustment to its optimum setting. Limits, toler- 
ances and waveforms in this procedure are given as cali- 
bration guides and are not instrument specifications. Where 
possible, instrument performance is checked before an ad- 
justment is made. For best overall instrument performance 
make each adjustment to the exact setting even if the CHECK 
is within the allowable tolerance. 

Partial Calibration. To check or adjust only part of this 
instrument, start with the nearest equipment required pic- 
ture preceding the desired portion. To prevent recalibration 
of other parts of the instrument when performing a partial 



calibration, readjust only if the tolerance given in the CHECK- 
part of the step is not met. If an adjustment is made, any 
steps listed in the INTERACTION- part of the step should 
also be checked for correct tolerance. 



TEST EQUIPMENT REQUIRED 

General 

The following test equipment and accessories, or its equiv- 
alent, is required for complete calibration of the Type 564B. 
Specifications given are the minimum necessary for accurate 
calibration. Therefore, some of the recommended equipment 
may have specifications which exceed those given. All test 
equipment is assumed to be correctly calibrated and operating 
within the given specifications. If equipment is substituted, it 
must meet or exceed the specifications of the recommended 
equipment. 

For the quickest and most accurate calibration, special 
Tektronix calibration fixtures are used where necessary. These 
special calibration fixtures are available from Tektronix, Inc. 
Order by part number through your local Tektronix Field 
Office or representative. 

1. Vertical amplifier. Dual trace; bandwidth, DC to at 
least lOMHz; deflection factor, 0.01 volts/division to 5 volts/ 
division; chopped and alternate modes. Tektronix Type 3A6 
Dual-Trace Amplifier recommended. 

2. Time-base unit. Normal and delayed sweeps; sweep 
rates, one millisecond/division to one microsecond/division; 
5X magnifier; single-sweep operation. Tektronix Type 3B3 
Time-Base Unit recommended. 

3. CRT deflection capacitance normalizer. (Normally re- 
quired only if new cathode-ray tube has been installed or 
if deflection-plate compensation has been inadvertently mis- 
adjusted. Alternate method of adjustment is also given.) Tek- 
tronix Calibration Fixture, 067-0500-00, recommended. (For 
alternate method, Tektronix Type 130 L-C Meter recom- 
mended.) 

4. Variable autotransformer. Must be capable of supply- 
ing at least 196 watts over a voltage range of 90 to 136 volts 
(180 to 272 volts for 230-volt nominal line). If autotransformer 
does not have an AC (RMS) voltmeter to indicate output volt- 
age, monitor output with an AC (RMS) voltmeter. For ex- 
ample, General Radio W10MT3W Metered Variac Auto- 
transformer. 

5. DC volt-ohmmeter. Minimum sensitivity, 20,000 ohm/ 
volt. For example, Triplett 630. 




Performance Check/Calibration — Type 564B 



6. Precision DC volfmefer. Accuracy, within zhO.05%; 
meter resolution, 50 microvolts; range, zero to 3.5 kilovolts. 
For example. Fluke Model 825A Differential DC Voltmeter 
(with Fluke Model 80E-5 Voltage Divider to measure the 
high-voltage supply). 

7. Test oscilloscope, with 1 X probe. (Optional, for check- 
ing power supply ripple.) Bandwidth, DC to 300 kilohertz; 
minimum deflection factor, five millivolts/division; accuracy, 
within 3%. Tektronix Type 561 B with 2A63 and 2B67 plug-in 
units, and P6028 Probe recommended. 

8. Square-wave generator. Frequency, 100 kilohertz; out- 
put amplitude, three volts to ten volts. Tektronix Type 106 
Square-Wave Generator recommended. 

9. Time-mark generator. Marker outputs, ten microseconds 
to one millisecond; marker accuracy, within 0.1%. Tektronix 
Type 184 Time-Mark Generator recommended. 

10. Cable. Impedance, 50 ohms; electrical length, five 
nanoseconds; connectors, GR874. Tektronix Part No. 017- 
0502-00. 

11. Cable, coaxial. Impedance, 50 ohms; length, 42 inches; 
connectors, BNC. Tektronix Part No. 012-0057-00. 



I I 9. Check External CRT Cathode (Page 5-8) 

Intensity (Z-Axis) modulation with 3 volts input. 

Q 10. Adjust Trace Alignment (Page 5-9) 

Trace parallel to horizontal graticule lines. 

I I 11. Adjust CRT Geometry (Page 5-9) 

Best overall geometry 

I I 12. Check CRT Vertical Deflection Factor (Page 5-9) 
18.5 to 20.5 V/cm 

I I 13. Check CRT Vertical Electrical Center (Page 5-10) 



Trace within 0.5 major division of graticule hori- 
zontal centerline. 

I I 14. Check CRT Horizontal Deflection Factor (Page 5-10) 
17.5 to 19.25 V/cm 

Q 15. Check CRT Horizontal Deflection Factor (Page 5-10) 
Trace within 0.8 major division of graticule vertical 
centerline. 

O 16. Check Delaying Sweep Intensification (Page 5-11) 
Intensified portion on trace (with delayed sweep 
time-base unit). 



12. Adapter, GR to BNC male. Tektronix Part No. 017- 
0064-00. 

13. Adapter, BNC to banana terminal. For example, Po- 
mona #1269 (Tektronix Part No. 103-0090-00). 

14. T connector, BNC. Tektronix Part No. 103-0030-00. 

15. Termination. Impedance, 50 ohms; accuracy dz3%; 
connectors, BNC. Tektronix Part No. 011-0049-00. 

16. Current-measuring probe with passive termination. Sen- 
sitivity, two milliamperes/millivolt; accuracy, within 3%. Tek- 
tronix P6019 Current Probe with 011-0078-00 passive termina- 
tion recommended. 

SHORT-FORM PROCEDURE 

Type 564B, Serial No. 

Calibration Date 

Calibrated By 

Q 1. -100-Volt Power Supply 
— 100 volts, zbO.5 volts 

□ 2. Check Low-Voltage Power Supplies 

□ 3. Check Low-Voltage Power Supply 

Regulation and Ripple (Optional Check) 

□ 4. Adjust High Voltage 

— 3300 volts, ±99 volts 

Q 5. Check High Voltage Regulation 
(Optional Check) 

Q 6. Adjust CRT Grid Bias 

Coarse intensity adjustment. 

Q 7. Check Alternate Trace 

Trace alternates at all sweep rates. 

|~| 8. Check Dual-Trace Blanking 

Switching transient (vertical lines) blanked between 
chopped segments. 



(Page 5-5) 

(Page 5-5) 
(Page 5-5) 

(Page 5-5) 

(Page 5-5) 

(Page 5-6) 

(Page 5-7) 

(Page 5-8) 



Q 17A. Adjust Vertical and Horizontal (Page 5-12) 

Deflection-Plate Compensation 
Optimum square corner (or 14.3 picofarads effec- 
tive capacitance). 

Q 17B. Alternate Method of Adjusting (Page 5-13) 

Deflection-Plate Compensation 
Optimum square corner (or 14.3 picofarads effec- 
tive capacitance). 

I I 18. Check and Adjust Calibrator Amplitude (Page 5-16) 
+40 volts, ±0.6 volt 

O 19. Check and Adjust Calibrator Repetition (Page 5-17) 
Rate 

One kilohertz, ±10 hertz 



□ 20. Check Calibrator Duty Factor (Page 5-17) 

48% to 52% 



Q 21. Check Calibrator Risetime (Page 5-18) 

<2.5 microsecond at 40 volts; <1 microsecond at 
all other voltages. 

Q 22. Check Current Through Probe Loop (Page 5-19) 
Ten miiliamperes 



I I 23. Adjust Flood Gun Bias (Page 5-20) 

Proper flood-gun coverage of storage target area. 



n 24. Adjust Collimation (Page 5-21) 

Optimum uniform brightness over the storage target 
area. 



Q 25. Check Operating Level Range (Page 5-21) 

From < +125 volts to > +275 volts. 

Q 26. Adjust Operating Level (Page 5-21) 

Optimum stored display 

Q 27. Adjust Non-Store Level (Page 5-23) 

Screen erases promptly and completely when chang- 
ing from Store to Non-Store Mode. 

n 28. Check Writing Speed (Page 5-23) 

Writing speed is >25cm/ms for T5641-200 storage 
tube; >100cm/ms for T5641-201 storage tube. 



5-2 







Performance Check/Calibration — Type 564B 



□ 29. Adjust Enhance Amplitude (Page 5-24) 

Maximum writing speed without background deterior- 
ation. 

n 30. Check Enhanced Writing Speed (Page 5-24) 

Enhanced writing speed is >250cm/ms for T5641- 
200 storage tube; >500 cm/ ms for T5641-201 storage 
tube. 

Q 31. Check Locate Operation (Page 5-25) 

Correct dot displacement 

Q 32. Check Integrate Function (Page 5-25) 

COMPLETE CALIBRATION PROCEDURE 



General 

The following procedure allows the Type 564B to be cali- 
brated with the least interaction of adjustments and recon- 
nection of equipment. An equipment required picture is 
shown for each group of checks and adjustments to identify 
the test equipment used. Following this picture is a complete 
list of front-panel control settings for the Type 564B. Controls 
which have been changed for the new group of checks and 
adjustments are printed in bold type. Each step following the 
test equipment picture continues from the equipment setup 
and control settings used in the preceding step(s) unless 
noted otherwise. External controls or adjustments of the 
Type 564B referred to in this procedure are capitalized (e.g., 
INTENSITY). Internal adjustment names are initial capitalized 
only (e.g., High Voltage). 

All waveforms shown in this procedure were taken with a 
Tektronix Oscilloscope Camera System and Projected Grati- 
cule. The following procedure uses the equipment listed under 
Test Equipment Required. If equipment is substituted, con- 
trol settings or equipment setup may need to be altered to 
meet the requirements of the equipment used. Detailed oper- 



ating instructions for the test equipment are not given in this 
procedure. If in doubt as to the correct operation of any of 
the test equipment, refer to the instruction manual for that 
unit. 

NOTE 

This instrument should be calibrated at an ambient 
temperature of +25° C, ±5° C. The performance 
of this instrument can be checked at any tempera- 
ture within the 0° C to +50° C range. If the am- 
bient temperature is outside the given range, see 
Section 1 for the applicable tolerances. 

Preliminary Procedure for Performance Check 
Only 

1. Connect the Type 564B to a power source which meets 
the voltage and frequency requirements of this instrument. 

2. Set the POWER switch to ON. Allow at least 5 minutes 
warmup before proceeding. 

3. Begin the Performance Check with step 7. 

Preliminary Procedure for Complete Calibration 

1. Remove the side and bottom covers from the Type 564B. 

2. Set the Line Selector to 115 V and the Range Selector 
to Medium. 

3. Connect the autotransformer to a suitable power source. 

4. Connect the Type 564B to the autotransformer output. 

5. Set the autotransformer output voltage to 115 volts. 

6. Set the POWER switch to ON. Allow at least 5 minutes 
warmup before proceeding. 



NOTES 




Performance Check/ Calibration — Type 564B 




Fig. 5-1. Test equipment required for steps 1 through 6. 



POWER SUPPLIES 



Time-Base Unit 



Control Settings 



Type 564B 



INTENSITY 

FOCUS 

ASTIGMATISM 
SCALE ILLUM 
CALIBRATOR 

CRT CATHODE SELECTOR 
(rear panel) 

STORE (both) 

ENHANCE (both) 



Counterclockwise 
Midrange 
Midrange 
As desired 



NORM 



Off (out) 
Off (out) 



Vertical Amplifier Unit 

Ch 1 Input Coupling AC 

Ch 1 Volts/Div 5 

Mode Ch 1 

Position Centered 



Time/Div 

Normal-Single Sweep 

Slope 

Coupling 

Source 



Single Sweep 

+ 

Auto 

Int 

Clockwise 



Test Oscilloscope (Optional — To check ripple) 



Intensity 

Focus and Astigmatism 
Time Base 
Mode 
Time/Div 

Normal-Single Sweep 

Level 

Slope 

Coupling 



Nominal brightness 
Well-defined trace 



5-4 



®i 




Performance Check/ Calibration — Type 564B 



Source Int 

Vertical Amplifier 

Mode Ch 1 

Volts/Div 0.01 

Input Coupling AC 



1. Adjust -100-Volt Power Supply 

For Performance Check only, proceed to step 7. 

a. Test equipment required for steps 1 through 6 is shown 
in Fig. 5-1. The illustrated equipment is keyed to that listed 
under Test Equipment Required. 

b. Connect the precision DC voltmeter between the 
— 100-volt test point and ground (see Fig. 5-2). 

c. ADJUST — R23, —100 Volts (Fig. 5-2) for exactly —100 
volts. 

d. INTERACTION — Operation of all circuits within the 
Type 564B is affected by the — 100-volt supply. 

2. Check Low-Voltage Power Supplies 

a. Connect the precision DC voltmeter between each low- 
voltage test point and chassis ground. See Fig. 5-2 for test 
point locations. 

b. CHECK — Each supply is within the tolerance listed in 
Table 5-1. 



TABLE 5-1 



Supply 


Tolerance 


Maximum Line 
Frequency 
Ripple 


+300 V 


+295.5 V to +304.5 V 


5 mV 


+ 125V 


+123.1 V to +1 26.9 V 


3 mV 


—12.2 V 


-12.05 V to -12.35 V 


2 mV 


-lOOV 


—99.5 V to —100.5 V 


2 mV 



3. Check Low-Voltage Power Supply Regulation 
and Ripple (Optional Check) 

a. To check regulation^ connect the DC voltmeter be- 
tween each low-voltage supply test point and chassis ground. 
To check ripple, connect the 1 X probe from the test oscil- 
loscope Ch 1 input connector to each test point. 

b. Set the autotransformer output to 104 VAC. 

c. CHECK — Each supply output and ripple amplitude must 
be within the tolerance listed in Table 5-1. 

NOTE 

Power supply voltages and ripple tolerances in this 
step are guides to correct instrument operation; 
not instrument performance requirements. Actual 




Fig. 5-2. Location of power supply test points and R23, — 100 
Volts adjustment. 

values may exceed listed tolerances with no loss 
in measurement accuracy if the instrument meets 
the performance requirements in Section 1 as tested 
in this procedure, 

d. Set the autotransformer output to 125 VAC. 

e. CHECK — Each supply output and ripple amplitude 
must be within the tolerance listed in Table 5-1. 

f. Return the autotransformer output to 115 VAC and dis- 
connect the precision DC voltmeter and test oscilloscope. 



4. Adjust High Voltage 

a. Connect the DC voltmeter between ground and the 
-3300-volt test point (Fig. 5-3A). 

b. CHECK — Meter reading must be —3300 volts, ±99 V. 

c. ADJUST — R206, High Voltage (Fig. 5-3B), for a meter 
reading of exactly —3300 volts. 



5. Check High Voltage Regulation (Optional 
Check) 

a. With the DC voltmeter connected between ground and 
the -3300-volt test point and the High Voltage within the 
limits stated in step 4b, adjust the autotransformer for an 
output of 104 VAC and then 126 VAC to check the regula- 
tion of the high-voltage supply. 



@3 



5-5 








Performance Check/ Calibration — Type 564B 




Fig. 5-3. Location of (A) — 3300-volt test point, and (B) R206, 

High Voltage ad'iustment. 

b. CHECK — Meter reading should not vary more than 
dzl5 volts when checking regulation. 

c. Remove the DC voltmeter and return the autotrans- 
former output to 1 15 VAC. 

6. Adjust CRT Grid Bias 

a. Set the time-base Normal-Single Sweep switch to Nor- 
mal and rotate the INTENSITY control clockwise until a trace 
can be seen. 




Fig. 5-4. Location of R269, CRT Grid Bias. 

b. Position the start of the sweep to the left edge of the 
graticule and adjust the FOCUS control for a well-defined 
trace. 

c. Rotate the INTENSITY control fully counterclockwise. 

d. Set the time-base Normal-Single Sweep switch to Single 
Sweep and rotate R269, CRT Grid Bias (Fig. 5-4), counter- 
clockwise. 

e. Press the LOCATE button and hold it in while performing 
the next step. 

f. ADJUST — R269, CRT Grid Bias, clockwise until a low- 
intensity spot appears to the left of the sweep start in the 
locate zone. (It is best to view the CRT trace under low 
ambient light conditions or by using a viewing hood.) 

g. With the LOCATE button still depressed, rotate the IN- 
TENSITY control throughout its range and note that it has 
no effect on the spot brilliance. 

h. Rotate the INTENSITY control fully counterclockwise and 
release the LOCATE button. 

NOTE 

The Type 564B may now be connected directly to 
the power source for the remainder of the pro- 
cedure, provided the Line Selector and Range Se- 
lector switches are set to the proper positions for 
the source line voltage. 



5-6 



@2 





Performance Check/ Calibration — Type 564B 




Fig. 5-5. Test equipment required for steps 7 through 16. 



CRT and DEFLECTION CIRCUITS 



Control Settings 



Type 564B 



INTENSITY 

FOCUS 

ASTIGMATISM 
SCALE ILLUM 
CALIBRATOR 

CRT CATHODE SELECTOR 
(rear panel) 

STORE (both) 

ENHANCE (both) 



Counterclockwise 

Midrange 

Midrange 
As desired 
OFF 
NORM 

Off (out) 

Off (out) 



Vertical Amplifier Unit 



Input Coupling 
(Ch 1 & 2) 

Volts/ Div (Ch 1 & 2) 
Mode 

Position (Ch 1 & 2) 
Trigger 



AC 

5 

Alter 

Centered 

Composite (pushed in) 



Time-Base Unit 



Mode 


Norm 


Time/Div 


1 ms 


Normal-Single Sweep 


Norm 


Slope 


+ 


Coupling 


Auto 


Source 


Int 


Level 


Clockwise 



7. Check Alternate Trace 

a. Test equipment required tor steps 7 through 16 is 
shown in Fig. 5-5. The illustrated equipment is keyed to 
that listed under Test Equipment Required. If the vertical 
amplifier unit has only single-trace capabilities, use the sub- 
stitute procedure following step 7. 

b. Set the INTENSITY control tor normal display bright- 
ness. If necessary, adjust the vertical Position controls so that 
two traces are displayed on the screen. Adjust FOCUS and 
ASTIGMATISM for well-defined traces. 

c. CHECK — Alternating trace at all sweep rates (all set- 
tings of the Time/Div switch). 










Performance Check/ Calibration — Type 564B 























































«_4 




















(A) 










































L 
























































































































































































■! i' h 






























































(B) 







Fig. 5-6. Typical CRT displays showing correct chopped blanking. 
(A) Chopped transients visible with CRT CATHODE SELECTOR switch 
set to NORM (Time/Div, 2 /xs) ; (B) transients blanked with CRT 

CATHODE SLECTOR switch set to CHOPPED BLANKING. 



Mode (amplifier) Chop 

Time/Div (time-base) 2 /xs 

b. Position the two traces about 2 major divisions apart 
on the CRT screen and trigger the chopped waveform (see 
Fig. 5-6A) using the Triggering Level control. 

c. Adjust the INTENSITY control so the vertical segments 
of the chopped waveform are barely visible. Adjust FOCUS 
and ASTIGMATISM as needed. 

d. Move the CRT CATHODE SELECTOR switch to 
CHOPPED BLANKING. 

e. CHECK — The vertical segments should now be blanked 
and the horizontal segments should be slightly intensified. 
(See Fig. 5-6B.) 

f. Return the CRT CATHODE SELECTOR switch to NORM. 

If a single-trace amplifier plug-in unit is used: 

a. (With power off and amplifier plug-in unit removed) 
connect the ohmmeter between pin 24 of the interconnect- 
ing socket in the vertical plug-in compartment and the wire 
strap that diagonally connects the inboard terminals of 
switch SW255 (CRT CATHODE SELECTOR). 

b. CHECK — Meter reading is infinity (open circuit) with 
the CRT CATHODE SELECTOR switch in the NORM and 
EXT INPUT positions. 

c. Set the CRT CATHODE SELECTOR to CHOPPED BLANK- 
ING. 

d. CHECK — Meter reading is zero ohms (closed circuit). 
Together with the following external-cathode intensity mod- 
ulation check, this continuity check tests the chopped blank- 
ing function of the Type 564B. 

e. Disconnect the ohmmeter and set the CRT CATHODE 
SELECTOR to NORM. 

f. Re-insert the plug-in units into the Type 564B. 

g. Set the POWER switch to ON and allow five minutes 
for the instrument to warm up. 



If a single-trace amplifier plug-in unit is used: 

a. Turn off the Type 564B and remove both plug-in units 
temporarily. 

b. Make an ohmmeter continuity check between pin 4 
of the interconnecting socket in the vertical plug-in com- 
partment and pin 3 of the interconnecting socket in the 
horizontal plug-in compartment. Also check for infinite re- 
sistance between pins 3 and 4 of the vertical plug-in unit 
connector. Since the Type 564B interconnects the two plug- 
in units in the Alternate mode, the continuity check also 
checks the alternate-trace function. 

c. Perform the substitute procedure for single-trace units 
given in step 8 before re-inserting the plug-in units and ap- 
plying power to the instrument. 



8. Check Dual-Trace Blanking 

a. Reset the following controls: 



9. Check External CRT Cathode 

a. Change the following control settings: 

Mode (Vertical Amplifier) Ch 1 

Time/Div (Time-Base) 5 /xs 

b. Connect the square-wave generator high amplitude 
output to the amplifier unit Ch 1 input connector through a 
5-nanosecond GR cable and BNC T connector (use a GR 
to BNC adapter to connect the GR cable to the T connector). 
Connect a coaxial cable from the T connector to the EXT 
INPUT connector at the rear of the Type 564B. 

c. Set the square-wave generator for a two-division CRT 
display (10 volts peak to peak) at 100 kilohertz. Adjust the 
Triggering Level control for a stable display. 

d. Decrease the intensity until the waveform is barely 
visible. 

e. Set the CRT CATHODE SELECTOR to EXT INPUT. 



5-8 




Performance Check/ Calibration — Type 564B 



f. CHECK — The top portions of the waveform should be 
blanked completely and the bottom portions should be in- 
tensified (see Fig. 5-7A). 

g. Set the CRT CATHODE SELECTOR to NORM and the 
amplifier Volts/Div switch to 1. 

h. Adjust the square-wave generator amplitude to pro- 
duce a three-division CRT display (3 volts peak to peak). Use 
an attenuator if necessary. 

i. Move the signal lead from the amplifier Ch 1 input to 
the time-base Ext Trig input (use a BNC to banana terminal 
adapter). Do not remove the signal from the EXT INPUT 
connector. 

j. Set the time-base Source switch to Ext and the CRT 
CATHODE SELECTOR to EXT INPUT. Trigger the display. 

k. CHECK — Intensity modulation should be visible with 
the 3-volt signal applied (see Fig. 5-7B). 

l. Remove the square-wave generator signal. 



10. Adjust Trace Alignment 

a. Change the following control settings: 



INTENSITY 

CRT CATHODE SELECTOR 
Time/Div (time-base) 

Triggering Level 
(time-base) 

Triggering Source 
(time-base) 



Normal display brightness 
NORM 
1 ms 

Clockwise 

Int 



b. Position the trace to the horizontal centerline. 



c. CHECK — Trace should be parallel to the horizontal 
graticule lines. If necessary, adjust the TRACE ALIGNMENT 
adjustment (front panel) to align the trace to the horizontal 
graticule line. 









(A) 






































































































L_ 








































































































■ 


























































































































































(B) 





Fig. 5-7. Typical CRT displays when checking intensity modulation; 
(A) 10-volt signal applied to both vertical amplifier and CRT cat- 
hode, (B) 3-volt signal applied only to CRT cathode. 



1 1 . Adjust CRT Geometry 

a. Connect the time-mark generator marker output to the 
amplifier Ch 1 input connector with a coaxial cable. 

b. Set the time-mark generator for 1 -millisecond markers. 

c. Trigger the display with the Triggering Level control 
and position the display baseline to a point below the bottom 
edge of the graticule. 

d. Set the Volts/Div switch so that the time markers over- 
scan the graticule area. 

e. ADJUST — R475, Geometry (Fig. 5-8B), for minimum 
bowing of markers at the left and right edges of the grati- 
cule. 

f. CHECK — Deviation from straight line should not exceed 
0.1 division (see Fig. 5-8A). 

g. Remove the time-mark signal and position the trace to 
the bottom graticule line. 

h. CHECK — Deviation from straight line should not exceed 
0.1 division. 



i. Position the trace to the top graticule line. 

j. CHECK — Deviation from straight line should not exceed 
0.1 division. For Performance Check only, proceed to step 16. 



12. Check CRT VerHcal Deflection Factor 

This step is not applicable to Performance Check. For 
Performance Check only, proceed to step 16. 

a. Connect the DC voltmeter (set to 300-volt scale) between 
the two vertical deflection-plate neck pins (BLUE and BROWN 
leads; see Fig. 5-9). Do not short to the CRT shield. 

b. Position the trace to the top graticule line. 

c. Note and record the meter reading. 

d. Remove the meter leads and position the trace to the 
bottom graticule line. 

e. Reconnect the DC voltmeter between the two vertical 
deflection-plate neck pins, opposite in polarity to the con- 
nection in step a. 




Performance Check/Calibration — Type 564B 




Fig. 5-8. (A) Idealized waveforms showing good geometry with examples of poor geometry; (B) location of R475, Geometry. 



f. Again nofe and record the meter reading. 

g. Determine the voltage swing over the eight major divi- 
sions by adding the meter reading noted in step c to the 
meter reading noted in step t. 

h. CHECK — Voltage swing over eight major divisions is 
between 148 and 164 volts. This indicates a vertical deflec- 
tion factor of 18.5 to 20.5 volts per division. 

13. Check CRT Vertical Electrical Center 

This step is not applicable to Performance Check. 

a. V/ith the DC voltmeter connected between the vertical 
deflection-plate neck pins, position the trace towards grati- 
cule center while observing the meter. Continue to position 
the trace until the meter reading is zero volts. This is the 
CRT vertical electrical center. 

b. CHECK — Trace must be within 0.5 major division of 
the graticule centerline. 

c. Disconnect the DC voltmeter. 

14. Check CRT Horizontal Deflection Factor 

This step is not applicable to Performance Check 

a. Rotate the INTENSITY control fully counterclockwise. 



b. Remove the two plug-in units, then insert the time-base 
plug-in unit into the vertical (left) compartment and the ampli- 
fier unit into the horizontal (right) compartment. 

c. Allow about V 2 minute warmup, then increase the 
intensity to normal brightness and note that the trace is now 
vertical. 

d. Connect the DC voltmeter (set to 300-volt scale) between 
the two horizontal deflection-plate neck pins (GREEN and 
RED leads; see Fig. 5-9). 

e. Position the trace to the left edge of the graticule. 

f. Note and record the meter reading. 

g. Remove the meter leads and position the trace to the 
right edge of the graticule. 

h. Reconnect the DC voltmeter between the horizontal 
deflection-plate neck pins, opposite in polarity to the con- 
nection in step d. 

i. Again note and record the meter reading. 

j. Determine the voltage swing over the ten major divi- 
sions by adding the meter reading noted in step f to the 
meter reading noted in step i. 

k. CHECK — Voltage swing over ten major divisions is 
between 175 and 192.5 volts. This indicates a horizontal 
deflection factor of 17.5 to 19.25 volts per division. 





Performance Check/ Calibration — Type 564B 




Fig. 5-9. Location of vertical and horizontal deflection-plate neck 
pins. 




Fig. 5-10. Typical CRT display showing correct intensifler circuit 
operation. 



e. Remove the plug-in units, then re-insert the amplifier 
unit into the vertical (left) compartment and the time-base 
unit into the horizontal (right) compartment. Allov/ about V 2 
minute warmup. 



15. Check CRT Horizontal Electrical Center 

This step is not applicable to Performance Check. 

a. With the DC voltmeter connected between the hori- 
zontal deflection-plate neck pins, position the trace towards 
graticule center while observing the meter. Continue to posi- 
tion the trace until the meter reading is zero volts. This is the 
CRT horizontal electrical center. 

b. CHECK — Trace must be within 0.8 major division of the 
graticule vertical centerline. 

c. Disconnect the DC voltmeter. 

d. Rotate the INTENSITY control fully counterclockwise. 



16. Check Delaying Sweep Intensification 

a. Set the time-base Delayed Sweep Time/Div switch to 
0.1 ms and the Delay Time dial to 1.00. Position the display 
as needed. 

b. Switch the time-base Mode switch to Intensified (not 
Trig Intensified). 

c. CHECK — It should be possible to adjust the INTENSITY 
control so that only the intensified portion of the delaying 
(normal) sweep is visible on the CRT screen. See Fig. 5-10. 

For Performance Check only, proceed to step 18. 



NOTES 





Performance Check/ Calibration — Type 564B 



(3) CRT deflection 
capacitance normolizer 




amplifier 



Fig. 5-11. Test equipment required for step 17. 



DEFLECTION-PLATE 


COMPENSATION 


Control settings 


Type 564B 


INTENSITY 


Counterclockwise 


FOCUS 


Well-defined trace 


ASTIGMATISM 


Well-defined trace 


SCALE ILLUM 


As desired 


CALIBRATOR 


OFF 


CRT CATHODE SELECTOR 


NORM 


(rear panel) 


STORE (both) 


Off (out) 


ENHANCE (both) 


Off (out) 


Vertical Amplifier Unit 


Input Coupling 


AC 


(Ch 1 & 2) 


Volts/Div (Ch 1 & 2) 


5 


Mode 


Ch 1 


Position 


Centered 



Time-Base Unit 



Mode 


Norm 


Time/Div 


0.1 ms 


Normal-Single Sweep 


Norm 


Slope 


— 


Coupling 


Auto 


Source 


Int 


Level 


Clockwise 



17A. Adjust Vertical and Horizontal Deflection- 
Plate Compensation 

Omit this step unless the CRT has been replaced. 

a. Test equipment required for step 17 is shown in Fig. 
5-11. The illustrated equipment is keyed to that listed under 
Test Equipment Required. 

b. Remove the vertical amplifier plug-in unit and insert 
the CRT Deflection Capacitance Normalizer into the left 
plug-in compartment. 



5-12 







Performance Check/ Calibration — Type 564B 




Fig. 5-12. (A) Typical CRT display showing correct vertical compensation adjustment; (B) and (C) incorrect adjustment; (D) location of Cl 09 
(left side). 



c. Connect a coaxial cable from the CAL OUT connector 
to the Capacitance Normalizer input connector. 

d. Set the CALIBRATOR switch to 40 V. 



1 7B. Alternate Method of Adjusting Deflection- 
Plate Compensation 

NOTE 



e. Increase the intensity to normal display brightness 
and adjust the Triggering Level control for a stable display. 

f. Turn the 5X Magnifier on and position the leading 
edge of the square wave as shown in Fig. 5-1 2A. 

g. ADJUST — Cl 09 (Fig. 5-1 2D) for optimum square corner. 

h. Rotate the INTENSITY control counterclockwise and 
interchange the Capacitance Normalizer and time-base unit. 
Readjust the INTENSITY, FOCUS and time-base triggering 
controls for a stable well-focused display. 

i. ADJUST — C102 (Fig. 5-1 3B) for optimum square corner. 
See Fig. 5-1 3A. 

j. Turn the 5X Magnifier off and rotate the INTENSITY 
control counterclockwise. 

k. Remove the Capacitance Normalizer. Replace the am- 
plifier unit in the left compartment and the time-base unit in 
the right compartment. 



The following method con be used to adjust the 
deflection-plate compensation if a Capacitance 
Normalizer is not available. 

The effective deflection-plate capacitance of the CRT is 
the capacitance seen by the plug-in unit when the deflection 
plates are driven push-pull. Therefore, it cannot be meas- 
ured directly with a capacitance meter. However, the individ- 
ual circuit capacitances which make up the effective deflec- 
tion-plate capacitance can be measured. These individual 
circuit capacitances are shown schematically in Fig. 5-14. Cl 
and C2 represent the capacitance from each deflection plate 
to ground. C3 represents the variable capacitance between 
the deflection plates. The variable capacitor is made up of 
the circuit capacitance plus the capacitor added tor adjust- 
ment. 



The effective deflection-plate capacitance, Ceff, can be 
expressed in terms of Cl, C2 and C3 as follows; 



Cl + C2 



+ 2 (C3) 



®l 



5-13 






Performance Check/ Calibration — Type 564B 




Fig. 5-13. (A) Typical CRT display showing correct adjustment of horizontal compensation; (B) location of C102 (right side). 



Setting Cgff equal to 14.3 picofarads (value set at factory), 
the value of the variable capacitor can be calculated. 

^ Cl + C2 
C3 ~ 7.15 pF — 



a. Disconnect the power cord and isolate the Type 564B 
from ground. 



b. Remove both plug-in units. 

c. Connect the capitance meter guard voltage to pin 21 
of the vertical (left) plug-in compartment and measure the ca- 
pacitance between pin 17 and the oscilloscope chassis. This 
is Cl. 



NOTES 





Performance Check/ Calibration — Type 564B 




Fig. 5-14. Schematic representation of the effective CRT deflection- 
plate capacitance. 



d. Connect the capacitance meter guard voltage to pin 17 
and measure the capacitance between pin 21 and the oscil- 
loscope chassis. This is C2. 

e. Substitute the measured capacitance values into the 
equation and solve for C3. 

t. Connect the guard voltage to the oscilloscope chassis 
and measure the capacitance between pins 17 and 21. 

g. Adjust Cl 09 until the measured capacitance equals the 
value calculated for C3 in step e. 

h. Repeat steps c through g for the horizontal (right) plug- 
in compartment. Adjust Cl 02 for the calculated value of 
C3. 

i. Remove the capacitance meter. 

j. Replace the plug-in units removed in step b and re- 
apply power to the instrument. Allow about five minutes 
warmup before continuing. 



NOTES 




Performance Check/ Calibration — Type 564B 




Fig. 5-15. Test equipment required for steps 18 through 22. 



1 kHz CALIBRATOR 
Control Settings 



Type 564B 



INTENSITY 


Normal brightness 


FOCUS 


Well-defined trace 


ASTIGMATISM 


Well-defined trace 


SCALE ILLUM 


As desired 


CALIBRATOR 


10 mA DC (40 V 


CRT CATHODE SELECTOR 


NORM 


(rear panel) 


STORE (both) 


Off (out) 


ENHANCE (both) 


Off (out) 


Vertical Amplifier 


Input Coupling 


DC 


(Ch 1 & 2) 


Volts/Div (Ch 1) 


2 


Volts/ Div (Ch 2) 


.5 


Mode 


Alter 


Position (both) 


Centered 



Time-Base 



Mode 


Norm 


Time/ Div 


1 ms 


Normal-Single Sweep 


Norm 


Slope 


+ 


Coupling 


Auto 


Source 


Int 


level 


Clockwise 



18. Check and Adjust Calibrator Amplitude 

a. Test equipment required for steps 18 through 22 is 
shown in Fig. 5-15. The illustrated equipment is keyed to 
that listed under Test Equipment Required. 

b. Connect the differential voltmeter between ground and 
CAL OUT connector. 

For Performance Check only: 

CHECK — Meter reading is +40 volts, zbO.6 V. Proceed to 
step 19. 

c. ADJUST — R166, Amplitude (Fig. 5-16) for a meter read- 
ing of exactly +40 volts. 






Performance Check/ Calibration — Type 564B 




Fig. 5-16. Location of Calibrator controls. 

d. Remove Q159 (Fig. 5-16) and check the remaining cali- 
brator voltages as listed in Table 5-2. Connect a 50-ohm 
termination to the CAL OUT connector when checking the 
0.2 V, 20 mV and 2 mV positions of the CALIBRATOR switch. 



TABLE 5-2 



Calibrator 


Meter Reading 


40 V 


+40 V, ±0.6 V 


4V 


+4V, ±0.06 V 


0.4 V 


+0.4 V, ±6 mV 


40 mV 


+40 mV, ±0.6 mV 


4 mV 


+4 mV, ±0.06 mV 



Into 50 n (Tolerance within 3%) 



0.2 V 


+0.2 V, ±4.5% 


20 mV 


+20 mV, ±4.5% 


2 mV 


+2 mV, ±4.5% 



e. Set the CALIBRATOR switch to OFF. 

f. Replace 0159 and remove the Differential Voltmeter. 



19. Check and Adjust Calibrator Repetition 
Rate 

a. Connect the CAL OUT connector to the Ch 1 input con- 
nector with a coaxial cable. 

b. Set the CALIBRATOR to 4V. 

c. Connect the time-mark generator marker output con- 
nector to the Ch 2 input connector with a coaxial cable. 

d. Set the time-mark generator for one-millisecpnd markers. 

e. Position the display so that the square-wave calibrator 
signal is superimposed on the time-mark signal. Adjust the 
Triggering Level control for a stable display. 

f. Adjust the time-base Sweep Cal (front panel) for one 
time marker for each major division, and adjust the amplifier 
Calib control (front panel) for exactly two major divisions of 
calibrator signal amplitude. 



For Performance Check only: 

CHECK — One cycle of calibrator waveform for each 
marker (see Fig. 5-17). The error in 10 major divisions must 
be <0.5 minor divisions (the positive transition of the square 
wave at the right hand edge of the graticule must be no 
more than 0.5 minor division (1 mm) from the positive transi- 
tion of the corresponding time marker). Disconnect the time- 
mark generator and proceed to step 20. 

g. ADJUST — R154, Frequency (Fig. 5-16), for one cycle 
of calibrator waveform for each marker. See Fig. 5-17. 
(Since the sweep was calibrated in step f, the display should 
also be one cycle of calibrator waveform for each major 
division). 

h. Position the leading edge of the tenth cycle of cali- 
brator waveform to the center of the graticule and turn the 
5X Magnifier on. 

i. Make final adjustment of the Frequency control by 
aligning the positive-going transition of the square wave 
with the positive-going transition of the time marker. 

j. Turn the 5X Magnifier off and position the sweep start 
to the left edge of the graticule. 

k. Disconnect the time-mark generator. 







rator 
on fi 


signa 

ne-mc 


1 sup! 
irk sij 


srimpo 

jnal. 














Calib 


sed 




























■ 


H 


H 


■I 


■ 


nil 


H 


H 


B 


m 




■ 


■ 




■ 


■ 


■ 


■ 


H 




1 


BBMI 






BRni 






flHm 


■■■1 


iHHM 



































































Fig. 5-17. Typical CRT display showing correct calibrator repeti- 
tion rate. 

20. Check Calibrator Duty Factor 

a. Change the following control settings: 

Mode (amplifier unit) Ch 1 

Volts/Div (amplifier unit) 1 

Time/Div (time-base unit) 0.1 ms 

b. Center the display vertically with the Ch 1 Position 
control. 

c. Set the Triggering Level control so the display starts 
on the rising portion of the waveform. 

d. Turn the 5X Magnifier on. 



5-17 





Performance Check/Calibration — Type 564B 




Fig. 5-18. Typical CRT display when checking calibrator duty cycle. 



21. Check Calibrator Risetime 

a. Change the following control settings: 



Volts/Div 


0.5 


5X Mag 


Off 


Time/Div (Normal Sweep) 


0.5 ms 


Time/Div (Delayed Sweep) 


1 jXS 


Triggering Slope 


+ 



b. Adjust the amplifier unit Variable Volts/Div control 
(concentric with Volts/Div switch) for exactly 5 divisions of 
vertical display. 

c. Set the time-base Mode switch to Intensified and adjust 
the Delay Time dial to brighten the leading edge of the 
second cycle of display (approximately 2.00). 

d. Set the time-base Mode switch to Delayed Sweep. 

e. Position the 10% point on the leading edge to a verti- 
cal graticule line. It may be necessary to increase the inten- 
sity slightly to see the leading edge. 



e. Position the 50% point on the falling edge of the cali- 
brator waveform to the center vertical line. 

f. Set the Triggering Slope to 

g. CHECK — 50% point on the rising edge is now displayed 
not more than two divisions from the center vertical line 
(indicates a duty factor of 48% to 52%; see Fig. 5-18). 



f. CHECK — CRT display for one division or less between 
the 10% and 90% points on the leading edge of the cali- 
brator waveform (one microsecond, or less, risetime; see Fig. 
5-19). 

g. Set the time-base Mode switch to Norm, amplifier 
Volts/Div switch to 5 and the CALIBRATOR switch to 40 V. 



NOTES 




® 



5-18 




Performance Check/ Calibration — Type 564B 





Fig. 5-19. Idealized waveform showing maximum allowable cali- 
brator risetime at sweep rate of 1 ^s/division. 

h. Repeat steps b through e to obtain the leading-edge 
display of the 40-volt calibrator waveform. 

i. CHECK — CRT display for 2.5 divisions or less between 
the 10% and 90% points on the leading edge of the cali- 
brator waveform (2.5 microseconds, or less, risetime). 

j. Disconnect the coaxial cable. 

22. Check Currenf Through Probe Loop 

a. Change the following control settings: 

CALIBRATOR 10 mA 

Mode (time-base) Norm 

Volts/Div 0.01 (Calibrated) 

b. Connect the current-measuring probe and passive termi- 
nation to the Ch 1 input connector. Set the passive termina- 
tion for a sensitivity of 2 mA/mV. 



Fig. 5-20. Typical CRT display when checking calibrafor current. 

c. Clip the current probe around the probe loop on the 
front panel. 

d. Position the display vertically so the amplitude of the 
square-wave current can be measured. 

e. CHECK — CRT display is 0.5 division in amplitude (ten 
milliamperes; see Fig. 5-20). 

NOTE 

This step checks for the presence of current in the 
probe loop. This current will remain within the 
stated 1 % accuracy due to the tolerance of the 
divider resistors and tolerance of the calibrator 
output voltage. If it is necessary to verify the ac- 
curacy of the calibrator current, use a current meas- 
uring meter with an accuracy of at least 0.25%. 

f. Disconnect all test equipment. 



NOTES 




Performance Check/ Calibration — Type 564B 




Fig. 5-21. Test equipment required for steps 23 and 32. 



STORAGE SYSTEM 



Control Settings 



Type 564B 



INTENSITY 

FOCUS 

ASTIGMATISM 
SCALE ILLUM 
CALIBRATOR 
CRT CATHODE SELECTOR 
(rear panel) 

STORE (both) 
ENHANCE (both) 



Counterclockwise 

Well-defined trace 
Well-defined trace 
As desired 

Off 

NORM 

On (pushed in) 

Off (out) 



Vertical Amplifier 



Ch 1 Input Coupling DC 

Ch 1 Volts/ Div 0.5 

Mode Ch 1 

Position Centered 



Time-Base 

Mode Norm 

Time/ Div 1 ms 



Normal-Single Sweep Norm 

Slope + 

Coupling Auto 

Source Int 

Level Clockwise 



23. Adjust Flood Gun Bias 

a. Test equipment required for steps 23 through 32 is 
shown in Fig. 5-21. The illustrated equipment is keyed to 
that listed under Test Equipment Required. 

b. Adjust the INTENSITY control for a sweep of normal 
display brightness, then write the entire screen by position- 
ing the trace vertically. If the screen fails to write, adjust 
the INTENSITY control slightly clockwise and repeat the 
process until the screen is fully written. 

c. Rotate the INTENSITY control counterclockwise. 

For Performance Check only: Check that the entire screen 
is fully written and without shadows around the corners. Set 

both STORE switches to OFF (pushbuttons out) and pro- 
ceed to step 28. 






Performance Check/ Calibration — Type 564B 




Fig. 5-22. Location of storage controls and test points. 

d. With the screen fully written, rotate R478, Flood Gun 
Bias (Fig. 5-22), fully counterclockwise. Note the shadows 
at the corners of the screen (Fig. 5-23A). 

e. Slowly rotate the Flood Gun Bias control clockwise 
until the shadows just disappear (Fig. 5-23B), then rotate the 
control another 10° clockwise past this point. 

f. Press both ERASE buttons to clear the storage screens. 



24. Adjust Collimation 

This step is not applicable to Performance Check. 

a. Write the entire screen as outlined in step 23b. 

b. Rotate the INTENSITY control counterclockwise. 

c. With the screens fully written, rotate R470, Collimation 
#1 (Fig. 5-22), fully counterclockwise, then clockwise to the 
point where the screens just begin to brighten. 

d. Rotate R462, Collimation #2 (Fig. 5-22), fully counter- 
clockwise. 

e. While continuously pushing both ERASE buttons, note 
that the screen edges are brightened and pulled in. See 
Fig. 5-24A. 

f. Rotate the Collimation #2 control clockwise, and while 
continuously pushing and releasing the ERASE buttons, note 
the screen edges brighten and exhibit a halo effect. See Fig. 
5-24B. 



g. While continuously pushing the ERASE buttons, adjust 
the Collimation #2 control clockwise until uniform edge 
lighting is just achieved (Fig. 5-24C). Further clockwise rota- 
tion will cause an undesirable radial pattern on the screen. 

h. INTERACTION — Collimation affects storage capabilities. 



25. Check Operating Level Range 

This step is not applicable to Performance Check. 

UPPER TARGET 

a. Connect a DC voltmeter, set to the 300-volt range, 
between pin P of the Storage board (see Fig. 5-22) and 
ground. 

b. Record the voltmeter reading so that the operating 

level can be reset to this voltage after the range is checked. 
Meter reading • 

c. Rotate R332, upper screen Op Level (Fig. 5-22), fully 
counterclockwise and then note the voltmeter reading. 

d. CHECK— Operating level is +125 volts or less. 

e. Rotate the upper screen Op Level control fully clock- 
wise, note the voltmeter reading, and rotate the upper screen 
Op Level control counterclockwise. 

f. CHECK — Operating level noted in step e is +275 volts 
or more. 

g. Push the upper ERASE button, then adjust the upper 
screen Op Level to the voltage recorded in step b. 

LOWER TARGET 

h. Connect the DC voltmeter, set to the 300-volt range, 
between pin Q of the Storage board (see Fig. 5-22) and 
ground. 

i. Record the voltmeter reading so that the operating level 

can be reset to this voltage after the range is checked. 
Meter reading 

j. Rotate R432, lower screen Op Level (Fig. 5-22), fully 
counterclockwise and note the voltmeter reading. 

k. CHECK — Operating level is +125 volts or less. 

l. Rotate the lower screen Op Level control fully clock- 
wise, note the voltmeter reading, then rotate the lower screen 
Op Level control counterclockwise. 

m. CHECK— Operating level noted in step ! is +275 volts 
or more. 

n. Push the lower ERASE button, then adjust the lower 
screen Op Level control to the voltage recorded in step i. 



26. Adjust Operating Level 

This step is not applicable to Performance Check. 











Performance Check/Calibration — Type 564B 



NOTE 

IF CRT PERFORMANCE HAS BEEN SATISFACTORY, 
NO ADJUSTMENT OF THE OP LEVEL CONTROLS 
IS NECESSARY. PROCEED TO STEP 27. Some com- 
promises in the CRT display can be made with slight 
adjustment of the Op Level controls. When the 
operating level is increased, the brightness and 
writing speed increases; however, the contrast 
ratio decreases. When the operating level is 
decreased, the contrast ratio increases, but the 
brightness and writing speed decrease. 

a. Set both STORE switches to Off (pushbutton out) and 
increase the intensity to normal display brightness. 

b. Adjust the FOCUS and ASTIGMATISM controls for a 
well-defined trace. 

c. Set the time-base Normal-Single Sweep switch to Single 
Sweep and push in the STORE buttons. 

d. When locating the operating point for each target as 
outlined in the following steps, connect the DC voltmeter to 
pin P and adjust Op Level R332 for the upper target, and 
connect the DC voltmeter to pin Q and adjust Op Level R432 
for the lower target. These controls and test points are 
shown in Fig. 5-22. 

e. Locate Writing Threshold for both storage screens as 
follows: 

1. Write approximately three lines per centimeter on 
each target area by depressing the time-base Normal-Sin- 
gle Sweep switch down to the Reset position. After each 
line is written, change the vertical position before writing 
the next trace. 

2. Carefully check the written lines for breaks or gaps 
of 0.025 inches or more. If no breaks or gaps are evident 
after 10 seconds (see Fig. 5-25), note the voltmeter reading, 
then adjust the Op Level control to reduce the operating 
level by 5 volts. 

3. Erase twice, wait 10 seconds, then write again and 
check for breaks or gaps. 

4. Repeat this procedure of decreasing the operating 
voltage in 5-voit steps until breaks of approximately 0.025 
inch occur. This is the Writing Threshold. Note this volt- 
age and rotate the Op Level control clockwise until the 

original level noted in step 2 is reached. 

NOTE 

Do not change the INTENSITY, FOCUS or ASTIG- 
MATISM control settings. 

f. Locate the Upper Writing Limit as follows: 

1. Press the ERASE buttons to prepare the target areas 
for storage. 

2. Write approximately three lines per centimeter on the 
target areas by depressing the Normal-Single Sweep switch 
down to the Reset position. After each line is written, 
change the vertical position before writing the next trace. 

3. Carefully check the stored lines and background for 
trace spreading of about 0.025 inch or background fade- 




(B) 



Fig. 5-23. Typical CRT displays showing Flood Gun Bias control 
(A) adjusted for insufficient screen coverage and (B) adjusted 
correctly. 

up. See Fig. 5-25. If no trace spreading or background 
fade-up is evident after 10 seconds, adjust the Op Level 
control to increase the operating level by 5 volts. 

4. Erase twice, wait 10 seconds, then write again and 
check for spreading or fade-up. 

5. Repeat this procedure until trace spreading of ap- 
proximately 0.025 inch, or background fade-up, occurs. 
This is the Upper Writing Limit. Note this voltage. 

g. Adjust the Op Level control for an operating point mid- 
way between the Writing Threshold and Upper Writing Limit 
for each storage target. It is desirable to have both storage 
targets at the same operating level to minimize the difference 
in background illumination. 

h. Rotate the INTENSITY control counterclockwise and 
set the Normal-Single Sweep switch to Normal. 

i. Disconnect the DC voltmeter. 

j. INTERACTION — Collimation is affected if change in 
operating level is significant. 




Performance Check/Calibration — Type 564B 




(C) 



Fig. 5 - 24 . Typical CRT displays showing Collimation #2 adjusted 
(A) too far clockwise, (B) too far counterclockwise, and (C) for 
uniform display brightness. 



27. Adjust Non-Store Level 

This step is not applicable to Performance Check. 

a. Set the upper screen STORE switch to Off and erase 
the lower screen. 

b. ADJUST— R342, Non-Store Level (Fig. 5-22), for the best 
division between the two screens, with no background glow 
on the upper (non-stored) screen. See Fig. 5-26. 

c. Set the lower screen STORE switch to Off. 

d. CHECK — The screen must become dark quickly and 
completely with minimal disturbance of the other screen, 

e. Press in both STORE buttons and repeat steps a through 
d to ensure proper setting of Non-Store Level. 



28. Check Writing Speed 

a. Slowly increase the intensity to the point where the 
trace begins to defocus rapidly. 

b. Set the time-base Normal-Single Sweep switch to Sin- 
gle Sweep and press in both STORE buttons. 

c. Alternately store and erase single sweeps of the trace 
while continuously increasing the sweep rate in small steps. 
With the Time/Div switch and Variable Time/Div control, 
adjust the sweep rate for the fastest sweep that will permit 
the trace to store anywhere on the center 6-cm by 8-cm 
area of the screens with breaks in the trace not exceeding 
1 mm. This is the maximum writing speed of the CRT. (Do 
not change the settings of the Time/Div or Variable controls 
until the sweep rate has been measured.) 

d. Use the following procedure to determine the sweep 
rate of the Type 564B at maximum writing speed: 




Fig. 5-25. Typical CRT display showing Upper Writing Limit on 
upper screen and Writing Threshold on lower screen. 



® 



5-23 








Performance Check/ Calibration — Type 564B 




Fig. 5-26. Typical CRT display showing correct adjustment of R342, 
Non-Store Level. 



1. Reset only the following controls: 

INTENSITY Counterclockwise 

STORE (both) Off (out) 

Normal-Single Sweep Normal 

(time-base) 

2. Connect the time-mark generator marker output con- 
nector to the amplifier unit Ch 1 input connector with a 
coaxial cable. 

3. Set the time-mark generator for 0.1 -millisecond 
markers. 

4. Increase the intensity to normal display brightness 
and trigger the display. 

5. Measure the distance between 0.1 -millisecond markers 
and multiply by ten to determine the writing speed in centi- 
meters per millisecond. For example, if the distance is 3.5 
centimeters, the writing speed is 35 cm/ ms. 

e. CHECK — Writing speed is >25cm/ms for T5641-200 
storage tube; >100 cm /ms for T5641-201 tube. 

NOTE 

It may be necessary to repeat this step with a 
slightly higher trace intensity or higher operating 
level on the storage-target backplate (see step 
26 ). 

f. Leave the time-mark generator connected. 

29. Adjust Enhance Amplitude 

a. Change the following control settings: 

Input Coupling (amplifier) GND 

Time/Div (time-base) .1 ms calibrated 

b. Slowly increase the intensity to the point where the 
trace begins to defocus rapidly. 




Fig. 5-27. Typical CRT display showing correct adjustment of R373, 
Enhance (amplitude). 



c. Set the Normal-Single Sweep switch to Single Sweep, 
push In both STORE buttons and both ENHANCE buttons, and 
rotate the Enhance LEVEL control fully clockwise. 

For Performance Check only, proceed to step 30. 

d. Rotate R373, Enhance (Fig. 5-22), fully counterclockwise. 

e. Alternately store and erase single sweeps of the trace 
while adjusting R373 clockwise in small steps. Continue ad- 
justing R373 until the enhance pulses cause portions of the 
screens to start fading positive and the trace just begins to 
spread into the background. (See Fig. 5-27.) 

f. Erase both screens. 



30. Check Enhanced Writing Speed 



a. Alternately store and erase single sweeps of the trace 
while continuously increasing the sweep rate in small steps. 
With the Time/Div switch and Variable Time/Div control, 
adjust the sweep rate for the fastest sweep that will permit 
the trace to store anywhere on the center 6-cm by 8-cm area 
of the screens with breaks in the trace not exceeding 1 mm. 
This is the maximum enhanced writing speed of the CRT. (Do 
not change the settings of the Time/Div or Variable controls 
until the sweep rate has been measured.) 

b. Use the following procedure to determine the enhanced 
writing speed: 



1. Reset only the following controls: 



INTENSITY 
STORE (both) 

Input Coupling 
(amplifier) 

Normal-Single Sweep 
(time-base) 



Counterclockwise 
Off (out) 

DC 

Normal 



2. Set the time-mark generator for 10-microsecond 
markers. 



3. Increase the intensity to normal display brightness 
and trigger the display. 







Performance Check/ Calibration — Type 564B 



4. Measure the distance between time markers and multi- 
ply by TOO to determine the writing speed in centimeters 
per millisecond. For example, if the distance is 3.5 centi- 
meters, the writing speed is 350cm/ms. 

c. CHECK— Enhanced writing speed is >250cm/ms for 
T5641-200 storage tube; >500cm/ms for T5641-201 tube. 

d. Disconnect the time-mark generator. 



31. Check Locate Operation 

a. Change the following control settings: 

ENHANCE (both) Off (out) 

Time/Div (time-base) .1 ms calibrated 

b. Position the trace so that it starts exactly at the left 
edge of the graticule. 

c. Set the Normal-Single Sweep switch to Single Sweep. 

d. Press in the LOCATE button. 

e. CHECK — A medium-intensity spot should appear off- 
screen at the left edge of the graticule. It may be necessary 
to make a slight adjustment of R269, CRT Grid Bias (Fig. 5-4) 
to dim or brighten the spot. Note that the spot can be posi- 
tioned vertically by rotating the vertical Position control. 



NOTE 

The spot should not store in the locate zone at the 
left edge of the graticule. 

f. Release the LOCATE button. 

32. Check Integrate Function 

a. Change the following control settings: 

INTENSITY Counterclockwise 

STORE (both) On (pushed in) 

Time/Div (time-base) 5 /xs 

b. While continuously depressing the Normal-Single Sweep 
switch down to the Reset position, slowly increase the inten- 
sity until the single sweep can be seen (they should not store). 

c. Press the INTEGRATE button and hold it in. 

d. Actuate several single sweeps of trace, without chang- 
ing display positioning. 

e. Release the INTEGRATE button. 

f. CHECK — A stored trace should be present on the screen. 

g. Press both ERASE buttons to clear the screens and dis- 
connect all test equipment. 

This completes the calibration procedure for the Type 564B 
Storage Oscilloscope. 



NOTES 




PARTS LIST ABBREVIATIONS 



BHB 


binding head brass 


int 


internal 


BHS 


binding head steel 


ig 


length or long 


cap. 


capacitor 


met. 


metal 


cer 


ceramic 


mtg hdw 


mounting hardware 


comp 

conn 

CRT 

csk 

DE 

dia 


composition 
connector 
cathode-ray tube 
countersunk 
double end 
diameter 


OD 

OHB 

OHS 

P/O 

PHB 

PHS 

piste 


outside diameter 
oval head brass 
oval head steel 
part of 

pan head brass 
pan head steel 
plastic 


div 


division 


PMC 


paper, metal cased 


elect. 


electrolytic 


poly 


polystyrene 


EMC 


electrolytic, metal cased 


prec 


precision 


EMT 


electrolytic, metal tubular 


PT 


paper, tubular 


ext 


external 


PTM 


paper or plastic, tubular, molded 


F 8c 1 


focus and intensity 


RHB 


round head brass 


FHB 


flat head brass 


RHS 


round head steel 


FHS 


flat head steel 


SE 


single end 


Fil HB 


fillister head brass 


SN or S/N 


serial number 


Fil HS 


fillister head steel 


S or SW 


switch 


h 


height or high 


TC 


temperature compensated 


hex. 


hexagonal 


THB 


truss head brass 


HHB 


hex head brass 


thk 


thick 


HHS 


hex head steel 


THS 


truss head steel 


HSB 


hex socket brass 


tub. 


tubular 


HSS 


hex socket steel 


var 


variable 


ID 


inside diameter 


w 


wide or width 


inc 


incandescent 


WW 


wire-wound 




PARTS ORDERING INFORMATION 

Replacement parts are available from or through your local Tektronix, Inc. Field 
Office or representative. 

Changes to Tektronix instruments are sometimes made to accommodate improved 
components as they become available, and to give you the benefit of the latest circuit 
improvements developed in our engineering department. It is therefore important, w^hen 
ordering parts, to include the following information in your order: Part number, instrument 
type or number, serial or model number, and modification number if applicable. 

If a part you have ordered has been replaced with a new or improved part, your 
local Tektronix, Inc. Field Office or representative will contact you concerning any change 
in part number. 



XOOO 
00 X 

* 000 - 0000-00 
Use 000-0000-00 



SPECIAL NOTES AND SYMBOLS 

Part first added at this serial number 
Part removed after this serial number 

Asterisk preceding Tektronix Part Number indicates manufactured by 
or for Tektronix, Inc., or reworked or checked components. 

Part number indicated is direct replacement. 




Type 564B 



SECTION 6 

ELECTRICAL PARTS LIST 



Values are fixed unless marked Variable. 



Tektronix Serial/Model No. 



Ckt. No. 


Part No. Eff 


Disc Description 






Bulbs 


84 


150-0047-00 


Incandescent #CN8-398 


85 


150-0047-00 


Incandescent #CN8-398 


86 


150-0047-00 


Incandescent #CN8-398 


87 


150-0045-00 


Incandescent #685 


8209 


150-0030-00 


Neon, NE 2V. 


8277 


150-0030-00 


Neon, NE 2V 


8278 


150-0030-00 


Neon, NE 2V 


8279 


150-0030-00 


Neon, NE 2V 









Capacitors 








Tolerance ±:20% 


unless otherwise 


indicated. 












C9 


290-0319-00 






1300/iF 


Elect. 


150 V 


+75%— 10% 


Cll 


290-0245-00 






1.5 


Elect. 


lOV 


10% 


C16 


281-0523-00 






100 pF 


Cer 


350 V 




C24 


281-0546-00 






330 pF 


Cer 


500 V 


10% 


C31 


290-0271-00 


8010100 


B1 89999 


9juF 


Elect. 


125 V 


+20%-! 5% 


C31 


290-0486-00 


81 90000 




6.8 mF 


Elect. 


100 V 


10% 


C36 


290-0398-00 






1 0,000 ^F 


Elect. 


25 V 


+100%— 107, 


C42 


290-0267-00 






l^F 


Elect. 


35 V 




C47 


290-0201-00 






lOOfiF 


Elect. 


15V 




C50 


281 -0525-00 


801 01 00 


B259999 


470 pF 


Cer 


500 V 




C50 


281-0605-00 


8260000 




200 pF 


(nominal value) 


selected 


C54 


290-0318-00 






650 /iF 


Elect. 


250 V 


+75%— 10% 


C62 


283-0079-00 


8010100 


B1 69999 


0.01 AtF 


Cer 


250 V 




C64 


281-0518-00 


XB230000 




47 pF 


(nominal value) 


selected 


C62 


283-0267-00 


8170000 




0.01 fj.F 


Cer 


500 V 




C65 


281-0638-00 


801 01 00 


B1 89999 


240 pF 


Cer 


500 V 


5% 


C65 


283-0104-00 


8190000 




2000 pF 


Cer 


500 V 


5% 


C75 


290-0305-00 


XBl 40000 


B189999X 


3jtxF 


Elect. 


150 V 




C78 


290-0181-00 






290 ,iF 


Elect. 


350 V 




C82 


283-0079-00 


8010100 


B1 69999 


0.01 ,iF 


Cer 


250 V 




C82 


283-0267-00 


8170000 




0.01 ;UF 


Cer 


500 V 




C88 


281-0536-00 






1000 pF 


Cer 


500 V 


107o 


C97 A,8 


290-0089-00 






3 X 20 /iF 


Elect. 


350 V 




C102 


281-0027-00 






0.7-3 pF, Var 


Tub. 






Cl 03 


283-0003-00 






0.01 ^iF 


Cer 


150 V 




Cl 09 


281-0027-00 






0.7-3 pF, Var 


Tub. 






C157 


♦285-0758-00 






0.05 /xF 


MT 


400 V 


27. 


C203 


283-0000-00 






0.001 fiF 


Cer 


500 V 




C209 


283-0057-00 






0.1 /xF 


Cer 


200 V 


+8070—207, 


C215 


283-0092-00 


8010100 


B1 39999 


0.03 /xF 


Cer 


200 V 


+807,— 207, 


C215 


285-0628-00 


8140000 




0.033 ^F 


PTM 


300 V 




C217 


285-0572-00 






0.1 nF 


PTM 


200 V 




C221 


283-0071-00 






0.0068 M.F 


Cer 


5000 V 





REV. F APR. 1975 



6-1 




Electrical Parts List — Type 564B 



Capacitors (confj 



Tektronix Serial/Model No. 



Ckt. No. 


Part No. 


Eff 


Disc 




Description 




C223 


283-0008-00 






0.1 yxF 


Cer 


500 V 




C229 


283-0071-00 






0.0068 IX? 


Cer 


5000 V 




C232 


283-0071-00 






0.0068 IX? 


Cer 


5000 V 




C250 


283-0071-00 






0.0068 IX? 


Cer 


5000 V 




C260 


283-0071-00 






0.0068 !x? 


Cer 


5000 V 




C262 


283-0071-00 






0.0068 IX? 


Cer 


5000 V 




C275 


283-0071-00 






0.0068 !x? 


Cer 


5000 V 




C301 


283-0003-00 






0.01 !x? 


Cer 


150V 




C313 


283-0000-00 






0.001 !x? 


Cer 


500 V 




C317 


283-0000-00 






0.001 !X? 


Cer 


500 V 




C319 


283-0000-00 






0.001 !X? 


Cer 


500 V 




C323 


290-0264-00 






0.22 !x? 


Elect. 


35 V 


10% 


C330 


290-0134-00 






22 !x? 


Elect. 


15 V 




C343 


290-0284-00 






4.7 /iF 


Elect. 


35 V 


10% 


C355 


290-0370-00 






25juF 


Elect. 


350 V 


+50%— 10% 


C361 


281-0525-00 






470 pF 


Cer 


500 V 




C367 


285-0629-00 


B010100 


B069999 


0.047 !x? 


PTM 


100 V 




C367 


285-0686-00 


B070000 




0.68 !x? 


PTM 


100 V 


10% 


C401 


283-0003-00 






0.01 !x? 


Cer 


150 V 




C413 


283-0000-00 






0.001 !x? 


Cer 


500 V 




C417 


283-0000-00 






0.001 !x? 


Cer 


500 V 




C419 


283-0000-00 






0.001 !x? 


Cer 


500 V 




C423 


290-0264-00 






0.22 ;^F 


Elect. 


35 V 


10% 


C430 


290-0134-00 






22juF 


Elect. 


15V 




C443 


290-0284-00 






4.7 /tF 


Elect. 


35 V 


10% 


C455 


290-0370-00 






25/iF 


Elect. 


350 V 


+50%— 10% 


C462 


285-0537-00 






0.5 aiF 


MPT 


400 V 





Semi-conductor Device, Diodes 



D8A,B,C,D(4) 


152-0066-00 




Silicon 


1N3194 


DIO 


152-0212-00 




Zener 


1N936 9V, 5%, TC 


D19 


♦152-0185-00 




Silicon 


Replaceable by 1N4152 


D24 


152-0428-00 


XB220000 


Zener 


1N9878B, 0.4 W, 120 V, 5% 


D25 


152-0333-00 




Silicon 


High Speed and Conductance 


D31 


152-0066-00 




Silicon 


1N3194 


D35 A,B(2) 


*152-0198-00 




Silicon 


Replaceable by MR-1032A 


D47 


152-0066-00 




Silicon 


1N3194 


D53A,B,C,D(4) 


152-0066-00 




Silicon 


1N3194 


D62 


*152-0185-00 




Silicon 


Replaceable by 1N4152 


D65 


*152-0107-00 




Silicon 


Replaceable by 1N647 


D68 


*152-0107-00 


XB080000 


Silicon 


Replaceable by 1N647 


D70 


*152-0107-00 


XB080000 


Silicon 


Replaceable by 1N647 


D75 


152-0066r00 




Silicon 


1N3194 


D76 


152-0066-00 




Silicon 


1N3194 


D77A,B,C,D(4) 


152-0066-00 




Silicon 


1N3194 



6-2 




Electrical Parts List — Type 564B 



Semi-conductor Device, Diodes fconf) 



Tektronix Serial/Model No. 



Ckt. No. 


Part No. 


Eff 


Disc 




Description 


D80 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D88 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D90 


♦152-0107-00 


XB080000 




Silicon 


Replaceable by 1N647 


D91 


*152-0107-00 


XB080000 




Silicon 


Replaceable by 1N647 


D95 


152-0066-00 






Silicon 


1N3194 


D103 


152-0008-00 






Germanium 




D105 


*152-0061-00 






Silicon 


Tek Spec 


D151 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D159 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D161 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D164 


*152-0185-00 


BOlOlOO 


B039999 


Silicon 


Replaceable by 1N4152 


D164 


*152-0107-00 


B040000 




Silicon 


Replaceable by 1N647 


D168 


152-0333-00 






Silicon 


High Speed and Conductance 


D204 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D212 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D214 


*152-0107-00 


XBl 40000 




Silicon 


Replaceable by 1N647 


D217 


152-0333-00 






Silicon 


High Speed and Conductance 


D221 


152-0218-00 


BOlOlOO 


B059999 


Silicon 


10,000 V 20 mA 


D221 


152-0408-00 


B060000 




Silicon 


10,000 V 5 mA 


D260 


152-0218-00 


BOlOlOO 


B059999 


Silicon 


10,000 V 20 mA 


D260 


152-0408-00 


B060000 




Silicon 


10,000 V 5 mA 


D271 


152-0066-00 






Silicon 


1N3194 


D272 


152-0066-00 






Silicon 


1N3194 


D275 


152-0066-00 






Silicon 


1N3194 


D318 


*152-0061-00 






Silicon 


Tek Spec 


D322 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D324 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D329 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D330 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D346 


*152-0107-00 


XB240000 




Silicon 


Replaceable by 1N647 


D347 


152-0427-00 


XB240000 




Zener 


1N985B 0.4 W, lOOV, 5% 


D350 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D352 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D355 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D356 


152-0247-00 






Zener 


1N989B 0.4 V^, 150 V, 5% 


D357 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D363 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D365 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D368 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D369 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D418 


*152-0061-00 






Silicon 


Tek Spec 


D422 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D424 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D429 


*152-0185-00 






Silicon 


Replaceable by 1N4152 


D430 


*152-0107-00 






Silicon 


Replaceable' by 1N647 


D446 


*152-0107-00 


XB240000 




Silicon 


Replaceable by 1N647 


D447 


152-0427-00 


XB240000 




Zener 


1N985B 0.4 W, lOOV, 5% 


D450 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D452 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D455 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D456 


152-0247-00 






Zener 


1N989B 0.4 W, 150 V, 5% 


D457 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D465 


*152-0107-00 






Silicon 


Replaceable by 1N647 


D473 


152-0150-00 






Zener 


1N3037B 1 W, 51 V, 5% 




Electrical Parts List — Type 564B 



Fuses 



Ckt. No. 


Tektronix 
Part No. 


Serial/Model 

Eff 


No. 

Disc 




Description 


FI 

F2 

F9 


159-0026-00 

159-0023-00 

159-0083-00 






3.2 A 
2A 

150 mA 


3AG Slo-Blo 
3AG Slo-Blo 
3AG Fast-Blo 



Connectors 



Jll 


131-0148-00 


J21 


131-0148-00 


J183 


131-0274-00 


J255 


131-0126-00 


J950 


136-0089-00 



24 Contact, Female 
24 Contact, Female 
BNC 
BNC 



9 pin 



Inductor 



L259 *108-0495-00 



CRT Beam Rotator 



Transistors 



Q12 


151-0190-00 






Silicon 


2N3904 


Q14 


151-0190-00 






Silicon 


2N3904 


Q24 


151-0190-00 






Silicon 


2N3904 


Q28 


*151-0136-00 






Silicon 


Replaceable by 2N3053 


Q30 


151-0190-00 






Silicon 


2N3904 


Q32 


151-0149-00 






Silicon 


2N3441 


Q38 


151-0190-00 






Silicon 


2N3904 


Q44 


*151-0192-00 






Silicon 


Replaceable by MPS-6521 


Q46 


*151-0192-00 






Silicon 


Replaceable by MPS-6521 


Q49 


*151-0136-00 






Silicon 


Replaceable by 2N3053 


Q51 


151-0165-00 






Germanium 


2N3614 


Q58 


151-0190-00 






Silicon 


2N3904 


Q60 


151-0190-00 






Silicon 


2N3904 


Q66 


*151-0253-00 


BOIOIOO 


B1 89999 


Silicon 


Replaceable by 2N3439 


Q66 


*151-0150-00 


B1 90000 




Silicon 


Selected from 2N3440 


Q68 


♦151-0253-00 


BOIOIOO 


B1 89999 


Silicon 


Replaceable by 2N3439 


Q68 


*151-0150-00 


B1 90000 




Silicon 


Selected from 2N3440 


Q70 


151-0190-00 






Silicon 


2N3904 


Q74 


*151-0256-00 






Silicon 


Tek Spec 


Q84 


151-0190-00 






Silicon 


2N3904 


Q86 


151-0190-00 






Silicon 


2N3904 


Q88 


*151-0253-00 


BOIOIOO 


B1 89999 


Silicon 


Replaceable by 2N3439 


Q88 


*151-0150-00 


B1 90000 




Silicon 


Selected from 2N3440 


Q90 


*151-0253-00 


BOIOIOO 


B1 89999 


Silicon 


Replaceable by 2N3439 


Q90 


*151-0150-00 


B1 90000 




Silicon 


Selected from 2N3440 


Q91 


151-0190-00 






Silicon 


2N3904 


Q96 


*151-0256-00 






Silicon 


Tek Spec 


Q151 


*151-0216-00 






Silicon 


Replaceable by MPS-6523 


Q159 


*151-0216-00 






Silicon 


Replaceable by MPS-6523 



6-4 



Electrical Parts List — Type 564B 



Ckt. No. 


Tektronix 
Port No. 


Transistors fconfj 

Serial/Model No. 

Eff Disc 


Description 


Q162 


151-0250-00 




Silicon 


2N5184 


Q211 


151-1005-00 




Silicon 


FET 


Q214 


♦151-0228-00 




Silicon 


Tek Spec 


Q219 


151-0201-00 




Silicon 


2N3739 


Q325 


151-0224-00 




Silicon 


2N3692 


Q328 


151-0190-00 




Silicon 


2N3904 


Q347 


151-0169-00 




Silicon 


2N3439 


Q351 


♦151-0150-00 




Silicon 


Selected from 2N3440 


Q358 


♦151 -0150-00 




Silicon 


Selected from 2N3440 


Q370 


151-0224-00 




Silicon 


2N3692 


Q374 


151-0224-00 




Silicon 


2N3692 


Q425 


151-0224-00 




Silicon 


2N3692 


Q428 


151-0190-00 




Silicon 


2N3904 


Q447 


151-0169-00 




Silicon 


2N3439 


Q451 


♦151-0150-00 




Silicon 


Selected from 2N3440 


Q458 


♦151-0150-00 




Silicon 


Selected from 2N3440 









Resistors 








Resistors are 


fixed, composition, ±: 


10% unless 


otherwise indicated. 








R4 


311-0377-00 




25 a, Var 








R7 


302-0330-00 




33 Q 


'AW 






R8 


307-0093-00 




1.217 


'AW 




5% 


R9 


304-0333-00 




33k n 


1 w 






RIO 


305-0123-00 




12 ka 


2W 




5% 


Rll 


316-0102-00 




1 ka 


'AW 






R12 


316-0101-00 




100 a 


'AW 






R13 


323-0353-00 




46.4 ka 


'AW 


Free 


1% 


R14 


323-0394-00 




124 ka 


'AW 


Prec 


1% 


R16 


316-0101-00 




looa 


'AW 






R18 


321-0268-08 




6.04 ka 


'AW 


Prec 


1% 


R19 


321-0235-00 




2.74 ka 


'AW 


Prec 


1% 


R20 


323-0365-08 




61 .9 ka 


'AW 


Prec 


1% 


R21 


321-0445-00 




422 ka 


'AW 


Prec 


1% 


R23 


311-0465-00 




100 ka, Var 








R25 


315-0154-00 




150 ka 


'AW 




5% 


R26 


315-0823-00 




82 ka 


'AW 




5% 


R29 


316-0181-00 




180 a 


'AW 






R30 


315-0132-00 




1.3 ka 


'AW 




5% 


R31 


315-0204-00 


B010100 


B1 59999 200 ka 


'AW 




5% 


R31 


315-0184-00 


B1 60000 


180 ka 


'AW 




5% 


R33 


307-0103-00 




2.7 a 


'AW 




5% 


R36 


304-0103-00 




10 ka 


1 w 






R37 


316-0271-00 




270 a 


'AW 






R38 


308-0242-00 




0.25 a 


5W 


WW 


5% 


R39 


316-0101-00 




100 a 


'AW 







6-5 




Electrical Parts List — Type 564B 

Resistors fconf] 



Tektronix Serial/Model No. 



Ckt. No, 


Port No. 


Eff 


Disc 




Description 




R40 


323-0371-00 






71.5 ka 


’AW 


Free 


1% 


R42 


321-0296-03 






11.8 ka 


’AW 


Prec 


’A% 


R43 


323-0752-03 






85 ka 


’AW 


Free 


’A% 


R44 


316-0101-00 






100 a 


’AW 






R45 


323-0333-00 






28.7 ka 


’AW 


Prec 


1% 


R47 


316-0101-00 






100 a 


’AW 






R49 


302-0470-00 






47 a 


’AW 






R50 


302-0100-00 






loa 


’AW 






R52 


307-0024-00 






2.7 a 


’AW 






R53 


307-0024-00 






2.7 a 


’AW 






R54 


304-0473-00 






47 ka 


1 w 






R56 


316-0101-00 






100 a 


’AW 






R57 


323-0430-00 






294 ka 


’AW 


Prec 


1% 


R59 


323-0356-00 






49.9 ka 


’AW 


Prec 


1% 


R61 


316-0101-00 






100 a 


’AW 






R62 


323-0753-02 






121.3 ka 


’AW 


Prec 


'A% 


R63 


323-0384-02 






97.6 ka 


’AW 


Prec 


’A% 


R65 


316-0151-00 


BOlOlOO 


B1 89999 


150 a 


’AW 






R65 


316-0471-00 


B1 90000 




470 a 


’AW 






R66 


302-0224-00 






220 ka 


’AW 






R69 


315-0511-00 






5ioa 


’AW 




5% 


R70 


315-0104-00 






100 ka 


’AW 




5% 


R72 


316-0181-00 






180 a 


’AW 






R75 


307-0103-00 






2.7 a 


’AW 




5% 


R77 


307-0024-00 






2.7 a 


’AW 






R78 


304-0104-00 






100 ka 


1 W 






R80 


323-1429-02 






291 ka 


’AW 


Prec 


’A% 


R81 


323-0384-02 






97.6 ka 


’AW 


Prec 


’A% 


R83 


316-0101-00 






100 a 


’AW 






R85 


323-0356-00 






49.9 ka 


’AW 


Prec 


1% 


R86 


323-0430-00 






294 ka 


’AW 


Prec 


1% 


R87 


316-0101-00 






100 a 


’AW 






R88 


316-0471-00 






470 a 


’AW 






R89 


302-0224-00 






220 ka 


’AW 






R90 


315-0162-00 






1.6 ka 


’AW 




5% 


R91 


315-0564-00 






560 ka 


’AW 




5% 


R92 


315-0122-00 






1.2 ka 


’AW 




5% 


R94 


307-0103-00 






2.7 a 


’AW 




5% 


R95 


316-0181-00 






i80a 


’AW 






RlOl 


308-0124-00 


BOlOlOO 


B089999 


6ka 


low 


WW 


5% 


RlOl 


308-0021-00 


B090000 




4.5 ka 


low 


WW 


5% 


R103 


316-0473-00 






47 ka 


’AW 






R105 


316-0105-00 






1 Ma 


’AW 






R106 


316-0105-00 






1 Ma 


’AW 






R150 


323-0403-00 






154 ka 


’AW 


Prec 


1% 


R153 


308-0501-00 






5.45 ka 


1.5 W 


WW 


1% 


R154 


311-0826-00 






750 a, Var 









6-6 



© 




Electrical Parts List — Type 564B 



Resistors fconfj 



Tektronix Serial/Model No. 



Ckt. No. 


Part No. 


Eff 


Disc 




Description 




R156 


315-0624-00 






620 kn 


’AW 




5% 


R158 


323-0404-00 






158 kn 


'AW 


Prec 


1% 


R160 


315-0224-00 






220 kn 


'AW 




5% 


R164 


308-0515-00 






i4.5kn 


5 W 


ww 


1% 


R166 


311-0732-00 






1 kn, Var 








R1 67 


308-0492-00 






8.15 kn 


3W 


ww 


1% 


R170 


323-0741-03 






3.6 kn 


'AW 


Prec 


’A% 


R171 


321-0773-03 






400 n 


'AW 


Prec 


'A% 


R173 


321-0772-02 






63 n 


'AW 


Prec 


'A% 


R175 


321-0774-03 






4.5 kn 


'AW 


Prec 


'A% 


R176 


321-0775-03 






45 kn 


'AW 


Prec 


'A7o 


R178 


308-0488-00 






5n 


2.5 W 


ww 


2% 


R179 


308-0499-00 






0.5 n 


2.5 W 


ww 




R181 


321-0771 -03 






50 n 


'AW 


Prec 


’A% 


R183 


*308-0090-00 






0.25 n 


1 w 


ww 




R200 


315-0103-00 






10 kn 


'AW 




5% 


R201 


322-0464-00 






665 kn 


'AW 


Prec 


1% 


R203 


315-0474-00 






470 kn 


'AW 




5% 


R204 


316-0336-00 






33 Mn 


'AW 






R205 


316-0472-00 






4.7 kn 


'AW 






R206 


311-0465-00 






100 kn, Var 








R208 


316-0225-00 






2.2 Mn 


'AW 






R210 


315-0104-00 






lookn 


'AW 




5% 


R211 


315-0154-00 






150 kn 


'AW 




57c 


R213 


316-0102-00 






1 kn 


'AW 






R214 


302-0393-00 


XBl 40000 




39 kn 


'AW 






R215 


316-0333-00 






33 kn 


'AW 






R216 


302-0333-00 






33 kn 


'AW 






R217 


316-0105-00 






1 Mn 


'AW 






R218 


301-0510-00 


BOlOlOO 


B255345 


51 n 


'AW 




57o 


R218 


301-0101-00 


B255346 


B259999 


100 n 


'AW 




5% 


R218 


301-0750-00 


B260000 




75 n 


'AW 




-f fO 

57 


R223 


316-0102-00 






1 kn 


%w 






R224 


301 -0752-00 


XB260000 




7.5 kn 


'AW 




57c 


R225 


311-0018-00 






20 kn, Var 








R226 


305-0563-00 






56 kn 


2W 




57c 


R227 


315-0334-00 






330 kn 


'AW 




57c 


R228 


315-0134-00 






i30kn 


'AW 




57c 


R229 


316-0223-00 






22 kn 


'AW 






R231 


302-0104-00 






100 kn 


'AW 






R233 


305-0475-00 






4.7 Mn 


2W 




57o 


R234 


305-0475-00 






4.7 Mn 


2W 




57c 


R235 


303-0365-00 






3.6 Mn 


1 w 




57o 


R236 


304-0106-00 






10 Mn 


1 w 






R237 


311-0121-01 






5Mn, Var 








R238 


301-0225-00 






2.2 Mn 


'AW 




57. 


R240 


316-0472-00 






4.7 kn 


'AW 






R242 


316-0472-00 






4.7 kn 


'AW 






R243 


316-0472-00 






4.7 kn 


'AW 







REV. D APR. 1975 



6-7 




Electrical Parts List — Type 564B 



Resistors fconfj 



Tektronix Serial/Model No. 



Ckf. No. 


Part No. 


Eff 


Disc 




Description 




R244 


316-0564-00 






560 ka 


V 4 W 




R246 


302-0104-00 






100 ka 


VjW 




R248 


316-0273-00 






27 ka 


'A W 




R250 


316-0471-00 






470 a 


V 4 W 




R251 


316-0105-00 






1 MQ 


'AW 




R257 


311-0206-00 






250 ka, Var 






R259 


311-0007-00 






2 X 1 ka, Var 






R261 


316-0104-00 






100 ka 


’AW 




R263 


305-0825-00 






8.2 Ma 


2 W 


5% 


R264 


305-0825-00 






8.2 Ma 


2 W 


5% 


R265 


305-0825-00 






8.2 Ma 


2W 


5% 


R266 


305-0825-00 






8.2 Ma 


2W 


5% 


R269 


311-0469-00 






1 MQ, Var 




R270 


316-0223-00 






22 ka 


’AW 




R273 


302-01 04-00 






100 ka 


’AW 




R274 


31 5-0242-00 






2.5 ka 


’AW 


5% 


R275 


316-0471-00 






470 a 


’AW 


R276 


316-0105-00 






1 Ma 


’AW 




R301 


316-0106-00 






lOMa 


’AW 




R303 


316-0102-00 






1 ka 


’AW 




R305 


316-0103-00 






10 ka 


'AW 




R310 


316-0103-00 






10 ka 


’A W 




R312 


316-0106-00 






10 MO 


’AW 




R313 


316-0105-00 






1 MO 


’AW 




R315 


316-0106-00 






lOMa 


’AW 




R316 


316-0105-00 






1 Ma 


’AW 




R317 


316-0103-00 






10 ka 


’AW 




R318 


316-0105-00 






1 Ma 


’AW 




R319 


316-0103-00 






10 ka 


’AW 




R321 


315-0184-00 






180 ka 


’AW 


5% 


R322 


315-0563-00 






56 ka 


’AW 


5% 


R324 


316-0104-00 






100 ka 


’AW 




R326 


315-0133-00 






13 ka 


’AW 


5% 


R328 


323-0353-00 






46.4 ka 


1/3 W Prec 


1 % 


R329 


316-0221-00 






220 0 


'AW 




R331 


323-0346-00 






39.2 ka 


'/j W Prec 


1 % 


R332 


311-0510-00 


BOlOlOO 


B209999 


10 ka, Var 






R332 


311-1228-00 


B210000 




10 ka, Var 






R334 


323-0402-00 






150 ka 


'A W Prec 


1% 


R335 


321-0356-00 






49.9 ka 


’A W Prec 


1% 


R337 


321-0307-00 






15.4 ka 


'A W Prec 


1% 


R338 


321 -0333-00 






28.7 ka 


'A W Prec 


1% 


R339 


321-0349-00 






42.2 ka 


'A W Prec 


1% 


R340 


316-0473-00 






47 ka 


'AW 


R341 


315-0333-00 






33 ka 


’AW 


5% 


R342 


31 1 -0463-00 


BOlOlOO 


B209999 


5 ka, Var 


R342 


311-1227-00 


B210000 




5 ka, Var 







6-8 



(D 




Electrical Parts List — Type 564B 



Resistors fconfj 



Tektronix Serial/Model No. 



Ckt. No. 


Part No. 


Eff 


Disc 




Description 




R343 


315-0333-00 






33 kn 


’AW 




5% 


R344 


301-0393-00 






39 ka 


’AW 




5% 


R347 


305-0473-00 






47 kQ 


2W 




5% 


R353 


323-0430-00 






294 ka 


’AW 


Free 


1% 


R354 


315-0824-00 






820 ka 


’AW 




5% 


R356 


316-0103-00 






10 ka 


’AW 






R357 


316-0222-00 






2.2 ka 


’AW 






R359 


302-0823-00 






82 ka 


’AW 






R361 


316-0103-00 






10 ka 


’AW 






R363 


316-0104-00 






100 ka 


’AW 






R364 


316-0472-00 






4.7 ka 


’AW 






R366 


311-0641-00 






200 ka, Var 








R367 


315-0223-00 


BOlOlOO 


B069999 


22 ka 


’AW 




5% 


R367 


315-0203-00 


B070000 




20 ka 


’AW 




5% 


R368 


315-0273-00 






27 ka 


’AW 




5% 


R370 


316-0103-00 






10 ka 


’AW 






R372 


316-0472-00 






4.7 ka 


’AW 






R373 


311-0510-00 


BOlOlOO 


B209999 


10 ka, Var 








R373 


311-1228-00 


B210000 




10 ka, Var 








R401 


316-0106-00 






10 Ma 


’AW 






R403 


316-0102-00 






1 ka 


’AW 






R405 


316-0103-00 






10 ka 


'AW 






R410 


316-0103-00 






10 ka 


’AW 






R412 


316-0106-00 






10 Ma 


’AW 






R413 


316-0105-00 






1 Ma 


'AW 






R415 


316-0106-00 






lOMa 


'AW 






R416 


316-0105-00 






1 Ma 


’AW 






R417 


316-0103-00 






10 ka 


’AW 






R418 


316-0105-00 






1 Ma 


’AW 






R419 


316-0103-00 






10 ka 


’AW 






R421 


315-0184-00 






180 ka 


’AW 




5% 


R422 


315-0563-00 






56 ka 


’AW 




5% 


R424 


316-0104-00 






100 ka 


’AW 






R426 


315-0133-00 






13 ka 


’AW 




5% 


R428 


323-0353-00 






46.4 ka 


’AW 


Free 


1% 


R429 


316-0221-00 






220 a 


’AW 






R431 


323-0346-00 






39.2 ka 


’AW 


Free 


1% 


R432 


311-0510-00 


BOlOlOO 


B209999 


10 ka, Var 








R432 


311-1228-00 


B210000 




10 ka, Var 








R434 


323-0402-00 






150 ka 


’AW 


Free 


1% 


R435 


321-0356-00 






49.9 ka 


’/,W 


Free 


1% 


R437 


321-0307-00 






15.4 ka 


’AW 


Free 


1% 


R438 


321-0333-00 






28.7 ka 


’AW 


Free 


1% 


R439 


321-0349-00 






42.2 ka 


’AW 


Free 


1% 


R440 


316-0473-00 






47 ka 


’AW 






R441 


315-0333-00 






33 ka 


’AW 




5% 


R443 


315-0333-00 






33 ka 


’AW 




5% 


R447 


305-0473-00 






47 ka 


2W 




5% 






6-9 




Electrical Parts List — Type 564B 



Resistors fconfj 



Tektronix Serial/Model No. 
Part No. Eff Disc 



R453 


323-0430-00 






294 ka 


VjW 


R454 


315-0824-00 






820 kQ 


'/4 W 


R456 


316-0103-00 






10 ka 


V4 W 


R457 


316-0222-00 






2.2 ka 


’/. w 


R459 


302-0823-00 






82 ka 


’AW 


R462 


311-0624-00 


BOlOlOO 


B209999 


200 ka, Var 




R462 


311-1251-00 


B210000 




200 ka, Var 




R463 


302-0473-00 






47 ka 


'AW 


R465 


302-0333-00 






33 ka 


'AW 


R467 


302-0154-00 






150 ka 


'AW 


R470 


311-0023-00 






50 ka, Var 




R473 


302-0103-00 






10 ka 


'AW 


R475 


311-0018-00 






20 ka, Var 




R476 


316-0822-00 






8.2 ka 


'AW 


R478 


311-0551-00 


BOlOlOO 


B209999 


500 ka, Var 




R478 


311-1252-00 


B210000 




500 ka, Var 





Switches 

Wired or Unwired 



SWl 


260-0276-00 


Toggle 


POWER 


SW2^ 






SW3' 

SWl 50 Wired 


*262-0839-00 


Rotary 


1 kHz CALIBRATOR 


SWl 50 


260-0999-00 


Rotary 


1 kHz CALIBRATOR 



SW225 




260-0971 -00 


Push 


LOCATE 


SW255 




260-0450-00 


Slide 


CRT CATHODE SELECTOR 


SW300 ) 








STORE (Upper) 


SW304 > 


Wired 


♦262-0857-00 


Push 


ERASE (Upper) 


SW340 ) 








ENHANCE (Upper) 


SW300 ) 








STORE (Upper) 


SW304 [ 




260-1009-00 


Push 


ERASE (Upper) 


SW340 ) 








ENHANCE (Upper) 


SW400 








STORE (Lower) 


SW404 \ 


Wired 


*262-0857-00 


Push 


ERASE (Lower) 


SW440 ) 








ENHANCE (Lower) 


SW400 ) 








STORE (Lower) 


SW404 




260-1009-00 


Push 


ERASE (Lower) 


SW440 ) 








ENHANCE (Lower) 


SW480 




260-0645-00 


Push 


INTEGRATE 



Thermal Cutout 

TKl 260-0413-00 175®F itS’F 

'See Mechanical Parts List. Line Voltage Selector Body (*204-0279-00). 



6-10 



CD 




Electrical Parts List — Type 564B 



Transformers 

Tektronix Serial/Model No. 

Ckt. No. Port No. Eff Disc Description 

T1 *120-0575-00 L V. Power 

T220 *120-0466-00 BlOlOO B1 19999 H. V. Power 

T220 *120-0466-01 B1 20000 B1 99999 H. V. Power 

T220 *120-0466-02 B200000 H. V. Power 



Electron Tube 



V249 *154-0565-00 



T5641-200 CRT Standard Phosphor 



Optional Phosphor 



*154-0565-01 



CRT bistable storage 
phosphor type similar to 
PI; fast writing speed. 



6-11 




FIGURE AND INDEX NUMBERS 



Items in this section are referenced by figure and index numbers to the illustrations which 
appear either on the back of the diagrams or on pullout pages immediately following the 
diagrams of the instruction manual. 



INDENTATION SYSTEM 

This mechanical parts list is indented to indicate item relationships. Following is an 
example of the indentation system used in the Description column. 

Assembly and jar Component 

Detail Part of Assembly and I or Component 
mounting hardware for Detail Part 
Parts of Detail Part 

mounting hardware for Parts of Detail Part 
mounting hardware for Assembly andfor Component 

Mounting hardware always appears in the same indentation as the item it mounts, 
while the detail parts are indented to the right. Indented items are part of, and included 
with, the next higher indentation. 

Mounting hardware must be purchased separately, unless otherwise specified. 



PARTS ORDERING INFORMATION 

Replacement parts are available from or through your local Tektronix, Inc. Field Office 
or representative. 

Changes to Tektronix instruments are sometimes made to accommodate improved 
components as they become available, and to give you the benefit of the latest circuit 
improvements developed in our engineering department. It is therefore important, when 
ordering parts, to include the following information in your order: Part number, instru- 
ment type or number, serial or model number, and modification number if applicable. 

If a part you have ordered has been replaced with a new or improved part, your 
local Tektronix, Inc. Field Office or representative will contact you concerning any change 
in part number. 

Change information, if any, is located at the rear of this manual. 



ABBREVIATIONS AND SYMBOLS 



For an explanation of the abbreviations and symbols used in this section, please refer 
to the page immediately preceding the Electrical Parts List in this instruction manual. 




Mechanical Parts List — Type 564B 



INDEX OF MECHANICAL PARTS LIST ILLUSTRATIONS 

(Located behind diagrams) 

Fig. 1 FRONT 
Fig. 2 REAR 

Fig. 3 STANDARD ACCESSORIES 




Type 564B 



SECTION 7 

MECHANICAL PARTS LIST 



FIG. 



Fig. & 
Index 
No. 


Tektronix 
Part No. 


Serial/Model No. 
Eff Disc 


Q 

t 

y 


M 


333-1079-01 


BOlOlOO B1 79999 


1 




333-1079-05 


B1 80000 


1 


-2 


213-0088-00 




1 


-3 


386-1419-00 


BOlOlOO B1 79999 


1 




386-1419-02 


B 180000 


1 


-4 


354-0057-00 




1 


-5 


366-0220-00 




1 




213-0020-00 




1 


-6 






3 


-7 


210-0978-00 




1 


8 


210-0590-00 




1 


-9 


366-0220-00 




1 




213-0020-00 




1 


-10 






1 




210-0978-00 




1 


-11 


210-0590-00 




1 


-12 


200-0878-00 




1 


-13 


366-0220-00 




1 




213-0020-00 




1 


-14 


366-0220-00 




1 




213-0020-00 




1 


-15 


366-0322-01 




1 




213-0004-00 




1 


-16 


262-0839-00 




1 




260-0999-00 




1 




210-0012-00 




1 


-17 


210-0590-00 




1 



1 FRONT 



Description 

1 2 3 4 5 

PANEL, front 
PANEL, front 

mounting hardware: (not included w/panel) 
SCREW, thread cutting, #4xV4 inch, PHS 



PLATE, sub-panel 
PLATE, sub-panel 
plate includes; 

RING, ornamental 
KNOB, gray — ASTIGMATISM 
knob includes; 

SCREW, set, 6-32 x Va inch, HSS 
RESISTOR, variable 

mounting hardware for each: (not included w/resistor) 
WASHER, flat, Vb IDx^A inch OD 
NUT, hex., Va-32 x inch 



KNOB, gray — FOCUS 
knob includes: 

SCREW, set, 6-32 x Va inch, HSS 
RESISTOR, variable 

mounting hardware: (not included w/resistor) 
WASHER, flat, % iDxVj inch OD 
NUT, hex., 3/s-32 x Vu inch 



COVER, variable resistor 
KNOB, gray— INTENSITY 
knob includes: 

SCREW, set, 6-32 x Va inch, HSS 
KNOB, gray— SCALE ILLUM 
knob includes: 

SCREW, 6-32 X Va inch, HSS 
KNOB, gray— CALIBRATOR 
knob includes; 

SCREW, set, 6-32 x 3/^^ inch, HSS 
SWITCH, wired— CALIBRATOR 
switch includes: 

SWITCH, unwired 

mounting hardware: (not included w/switch) 
LOCKWASHER, internal, Ys ID x Vs inch OD 
NUT, hex., 3/3-32 x V,, inch 






7-1 




Mechanical Parts List — Type 564B 



FIG. 1 FRONT (conf) 



Fig. & 
Index 
No. 


Tektronix 
Part No. 


Serial/Model No. 
Eff Disc 


Q 

t 

y 


Description 

1 2 3 4 5 


1-18 


136-0223-00 




1 


SOCKET, light w/green lens 








- 


mounting hardware: (not included w/socket) 




210-0940-00 




1 


WASHER, flat, IDxYe '>^ch OD (not shown) 


-19 


210-0223-00 




1 


LUG, solder, x inch OD, SE 


-20 


210-0583-00 




1 


NUT, hex., ’4-32 x Vm inch 


-21 


260-0276-00 




1 


SWITCH, Toggle— POWER ON 








- 


mounting hardware: (not included w/switch) 




210-0414-00 




1 


NUT, hex., ’V32-32xy,4 inch 


-22 


354-0055-00 




1 


RING, locking 




210-0902-00 




1 


WASHER, flat, 0.470 ID x inch OD 


-23 


210-0473-00 




1 


NUT, 12 sided, 'V3j-32 x 0.634 inch 


-24 


131-0274-00 




1 


CONNECTOR, coax, 1 -contact insulated BNC w/hardware 


-25 


214-0335-00 




1 


BOLT, current loop 








- 


mounting hardware; (not included w/bolt) 


-26 


361-0059-00 




1 


SPACER 




210-0004-00 




1 


LOCKWASHER, internal, #4 


-27 


210-0849-00 




1 


WASHER, fiber 




210 - 0201-00 




1 


LUG, solder, SE #4 


-28 


210-0442-00 




2 


NUT, hex., 3-48 x inch 


-29 






1 


RESISTOR, variable 








- 


mounting hardware: (not included w/ resistor) 


-30 


210-0494-00 




1 


NUT, hex., 78*32 x V 2 x ^ Vi<s inch 


-31 


210 - 0012-00 




1 


LOCKWASHER, internal, % ID x Vs inch OD 


-32 


358-0010-00 




1 


BUSHING 


-33 


348-0056-00 




3 


GROMMET, plastic, Va inch 


-34 


200-0426-00 




1 


COVER, graticule 








- 


mounting hardware: (not included w/cover) 


-35 


210-0571-00 




4 


NUT, knurled 


-36 


352-0049-00 




1 


HOLDER, reflector 


-37 


378-0589-00 




1 


REFLECTOR 


-38 


378-0560-00 




1 


FILTER, light, smoke gray 


-39 


354-0181-00 




1 


RING, CRT shock mount 


-40 


331-0097-00 




1 


GRATICULE 


-41 


406-0877-00 




1 


BRACKET, CRT shield top 








- 


mounting hardware: (not included w/bracket) 


-42 


211-0541-00 




2 


SCREW, 6-32 xV 4 inch, 100*^ csk, FHS 


-43 


407-0472-00 




1 


BRACKET, CRT shield bottom 








- 


mounting hardware: (not included w/bracket) 


-44 


211-0541-00 




2 


SCREW. 6-32 X 1/4 inch, 100** csk, FHS 



7-2 



®! 




Mechanical Parts List — Type 564B 



FIG. 1 



Fig. & 
Index 
No. 


Tektronix 
Part No. 


Serial/Model 

Eff 


No. 

Disc 


Q 

t 

y 


1-45 


136-0264-00 






3 


-46 


211-0504-00 






2 


-47 


210-0457-00 






2 


-48 


337-1021-01 






1 


-49 


211-0590-00 






4 



-50 








1 


-51 


352-0044-00 






1 


-52 


211-0148-00 






1 




210-0586-00 






1 


-53 


343-0172-00 






1 


-54 


175-0588-00 






1 




175-0641-00 






1 




175-0706-00 






1 




175-0717-00 






1 




175-0642-00 






1 




131-0049-00 






1 


-55 


358-0215-00 






1 


-56 


343-0138-00 






1 


-57 


343-0123-01 






2 


-58 


21 1 -0599-00 






2 




220-0444-00 






2 


-59 


211-0590-00 






4 


-60 


343-0171-01 






1 


-61 


343-0123-01 






1 


-62 


211-0146-00 






1 


-63 


390-0046-00 


BOlOlOO 


B099999 


2 




390-0046-02 


B1 00000 




2 




214-0361-00 


BOlOlOO 


B099999 


2 


-64 


214-0400-00 






1 


-65 


358-0218-00 






1 


-66 


387-0871-00 






1 


-67 


387-0804-00 






1 


-68 


220-0486-00 






1 




386-1151-00 


B 100000 




2 




386-0227-00 


B1 00000 




2 




214-0604-00 


B1 00000 




2 




214-0603-01 


B1 00000 




2 


-69 


390-0053-00 






1 


-70 


212-0075-00 






4 


-71 


344-0111-00 






2 



FRONT fconf) 



Description 

12 3 4 5 



SOCKET, graticule light 

mounting hardware for each: (not included w/socket) 
SCREW, 6-32 X V 4 inch, PHS 
NUT, keps, 6-32 x Vu >nch 

SHIELD, CRT 

mounting hardware: (not included w/shield) 

SCREW, 6-32 X V 4 inch, PHS 



COIL 

mounting hardware: (not included w/coil) 
HOLDER, coil 

SCREW, 4-40 X inch, PHS, non-magnetic 
NUT, keps, 4-40 x V 4 inch 



CLAMP, CRT rear 
CRT LEAD, striped orange 
CRT LEAD, brown 
CRT LEAD, red 
CRT LEAD, green 
CRT LEAD, blue 
each lead includes: 

CONNECTOR 

BUSHING, horseshoe-shaped 
CLAMP, CRT retainer, black 
CLAMP, retainer, CRT holder 
SCREW, 6-32 X V 4 inch Filister HS 
NUT, square, 6-32 
SCREW, 6-32 X V 4 inch, PHS 
CLAMP, CRT retainer, tapped 
CLAMP, CRT retainer 
SCREW, 4-40x1.312 inch, Filister HS 
CABINET SIDE 
CABINET SIDE 

each cabinet side includes: 

ASSEMBLY, latch 
assembly includes: 

PIN, securing, index 
BUSHING, plastic, latch bearing 
PLATE, latch index 
PLATE, latch locking 
NUT, push-on 
PLATE, locking 
PLATE, index, plastic 
SPRING 
PIN, securing 
CABINET BOnOM 

mounting hardware: (not included w/cabinet) 
SCREW, 8-32 X V 4 inch, THS 



CLIP, CRT lead 



© 



7-3 





Mechanical Parts List — Type 564B 



FIG. 1 FRONT (cont) 



Fig. & 






Q 




Index 

No. 


Tektronix 
Part No. 


Serial/Model No. 
Eff Disc 


t 

y 1 2 3 4 5 


Description 



1-72 


366-0225-00 


-73 


213-0020-00 




210-0940-00 

210-0590-00 


-74 


131-0642-00 


-75 

-76 

-77 


211-0147-00 

210-0801-00 

210-0586-00 



-78 


260-0971-00 


-79 


210-0012-00 




210-0840-00 


-80 


210-0590-00 



-81 260-0645-00 



210 - 0012-00 
210-0840-00 
-82 210-0590-00 





426-0568-00 


XBl 80000 




-83 


366-1049-00 


BOlOlOO 


B 179999 




366-1161-23 


B 180000 




-84 


366-1050-00 


BOlOlOO 


B 179999 




366-1161-24 


B1 80000 




-85 


366-1051-00 


BOlOlOO 


B1 79999 




366-1161-25 

262-0857-00 


B1 80000 






670-0604-00 






-86 


388-1027-00 






-87 


260-1009-00 






-88 


361-0228-00 






-89 


179-1324-00 






-90 


407-0476-00 






-91 


211-0145-00 

210-1001-00 






-92 


210-0586-00 






-93 


220-0413-00 







1 KNOB, gray— LEVEL 
knob includes: 

1 SCREW, set, 6-32 x Vg inch, HSS 
1 RESISTOR, variable 

mounting hardware; (not included w/resistor) 
1 WASHER, flat, V4 IDxVg inch OD 
1 NUT, hex., yg-32 x inch 



1 ASSEMBLY, wall band 

mounting hardware: (not included w/assembly) 
3 SCREW, 4-40 x V, inch, PHS 
3 WASHER, flat, #5S x inch OD 
3 NUT, keps, 4-40 x V4 inch 



1 SWITCH, push— LOCATE 

mounting hardware: (not included w/switch) 

1 LOCKWASHER, internal, Vg ID x V2 inch OD 
1 WASHER, flat, 0.390 ID x Vu inch OD 
1 NUT, hex., Vg-32 x inch 



1 SWITCH, push— INTEGRATE 

mounting hardware: (not included w/switch) 
1 LOCKWASHER, internal, Vg ID x Vj inch OD 
1 WASHER, flat, 0.^390 ID x inch OD 
1 NUT, hex., Vg-32 x V 16 inch 



6 FRAME, pushbutton 
2 KNOB, gray— STORE 
2 PUSHBUTTON— STORE 
2 KNOB, gray— ENHANCE 
2 PUSHBUTTON— ENHANCE 
2 KNOB, gray— ERASE 
2 PUSHBUTTON— ERASE 

1 ASSEMBLY, Interface switch 

assembly includes: 

2 ASSEMBLY, circuit board 

each assembly includes: 

1 BOARD, circuit 

1 SWITCH, push— STORE, ENHANCE, ERASE 

3 SPACER, square 

1 CABLE HARNESS 

1 BRACKET 

4 SCREW, sems, 4-40 x 1 inch 

4 WASHER, flat, 0.125 ID x .250 inch OD 
4 NUT, keps, 4-40 x V4 inch 

mounting hardware: (not included w/assembly) 
3 NUT, hex., 4-40 x 0.562 inch long 



® 



7-4 




Mechanical Parts List — Type 564B 



FIG. 



Fig. & 
Index 
No. 


Tektronix 
Part No. 


Serial/Model No. 
Eff Disc 


Q 

t 

y 


2-1 


441-0791-00 






1 


-2 


211-0538-00 


BOlOlOO 


B1 12699 


4 




211-0541-00 


B1 12700 




4 


-3 


212-0004-00 


BOlOlOO 


B1 12699 


5 




212-0004-00 


B1 12700 




2 




212-0001-00 


B1 12700 




3 


-4 


210-0457-00 


BOlOlOO 


B081089X 


4 


-5 


210-0458-00 






5 



-6 


670-0610-00 


BOlOlOO 


B1 39999 


1 




670-0610-01 


B1 40000 


B1 69999 


1 




670-0610-02 


B1 70000 


B1 89999 


1 




670-0610-03 


B 190000 


B260543 


1 




670-0610-04 


B260544 




1 




388-1031-00 


BOlOlOO 


B 139999 


1 




388-1031-01 


B 140000 




1 


-7 


131-0633-00 






47 


-8 


136-0183-00 






7 


-9 


136-0220-00 






9 


-10 


136-0235-00 






4 


-11 


343-0043-00 






1 


-12 


344-01 54-00 






2 


-13 


211-0.^01-00 






2 


-14 


384-0519-00 






2 




211-0507-00 






1 


-15 


344-0132-00 






3 


-16 


213-0088-00 






3 



-17 


358-0215-00 


3 


-18 




1 


-19 


210-0046-00 


1 


-20 


210-0583-00 


1 



-21 


129-0072-00 


1 


-22 


361 -0007-00 


1 


-23 


131-0126-00 


1 


-24 


131-0148-00 


2 


-25 


211-0016-00 


2 


-26 


166-0030-00 


2 


-27 


210-0586-00 


2 



2 REAR 



Description 

1 2 3 4 5 



CHASSIS, power 

mounting hardware: (not included w/chassis) 

SCREW, 6-32 inch, 100° csk, FHS 

SCREW, 6-32 xV4 inch, 100° csk, FHS 
SCREW, 8-32 X inch, PHS 

SCREW, 8-32 X inch, PHS 

SCREW, 8-32 X inch, PHS 
NUT, keps, 6-32 x Vi6 inch 
NUT, keps, 8-32 x’V 32 inch 



ASSEMBLY, circuit board— POWER SUPPLY 
ASSEMBLY, circuit board— POWER SUPPLY 
ASSEMBLY, circuit board— POWER SUPPLY 
ASSEMBLY, circuit board— POWER SUPPLY 
ASSEMBLY, circuit board— POWER SUPPLY 
assembly includes: 

BOARD, circuit 
BOARD, circuit 
CONNECTOR, pin, round 
SOCKET, transistor, 3 pin 
SOCKET, transistor, 3 pin 
SOCKET, transistor, 6 pin 
CLAMP, neon bulb 
HOLDER, fuse 

mounting hardware: (not included w/assembly) 

SCREW, sems, 6-32 x Vu inch, PHB 

ROD, spacing, V4 x inch 

SCREW, 6-32 x Vi, inch, PHS 

CLIP, circuit board 

SCREW, thread forming, #4 x V4 inch, PHS 



BUSHING, plastic, horseshoe-shaped 
RESISTOR, variable 

mounting hardware: (not included w/resistor) 
LOCKWASHER, internal, 0.261 ID x 0.400 inch OD 
NUT, hex., 1/4-32 X Vu inch 

POST, test point 

mounting hardware: (not included w/post) 

SPACER, plastic, 0.188 inch long 

CONNECTOR, coaxial, 1 contact, BNC, w/hardware 
CONNECTOR, 24 contact, female 

mounting hardware for each: (not included w/connector) 

SCREW, 4-40 X Va inch, RHS 

SPACER 

NUT, keps, 4-40x74 inch 



REV. D APR. 1975 



7-5 




Mechanical Parts List — Type 564B 



FIG. 2 REAR (conf; 

Fig. & Q 

Index Tektronix Serial/Model No. t p. . . 

No. Part No. Eff Disc y ^ 2 3 4 5 Description 



2-28 




4 


-29 


211-0588-00 


2 


-30 


432-0048-00 


1 


-31 


386-0254-00 


1 


-32 


210-0457-00 


2 


-33 


200-0259-00 


3 


-34 




1 


-35 


211-0534-00 


2 


-36 


386-0253-00 


1 


-37 


210-0457-00 


2 


-38 


204-0279-00 


1 


-39 


210-0407-00 


2 


-40 


200-0704-00 


1 


-41 


352-0102-00 


2 


-42 


213-0088-00 


2 


-43 


200-0176-00 


1 


-44 


200-0608-00 


1 


-45 




1 


-46 


213-0044-00 


2 


-47 


260-0450-00 


1 


-48 


210-0406-00 


2 


-49 


337-0971-00 


1 


-50 


211-0504-00 


2 


-51 


337-1025-00 


1 


-52 


212-0004-00 


2 


-53 


210-0458-00 


2 




211-0538-00 


1 


-54 


210-0457-00 


1 



CAPACITOR 

mounting hardware for each: (not included w/capactor) 

SCREW, 6-32 X V 4 inch, HSS 

BASE, plastic 

PLATE, fiber, large 

NUT, keps, 6-32 X Vu inch 



COVER, capacitor, plastic, 1 .365 diameter x inch 
CAPACITOR 

mounting hardware: (not included w/capacitor) 
SCREW, sems, 6-32 x Vu inch, PHS 
PLATE, metal, small 
NUT, keps, 6-32 x inch 

BODY, voltage selector 

mounting hardware: (not included w/body) 

NUT, hex., 6-32 x V 4 inch 

COVER, voltage selector 
cover includes: 

HOLDER, fuse, plastic 

mounting hardware: (not included w/holder) 
SCREW, thread forming, #4 x ’/t inch, PHS 

COVER, boot 
COVER, variable resistor 
THERMAL CUTOUT 

mounting hardware: (not included w/thermal cutout) 
SCREW, thread forming, 5-32 x V 16 inch, PHS 

SWITCH, slide— CRT CATHODE SELECTOR 
mounting hardware: (not included w/switch) 

NUT, hex., 4-40 xVi 6 inch 

SHIELD, high voltage 

mounting hardware: (not included w/shield) 

SCREW, 6-32 X V 4 inch, PHS 



SHIELD, plug-in divider 

mounting hardware; (not included w/shield) 

SCREW, 8-32 xVi, inch, PHS 

NUT, keps, 8-32 x^V 32 inch 

SCREW, 6-32 xVw inch, 100^ csk, FHS 

NUT, keps, 6-32 x inch 



Ca) 



7-6 




Mechanical Parts List — Type 564B 



FIG. 2 REAR (confj 

Fig. & Q 

Index Tektronix Serial/Model No. t 

No. Part No. Eff Disc y 12345 



Description 



2-55 348-0031-00 

-56 348-0055-00 

-57 348-0056-00 
-58 348-0063-00 

-59 348-0064-00 

-60 348-0067-00 

-61 348-0115-00 

-62 351-0038-00 



-63 211-0541-00 



-64 351-0052-00 

-65 351-0058-00 

-66 380-0139-00 



211- 0538-00 

-67 210-0457-00 

212- 0004-00 

-68 210-0458-00 



-69 385-0034-00 



-70 213-0068-00 



-71 385-0129-00 



-72 213-0054-00 



-73 



-74 211-0510-00 

-75 386-0143-00 

-76 210-0935-00 

-77 210-0803-00 

-78 210-0202-00 

-79 210-0457-00 



-80 386-1420-00 

■81 



-82 213-0045-00 



-83 210-0204-00 



-84 213-0044-00 



6 GROMMET, plastic, V 32 inch diameter 

1 GROMMET, plastic, V 4 inch diameter 

1 GROMMET, plastic, Ve inch diameter 

2 GROMMET, plastic, % inch diameter 

1 GROMMET, plastic, Vs inch diameter 

1 GROMMET, plastic, V^ inch diameter 

2 GROMMET, plastic 

2 GUIDE, plug-in 

mounting hardware for each: (not included w/guide) 
2 SCREW, 6-32x 74 inch, lOO** csk, FHS 



3 GUIDE, shoe, I 2 V 32 inches long 
1 GUIDE, shoe, 87s inches long 

1 HOUSING, plug-in 

mounting hardware: (not included w /plug-in) 
3 SCREW, 6-32 xVi 6 inch, 100" csk, FHS 
3 NUT, keps, 6-32 x Vu inch 

2 SCREW, 8-32 xVi 6 inch, PHS 
2 NUT, keps, 8-32x^732 inch 



1 ROD, plastic, Vi^ inch diameter x 74 inch w/pin 
mounting hardware: (not included w/rod) 

1 SCREW, thread cutting, 6-32 x Vu inch, 100® csk, FHS 



1 ROD, plastic, Vu diameter xlVa inches 
mounting hardware: (not included w/rod) 

1 SCREW, thread cutting, 6-32 x Vi^ inch, PHS 



1 TRANSISTOR 

mounting hardware: (not included w/transistor) 

2 SCREW, 6-32 x Vs inch, PHS 

1 PLATE, mica insulator 

2 WASHER, fiber, 0.140 ID x 0.375 inch OD 
2 WASHER, flat, 0.150 IDxVs inch OD 

1 LUG, solder, SE #6 

2 NUT, keps, 6-32 x Vu inch 



1 PLATE, sub-panel rear 
1 COIL 

mounting hardware: (not included w/coil) 
1 SCREW, self-tapping, 4-40 x Vu inch, PHS 



2 LUG, solder, DE #6 

mounting hardware for each: (not included w/lug) 
1 SCREW, thread forming, 5-32 x Vu inch, PHS 



7-7 




Mechanical Parts List — Type 564B 



FIG. 2 REAR fconfj 

Fig. & Q 

Index Tektronix Serial/Model No. t . . 

No. Part No. Eff Disc y ^ , 3 4 5 Description 



2-85 


214-1049-00 


BOlOlOO 


B049999 


1 




214-1049-02 


B050000 




1 


-86 


212-0076-00 


BOlOlOO 


B049999 


4 




212-0033-00 


B050000 




4 


-87 


200-0692-00 






3 


-88 


213-0166-00 






1 




348-0002-00 


XB060000 




1 


-89 








3 


-90 


386-0978-00 






1 


-91 


213-0183-00 






1 


-92 


136-0280-00 






3 


-93 


211-0149-01 


BOlOlOO 


B049999 


2 




211-0038-00 


B050000 




2 


-94 


210-0586-00 






2 


-95 


200-0669-00 






1 


-96 


213-0185-00 






1 




348-0002-00 


XB060000 




1 


-97 








1 


-98 


386-0143-00 






1 


-99 


213-0183-00 






1 


-100 


136-0270-00 






1 


-101 


211-0149-01 


BOlOlOO 


B049999 


2 




211-0038-00 


B050000 




2 


-102 


210-0586-00 






2 


-103 


134-0067-00 






4 


-104 


136-0089-00 






1 


-105 


211-0013-00 






4 


-106 


210-0586-00 






4 


-107 


161-0049-00 






1 


-108 


358-0161-00 






1 


-109 


348-0078-00 


BOlOlOO 


B010119 


4 


-no 


348-0079-00 


BOlOlOO 


B010119 


4 




348-0191-00 


B010120 




4 


-111 


212-0082-00 






1 



HEAT SINK 
HEAT SINK 

mounting hardware; (not included w/heat sink) 

SCREW, 8-32 xlV4 inches, PHS 
SCREW, 8-32 X 3/4 inch, PHS 

COVER, transistor 

mounting hardware for each: (not included w/cover) 
SCREW, thread forming, #6x075 inch, PHS 
GROMMET, rubber, 1/4 inch diameter (not shown) 

TRANSISTOR 

mounting hardware for each: (not included w/transistor) 
PLATE, mica insulator 

SCREW, thread forming, #6x0.50 inch, PHS 



SOCKET, transistor 

mounting hardware for each: (not included w/socket) 
SCREW, machine, 4-40x0.312 inch, 100° csk, FHS 
SCREW, 4-40 xVi^ inch, 100° csk, FHS 
NUT, keps, 4-40 x V4 inch 

COVER, transistor 

mounting hardware: (not included w/cover) 

SCREW, thread forming, #6 x 0.625 inch 
GROMMET, rubber, V4 inch diameter (not shown) 

TRANSISTOR 

mounting hardware: (not included w/transistor) 

PLATE, mica 

SCREW, thread forming, #6x0.50 inch, PHS 



SOCKET, transistor 

mounting hardware: (not included w/socket) 
SCREW, machine, 4-40x0.312 inch, 100° csk, FHS 
SCREW, 4-40 x Via inch, 100° csk, FHS 
NUT, keps, 4-40 x 74 inch 



PLUG, nylon, gray 
SOCKET, 9 pin 

mounting hardware: (not included w/socket) 
SCREW, 4-40 X Va inch, RHS 
NUT, keps, 4-40 xVi6 inch 



CORD, power 
BUSHING, strain relief 
FOOT, body, cord holder 
FOOT, cap 
FOOT, cabinet 

mounting hardware for each; (not included w/foot) 
SCREW, 8-32 X 1 1/4 inches, PHS 



7-8 



© 




Mechanical Parts List — Type 564B 



Fig. & 
Index 
No. 


Tektronix 
Part No. 


Serial/Model No. 
Eff Disc 


FIG. 2 
Q 

t 

y 


REAR Icont) 

Description 

1 2 3 4 5 


2-112 


381-0213-00 






1 


BAR, top support 










- 


bar includes: 


-113 


367-0011-01 






1 


HANDLE 


-114 


343-0145-00 






1 


CLIP, chrome 










- 


mounting hardware; (not included w/bar) 


-115 


381-0073-00 






2 


BAR, Vi6 X 72 X 1 72 inches 


-116 


212-0067-00 






4 


SCREW, 8-32 X Vs inch, THS 




621-0433-00 


BOlOlOO 


B209999 


1 


ASSEMBLY, High Voltage 




621-0433-01 


B210000 




1 


ASSEMBLY, High Voltage 










- 


assembly includes: 


-117 


380-0115-00 






1 


HOUSING 


-118 


214-0931-00 


BOlOlOO 


B059999X 


2 


RETAINER, component 




346-0032-00 


BOlOlOO 


B059999X 


1 


STRAP, mousetail, rubber (not shown) 


-119 


166-0319-00 






3 


SLEEVE, plastic 


-120 


670-0607-00 






1 


ASSEMBLY, circuit board (lower) 










- 


assembly includes; 




388-1030-00 






1 


BOARD, circuit 










- 


mounting hardware: (not included w/assembly) 




211-0040-00 






4 


SCREW, 4-40 X 74 inch, BH plastic 


-121 


670-0609-00 






1 


ASSEMBLY, circuit board (upper 










- 


assembly includes: 




388-1029-00 






1 


BOARD, circuit 










- 


mounting hardware: (not included w/assembly) 


-122 


361-0137-00 






4 


SPACER 


-123 


211-0040-00 






4 


SCREW, 4-40 — 74 inch, BH plastic 


-124 


200-0714-00 






1 


COVER 










- 


mounting hardware: (not included w/cover) 


-125 


211-0529-00 






2 


SCREW, 6-32 X 1 74 inches, PHS 


-126 


211-0510-00 






1 


SCREW, 6-32 X Vg inch, PHS 




136-0340-00 


BOlOlOO 


B1 09999 


1 


SOCKET, CRT, w/cable 




136-0340-01 


B1 10000 




1 


SOCKET, CRT, w/cable 










- 


socket includes: 


-127 


136-0304-00 


BOlOlOO 


B1 09999 


1 


SOCKET, CRT 




136-0304-02 


B1 10000 




1 


SOCKET, CRT 




131-0371-00 






9 


CONNECTOR, single contact 


-128 


200-0917-00 


BOlOlOO 


B1 09999 


1 


COVER, CRT socket 




200-0917-01 


B1 10000 




1 


COVER, CRT socket 


-129 


337-1046-01 


BOlOlOO 


B1 09999 


1 


SHIELD, CRT socket 




337-1199-01 


B1 10000 




1 


SHIELD, CRT socket 


-130 


367-0095-00 


BOlOlOO 


B1 09999 


1 


HANDLE, CRT socket 




367-0117-00 


B1 10000 




1 


HANDLE, CRT socket 




343-0235-00 


XBl 10000 




1 


CLAMP, CRT socket 


-131 


122-0118-00 






2 


ANGLE, bottom rail 










- 


mounting hardware for each: (not included w/angle) 


-132 


212-0023-00 






2 


SCREW, 8-32 X Vg inch, PHS 


-133 


212-0067-00 






2 


SCREW, 8-32 X Ve inch, THS 




210-0458-00 






4 


NUT, keps, 8-32x^732 inch 


-134 


337-0889-00 






1 


SHIELD, high voltage 










- 


mounting hardware: (not included w/shield) 




210-0457-00 






2 


NUT, keps, 6-32 x Vu inch 




Mechanical Parts List — Type 564B 



FIG. 2 REAR fconfj 

Fig. & Q 

Index Tektronix Serial/Model No. t . . 

No. Part No. Eff Disc y 1334 5 Description 



2-135 348-0052-00 






4 


-136 212-0071-00 






2 


-137 210-0458-00 






2 


-138 






1 


-139 210-0812-00 






4 


-140 212-0522-00 






4 


-141 220-0410-00 






4 


-142 200-0900-00 






1 


-143 407-0465-00 






1 


-144 212-0004-00 






2 


212-0070-00 






2 


-145 386-1423-00 






1 


213-0124-00 


BOlOlOO 


B1 12469 


1 


213-0104-00 


B1 12470 




1 


-146 






1 


-147 211-0553-00 






1 


-148 210-0601-00 






1 


-149 210-0478-00 






1 


211-0507-00 






1 


-150 214-1104-00 






1 


-151 211-0511-00 






1 


-152 210-0803-00 






2 


-153 210-0457-00 






1 


-154 343-0004-00 






1 


-155 211-0511-00 






1 


210-0803-00 






1 


-156 210-0863-00 






1 


-157 210-0457-00 






* 


-158 124-0162-00 






1 


-159 355-0046-00. 






1 


-160 361-0007-00 






1 



FOOT, rubber 

mounting hardware for each: (not included w/foot) 
SCREW, 8-32 X 1 inch, FIL HS 
NUT, keps, 8-32 X 11/32 inch 



TRANSFORMER 
transformer includes: 

WASHER, fiber, #10 
SCREW, 10-32x21/2 inches, HHS 
mounting hardware: (not included w/transformer) 
NUT, keps, 10-32x3/8 inch 



COVER, terminal 
BRACKET, transformer 

mounting hardware: (not included w/bracket) 

SCREW, 8-32 X Vu inch, PHS 

SCREW, 8-32 xV,^ inch, 100** csk, FHS 



PANEL, rear 

mounting hardware: (not included w/ panel) 
SCREW, sheet metal, # 6 x 1/4 inch, PHS 
SCREW, thread forming, 6-32 x 3/3 inch, THS 



RESISTOR 

mounting hardware: (not included w/resistor) 

SCREW, 6-32 X 1 1/2 inches, RHS 

EYELET 

NUT, hex., Vux 31/32 inch long 
SCREW, 6-32 X inch, PHS 



INSULATOR 

mounting hardware: (not included w/insulator) 
SCREW, 6-32 X 1/2 inch, PHS 
WASHER, flat, 0.150 ID x 2/3 inch OD 
NUT, keps, 6-32 x inch 



CLAMP, cable, plastic, Vi 6 inch 
mounting hardware: (not included w/clamp) 

SCREW, 6-32 X 1/2 inch, PHS 
WASHER, flat, 0.150 ID x 2/3 inch OD 
WASHER, D-shaped, 0.191 ID x 2*44x2344 inch long 
NUT, keps, 6-32 x inch 



STRIP, ceramic, inch h, w/4 notches 
strip includes: 

STUD, plastic 

mounting hardware: (not included w/strip) 
SPACER, plastic, 0.188 inch long 



7-10 




Mechanical Parts List — Type 564B 



FIG. 2 



Fig. & 








Q 


Index 


Tektronix 


Serial/Model 


No. 


t 


No. 


Part No. 


Eff 


Disc 


y 


2-161 








2 




210 - 0012-00 






1 


-162 


210-0429-00 






1 


-163 


358-0010-00 






1 



-164 


441-0790-00 


1 


-165 


211-0538-00 


1 



-166 


670-0611-00 


1 




388-1032-00 


1 


-167 


131-0633-00 


41 


-168 


136-0183-00 


6 


-169 


136-0220-00 


6 


-170 


211-0601 -00 


1 


-171 


129-0098-00 


1 


-172 


213-0045-00 


1 


-173 


344-0131-00 


5 


-174 


213-0088-00 


5 



-175 


343-0002-00 


2 


-176 


210-0863-00 


1 




210-0457-00 


1 



-177 


343-0088-00 


BOlOlOO 


B060400X 


2 


-178 


343-0089-00 


BOlOlOO 


B060400X 


3 




343-0213-00 


XB060400 




1 


-179 


131-0610-00 


BOlOlOO 


B1 29999 


4 




344-0095-00 


B1 30000 




2 


-180 


179-1321-00 


BOlOlOO 


B089999 


1 




179-1321-01 


B090000 




1 


-181 


131-0371-00 






45 


-182 


179-1322-00 






1 


-183 


214-0768-00 






8 



REAR fconf] 



Description 

1 2 3 4 5 



RESISTOR/ variable 

mounting hardware for each: (not included w/resistor) 
LOCKWASHER/ external, Ve IDxVj inch OD 
NUT, hex., Vs-32 x V 2 x 1 inches 
BUSHING 



CHASSIS, storage 

mounting hardware: (not Included w/chassis) 
SCREW, 8-32 xVu inch, 100" csk, FHS 



ASSEMBLY, circuit board—STORAGE 
assembly includes: 

BOARD, circuit 
CONNECTOR, pin, round 
SOCKET, transistor, 3 pin 
SOCKET, transistor, 3 pin 
mounting hardware: (not included w/assembly) 
SCREW, sems, 6-32 x Vu inch, PHB 
POST 

SCREW, self-tapping, 4-40 x inch, PHS 
CLIP, circuit board 

SCREW, thread forming, #4 x V 4 inch, PHS 



CLAMP, cable, plastic, inch 

mounting hardware for each: (not included w/clamp) 
WASHER, D-shaped, 0.191 ID x ^V 64 x ^V 64 inch long 
NUT, hex., 6-32 x inch 



CLAMP, cable, plastic, small 
CLAMP, cable, plastic, large 
CLAMP, cable, plastic 
CONNECTOR, ground clip 
CLIP, grounding 
CABLE HARNESS, power 
CABLE HARNESS, power 
cable harness includes: 
CONNECTOR, single contact 
CABLE HARNESS, line voltage selector 
cable harness includes: 

CONTACT 



© 



7-n 




SECTION 8 
DIAGRAMS 



The following special symbols are used on the diagrams: 




Screwdriver adjustment 



External accessible control or 
connector 




Clockwise control rotation in direc- 
tion of arrow 

Refer to indicated diagram 

Blue line encloses components loca- 
tion on circuit board 

Connection soldered to circuit board 



IMPORTANT 

VOLTAGE AND WAVEFORM CONDITIONS 

Circuit voltages measured with an electronic voltmeter, having an 
input resistance of 100 M^2, ±5®/o, and a meter accuracy of ±2%. 
Voltages are measured with respect to chassis ground unless other- 
wise noted. If a 20,000 ^2/volt VOM is used, the effects of circuit loading 
at high impedance points must be taken into consideration. 

Waveforms shown are actual photographs taken with a Tektronix 
Oscilloscope Camera System and Projected Graticule. 

Voltages and waveforms on the schematics (shown in blue) are 
not absolute and may vary between instruments because of component 
tolerances (or possible circuit loading of the voltmeter). 

The test oscilloscope used had the following characteristics: Mini- 
mum deflection factor, 0.1 volts/division using a lOX probe; frequency 
response, DC to 10 MHz. DC input coupling was used. 



(Cont on next diagram) 




Voltage readings and waveforms were obtained under the follow 


ing conditions unless otherwise noted on the individual diagrams: 

TYPE 564B 


INTENSITY 


Counterclockwise 


FOCUS 


Centered 


SCALE ILLUM 


Counterclockwise 


ASTIGMATISM 


Centered 


CALIBRATOR 


40 V 


STORE (upper) 


Store (in) 


ENHANCE (either) 


On (in) 


Enhance LEVEL 


Counterclockwise 


CRT CATHODE SELECTOR NORM 

Amplifier Unit 


Position 


Centered 


Mode 


Normal (Channel 1) 


Volts/Div 


5 


Input Coupling 


GND 

Time-Base Unit 


Position 


Centered 


Time/Div 


1 ms 


Sweep Mode 


Normal 


Level 


Free run (clockwise) 


Triggering Source 


Internal 


Triggering Slope 


+ 


Triggering Coupling 


Auto 


Line voltage 


115 VAC 


Signal Applied 


None 





* RETURNED TO COMMON GROUND POINT 
NEAR C9T. 



-t" TVPE 5<&4-B 



RIGHT (HORIHONTAL) 
CONNECTOR 




SEE PARTS LIST FOR EARLIER 
VALUES AND SERIAL NUMBER 
RANGES OF PARTS MARKED 
WITH BLUE OUTLINE. 



PLUG-IN 



GG9 

CONNECTORS<$> 





1 kHz CALIBRATOR 






BOARD 



SEE PARTS LiST FOR EARLIER 
VALUES AND SERIAL NUMBER 
RANGES OF PARTS MARKED 
WITH BLUE OUTLINE. 



DIACjRAMS 

ppL.r 

.ONINECTORS 

IRCUIT 




+300V 





CRT CIRCUIT 




FIG. 3 STANDARD ACCESSORIES 








Fig. & 

Index Tektronix 
No. Part No. 



Q 

Serial/Model No. t 

Eff Disc y 1 2 3 4 5 



Description 



3-1 012-0087-00 

-2 012-0092-00 

070-0804-00 



1 CORD, patch 

1 JACK, BNC-post 

2 MANUAL, instruction (not shown) 



REV. C APR. 1975 



MECHANICAL PARTS LIST — TYPE 564B