Tektronix Manual: 564B

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

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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