Tektronix 067-0916-00 Service and user manual

Tfektronix

COMMITTED TO EXCELLENCE

Tektronix, Inc.
P.0. Box 500
Beaverton, Oregon

070-3643-00

067-0916-00

VIDEO AMPLITUDE

CALIBRATION FIXTURE

INSTRUCTION

97077

Serial Number

MANUAL

First Printing—JAN 1981

Copyright © 1981 Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in
any form without the written permission of Tektronix, I nc.

Products of Tektronix, Inc. and its subsidiaries are
covered by U.S. and foreign patents and/or pending
patents.

TEKTRONIX, TEK, SCOPE-MOBILE, and
istered trademarks of Tektronix, Inc. TELEQUIPMENT is

a registered trademark of Tektronix U.K. Limited.

Printed in U.S.A. Specification and price change

privileges are reserved.

are reg¬

067-0916-00

TABLE OF ©ONTENTS

LIST OF BLLUSTRAT0ONS

LIST OF TABLES

OPERATORS SAFETY SUGARY

SERVICING SAFETY SUMMARY.

Section 1 SPECIFICATION

Section 2 OPERATING INSTRUCTIONS

.

Installation and Removal Instructions . . 2-1
Operating Considerations.
Controls, Connectors and Indicator
Lights.
Applications.

.

W ARNING

.

j

Page

Page

ii

iii

iv

V

1-1

2-1

2-2

2-4

2-6

Section 5 MAINTENANCE

Preventive Maintenance.

Section 6 OPTIONS.

Section 7 REPLACEABLE ELECTRICAL PARTS 7-1

Section 8 DIAGRAMS & CIRCUIT BOARD

Troubleshooting Aids.
Troubleshooting Techniques.
Parts Ordering and Replacing.
Customizing.
Using the Rear Interface Connectors . . 5-5

Parts Ordering Information.
Special Notes and Symbols.
Abbreviations.
Cross Index—Mfr. Code Number to
Manufacturer.
Electrical Parts List.

ILLUSTRATIONS

.

5-1
5-1
5-1
5-2
5-5
5-5

6-1

7-1
7-1
7-1

7-2
7-3

THE FOLLOWING SERVICE INSTRUCTIONS ARE FOR
USE BY QUALIFIED PERSONNEL ONLY. TO AVOID

PERSONAL INJURY, DO

VICING OTHER THAN THAT CONTAINED IN OPERAT¬
ING INSTRUCTIONS UNLESS YOU ARE QUALIFIED
TO DO SO.

Section 3 THEORY OF OPERATION

Section 4 CALIBRATION PROCEDURE

Logic Display /y.
Display and DAuDiagram

Performance Check Procedure.
Procedure.
Adjustment Procedure.
Procedure.
Preset Levels.

NOT PERFORM ANY SER¬

.

.

Section 9 REPLACEABLE MECHANICAL

3 1
3-1
3-5

4 1
4-1
4-2
4-6
4-6
4-7

APPENDIX APPENDIX A

CHANGE INFORMATION & TEST EQUIPMENT

PARTS
Parts Ordering Information.
Special Notes and Symbols.
Figure and Index Numbers.
Indentation System.
Item Name.
Abbreviations.
Cross Index—Mfr. Code Number to
Manufacturer.
Mechanical Parts List.
Exploded Mechanical Illustration

.

Report of VAC Calibration.

9-1
9-1
9-1
9-1
9-1
9-1
9-1

9-2
9-3

A 1
A-1

LIST OF ILLUSTRATIONS

Fig.
No.

2-1
2-2
2-3

2-4

2-5

2-6

2-7

2-8

2-9
2-10

2-11

2-12
2-13

2-14

2- 15

3- 1
3-2
3-3
5-1
5-2
5-3

Video Amplitude Calibration Fixture
VAC Installation and Removal.
Peak-to-peak Amplitude Distortions.
Controls, Connectors, Indicator Lights,

and Control Group Settings.
Reference waveform shown without
VAC input.

—SYNC offset reference effect on wave¬
form .

+LUM offset reference effect on wave¬
form .
CHR P-P offset reference effect on wave¬

form .

Equipment setup for luminance

measurements.
Luminance measurement using VAC.

Luminance measurement using VAC

(corrected).

Equipment setup for chrominance measure¬

ments.

Chrominance measurement using VAC ....

Chrominance measurement using VAC

(magnified).

VAC setup for waveform monitor display

calibration.

Waveform monitor display of 700.0 mV signal

from VAC.

Logic Clock.

Amplitude Data Clock.
Timebase breakdown.

Semiconductor Basing.

A4 Logic board position for troubleshooting

Rear Interface Connector Assignments. . . . 5-6

2-10

Page

vi
2-1
2-2

2-4

2-6

2-6

2-7

2-7

2-7
2-8

2-8

2-8
2-9

2-9

2-10

3-2
3-3
3-4
5-4
5-5

The following illustrations are located in the diagram

pull-out section.

8-1
8-2
8-3
8-4
8-5
8-6
8-7
8-8

Semiconductor Basing
Adjustment Locations
A4 Logic Board Component Locations
Waveforms for A4 Logic Board
A3 DAC Board Component Locations
A2 Display Board Component Locations
A1 Switch Board Component Locations
Front-Panel Lever Switch Component
Locations

067-0916-00

LIST OF TABLES

Table
No.

1-1

ELECTRICAL CHARACTERISTICS.

1-2

ENVIRONMENTAL CHARACTERISTICS_

1- 3

PHYSICAL CHARACTERISTICS.

2- 1

Accessory Specifications.

2- 2

System Error.

3- 1

DAC output current capabilities.

4- 1

Test Equipment Required.

4-2

Amplitude Tolerance Check.

4-3

Differential Linearity Check.

4-4

Absolute Linearity.

4-5

Preset Test Selections.

4-6

Preset Levels.

4-7

NTSC Color Bars Preset Levels.

4-8

PAL Color Bars Preset Levels.

4-9

PAL M Color Bars Preset Levels.
4- 10
5- 1

5-2
A-1
A-2
A-3

SECAM Color Bars Preset Levels.

RELATIVE SUSCEPTIBILITY TO STATIC
DISCHARGE.
Maintenance Aids.
Amplitude Tolerance Check.
Differential Linearity Check.
Absolute Linearity.

Page

1-2
1-2

1-2
2-3
2-3
3-5
4-1

4-2
4-3
4-4
4-4
4-8
4-8
4-9
4-9

4-10

5-2

5-7
A-1
A-2
A-2

iii

067-0916-00

OPERATORS SAFETY SUMMARY

The general safety information in this part of the summary is
for both operating and servicing personnel. Specific
warnings and cautions will be found throughout the manual
where they apply, but may not appear in this summary.

TERMS

In This Manual

CAUTION statements identify conditions or practices that
could result in damage to the equipment or other property.

WARNING statements identify conditions or practices that
could result in personal injury or loss of life.

As Marked on Equipment

CAUTION indicates a personal injury hazard not immediate¬
ly accessible as one reads the marking, or a hazard to prop¬
erty including the equipment itself.

DANGER indicates a personal injury hazard immediately ac¬
cessible as one reads the marking.

Power Source

This product is intended to operate from dc supplies in a
mainframe whose power source will not apply more than
250 volts rms between the supply conductors or between
either supply conductor and ground. A protective ground
connection by way of the grounding conductor in the power
cord is essential for safe operation.

Grounding the Product

This product is grounded through the grounding conductor
of the power cord of the mainframe. To avoid electrical
shock, plug the mainframe power cord into a properly wired
receptacle before connecting to the product input or output
terminals. A protective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.

Danger Arising From Loss of Ground

Upon loss of the protective-ground connection, all accessi¬
ble conductive parts (including knobs and controls that may
appear to be insulating) can render an electric shock.

SYMBOLS

In This Manual

A

As Marked on Equipment

This symbol indicates where applicable cau¬
tionary or other information is to be found.

DANGER — High voltage.

Protective ground (earth) terminal.

ATTENTION — refer to manual.

Use the Proper Fuse

To avoid fire hazard, use only the fuse of correct type, volt¬
age rating and current rating as specified in the parts list for
your product.

Refer fuse replacement to qualified service personnel.

Do Not Operate in Explosive Atmospheres

To avoid explosion, do not operate this product in an explo¬
sive atmosphere unless it has been specifically certified for
such operation.

Do Not Operate Without Covers

To avoid personal injury, do not operate this product with¬
out covers or panels installed. Do not apply power to the
plug-in via a plug-in extender.

iv

@

067-0916-00

SERVICE SAFETY SUMMARY

FOR QUALIFIED SERVICE PERSONNEL ONLY

Refer also to the preceding Operators Safety Summary.

Do Not Service Alone

Do not perform internal service or adjustment of this prod¬
uct unless another person capable of rendering first aid and
resuscitation is present.

Use Care When Servicing With Power On

Dangerous voltages may exist at several points in this prod¬
uct. To avoid personal injury, do not touch exposed connec¬
tions and components while power is on.

Disconnect power before removing protective panels, sol¬

dering, or replacing components.

Power Source

This product is intended to operate from dc supplies in a
mainframe whose power source will not apply more than
250 volts rms between the supply conductors or between
either supply conductor and ground. A protective ground
connection by way of the grounding conductor in the
mainframe power cord is essential for safe operation.

v

067-0916-00

SSJSG’rtADOOTUNCAUBRATED

OUTPUT

tolerance

PULL 52

PUSH

VARIABLE

DN UP

fon

CAL

067-0«lW»

Video Amplitude Calibration Fixture.

Section 1-067-0916-00

SPECIFICATION!

Introduction

The 067-0916-00 Video Amplitude Calibration Fixture
(VAC) is a high-precision test fixture used in the measure¬
ment of common video test signals, and the calibration of
video test signal generators and waveform monitors. It pro¬
vides a simple means of measuring and calibrating lumi¬
nance and chrominance signals associated with most video
test signals.

A low-impedance output on the VAC provides a precise­amplitude square wave voltage with a resolution of 0.1 mV
and an accuracy of 0.05% from 0 to 999.9 mV peak. The
precision reference voltage is selected either by setting lever
switches of a 4-decade counter on the front panel, or by
selecting preset values for the most common signal element
amplitudes, which are stored in an EPROM. Two front-panel
controls provide for varying the output voltage to determine
the actual test-signal amplitude or percent of deviation. Oth¬
er pushbuttons select the color standards (NTSC, PAL, PAL
M, or SECAM) and other signal parameters such as half
or full amplitude at the output connector.

The video signal to be measured is connected to a 1480­Series Waveform Monitor "A" input. The VAC’s output is
connected to the waveform monitor "B" input. The "A-B"
differential mode of the waveform monitor then permits con¬
venient comparison of signal amplitudes.

The VAC is packaged in a 2-wide TM500 module to take
advantage of existing test gear at most testing and servic¬
ing locations.

When making chrominance
harmonics generated by the subcarrier make peak-to-peak
measurements of the chrominance packets an uncertainty.
To obtain maximum performance from the VAC when mak¬
ing these measurements, a Subcarrier Harmonic Rejection
Filter 015-0407-00 (5 Mhz lowpass) is placed between the
signal generator under test and the waveform monitor. Be¬

cause the 015-0407-00 filter has a 0.6% passband loss, a

0.6% attenuator (011-0134-00) is placed between the VAC
and the waveform monitor, thus compensating for the loss.
Useful but less accurate measurements can be made with¬

out the use of the filter and attenuator.

Performance

The following electrical characteristics are valid only if the
VAC is calibrated at an ambient temperature of 25° ±3°C
and is operated at a normal ambient temperature between
15° and 35°C. Operation over the maximum range of 0° to
50°C may result in reduced amplitude accuracy of ±(0.1%
+ 0.2 mV). Allow a 20-minute warm up period before per¬
forming verification tests.

Conditions

measurements,

odd

Specification—067-0916-00

Characteristics

Output Signal

Front OUTPUT Connector

Rear Interconnect

Amplitude Range
(TOLERANCE disabled)

Amplitude Range
(TOLERANCE enabled)

Offset

VARIABLE Control

Resolution

Risetime

Frequency

NTSC, PAL M

PAL, SECAM

Table 1-1

ELECTRICAL CHARACTERISTICS

Performance Requirements

37.5 fl

o.o

a

0 mV to 999.9 mV

±(0.05% + 0.1 mV)

0 mV to 999.9 mV

±(0.5% + 0.1 mV) + TOLERANCE

reading

0.1 mV

Supplemental Information

Bnc connector located on front panel.

Rear edge connector pins 27A and 28A.

Peak-to-peak square wave
amplitude.

Peak-to-peak square wave
amplitude.

1 mV typical.

2 counts per sec. to 200 counts
per sec.

Less than 1 ^s.

270 Hz nominal.

275 Hz nominal.

Waveform

Half Period

Noise

NTSC

PAL

ENVIRONMENTAL CHARACTERISTICS

Characteristics

Nominal Operating

Temperature

Maximum Operating

Temperature

Storage Temperature

Operating Altitude

Table 1-2

Less than 1 mV

Description

+ 15°C to +35°C

0°C to +50°C

-40°C to +65°C

To 4,572 m (15,000 feet)

Square wave.

9 lines nominal.

11 lines nominal.

0 to 5 MHz.

PHYSICAL CHARACTERISTICS

Length
Width
Height
Net Weight
Net Shipping Weight

Characteristics

Table 1-3

Description

19.49 cm (7.675 inches)

21.40 cm (8.424 inches)

49.72 cm (19.575 inches)

1.38 kg (3.04 lbs)

4.53 kg (10.0 lbs)

Storage Altitude

1-2

To 15,240 m (50,000 feet)

. I

Section 2-067-0916-00

OPERATING INSTRUCTIONS

Installation and Removal Instructions

The VAC is calibrated and ready to use when received. It

operates in any of two compartments of the TEKTRONIX

TM 500 series power modules except the TM 501. Refer to

the power module instruction manual for line-voltage re¬

quirements and power module operation.

Turn the power module off before inserting or remov¬
ing the VAC; otherwise arcing may occur at the rear
interface connectors. Arcing reduces the useful life of

the connectors and damage may be done to the plug¬
in circuitry.

Check for plastic barriers on the interconnecting jacks of

the power module in the selected compartments. If the bar¬
riers do not match the cutouts in the VAC circuit board edge

connector, they may indicate special rear interface connec¬
tions for another type of instrument. Do not insert the plug¬
in until this has been verified by qualified service personnel.

The TM 500 power module MUST have a barrier in¬

stalled between pins 6 and 7 at the standard barrier location

to ensure proper connector alignment: The TM 500 Power

Module may also have an optional barrier between pins 27
and 28 to indicate that the compartment is reserved for
TM 500 plug-ins in the Signal Source family. A barrier in any
other location will preclude insertion of the VAC, because
that barrier would indicate that the compartment has been
reserved for TM 500 plug-ins other than those in the Signal
Source family.

When the units are properly matched, align the VAC with
the upper and lower guides (see Fig. 2-1) or the selected
compartments. Insert the VAC into the compartment and
press firmly to seat the circuit boards in the interconnecting

Fig. 2-1. VAC Installation and Removal.

2028-02A

2-1

/

Operating Instructions—067-0916-00

jacks. The VAC readout should be illuminated when the

power signal switch switch is turned on.

To remove the VAC, turn off the TM 500 Power Module
and pull the release latch, located on the lower left corner of
the VAC, until the connector disconnects from the power
module. The VAC will now slide out of the power module.

OPERATING CONSIDERATIONS

Output Connections

The output of the VAC is designed primarily to operate
as a 37.5 12 voltage source working into an unterminated
15 k 12 loop through input of a waveform monitor. Normally,
the output of a voltage source would be 75 12 into the 15 k!2
loop through and terminated by 75 12. However, with the last
setup mentioned as much as .06% error can easily be accu¬
mulated via cable loss, voltage source tolerances, and
terminator tolerances. Using the 37.512 voltage source,
these errors are elimanated.

Loop Through Inputs

Each loop through input of a waveform monitor or other
equipment introduces return loss errors which are usually
worse at higher frequencies. For best accuracy in gain mea¬
surements, do not connect additional equipment to the oth¬
er input of a loop through input. Instead, terminate at the
input with the Tektronix 011-0102-01 75 12 0.025% precision
terminator. Also, when connecting a signal source to the
waveform monitor, use only the low-loss video cables listed
below. The shorter cable is preferred. Do not use RG59 75 12
cable.

42"

72"

Belden 8281

Belden 8281

Tektronix part number
012-0159-00
Tektronix part number
012-0159-01

Subcarrier Harmonic Rejection Filter and
Attenuator

When measuring chrominance on a video signal, odd
harmonics generated by the subcarrier make total peak-to­peak amplitude measurements an uncertainty as illustrated
in Fig. 2-2. For this reason, always use the Tektronix 015­0407-00 Subcarrier Harmonic Rejection Filter between the
generator under test and the waveform monitor. The filter
will attenuate the odd harmonics approximately 20 dB. The
015-0407-00 filter also has a 0.6% passband loss. This is
compensated by also inserting the 011-0134-00 attenuator
between the VAC and the waveform monitor. The
attenuator cuts the VAC’S output by 0.6%, thus cancelling
the error created by the filter.

Measurement System Accuracy

When making critical measurements on a video signal,
the total specification of the test system should be consid¬
ered. Table 2-1 gives the accessory specifications. Table 2­2 shows the maximum amount of error each instrument and
accessory may introduce in the test system.

2-2

Fig. 2-2. Peak-to-peak Amplitude Distortions.

Operating Instructions—067-0916-00

ACCESSORY SPECIFICATIONS

011-0101-01

015-0407-00

011-0134-00

Terminator 75 ft ±0.025%.

Subcarrier Harmonic Rejection Filter (5 MHz
lowpass) 0.6% ±0.1% attenuation at
50 kHz, 3.58 MHz, and 4.43 MHz.

Attenuator 0.6% ±0.01%; Zin = 37ft,
Zload « oo

SYSTEM ERROR

Source of Error

067-0916-00 VAC

1480 Mod W5F Common-

Mode-Rejection-Ratio

1480 Mod W5F
Frequency Response

011-0102-01
Terminator

Table 2-1

Table 2-2

Luminance

Error

0.05%

0.05%

0.0

0.0125%

Chrominance

Error

0.05%

0.05%

0.5%

0.0125%

Waveform Monitor Requirements

To take full advantage of the VAC’s output accuracy, the
waveform monitor used must also meet special perfor¬
mance specifications. Special attention should be paid to
the common mode rejection ratio and the A-B frequency
response. The frequency response of the waveform monitor
used should be ±0.5% from 50 kHz to 5 MHz in the A-B
mode with no signal on B. The common mode rejection ratio
should be 66 dB from 25 Hz to 50 kHz. The TEKTRONIX
1485R Mod W5F meets these specifications and is recom¬
mended for use with the VAC.

TEKTRONIX 1480-Series waveform monitors before
serial number B070000 had problems turning the
clamp all the way off at certain signal levels. Using the

VAC with one of these waveform monitors before
B070000 may result in a blurred display when making

certain measurements. If a problem is suspected, con¬

tact your local service center and ask for change ref¬

erence M39771.

NOTE

015-0407-00 Filter

011-0134-00
Attenuator

TOTAL ERROR

Not Used

Not Used

0.1125%

0.1%

0.01%

0.7225%

Operating Instructions—067-0916-00

CONTROLS, CONNECTORS, AND

INDICATOR LIGHTS

Refer to Fig. 2-3 for the locations of the controls,

connectors and indicator lights described below.

@

7.5-50, 55-100: Enables the Preset Level switch¬
es to be referenced to the values color coded in
blue or green for any color standard selected
(NTSC, PAL, PAL-M, SECAM). See Table 4-6
for the actual level in mV for each Preset Level
selection.

©

CB LUM, CB R-Y/V D’R, CB B-Y/U D’B: En¬
ables the Preset Level switches to be referenced
to the color bar levels coded in brown for any
color standards selected using REDUCED or

FULL AMP with or without SETUP.

(T) CB I, CB Q: Enables the Preset Level switches

to be referenced to the color levels coded in
brown for the NTSC color standard only, using
REDUCED or FULL AMP with or without
SETUP.

(T) CB CHR: Enables the Preset Level switches to

be referenced to the Color Levels coded in
brown for the NTSC, PAL, or PAL-M color stan¬
dards only, using REDUCED or FULL AMP with

or without SETUP.

(?) FULL AMP/REDUCED: Used with the Preset

Level Switches color coded in brown to select
either full or reduced amplitude Preset Group
settings.

2-4

Operating Instructions—067-0916-00

SETUP: Used with the Preset Level switches
color coded in brown to insert setup when need¬
ed with the Preset Group settings.

CHR P-P or LUM/SYNC: Used for convenience
to free the technician from having to adjust the
vertical position on the waveform monitor when
making chrominance measurements. The CHR

P-P mode shifts the original and chopped double
equally away from the blanking level when the
switched dc amplitude of the VAC is increased.
This offers maximum convenience in matching
the top of one chrominance envelope with the
bottom of the other. The LUM/SYNC mode en¬
ables the + LUM/-SYNC button to control which
way the reference is offset from the blanking
level.

+ LUM/-SYNC: Used for convenience to free

the technician from having to adjust the vertical
position of the waveform monitor when making
luminance measurements. When measuring lu¬
minance levels, which are more likely to be at the
top of the waveform monitor’s screen, -f LUM
enables the reference + offset waveform to
travel downward on the monitor screen as the
switched dc amplitude of the VAC is increased.
When measuring levels below the blanking level,
which would be more toward the bottom of the

wavefrom monitor screen, -SYNC enables the

reference + offset waveform to travel upward
on the monitor screen as the switched dc ampli¬
tude of the VAC is increased.

PRESET/MANUAL: When the PRESET mode is

selected, the OUTPUT of the VAC is referenced
from one of the 500-plus Preset Level selec¬
tions. When the MANUAL mode is selected, the

OUTPUT of the VAC can be manually selected

by using the four-decade Lever Switches on the
front panel of the VAC.

Lever Switches: Four lever switches are com¬
bined to make a four-decade control capable of
changing the amplitude of the switched dc at the
OUTPUT from 000.0 to 999.9 mV peak-to-peak.

(Ijy VARIABLE: A spring-loaded recentering control.

It is used to increase or decrease the switched
dc amplitude of the OUTPUT to any value the
VAC is capable of producing. The rate of change
is proportional to the degree the control is
turned. Turning the control 1/4 turn, the readout
changes slowly, vs. turning the control 1/2 turn
and having the readout change at a faster rate.

(T?) VARIABLE LED: Whenever the VARIABLE con¬

trol is used to change the readout from its preset
reference, an LED located below the control
lights up. The LED will turn off once the preset
selection is changed or the RESET button is
pushed.

@ RESET: The RESET button applies only to the

VARIABLE control. The effect of the VARIABLE
control is canceled and the OUTPUT returns to
the Preset Level reference voltage once the
RESET button has been pushed.

(m) NTSC, PAL, PAL-M, SECAM: Used to set the

Preset Group information to correct reference
voltages for the color standard worked with. See
Tables 4-6 through 4-10 for the actual level in
mV for each Preset Level selection.

TOLERANCE: A switched variable control which
must be pulled out to enable. The TOLERANCE
control can change the OUTPUT by approxi¬
mately ± 3% in reference to the output indicated
on the readout.

(is) OUTPUT: Bnc connector for VAC output of the

switched dc waveform.

\J)

Readout: A red four-digit LED indicating the p-p
amplitude at the OUTPUT connector in mV.
When the TOLERANCE control is enabled, the
readout will flash on and off, indicating the in¬
strument is in an uncalibrated mode. FFF.F will
appear on the readout when an inappropriate

combination of Preset Group and color standard

buttons are selected.

2-5

Operating Instructions—067-0916-00

APPLICATIONS

The VAC was mainly designed for making measurements
of standard video signals. Therefore, the VAC contains
most video test signal amplitudes pre-programmed in mem¬
ory for each video system. This makes it easy for the techni¬
cian to make signal measurements. Instead of looking up
the value needed and dialing it in, the technician need only
select the same parameters that the signal generator is set
for.

Setting Front-Panel Controls

When the VAC is in the PRESET mode, use the following

information to set the front panel controls. Refer to Figure 2-

3 for location of button groups mentioned in the following

information.

System Select.

system being worked with.

Preset Group.

video signal that is being measured. These different "types"
basically fall into three categories; video luminance or levels
not specifically related to color bars (7.5-50, 55-100), color
bar luminance (CB LUM), and color chrominance (CB R-Y/V
D’R, CB B-Y/U D’B, CB Q, CB I, CB CHR).

This selection is determined by the video

This selection is determined by the type of

signal parameter measurements. The reference offset but¬
tons make this "ideal" condition possible, which establishes
consistent signal measurements
waveform monitor used. Figures 2-4 through 2-7 illustrate
the effect of the reference offset buttons when enabled with
respect to the reference signal.

in

reference to the

3643-04

Preset Level.

the Preset Group buttons. The video luminance selections
are outlined in blue and green. The color bar luminance and
color chrominance selections are outlined in brown. The

Preset Level buttons selection is determined by the param¬

eter of the signal being measured.

Amplitude and Setup Selection.

used when measuring video signal parameters that are at

full or reduced amplitudes. SETUP is used in the same

manner.

Reference Offset.

position of the parameter being measured on the waveform
monitor screen. When measuring signals that fall above
blanking, use the +LUM mode, and —SYNC when measur¬
ing signals that fall below blanking. When making
chrominance measurements,
mode.

The purpose of having the reference offset buttons is not
merely for convenience. In most all waveform monitors, the
vertical frequency response changes from the top of the ver¬
tical position range to the bottom. Therefore, it would be
ideal to leave the vertical position in the same place for all

The Preset Level buttons are referenced to

These buttons are

This selection is determined by the

always use the CHR P-P

Fig. 2-4. Reference waveform shown without VAC input.

Fig. 2-5. With the —SYNC reference offset mode enabled the
"Reference + Offset" waveform appears above the "Refer¬
ence" waveform. Measurements are made by matching the ba¬
seline of the "Reference" waveform to a certain parameter of
the "Reference + Offset" waveform that’s lower than its own
baseline (such as sync).

3643-05

2-6

Operating Instructions—067-0916-00

Fig. 2-6. With the + LUM reference offset mode enabled the
"Reference — Offset" waveform appears above the "Refer¬
ence" waveform. Measurements are made by matching the ba¬
seline of the "Reference" waveform to a certain parameter of
the "Reference — Offset" waveform that’s above its own base¬
line (such as the luminance bar shown being measured).

Luminance Measurements

For the following examples, an NTSC composite video

signal is used with a 50 IRE bar.

Standard setup for making luminance measurements
with the VAC is shown in Figure 2-8. Connect the VAC
OUTPUT to the "B" input of the waveform monitor and
leave the loop-through unterminated. The signal generator
is connected to the "A" input of the waveform monitor with

the 012-0159-00 or 012-0159-01 low-loss video cable. Ter¬
minate the "A" loop-through with the 011-0102-01 75

0.025% precision terminator.

Fig. 2-7. With the CHR P-P reference offset mode enabled both
the "Reference + Offset" and the "Reference — Offset" wave¬
forms are shown. Measurements
made of video signals which contain chrominance packets.
The measurement is made by matching the top of the "Refer¬
ence — Offset" waveform with the bottom of the "Reference +
Offset" waveform. This is illustrated here using the burst signal
of each waveform.

in

this mode are usually

Set the VAC front panel controls as follows:
System Select .NTSC

Preset Group .7.5-50
Preset Level.50
Chop Reference.+

Q

Amplitude and.FULL
Setup Select.No

Set the 1485 controls as follows:

Input.A-B

Response.Flat
Volts Full Scale.1.0
DC Restorer.Off

LUM

SETUP

AMP

Fig. 2-8. Equipment setup for luminance measurements.

@

2-7

Operating Instructions—067-0916-00

The waveform displayed should look like the one shown
in Figure 2-6. The same waveform with the Volts Full Scale
on the 1485 changed to 0.2 is shown in Figure 2-9. If the 50
IRE bar is the correct amplitude, the top of the bar from the
offset signal will align with the baseline of the reference sig¬
nal. However, Figure 2-9 shows an obvious error in the 50
IRE bar amplitude. The actual level of the would-be 50 IRE
bar may be found by either using the VARIABLE control or
setting the VAC in the MANUAL mode and adjusting the
Lever Switches to match the top of the bar with the
baseline. This is shown in Figure 2-10.

Fig. 2-9. This is the same waveform as shown in Figure 2-6
with the Volts Full Scale on the waveform monitor set to 0.2.
This shows an obvious error that cannot be detected at the
lower range.

Fig. 2-10. The actual value of the parameter being measured
can be found by using the VARIABLE control to match the ba¬
seband of the "Reference" waveform with the luminance bar of
the "Reference — Offset" waveform.

Chrominance Measurements

The setup for chrominance measurements is the same as
the setup used for luminance measurements, except for the
addition of the 015-0407-00 filter and a 011-0102-01
attenuator. This setup is illustrated in Figure 2-11. The

Subcarrier Harmonic Rejection Filter is placed on the signal
generator under test. The 0.6% precision attenuator is
placed on the VAC OUTPUT to compensate for the 0.6%
pass-band loss of the filter. The CHR P-P chop reference is
used for all chrominance measurements, except for CB

LUM. When making chrominance measurements, turn off
the generator luminance whenever possible.

Fig. 2-11. Equipment setup for chrominance measurements.

Operating Instructions—067-0916-00

Set the VAC to measure a full amplitude B-Y blue

chrominance packet signal with 7.5% setup.
System Select .

Preset Group . .
Preset Level . . .
Chop Reference
Amplitude and. .
Setup Select . . .

Set the waveform monitor controls to the same settings

that were made when measuring luminance signals.

The waveform displayed should look like the one shown
in Figure 2-12. Figure 2-13 is the same waveform with the
Volts Full Scale on the waveform monitor set to 0.2. If the
blue chrominance packet is the correct amplitude the bot¬
tom of the "reference + offset" chrominance packet will
align with the top of the "reference - offset" chrominance
packet. If an error is detected when making this type of
measurement, the amount of error is found by using either
the VARIABLE control or the Lever Switches to match the
top and bottom of the chrominance packets.

Using the TOLERANCE Control

The TOLERANCE control may be used to measure the

percent of deviation from the correct value of a specified
signal amplitude to the one actually measured. When mea¬
suring video or other signals, the TOLERANCE control has
the same effect as the VARIABLE control, the difference in
the two controls being the degree each can change a preset
or manually generated output of the VAC. The VARIABLE
control will change the output to any value the VAC is capa¬
ble of generating, with the new output being indicated on the
readout. The TOLERANCE control will take the value on the

NTSC

CB B-Y/V D’B
BL

CHR P-P

FULL AMP
SETUP

readout and change the output in relation to that setting by
a percent which is read from the TOLERANCE control dial.
For example, if the VAC was set for an output signal of 500
mV, the TOLERANCE control will change the output in a
range of ±3% from that setting. Because the amplitude
range specification changes from ±(0.5% + 0.1 mV) to

±(0.05% + 0.1 mV) when the TOLERANCE control is en¬
abled, it is not recommended to use the control in this man¬
ner. Instead, it may be used to set a reference to one video
signal (as required when making relative chrominance mea¬
surements) and use the VARIABLE control to make the ac¬
tual signal measurement without sacrificing the amplitude
specification.

Some signal generators have an absolute and relative
specification on their chrominance signals. For example, if
chrominance amplitude specifications are 1% relative and
3% absolute, the entire chrominance signal may change in
gain ±3%. The 1% relative tolerance guarantees that no
chrominance signal may change by more than 1% relative to
the peak-to-peak amplitude of the red chrominance packet.
Thus, all phase angles will be tightly controlled by the 1%
specification.

When making absolute and relative chrominance mea¬
surements, first measure all the chrominance packets to
make sure they fall within the 3% absolute specification.

This is done by following the previous explanation on mak¬

ing chrominance measurements. To make the relative mea¬

surements, set the VAC to again measure the red

chrominance packet. Use the TOLERANCE control to

match the peaks of the + and - "reference offset"

waveforms if there is any deviation. This references the

VAC to the red chrominance packet. Any other measure¬

ment made will be offset by exactly the same amount rela¬
tive to the red chrominance packet. Leave the TOLERANCE
control in the same position and remeasure the rest of the
chrominance packets for the 1% specification using the
VARIABLE control to measure the absolute deviation.

Fig. 2-12. Blue chrominance packets of B-Y NTSC color signal
without luminance. The VAC is set in the CHR P-P chop refer¬
ence mode.

Fig. 2-13. Shown is the same waveform as in Figure 2-12 with

the Volts Full Scale on the waveform monitor set to 0.2.

2-9

Operating Instructions—067-0916-00

Waveform Monitor Display Calibration

To calibrate the display of a waveform monitor, connect
the OUTPUT of the VAC to the A input of the waveform moni¬
tor and leave unterminated. See Figure 2-14 for illustration
of setup. Set the waveform monitor controls as follows:

Input.A
Response.Flat

Volts Full Scale.1.0

DC Restorer.Off

Operate/Cal.Operate
Sync.External

Set the VAC in the Manual mode and dial in any refer¬
ence voltage needed with the Lever Switches. The display
on a waveform monitor with 700.0 mV dialed into the VAC is
shown in Figure 2-15 to illustrate the type of waveform
expected.

1480-Series waveform monitors can also be calibrated
using the VAC. The setup used is the same as shown in
Figure 2-14. The waveform monitor controls are set the
same, except the Operate/Cal buttons are both pressed at
the same time. Set the VAC in the MANUAL mode and dial
in either 700.0 mV for PAL or 714.3 mV for NTSC if the DC
RESTORER on the waveform monitor is set for BACK
PORCH, or 999.9 if it is set for SYNC TIP. By setting the
reference offset of the VAC to the -SYNC mode, the top and
bottom of the cal signals should be located at the center of
the vertical position range of the waveform monitor. The

calibration signal should then be adjusted so the top and

bottom of the waveforms meet.

The calibration signal generated by the TEKTRONIX

Fig. 2-14. VAC setup for waveform monitor display calibration.

The 37.5 ft output impedance of the VAC compensates
for the loading of the waveform monitor loop through, so
subsequent measurements made using the waveform moni¬
tor will be corrected for waveform monitor loop through
loading. Thus, the correct amplitude into a true 75 ft load will
be displayed.

Fig. 2-15. Waveform monitor display of 700.0 mV signal from

VAC<

WARNING

THE FOLLOWING SERVICING INSTRUCTIONS

FOR USE BY QUALIFIED PERSONNEL
AVOID PERSONAL INJURY, DO NOT PERFORM ANY
SERVICING
OPERATING
QUALIFIED TO DO SO.

OTHER THAN THAT CONTAINED

INSTRUCTIONS

UNLESS YOU ARE

ONLY. TO

ARE

IN

Section 3—067-0916-00

THEORY OF

Introduction

The following is a description of the electrical circuits in
the Video Amplitude Calibration Fixture (VAC). Refer to the
block diagram and the schematic diagrams on the foldout
pages at the back of the manual to aid in understanding this
description.

Block Diagram

The VAC is constructed on four circuit boards. The block
diagram shows how the various circuit blocks are organized
as well as the circuit board on which each of the circuit
blocks is located. Each of the circuit blocks will be described
in detail after the following block diagram overview.

The logic board is configured around two 8-bit latches,
two 8-bit comparators, and a 16-bit counter which are used
to generate a 16-bit BCD amplitude data word. The ampli¬
tude data can be entered by a 4-digit lever-switch or recalled
from memory using the front-panel signal-selection push
buttons. The amplitude data can be altered by the VARI¬
ABLE control, which increments or decrements the 16-bit
counter by means of a voltage-controlled oscillator used as
a clock for the counter. The analog output signal is generat¬
ed from the 16-bit BCD amplitude data using a 16-bit digital­to-analog converter (DAC) and a 12-bit offset DAC. The 16­bit data also drives a front-panel LED display.

OPERATION

U444

represent the tenths and units information shown on
the readout, while the second 8-bits of address data repre¬
sent the tens and hundreds. When the VAC is in the MAN¬

UAL mode, information is clocked from the Lever Switches
in the same manner. P431 pins 6-9 and 1-4 (selected during
LLL time) represent the tenths and units while P449 pins 6-9
and

1-4

represent the tens and hundreds (selected during

LHL time). See Figure 3-1.

When the VAC is switched to the MANUAL mode, +5 V
is applied to the Output Enable (OE) pin 20 of U444, turning
the memory off. It also applies +5 V to the emitters of Q428
and

Q431

. This enables the timing pulses LLL_ or
base of the transistors to drive the Lever Switches at P431
or P449 pins 5 and 10.

Amplitude Data Logic

Amplitude data from the memory or Lever Switches is
loaded into the latches (U425 and U427) and then to the
counters( U412, U414, U415, and U416). From the
counters, the data is then sent to the readout display (on A2
Readout Board) and to the buffers (U404 and U406). How
this amplitude data is clocked through these components is
described in the following. To help in the description, a situa¬

tion is presented where the amplitude data has just been
changed.

UHL

at the

LOGIC DISPLAY <$>

Signal Selection

PRESET and MANUAL are the VAC’S two primary
modes of operation that generate the amplitude data used
to form the reference square wave output. When the VAC is
in the PRESET mode, amplitude data is generated by a 2K
by 8 EPROM U444. Input information to U444, provided by
the Preset Group and Preset Level buttons, is encoded from
8 lines to 3 lines by U456 and U458 respectively. The level
selection
PRESET/MANUAL) and system select (NTSC, PAL, PAL
M, SECAM) buttons provide TTL information directly to
U444. In the MANUAL mode, addressing information is gen¬
erated by front-panel Lever Switches only.

stores only 8-bit data, U444 is enabled at twice the rate (at
the rate of ME) of the information being loaded into the DAC
(at the rate of Chop).The first 8-bits of address data out of

@

Because the DAC uses 16-bit data and the EPROM

(FULL

AMP/REDUCED,

SETUP,

When the memory (U444) or Lever Switch amplitude
data is changed, the first byte (low byte) of data is presented
to the low byte comparators (U423 and U442) and the low
latch (U425) during LLL. The asynchronous comparators
(U423 and U442) will send a low to U454A (D input), indicat¬
ing that there is a difference between the latch input and
output. At the rising edge of LLL, U453C pin 10 will send out
a "load counter pulse" (LC). This enables the data at the
output of the latches (U425 and U427) to be loaded into the

counters (U412 through U416). The second byte of data
(high byte) is clocked through in the same manner. The high

byte data is presented to the high latch (U427) during LHL.

The asynchronous comparators (U426 and U446) will send
a low to U454B pin 4, indicating that there is a difference
between the latch input and output. If the first byte (low
byte) of data was the same and LC had not gone low, then
U453C pin 10 will now send a "load counter pulse" (LC’) at
the rising edge of LHL. Otherwise, if the first byte of data
was different, LC would still be in a low state. In that case,
as soon as the high byte data was clocked into the latch at
LHL, it would also be loaded into the counters. A flow chart
is provided in Fig. 3-2 to better illustrate the amplitude data

flow in reference to the timing pulses.

3-1

LC'
+

LC

10

PIN

U453C

Theory of Operation—067-0916-00

Time

Fig. 3-2. Amplitude Data Clock.

Theory of Operation—067-0916-00

Timebase

The time-base oscillator circuitry is referenced from one
of two crystals, determined by which TV system button is
selected. Q477 and Q497 form a switch system that allows
TTL information from the Switch board A1 to select the cry¬
stal to be used. NTSC or PAL-M TV system button selec¬
tions send a low to P444 pin 3, enabling Q477 and Y478.

Conversely, PAL or SECAM TV system button selections
send a high to P444 pin 3, enabling Q497 and Y488. Q474 is
part of a Colpitts oscillator circuit, the output of which is
shaped by Q475 and a buffer (U474C) before clocking the
binary counter at U495 pin 14. For the sake of clarity, the
counter timing block made up of U495, U494, U493, and
U482 is illustrated in Fig. 3-3, showing the breakdown of the
reference-oscillator frequency and final output of the VAC’S
timing pulses. Although two different crystals are used to
run the oscillator circuit, the change in the final timing pulses
is small. The only reason for the two crystals is to change
the OUTPUT chop rate from 270 HZ for NTSC and PAL-M
TV systems to 275 HZ for PAL and SECAM TV systems.

Variable Control

The VARIABLE control is used to vary the amplitude of

the chopped OUTPUT independently from the Lever

Switches or Preset select buttons. It does this by clocking
the counters (U412, U414, U415, and U416) up and down.
Normally, when the variable control is not used, the
counters are operated as latches using the load function.
The VARIABLE control uses a springloaded recentering
mechanism to vary a 10K1] pot which supplies a plus or
minus voltage to the bases of Q460, Q461, and to the plus
input of U421. Q460 and Q461 form an absolute value am¬
plifier and vary the voltage at the base of Q462 as the mag¬
nitude of voltage is changed by the VARIABLE control.

Q462 in turn varies the current source which changes the
frequency of the oscillator circuit made from U470. When
the VARIABLE control is centered, Q462 is off and there are
no clock pulses generated. However, when the VARIABLE
control is turned in either direction, Q462 is turned on and
helps to generate clock pulses at a frequency proportional
to the amount of bias on the bases of Q460 and Q461.
Clock pulses out of U470 pin 3 are used to clock the
counters and to set flip-flop (U473B) to enable the VARI¬
ABLE indicator light (DS76). The positive or negative volt¬
age applied to the comparator (U421) generates the
down/up function for the addressing clocks. Turning the
VARIABLE control counterclockwise results in a positive in¬
put and output from U421, enabling the down function of
the clocks. Conversely, turning the VARIABLE control
clockwise results in a negative input and output from U421,
enabling the up function of the clocks.

Once the VARIABLE control has been used, the VAC
may be reset to the original Lever Switch or preset selection
value by pressing the RESET button. The RESET button
applies a low to U454A and U454B clear inputs, which gen¬
erates a new load pulse from U453C to the clocks. This

loads in the original amplitude data from the latches (U425
and U427).

3-4

U495

U494

Fig. 3-3. Timebase breakdown.

U493

U482

3643-18

Theory of Operation—067-0916-00

DISPLAY AND DAC DIAGRAM <§>

Amplitude Data Input and DAC Output

The 16 bits of amplitude data from the Logic Board A4
are brought into the DAC board at the edge connectors
P365 and P360 pins 2-9. From the edge connectors, the
amplitude data are sent to the octal buffers (U353 and
U357) while the 12 most significant bits are sent directly to
the Offset DAC (U348). The Chop pulse from the Logic
board enters the DAC board at P365 and P360 pins 10 and
is sent to the octal buffers through the Operate Mode jump¬
er P359. Address information is then sent to the Signal DAC
through the octal buffers when the Chop pulse is low. When
the Chop pulse is high, amplitude data is not passed
through to the Signal DAC, and the output of the octal buff¬
ers is pulled high by the pull-up resistor network of R351
and R355. Therefore, the 12 MSB of amplitude data are
present at the input of the Offset DAC at all times while the
16 bits of address data are only present at the input of the
Signal DAC when the Chop pulse is low.

Amplitude data sent to both DAC’s are translated into
specific amounts of current generated at their outputs. The
amount of output current is determined by the bits enabled
at the DAC inputs. Table 3-1 lists the amount of current

generated by the individual bit inputs to each DAC. The cur¬

rent each DAC generates is then used to drive the plus and
minus inputs of U335. The minus input of U335 is (driven by

the Signal DAC output), turned on and off at the rate of
Chop. The + input of U335 is used to set a reference for the

relative amplitude values of the switched dc output. De¬
pending on the Reference Offset mode selected, the + in¬

put of U335 is held at a reference ground (+LUM selected)
or driven by the Offset DAC (CHR P-P or -SYNC selected).
Changing the Reference Offset mode only changes the rela¬
tive value of the switched dc output and not the p-p ampli¬
tude of the switched dc output. For example, if the VAC was
setup for a 800.0 mV output in the -SYNC mode, the relative
values of the output would be from -800.0 mV to 0 V. In the
CHR P-P mode it would be from -400.0 mV to +400.0 mV
and in the +LUM mode it would be from -800.0 mV to 0 V.

Table 3-1

DAC Output Current Capabilities

Bit Enabled

shunt regulated by zener diodes VR378 and VR385 to
produce the +20 V and -20 V supplies for the op-amps in all

three regulated supplies. Also, the +20 V supply drives

U368, which provides a precise 10 V source used as a refer¬

ence for each op-amp in the regulator circuits.

configured as a non-inverting amplifier with a voltage follow¬
er consisting of Q391 and Q392. The input signal to the op­amp is 5.99 V, which is divided down from the 10 V
reference. The amplifier operates with a gain of 2.5, giving
an output of 14.99 V. Q391 and Q392 provide current gain
and unity-voltage gain at the output of the supply. CR378,
CR379, and CR380 are used in conjunction with R378 to
limit output current. The +5 V supply is similar to the

+15 V supply except for having an input of 2.0 V to op-amp
U371 instead of 5.99 V. The -15 V regulated supply also
functions similarly, except that op-amp U375 is configured
as a inverting amplifier with a gain of 1.5.

(on = low)

The +15 V regulated supply contains an amplifier (U378)

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1
0

DAC

Current

1.0 mA
500 /iA
250 nA
125 fiA

62.5 M

31.25

15.625 fiA

7.813 mA

3.906 fiA

1.953 mA

0.997 MA

0.488 fiA

0.244 mA

0.122 nA

0.061 i±A

0.031 mA

Power Supply

The VAC uses the three unregulated supply sources
from the power supply module (TM500-Series mainframe)
to form three regulated voltage supplies. The unregulated
supplies come in through the rear edge connector at -33.5,

+ 33.5, and +11.5 V. The +11.5 V unregulated supply is

used as a source for the voltage-follower transistors on the

+ 5 V regulated supply. Both the +33.5 V and -33.5 V sup¬
plies are used as a source for the +15 V and -15 V regulat¬
ed supplies. The +33.5 V and -33.5 V supplies are also

Readout

to the 4-digit LED display. Normally, S36B on the TOLER¬
ANCE control is closed, so the flasher (U295) enables the
display all the time. When the TOLERANCE control is en¬
abled, S36B opens and the display flasher (U295) indicates
the uncalibrated OUTPUT.

Amplitude Data from A4 Logic board provides BCD data

3-5

Section 4-067-0916-00

CALIBRATION PROCEDURE

PERFORMANCE CHECK PROCEDURE

Introduction

The Performance Check Procedure verifies the electrical
performance requirements. It also includes a functional op¬
eration check which makes the procedure usable to deter¬
mine the instrument’s acceptability for an incoming
inspection facility. If the Video Amplitude Calibration Fixture
(VAC) fails the first step in the performance check,
recalibration of the instrument is required. The Adjustment
Procedure follows the Performance Check Procedure in this
section. If recalibration does not correct the discrepancy, or
if the instrument fails any of the other performance checks,
repair is necessary.

Calibration Interval

To ensure instrument accuracy, calibration is recom¬

mended every 12 months.

Services Available

Tektronix, Inc. provides complete instrument repair and

adjustment at local field Service Centers and at the Factory

Service Center. Contact your local Tektronix Field Office or
representative for further information.

Performance Documentation

Because the VAC will be used to provide an amplitude­calibration reference for many video sources and display de¬
vices, a special effort to document VAC performance is
suggested. Appendix A provides fill-in tables for perfor¬
mance checks 1 and 3 and a Performance Check List which

should be completed every time the VAC is calibrated to
insure the instrument is NBS traceable. Copies of the per¬
formance documentation will be provided to the customer
every time the VAC is calibrated by a Tektronix Service
Center. The Service Centers will also be required to send a
copy to Television Service Support in Beaverton for
analysis.

Test Equipment Required

gested to perform the Performance Check and Adjustment

Procedure.

The following test equipment, or the equivalent, is sug¬

Description

DC Voltmeter

Oscilloscope
System

Power Module

TM 500 Extender Cable

75 Low Loss Coaxial Cable

Bnc to "EZ" Clip Adapter

@

Table 4-1

TEST

EQUIPMENT REQUIRED

Performance Requirements

Accuracy of 0.01% at 1 V.
Must be NBS traceable.

50 MHZ bandpass.
1 mV/div. 1

fis/div.

Fluke 8500A
Dana 6900A

TEKTRONIX 7603
TEKTRONIX 7A13
TEKTRONIX 7B35A

TEKTRONIX TM503

Tektronix part no.
067-0645-02

Tektronix part no.

012-0159-01 or 012-0159-00

Tektronix part no.

013-0076-01

Example

4-1

Calibration Procedure—067-0916-00
Performance Check Procedure

Preliminary Procedure

1. Ensure

applied line-voltage source.

2. Install the VAC into the power module or connect it to

the extender cable.

3. Turn on
the VAC to stabilize. Refer to the DVM manual for its warm¬
up time.

that all test equipment is adapted to a suitable

all equipment and allow at least 20 minutes for

1. Check Amplitude Range, Lever Switches

a. Turn the power to the VAC off and remove the instru¬

ment from its power module.

b. Remove the two screws holding the top cover on the

VAC. Lift the cover off.

c. Move the Operate Mode jumper at P359 on the DAC

board A3 to its (3-4) ON position.

PROCEDURE

e. Set the VAC front-panel controls as follows:

PRESET/MANUAL

+ LUM/-SYNC

CHR P-P/LUM/SYNC

Lever Switches

f. Connect the OUTPUT of the VAC through the 75 ft low
loss cable to the input of a dc voltmeter and leave hooked
up through step 3. Verify that the reading on the voltmeter,
minus the reference zero reading, is within the range given
in the "Specification Tolerance" column in Table 4-2 adja¬
cent to the Lever Switch Setting the VAC was set for.

Repeat this step for each Lever Switch Setting listed in

Table 4-2.

2. Check TOLERANCE Control

a. Set the VAC front-panel controls as follows:

PRESET/MANUAL
+ LUM/-SYNC

CHR P-P/LUM/SYNC

Lever Switches

Out
In
Out

000.0

Out
In
Out

111.1

MANUAL
+ LUM
LUM/SYNC

MANUAL

H-LUM

LUM/SYNC

d. Connect the VAC back to the power module and turn

the power on.

Amplitude Tolerance Check

Lever Switch

Setting

(mV)

000.0

111.1

222.2

333.3

444.4

555.5

666.6

777.7

888.8

999.9

Specification

Tolerance

±(.05%

+

.1 mV)

Reference

110.94 — 111.26

221.99 — 222.41

333.03 — 333.57

444.08 — 444.72

555.12 — 555.88

666.17 — 667.03

777.21 — 778.19

888.26 — 889.34

999.3 — 1000.50

Table 4-2

b. Pull the TOLERANCE control out and turn it fully
counter-clockwise. The readout on the VAC should now be
flashing.

Specification Tolerance with

TOLERANCE Control Enabled

-3% ±(.5% + .1 mV) +3%

Zero Reference

107.13 — 108.41 : 113.76 — 115.11

536.04 — 541.63 : 569.20 — 575.13

964.95 — 974.85 : 1024.65 — 1035.15

4-2

Calibration Procedure—067-0917-00

Performance Check Procedure

VI

000.0

000.1

000.3

000.7

000.9

001.9

003.9

007.9

009.9

019.9

039.9

079.9

099.9

199.9

399.9

799.9

999.9

Lever Switch

Settings

Table 4-3

DIFFERENTIAL LINEARITY CHECK

V2

000.1

000.2

000.4

000.8

001.0

002.0

004.0

008.0

010.0

020.0

040.0

080.0

100.0

200.0

400.0

800.0

Actual Readings

from DVM

avi

aV2

Differential

Amplitude

a — a

V2

VI

c. Using Table 4-2 verify that the reading on the
voltmeter, minus the zero reference reading/ is within the
range given in the "TOLERANCE Control Enabled, — 3%"
column for the Lever Switch setting the VAC has been set
for.

d. Turn

peat step c using the range given under the " +3%" column.

e. Rep

555.5 and 999.9. Press the TOLERANCE control back in.

the TOLERANCE control fully clockwise and re¬

eat steps b, c, and e for a Lever Switch setting of

NOTE

The reading on the DVM when measuring 000.0 is the

reference zero reading. The reference zero reading is
subtracted from the actual reading of the DVM when
measuring the other Lever Switch settings listed in

Table 4-2. The value of the reference zero reading is

typically less than 1.0 mV.

3. Check Absolute and Differential Linearity

a. Set the VAC front-panel controls as follows:

Out
In
Out

000.0

PRESET/MANUAL

+ LUM/—SYNC
CHR P-P/LUM/SYNC
Lever Switches

b. Fill out Table 4-3 Differential Linearity Check. For each

Lever Switch setting VI and V2, log the actual reading in
mV for avi

c. Calculate the differential amplitude by using the equa¬

tion a -a . The differential amplitude must be within

±.05 mV.

and ay2

Lever Switch

Setting

(Vw J

' desired'

250.0 mV

500.0 mV

750.0 mV

respectively.

Table 4-4

ABSOLUTE LINEARITY

Actual Reading

(mV)

(Vac,ua,)

MANUAL

+ LUM

LUM/SYNC

Absolute
Linearity

Error

4-3

Calibration Procedure—067-0916-00
Performance Check Procedure

e. Fill out Table 4-4 and calculate the absolute linearity

error by the following equation. The absolute linearity must

be less than ±0.1 mV.

picked. This table, however, does not have to be followed.
The only requirement is that each Preset Level and Preset
Group button is exercised, and that the correct output in mV
is indicated on the readout. A complete list of all the different

Preset Level combinations is provided at the end of the Ad¬
justment Procedure in this section.

V

V -V

actual offset

= Absolute Linearity Error

V

— Lever Switch Setting at point which linearity is

desired

being measured.

-

999.9

(V

' fullscale offset'

-V

)

^

Absolute

Linearity

Error

V — Measured voltage at point which linearity is being

measured.

V

999.9.
V

000.0

V,

fullscale

the av1

4. Check Preset Group, Preset Level, System
Select, and Amplitude Setup Functions

— Measured voltage with Lever Switches set to

— Measured voltage with Lever Switches set to

.

and V „ values can be taken from Table 4-3 under

offset

column adjacent to the proper Lever Switch Setting.

The purpose of this check is to exercise each of the
preset functions. Only a selected sample of combinations is
made to check the operation of each button. This is because
it would not be feasible to check the 500-plus combinations
of preset values the VAC is capable of generating. Table 4-5
is an example of such a check where selected values were

a. Set the VAC front panel controls as follows:

PRESET/MANUAL
+ LUM/—SYNC

CHR P-P/LUM/SYNC

Lever Switches

b. Connect

the OUTPUT of the VAC through the 75 12

low-loss cable to the input of a dc voltmeter.

In

In

Out

000.0

PRESET

+ LUM

LUM/SYNC

c. Use Table 4-5 to select the front-panel settings for the
VAC, and verify that each readout is correct. Also, check all
dc levels through the OUTPUT using the dc voltmeter.

d. Turn
power module.

e. Place

the power off to the VAC and remove it from the

the jumper of P539 to its original 2—3 (OPER¬

ATE) position and replace the top cover to the VAC.

f. Replace the VAC into its power module and turn the

power on.

4-4

Table 4-5

PRESET TEST SELECTIONS

5. Check Noise

a. Set the VAC front-panel controls as follows:

Calibration Procedure—067-0916-00

Performance Check Procedure

g. Set the +LUM/—SYNC to the in position. Turn the
VARIABLE control fully clockwise and verify that only the
positive peak on the square wave moves away from ground.

PRESET/MANUAL
CHR P-P/LUM/SYNC
Lever Switches

b. C

onnect the 75

to a dc coupled vertical input of an oscilloscope.

c. Set the vertical amplifier of the oscilloscope to 1
mV/div. The noise coming out of the VAC should not exceed
1 mV, from 0—5 MHZ.

6. +LUM, -SYNC, CHR P-P, VARIABLE,
a. Set the VAC front-panel controls as follows:

PRESET/MANUAL
CHR P-P/LUM/SYNC
Lever Switches

b. Connect the 75 cable from the OUTPUT of the VAC

to a dc-coupled vertical input of an oscilloscope.

Q,

cable from the OUTPUT of the VAC

Out

In

000.0

Out

In

555.5

MANUAL
CHR P-P

RESET

MANUAL
CHR P-P

7. Check Rise Time

a. Set the VAC front-panel controls as follows:

PRESET/MANUAL
Lever Switches

b. Connect

vertical input of an oscilloscope.

c. Set the vertical amplifier of the oscilloscope to 200
mV/div and adjust the horizontal to 0.5 ms/div. Turn the
delay time on the horizontal to 1 jus/div and verify that the
rise time is less than 1 ^s.

8. Check OUTPUT Frequency

a. Set the VAC front-panel controls as follows:

PRESET/MANUAL

NTSC

Lever Switches

the OUTPUT from the VAC to a dc-coupled

Out

500.0

MANUAL

Out

In

500.0

MANUAL

c. Set the vertical amplifier at 200 mV/div and adjust the

timebase so a few cycles of the square wave are showing.

d. T

urn the VARIABLE control on the VAC clockwise and
verify that both peaks of the square wave are moving away
from ground at the same rate. The red LED below the VARI¬
ABLE control should turn on.

e. Reset

RESET button. The red LED should now be off.

f. On

LUM/SYNC and the +LUM/—SYNC buttons to the Out po¬

sition. Turn the VARIABLE control fully counter- clockwise
and verify that only the negative peak of the square wave
moves away from ground. Reset the VAC back to 555.5
mV.

the VAC back to 555.5 mV by pressing the

the front panel of the VAC, reset the CHR P-P/

b. Connect

vertical input of an oscilloscope.

c. Set the vertical amplifier of the oscilloscope to 200
mV/div and adjust the horizontal for a + slope trigger at 0.2
ms/div. Verify that one half cycle of the square wave is ap¬
proximately 1.85 ms.

d. Set the PAL button on the VAC to the ‘in’ position.

Verify that one-half cycle of the square wave is approxi¬
mately 1.82 ms.

e. An

a frequency of 270 Hz for NTSC and PAL-M standard selec¬
tions or 275 Hz for PAL and SECAM standards at the OUT¬
PUT of the VAC.

the OUTPUT from the VAC to a dc-coupled

alternate procedure is to use a counter to check for

4-5

Calibration Procedure—067-0916-00
Adjustment Procedure

ADJUSTMENT PROCEDURE

Introduction

Use this adjustment procedure to restore the VAC to
original performance requirements. This Adjustment Proce¬
dure need not be performed unless the instrument fails to

meet the Performance Requirements of the electrical char¬
acteristics listed in the Specification section, or if the Perfor¬
mance Check Procedure cannot be completed satisfactorily.
If the instrument has undergone repairs on the DAC board
A3, the Adjustment Procedure is required.

Completion of all adjustment steps in this procedure

does not check specifications for which there are no adjust¬
ments. Therefore, the Performance Check Procedure must
be completed after the Adjustment Procedure.

Test Equipment Required

The test equipment (or equivalent) listed in Table 4-1 is

required for adjustment of the VAC. Specifications given for
the test equipment are the minimum necessary for accurate
adjustment. All test equipment is assumed to be correctly
calibrated and operating within specifications. The DVM
used must be NBS traceable.

An optional piece of test equipment not mentioned in Ta¬

ble 4-1 is an oven which has to be capable of creating an
artificial climate of + 35°C. The oven is not needed if step 3
in the Calibration Procedure is not done.

3. Turn on all equipment and allow at least 20 minutes for
the equipment to stabilize. All adjustments must be made at
an ambient temperature of 25°C ±3° to be NBS traceable.

1. Set R338 Offset, R349 +Gain, R339 —Gain

a. Turn the power to the VAC off and remove the instru¬

ment from its power source.

b. Remove the two screws holding the top cover to the

VAC and lift the cover off.

c. Move the Operate Mode jumper at P359 to its 1—3

(OFF) position.

If P335 is connected from pins 1 to 4 and 3 to 6,

temperature compensation has been disabled and

need not be adjusted unless found to exceed

±15 ppm/°C.

d. If an oven is available to perform optional step 3, pull
jumper P335 (Temp Comp Polarity) off. Otherwise, leave
jumper P335 in place.

PROCEDURE

NOTE

Adjustment Locations

Refer to the adjustment locations pullout in this manual
for location of all adjustable components and test points
mentioned in this procedure. All adjustable components are
located at the top towards the front panel of the VAC on A3
(DAC board).

Preliminary Procedure

1. Ensure that all test equipment is adapted to a suitable

applied line-voltage source.

2. Connect the VAC through the TM 500 extender cable

to the power module.

4-6

e. Connect power to the VAC via the TM 500 extender

cable and turn the power source back on.

f. Set the VAC front-panel controls as follows:

PRESET/MANUAL
+ LUM/-SYNC

CHR P-P/LUM/SYNC

Lever Switches

g. Connect the OUTPUT from the VAC through the 75 ft

low loss cable to the input of a dc voltmeter. Adjust R338

(Offset) for a reading of 0.0 mV.

Out
In
Out

000.0

MANUAL
+ LUM
LUM/SYNC

@

Calibration Procedure—067-0916-00

Adjustment Procedure

h. Move the Operate Mode jumper P359 to its 3—4 (ON)

position and reset the Lever Switches to 999.9. Adjust R349

( + Gain) for a reading of 999.9 mV.

i. Change the +LUM/—SYNC button on the front pane!

of the VAC to the ‘out’ position. Adjust R339 (—Gain) for a

reading of 0.0 mV.

2. TOLERANCE Control Alignment

a. Set the VAC front-panel controls as follows:

PRESET/MANUAL
+ LUM/-SYNC
CHR P-P/LUM/SYNC
Lever Switches

b. Move the Operate Mode jumper P359 to its 3—4 (ON)

position. Pull the TOLERANCE control out and rotate until

999.9 mV reads out on the voltmeter. Loosen the set screw
on the TOLERANCE control and point the indicator to 0%.
Tighten set screw.

c. With the TOLERANCE control still pulled out, turn it to

+ 3% and adjust R329 (Tolerance) for an output of 1.0299
V. Turn the TOLERANCE control to -3% and adjust R329
for an output halfway between the reading measured and
the desired reading of 969.9 mV (which should be in the
range of 964.95 to 974.85 mV).

Step 3 Temperature Compensation is optional and
should not be done without an oven.

If P335 is connected from pins 1 to 4 and 3 to 6,

temperature compensation has been disabled and

need not be adjusted unless it is found to exceed

±15 ppm/°C.

NOTE

Out
In
Out

999.9

MANUAL
+ LUM
LUM/SYNC

Temperature Compensation (Optional
Adjustment)

a. Set the front panel controls on the VAC as follows:

PRESET/MANUAL
+ LUM/-SYNC

CHR P-P/LUM/SYNC

Lever Switches

b. Connect a
loss cable. Connect the "EZ" clip to TP336, and the other
end of the cable to a dc voltmeter.

c. Replace
jumper P359 to the 3—4 (ON) position. At room tempera¬
ture, adjust R346 (TC AMPL) for a reading of 0.0 mV.

d. Use a large oven to heat the VAC to 35°C. Connect
the dc voltmeter to the OUTPUT of the VAC. Adjust R336
(TC ZERO) for 999.9 mV.

e. If
brate, rotate P335 180° and readjust R336 as above.

f. Recheck

bnc-to-" EZ" clip adapter to the 75

jumper P335 (Temp Comp Polarity). Move

the temperature compensating circuit does not cali¬

step 1, Offset, + Gain, —Gain.

Out

In

Out

999.9

4. Operation and Performance Verification

To assure the VAC is operating properly and all specifi¬

cations are met, the Performance Check Procedure must

follow the Adjustment Procedure.

Preset Levels

The following is a complete list of tables for all the differ¬
ent combinations of preset levels the VAC is capable of pro¬
ducing. The lists are separated into groups containing the
preset levels for each video standard (NTSC, PAL, PAL M,
and SECAM).

MANUAL

+ LUM

LUM/SYNC

Q

low-

4-7

Calibration Procedure—067-0916-00
Adjustment Procedure

CONTENTS

Table 4-6 Preset Levels.
Table 4-7 NTSC Color Bars Preset Levels.
Table 4-8 PAL Color Bars Preset Levels.
Table 4-9 PAL M Color Bar Preset Levels.
Table 4-10 SECAM Color Bar Preset Levels.

Table 4-6

PRESET LEVELS

Level

7.5
10

20
30

30.3a
40

42.9a

50

LEVEL

55
60
70
75

77s

80
90

100

30.30 is actually 30.304;

42.9 is actually 42.857;
77 is actually 76.875

NTSC

053.6

071.4

142.9

214.3

216.5

285.7

306.1

357.1

NTSC

392.9

428.6

500.0

535.7

549.1

571.4

642.9

714.3

PAL

052.5

070.0

140.0

210.0

212.1

280.0

300.0

350.0

PAL

385.0

420.0

490.0

525.0

538.1

560.0

630.0

700.0

PAL M

052.5

070.0

140.0

210.0

212.1

280.0

300.0

350.0

PAL M

385.0

420.0

490.0

525.0

538.1

560.0

630.0

700.0

Table 4-7

4-8
4-8
4-9
4-9
4-10

SECAM

SECAM

052.5

070.0

140.0

210.0

212.1

280.0

300.0

350.0

385.0

420.0

490.0

525.0

538.1

560.0

630.0

700.0

FULL AMP (100%) and no SETUP

BAR

WH

YEL 635.7

MG 292.9 740.8

FULL AMP (100%) and 7.5% SETUP

BAR

WH

YEL

MG

REDUCED AMP (75%) and no SETUP

BAR

WH

YEL

MG

REDUCED AMP (75%) and 7.5% SETUP

BAR LUM R-Y

WH

YEL

MG

NTSC COLOR BARS PRESET LEVELS

LUM

714.3

500.0

CY
GN 421.4

RD

214.3
BU 078.6
BK

000.0 000.0 000.0 000.0 000.0 000.0

LUM R-Y

714.3

641.6
CY

516.1

443.4 685.2

GN

324.5
RD

251.8

126.3

BU
BK

53.6

LUM

535.7

476.8 106.9

CY

375.0

GN

316.1

219.6
RD

160.7
BU

058.9 106.9
BK

000.0 000.0

549.1 000.0

494.6 098.9 433.1

400.4

CY
GN

345.9

256.7

202.2

RD
BU 108.1
BK

053.6 000.0 000.0

R-Y
(P-P)

000.0 000.0

142.6

883.4

740.8

883.4

142.6

(P-P)

000.0 000.0

131.9

817.1

685.2

817.1 195.0 840.1

131.9

000.0

R-Y

(P-P)

000.0 000.0 000.0

662.5

555.6 310.0

555.6 310.0

662.5 158.1

(P-P)

612.9

513.9 286.8 588.5 1 292.9

513.9

612.9 146.3

098.9 433.1

B-Y
(P-P)

624.2

210.9

413.4

413.4

210.9

624.2

B-Y
(P-P)

577.4 592.3

195.0

382.4

382.4 784.7

577.4

000.0

(P-P)

468.2

158.1

468.2

000.0 000.0

(P-P)

000.0 000.0 000.0 000.0

146.3 630.1 \

286.8 588.5 / 292.9

B-Y

B-Y

CHR

1

(P-P)

000.0 000.0

640.3

459.6 445.9

908.2 855.7

848.3 396.1 750.1

848.3 396.1 750.1

908.2 855.7

640.3 459.6 445.9

CHR

1

454.7 441.2

846.7

392.0 742.3

392.0 742.3

846.7

454.7 441.2

000.0

344.7

641.8 228.2

297.1

641.8

344.7 334.4

000.0

339.9

632.8

632.8 225.0

339.9

1

1

(P-P)

000.0 000.0 000.0

840.1

784.7

592.3

000.0 000.0 000.0

CHR

(P-P)

480.2

681.2

636.2 297.1

636.2

681.2

480.2

CHR

(P-P)

444.2

630.1-

444.2 \

000.0 j 000.0 000.0

Q

000.0

304.3

304.3

Q

301.1

301.1

Q

000.0

334.4

562.6

562.6

228.2

000.0

Q

329.7

225.0

554.7

554.7

329.7

4-8

Calibration Procedure—067-0916-00

Adjustment Procedure

Table 4-8

PAL COLOR BARS PRESET LEVELS

FULL AMP (100%) and no SETUP

BAR

WH

YEL

CY
GN
MG
RD
BU
BK

FULL AMP (100%) and 25% SETUP

BAR

WH

YEL

CY
GN

MG

RD
BU
BK

LUM

700.0

620.2

490.7

410.9

289.1

209.3

079.8

000.0

LUM

700.0

640.2

543.0

483.2

391.8

332.0

234.9

175.0

000.0

140.0

860.7

720.7

720.7

860.7

140.0

000.0

V

000.0

105.0

645.5

540.5

540.5

645.5

105.0

000.0

V

U

CHR(P-P)

000.0

000.0

611.5

627.3

206.4

885.1

405.1

826.8

405.1

826.8

206.4

885.1

611.5

627.3

000.0

000.0

u

CHR(P-P)

000.0

000.0

458.6

470.5

154.8

663.8

303.9

620.1

303.9

620.1

154.8

663.8

458.6

470.5

000.0

000.0

FULL AMP (100%) and no SETUP

FULL AMP (100%) and 50 mV SETUP

PAL M COLOR BARS PRESET LEVELS

BAR

WH

YEL

CY
GN

MG

RD
BU
BK

BAR

WH

YEL

CY
GN
MG
RD
BU
BK

LUM

700.0

620.2

490.7

410.9

289.1

209.3

079.8

000.0

LUM

700.0

625.9

505.7

431.6

318.5

244.4

124.1

050.0

Table 4-9

V

000.0

140.0

860.7

720.7

720.7

860.7

140.0

000.0

V

000.0

130.0

799.2

669.2

669.2

799.2

130.0

000.0

U

000.0

611.5

206.4

405.1

405.1

206.4

611.5

000.0

U

000.0

567.8

191.6

376.2

376.2

191.6

567.8

000.0

CHR(P-P)

000.0

627.3

885.1

826.8

826.8

885.1

627.3

000.0

CHR(P-P)

000.0

582.5

821.9

767.7

767.7

821.9

582.5

000.0

REDUCED AMP (75%) and no SETUP

BAR

WH

YEL

CY
GN

MG

RD
BU
BK

LUM

525.0

465.2

368.0

308.2

216.8

157.0

059.9

000.0

V

000.0

105.0

645.5

540.5

540.5

645.5

105.0

000.0

U

000.0

458.6

154.8

303.9

303.9

154.8

458.6

000.0

REDUCED AMP (100%) and no setup

BAR

WH

YEL

CY
GN

MG

RD
BU
BK

BAR

WH

YEL

CY

GN

MG

RD
BU
BK

CHR(P-P)

470.5

/ 663.8

620.1

620.1

663.8

470.5

000.0

000.0

REDUCED AMP (75%) and 50 mV SETUP

LUM

525.0

465.2

368.0

308.2

216.8

157.0

059.9

000.0

LUM

537.5

481.9

391.7

336.2

251.3

195.8

105.6

050.0

¥

000.0

105.0

645.5

540.5

540.5

645.5

105.0

000.0

V

000.0

097.5

599.4

501.9

501.9

599.4

097.5

000.0

U

CHR(P-P)

000.0

000.0

458.6

470.5

154.8

663.8

303.9

620.1

303.9

620.1

154.8

663.8

458.6

470.5

000.0

000.0

U

CHR(P-P)

000.0

000.0

425.9

436.9

143.7

616.4

282.2

575.8

282.2

575.8

143.7

616.4

425.9

436.9

000.0

000.0

Calibration Procedure—067-0916-00
Adjustment Procedure

Table 4-10

SECAM COLOR BARS PRESET LEVELS

FULL AMP (100%) and no SETUP

+ LUM

700.0

620.2

490.7

410.9

289.1

209.3

079.8

000.0

+ LUM

525.0

465.2

368.0

308.2

216.8

157.0

059.9

000.0

BAR

WH
YEL

CY
GN

MG

RD
BU
BK

REDUCED AMP (75%) and no SETUP

BAR

WH

YEL

CY
GN

MG

RD
BU

BK

D’R

214.5

175.9

542.5

507.2

284.4

348.6

265.7

214.5

D’R

214.5

183.8

476.0

431.9

212.3

252.2

252.2

214.5

D’B

166.7

449.2

179.9

333.5

253.4

233.7

350.3

166.7

D’B

166.7

362.8

168.5

280.3

211.6

211.8

277.5

166.7

REDUCED AMP (25%) and (0%) SETUP

D’R

BAR

WH

YEL

CY
GN

MG

RD
BU
BK

+ LUM

175.0

155.1

122.7

102.7

072.3

052.3

020.0

000.0

214.5

203.3

295.8

281.7

168.7

164.2

226.6

214.5

D’B

166.7

211.1

161.5

192.2

162.0

177.5

168.2

166.7

4-10

@

Section 5—067-0916-00

MAINTENANCE

PREVENTIVE MAINTENANCE

Preventive maintenance steps performed on a regular

basis will improve the reliability of the VAC. However,
checks of the semiconductors in the absence of a malfunc¬
tion are not recommended as preventive maintenance mea¬

sures. The recommended time for performing preventive

maintenance is just before instrument adjustment.

Cleaning

Do not use acetone, MEK, MIBK, benzene, toluene
carbon tetracholoride, trichloroethylene, methyl alco¬
hol, methylene chloride, sulphuric acid, or Freon
compunds for cleaning the VAC. Use only clean water
and a mild detergent.

,

TROUBLESHOOTING AIDS

Theory of Operation

Section 3 of this manual explains circuit operation in
detail. The section is a troubleshooting aid when used in
conjunction with the circuit diagrams.

Diagrams

A block diagram and detailed circuit diagrams are located
on foidout pages in the Diagram section. The circuit dia¬
grams show the component values and assigned circuit ref¬
erence numbers of each component. The first page of the
Diagram section defines the circuit symbols and reference
designators used in the manual. Important waveforms and
voltages are shown within the diagrams.

Exterior. Loose dust may be removed with a soft cloth or

dry brush. Water and a mild detergent may be used; howev¬

er, abrasive cleaners should never be used.

Interior. Cleaning the interior of the unit should precede
adjustment, since the cleaning process could alter the
settings of calibration adjustments. Use low-velocity com¬
pressed air to blow off accumulated dust. Hardened dirt can
be removed with a soft dry brush, cotton-tipped swab, or a
cloth dampened in a solution of water and mild detergent.

Lubrication

Push-button switches on the Switch board A1 and the
DAC board A3 should receive occasional spray applications
of "No Noise" lubricant and cleaner to the gold areas of the
switch and circuit board.

Adjustment

After cleaning or repairs, do the performance check as
described in Section 4 of this manual. If all functions are
within specification, no adjustment is needed. If one or more
of the specifications are not met, calibrate the instrument as
directed in Section 4.

Circuit Board Illustrations

To identify electrical components when troubleshooting,
turn to the Parts Location Grid that is located on the back of
a foidout page at the left ot the related circuit diagrams. The
parts location diagrams on the DAC board A3 and the Logic
board A4 were drawn as if viewing the parts through the
back of each board. Component values, descriptions, and
ordering data are given in the Replaceable Electrical Parts
list.

Component and Wiring Color Codes

Colored stripes or dots on electrical components signify
electical values, tolerances, etc., according to EIA stan¬
dards. Components not color coded usually have informa¬
tion printed on the body. Some wiring coding follows the
same EIA standards.

Testing Equipment

Generally, a wide-band oscilloscope, a low-loss cable,
and a precision DVM are all that is needed to perform basic
waveform and voltage checks for diagnostic purposes. The
Performance Check Procedure lists specific test equipment
necessary to adequately check out the instrument.

5-1

Maintenance—067-0916-00

TROUBLESHOOTING TECHNIQUES

This troubleshooting procedure is arranged in an order
that checks the simple trouble possibilities before proceed¬
ing to extensive troubleshooting.

Control Settings

Incorrect control settings can appear to be an equipment
problem. If there is any question about the correct function
or operation of any control, see the operation instructions in
Section 2.

tem or test setup, also check control settings of the other
instruments in the setup. Check for proper interconnections
between the power module and the plug-in module. Check
that the signal is properly connected and that the
interconnecting cables and signal source are not defective.
Check the power source.

other VAC known to be good into the power module. If the
trouble persists after substitution, move the VAC to other
compartments in the power module to determine if the trou¬
ble is confined to one compartment or is common to all of
them.

If the VAC is operating as part of an interconnected sys¬

If the power module is suspected, try substituting an¬

Observe the following precautions to avoid damage:

1. Minimize handling of static-sensitive components.

2. Transport and store static-sensitive components or
assemblies in their original containers, on a metal rail, or on
conductive foam. Label any package that contains static­sensitive assemblies or components.

3. Discharge
ing a grounded wrist strap while handling these compo¬
nents. Servicing static-sensitive assemblies or components
should be performed only at a static-free work station by
qualified service personnel.

4. Nothing capable of generating or holding a static
charge should be allowed on the work station surface.

5. Keep the component leads shorted together whenever
possible.

6. Pick up components by the body, never by the leads.

7. Do

the static voltage from your body by wear¬

not slide the components over any surface.

Visual Check

Remove the covers from the VAC and look for broken
wires, loose or unsoldered connections, or damage to the
circuit boards. If components damaged from overheating
are found, determine the cause of overheating before re¬
placing the component; otherwise, the new component may
also be damaged.

Static-Sensitive Components

Static discharge can damage any semiconductor

component in this instrument.

This instrument contains electrical components that are
susceptible to damage from static discharge. See Table 5-1
for relative susceptibility
semiconductors. Static voltages of 1 kV to 30 kV are com¬
mon in unprotected environments.

of

various classes

of

Table 5-1

Microcircuits with MOS

inputs

Schottky TTL

High-frequency bipolar transistors

Linear microcircuits

Low-power Schottky TTL

TTL

a

Voltage equivalent for levels:

1 = 100 to 500 V
2 = 500 V
3 = 400 to 500 V

(Voltage discharged from a 100 pF capacitor through a resis¬
tance of 100 ft.)

RELATIVE SUSCEPTIBILITY TO

STATIC DISCHARGE DAMAGE

Semiconductor Classes

(most sensitive)

(least sensitive)

4 = 400 to 1000 V (est.)
5 = 900 V
6 = 1200 V

Relative

Susceptibility

Levels3

1

2

3

4

5

6

5-2

Maintenance—067-0916-00

8. Avoid handling components in areas that have a floor
or work surface covering capable of generating a static
charge.

1 I I o A o orvIrJrvKinn

j

■ woo

a

ouiuci

ii iy

■

: ui i u iai so uUi a icoicu tu cai u i Ui uus iU.

io

mva. .x.^1

10. Use only special antistatic suction-type or wick-type

desoldering tool.

Test Equipment

Before using any test equipment to make measurements
on static-sensitive components or assemblies, be certain
that any voltage or current supplied by the test equipment
does not exceed the limits of the component to be tested.

Circuit Isolation

Note the symptom. It often identifies the circuit in which

the trouble is located. When trouble symptoms appear in

more than one circuit, check the affected circuits by making

waveform and voltage measurements.

A good check of transistor operation is actual perfor¬

mance under operating conditions. A transistor can most

effectively be checked by substituting a new component for

it (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. Static-type testers
are not recommended since they do not check operation
under simulated operating conditions. An antistatic suction­type desoldering tool can be used to remove soldered-in
transistors; see component replacement procedure for
details.

Integrated circuits can be checked with a voltmeter, test
oscilloscope, or by direct substitution. A good understand¬
ing of the circuit description is essential to troubleshooting
circuits containing integrated circuits. Operating waveforms,
logic levels, and other operating information for the integrat¬
ed circuits are given in the circuit description information.
Use care when checking voltages and waveforms around

the integrated circuits so that adjacent leads are not shorted
together. A convenient means of clipping a test probe to the

14- and 16-pin in-line integrated circuits is with an integrated

circuit test clip.

Incorrect operation of all circuits often means trouble in
power supplies. Using a multimeter, check first for correct
voltages of the individual regulated supplies according to the
circuit diagrams and adjustment procedures. Then check
the unregulated supplies of the power modules. Defective
components elsewhere in the instrument can appear as
power supply problems. In these instances, suspected cir¬
cuits should be disconnected from apparently bad power
supplies one at a time to narrow the search.

Voltages and Waveforms

Often defective components can be located by using
waveform and voltage indications when they appear on the
circuit diagram and in the theory of operation sections. Such
waveforms and voltage labels are typical indications and will
vary between instruments.

Component Checking

If a component cannot be disconnected from its circuit,

the effects of the associated circuitry must be considered
when evaluating the measurement. Except for soldered-in
transistors and integrated circuits, most components can be
unsoldered and lifted at one end from the circuit board.

Replacement semiconductors should be of the original
type or a direct replacement. Figure 5-1 shows the lead con¬
figuration of the semiconductors used in this instrument sys¬
tem.

An extracting tool should be used to remove the 14- and

16-pin integrated circuits to prevent damage to the pins.

This tool is available from Textronix, Inc. See Maintenance
Aids. If an extracting tool is not available, use care to avoid
damaging the pins. Pull slowly and evenly on both ends of
the integrated circuit. Try to avoid having one end of the
integrated circuit disengage from the socket before the oth¬
er end.

Diodes

Ordinary signal diodes may be checked for an open or
shorted condition by measuring the resistance between the
terminals. With the ohmmeter set to the R XI000 scale, the
resistance should be very high in one direction and very low
when the leads are reversed.

Resistors

Transistors and Integrated Circuits (1C)

Turn the power switch off before removing or replacing

any semiconductor. See Fig. 5-1 for semiconductor basing.

Check resistors with an ohmmeter. Resistor tolerances
are given the Replaceable Electrical Parts list. Resistors do
not normally to be replaced unless the measured value
varies widely from the value.

5-3

Fig. 5-1. Semiconductor Basing.

Circuit Board Removal

NOTE

Tag or note the locations of all leads and plugs for

reassembly reference.

For easier access to the two main boards of the VAC
(A3 and A4) the Logic board A4 may be removed and
laid flat with respect to the bottom of the instrument
(illustrated in Fig. 5-2). This also makes removal of
most components possible without having to com¬
pletely remove either of the main boards.

5-4

To remove the Logic board A4 (left side of instrument)
completely, or for troubleshooting purposes to the position
described above, follow these steps.

REMOVE:

1. The two side covers; grasp the cover at the rear of the
VAC and pull away from the chassis.

2. The top and bottom covers; there are two screws
holding each of the covers.

3. The back panel; four screws and two locating posts
hold the back panel.

Maintenance—067-0916-00

Fig. 5-2. A4 Logic Board position for troubleshooting.

4. The Logic board; four screws hold the logic board to
the nut blocks and top and bottom extrusions. Remove
the screws from the left side of the Logic board, leaving
the nut blocks. Two each are located on the top and
bottom of the VAC’s chassis. Pry the top and bottom of
the chassis away from each other near the Logic board
and slip either the top or bottom of the board out of its
groove. The Logic board is now free to either be slipped
into the side cover groove for troubleshooting or com¬
pletely removed by disconnecting
interconnecting cables.

all of the

PARTS ORDERING AND REPLACING

Ordering

ment parts can be obtained through the local Tektronix Field
Office or representative. However, many of the standard
electronic components can be obtained locally. Before pur¬
chasing or ordering replacement parts, check the Replace¬
able Parts lists for value, tolerance, rating, and description.
When selecting replacement parts, it is important to remem¬
ber that the physical size and shape of the component may
affect its performance in an instrument. All replacement
parts should be direct replacements unless it is known that
a different component will not adversely affect the instru¬
ment performance.

by Tektronix, Inc., to satisfy particular requirements, or are
manufactured for Tektronix, Inc.to our specifications. Most
of the mechanical parts used in this system have been man¬

ufactured by Tektronix, Inc. Order all special parts directly

from the local Tektronix Field Office or representative.

from Tektronix, Inc. please include the following minimum

information:

bration Fixture).

number).

Standard Parts. All electrical and mechanical replace¬

Special Parts. Some parts are manufactured or selected

Ordering Procedure. When ordering replacement parts

1. Instrument type (067-0916-00 Variable Amplitude Cali¬

2. Instrument

3. A description of the part (if electrical, include the circuit

serial number (for example, B010165).

To remove the DAC board A3, continue with the follow¬

ing steps.

REMOVE:

1. Heatsink screws; located on the bottom at the rear of

the VAC.

2. All interconnecting cables to the board.

3. Board retaining screws; four screws hold the board in
place. Two each are located at the top and at the bottom

of the VAC chassis. The nut blocks should be left at¬

tached to the circuit board.

4. The DAC board A3; by pulling straight back, the board
will slide out of the chassis.

4. T

ektronix part number.

Please do not return any instruments or parts before re¬

ceiving directions from Tektronix, Inc.

A listing of Tektronix Field Offices, Service Centers, and

Representatives can be found in the Tektronix Products

catalog and supplements.

CUSTOMIZING

Customizing the Interface

Input and output access to the VAC is available at the
rear of the DAC board A3. Figure 5-3 identifies the contacts
and their respective I/O assignments.

5-5

Maintenance—067-0916-00

USING THE REAR INTERFACE

CONNECTORS

(See Figure 5-3)

Output

fier (U335) to the rear edge output connector pin 28A with

pin 27A used as signal ground. Unlike the front-panel OUT¬
PUT which has an output impedance of 37.5 12, the rear­panel output has an output impedance of 0 12.

aUses 2A
bUses 0.4A Fast-blow

This terminal is connected directly from the output ampli¬

-f 11.5 Vdc Fuse-protected

-33.5 Vdc Fuse-protected

+33.5 Vdc Fuse-protected

Fast-blow

REAR INTERFACE CONNECTOR ASSIGNMENTS

Power Supply Ground
Power Supply Ground

Power Supply Ground

Remote Chop Control
Remote Chop Ground

DAC BOARD A3

B

NC

NC
NC
NC

NC
NC

NC
NC

NC
NC
NC
NC
NC
NC
NC
NC
NC

NC
NC
NC

Remote Operate

The switched dc rate of the output may be remotely con¬
trolled through this terminal for special applications that re¬
quire a controlled or different rate of switched dc output.
The Operate Mode jumper P359 must be moved to its 3-5
position which disables the VAC’s internal Chop signal and
connects the Remote Operate terminal through a 100 12 re¬
sistor to the buffer enable inputs of U453 and U457. A ‘low’
will enable the buffers to pass addressing information to the
16-bit DAC (U345) which provides the OUTPUT reference
level. A ‘high’ will not enable the buffers to pass the ampli¬
tude data to the 16-bit DAC, therefore leaving the OUTPUT
at a low reference state. Pin 24B is the signal input with pin
25B used as signal ground.

PIN # A

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18

19
20
21
22
23
24
25
26
27
28

NC
+ 11.5 Vdc Fuse-protected'
Power Supply Ground
Power Supply Ground
NC
NC
NC

-33.5 Vdc Fuse-protectedb
Power Supply Ground
NC
NC
+33.5 Vdc Fuse-protected1
NC
NC

NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Signal Output Ground
Signal Output

5-6

Fig. 5-3. Rear Interface Connector Assignments.

Maintenance—067-0916-00

Table 5=2

MAINTENANCE AIDS

The following maintenance aids include items required for some maintenance procedures in this instrument.

Description

1. Soldering Iron

2. Screwdrivers

3. Nutdrivers

4. Open-End Wrench

5. Solder Wick

6. Spray Cleaner

7. Vacuum Desoldering Tool

8. I.C. Extracting Tool

3/16", 3/8"

3/16", 1/4", 7/16"

No Noise

Antistatic

Specifications

15 Watt

Phillips #1 tip
Phillips #2 tip

General soldering and unsoldering.

Assembly and disassembly.

General

General

All push button switches.

General

General

Unsoldering

Use

Section 6-067-0916-00

OPTIONS

These are no options for the 067-0916-00 Variable Amplitude Calibration Fixture at the time of this printing.

SECTION 7-067-091 6-00 VIDEO AMPLITUDE CALIBRATION FIXTURE

REPLACEABLE

ELECTRICAL PARTS

PARTS ORDERING

Replacement parts are available from orthrough 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, instrument
type or number, serial 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.

SPECIAL NOTES AND SYMBOLS

X000

Part first added at this serial number

00X Part removed after this serial number

INFORMATION

ITEM NAME

In the Parts List, an Item Name is separated from the description by a colon (:).
Because of space limitations, an Item Name may sometimes appear as incomplete. For
further Item Name identification, the U.S. Federal Cataloging Handbook H6-1 can be
utilized where possible.

ABBREVIATIONS

ACTR
ASSY
CAP
CER
CKT
COMP
CONN
ELCTLT ELECTROLYTIC
ELEC
INCAND
LED
NONWIR

ACTUATOR
ASSEMBLY
CAPACITOR
CERAMIC
CIRCUIT
COMPOSITION
CONNECTOR

ELECTRICAL
INCANDESCENT
LIGHT EMITTING DIODE
NON WIREWOUND

PLSTC
QTZ
RECP

RES
RF
SEL
SEMICOND
SENS
VAR
WW
XFMR
XTAL

PLASTIC
QUARTZ
RECEPTACLE
RESISTOR

RADIO FREQUENCY
SELECTED
SEMICONDUCTOR
SENSITIVE
VARIABLE
WIREWOUND
TRANSFORMER
CRYSTAL

Cd>

7-1

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

Electrical Parts

Mfr. Code

00853
01121
01295

02111
02735
04713
07263

13919

15454
18324
24355
24546

27014
33096
55210
56289
71590

72619
72982
73138
75042

75915
80009
91637

CROSS INDEX-MFR. CODE NUMBER TO MANUFACTURER

SANGAMO ELECTRIC CO., S. CAROLINA DIV.
ALLEN-BRADLEY COMPANY
TEXAS INSTRUMENTS, INC., SEMICONDUCTOR
GROUP

SPECTROL ELECTRONICS CORPORATION

RCA CORPORATION, SOLID STATE DIVISION
MOTOROLA, INC., SEMICONDUCTOR PROD. DIV.
FAIRCHILD SEMICONDUCTOR, A DIV. OF
FAIRCHILD CAMERA AND INSTRUMENT CORP.
BURR-BROWN RESEARCH CORPORATION

RODAN INDUSTRIES, INC.

SIGNETICS CORP.
ANALOG DEVICES INC.

CORNING GLASS WORKS, ELECTRONIC

COMPONENTS DIVISION
NATIONAL SEMICONDUCTOR CORP.

COLORADO CRYSTAL CORPORATION
GETTIG ENG. AND MFG. COMPANY

SPRAGUE ELECTRIC CO.

CENTRALAB ELECTRONICS, DIV. OF

GLOBE-UNION, INC.

DIALIGHT, DIV. AMPEREX ELECTRONIC

ERIE TECHNOLOGICAL PRODUCTS, INC.

BECKMAN INSTRUMENTS, INC., HELIPOT DIV.

TRW ELECTRONIC COMPONENTS, IRC FIXED

RESISTORS, PHILADELPHIA DIVISION

LITTELFUSE, INC.

TEKTRONIX, INC.

DALE ELECTRONICS, INC.

Manufacturer

Address

P 0 BOX 128
1201 2ND STREET SOUTH
P 0 BOX 5012, 13500 N CENTRAL
EXPRESSWAY
17070 EAST GALE AVENUE
ROUTE 202
5005 E MCDOWELL RD,PO BOX : 20923 PHOENIX, AZ 85036

464 ELLIS STREET
PO BOX 11400,6730
2905 BLUE STAR ST.
811 E. ARQUES
RT 1 INDUSTRIAL PK,P 0 BOX

550 HIGH STREET
2900 SEMICONDUCTOR DR.
2303 W 8TH STREET
PO BOX 85, OFF ROUTE 45
87 MARSHALL ST.

P 0 BOX 858
203 HARRISON PLACE
644 W. 12TH ST.
2500 HARBOR BLVD.

401 N. BROAD ST.
800 E. NORTHWEST HWY
P 0 BOX 500
P. 0. BOX 609

S

TUCSON

BLVD.

280

City, State, Zip

PICKENS, SC 29671
MILWAUKEE, WI 53204

DALLAS, TX 75222

CITY OF INDUSTRY, CA 91745
SOMERVILLE, NY 08876

MOUNTAIN VIEW, CA 94042

TUCSON, AZ 85706

ANAHEIM, CA 92806

SUNNYVALE, CA 94086
NORWOOD, MA 02062

BRADFORD, PA 16701
SANTA CLARA, CA 95051
LOVELAND, CO 80537
SPRING MILLS, PA 16875
NORTH ADAMS, MA 01247

FORT DODGE, IA 50501

BROOKLYN, NY 11237
ERIE, PA 16512

FULLERTON, CA 92634

PHILADELPHIA, PA 19108
DES PLAINES, IL 60016
BEAVERTON, OR 97077
COLUMBUS, NE 68601

067“091 6“00 Video Amplitude Calibration Fixture—Replaceable Electrical Parts

Component No.

A1
A2
A3
A4

A1
A1S112
A1S116

A2

A2C215

A2C216
A2C285
A2C292
A2DS215

A2DS235
A2DS255
A2DS275
A2R263
A2R269
A2R287

A2R288
A2U295

Tektronix

Part No.

670-6658-00
670-6659-00
672-0983-00
670-6660-00

670-6658-00
263-0080-00
263-0079-00

670-6659-00
290-0745-00
281-0775-00
281-0773-00
283-0026-00
150-1013-00

150-1013-00
150-1013-00
150-1013-00
315-0102-00
315-0274-00
315-0105-00

315-0103-00
156-0402-02

Serial/Model No.

Eft

Dscont

ASSEMBLIES

CKT BOARD ASSY:SWITCH
CKT BOARD ASSY:DISPLAY
CKT BOARD ASSY:DAC
CKT BOARD ASSY:LOGIC

A1 SWITCH

CKT BOARD ASSY:SWITCH

SWITCH,PB ASSY:4 LATCH,7.5MM,10 CONT
SWITCH,PB ASSY:8 LATCH,7.5MM,16 CONT

A2 DISPLAY

CKT BOARD ASSY:DISPLAY
CAP.,FXD,ELCTLT:22UF,+50-10%,25V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.01UF,10%,100V
CAP.,FXD,CER DI:0.2UF,+80-20%,25V
LAMP,LED:READOUT

LAMP,LED:READOUT
LAMP,LED:READOUT
LAMP,LED:READOUT
RES.,FXD,CMPSN:IK OHM,5%,0.25W
RES.,FXD,CMPSN:27OK OHM,5%,0.25W
RES.,FXD,CMPSN:1M OHM,5%,0.25W

RES.,FXD,CMPSN:10K OHM,5%,0.25W

MICROCIRCUIT,LI'.TIMER CHECKED

Name

&

Description

Mfr

Code

Mfr Part Number

80009

670-6658-00

80009
80009
80009

80009
80009
80009

80009
56289
72982
72982
56289
01295

01295
01295
01295
01121
01121
01121

01121
27014

670-6659-00
672-0983-00
670-6660-00

670-6658-00
263-0080-00
263-0079-00

670-6659-00
502D225
8005D9AABZ5U104M
8005H9AADW5R103K
274C3
TIL311

TIL311
TIL311
TIL311
CB1025

CB2745

CB1055

CB1035

SL34829/A+

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

Electrical Parts

Component No.

A3
A3C313
A3C323
A3C324
A3C326
A3C333

A3C336
A3C337
A3C344
A3C345
A3C346
A3C364

A3C365
A3C368
A3C369
A3C371
A3C381
A3C382

A3C385
A3C386
A3C388
A3C389
A3C391
A3C392

A3C395
A3C396
A3C397
A3C398
A3C399
A3CR371

Tektronix Serial/Model No.

Eft

Part No.

672-0983-00
281-0775-00
281-0775-00
283-0666-00
283-0648-00
281-0775-00

283-0780-00
281-0775-00
281-0775-00
281-0775-00
281-0775-00
281-0775-00

290-0745-00
290-0745-00
281-0775-00
281-0775-00
281-0775-00
290-0745-00

281-0775-00
290-0779-00
281-0775-00
290-0779-00
281-0775-00
290-0745-00

281-0775-00
290-0779-00
281-0775-00
290-0779-00
281-0812-00
152-0141-02

Dscont

A3 DAC

CKT BOARD ASSY:DAC
CAP.
CAP.
CAP. ,FXD,MICA D:890PF,2%,100V
CAP.
CAP.

CAP.
CAP.
CAP.
CAP.
CAP.
CAP.

CAP.
CAP.
CAP.
CAP.
CAP.
CAP.

CAP.
CAP.
CAP.
CAP. ,FXD,ELCTLT:1OUF,+5 0-10%,5OVDC
CAP.
CAP.

CAP.
CAP.
CAP.
CAP.
CAP.
SEMICOND DEVICE:SILICON,30V,150MA

Name & Description

,FXD,CER DI:0.1UF,20%,50V

,FXD,CER DI:0.1UF,20%,50V

,FXD,MICA D:10PF,5%,100V
,FXD,CER DI:0.1UF,20%,50V

,FXD,MICA DI:125PF,1%,500V

,FXD,CER DI:0.1UF,20%,50V
,FXD,CER DI:0.1UF,20%,50V
,FXD,CER DI:0.1UF,20%,50V
,FXD,CER DI:0.1UF,20%,50V
,FXD,CER DI:0.1UF,20%,50V

, FXD,ELCTLT:22UF, + 50-10% ,25V
,FXD,ELCTLT:22UF,+50-10%, 25V
,FXD,CER DI:0.1UF,20%,50V
,FXD,CER DI:0.1UF,20%, 50V
,FXD,CER DI:0.1UF,20%,50V
, FXD,ELCTLT:22UF,+ 50-10%,25V

,FXD,CER DI:0.1UF,20%,50V

,FXD,ELCTLT:10UF,+50-10%,50VDC
,FXD,CER DI:0.1UF,20%,50V

,FXD,CER DI:0.1UF,20%,50V
, FXD,ELCTLT:22UF,+ 50-10%,25V

,FXD,CER DI:0.1UF,20%,50V
,FXD,ELCTLT:1OUF,+50-10%,50VDC
,FXD,CER DI:0.1UF,20%,50V
,FXD,ELCTLT:10UF,+50-10%,50VDC
,FXD,CER DI:1000PF,10%,100V

Mfr

Code

Mfr Part Number

80009
72982
72982
00853
00853
72982

00853
72982
72982
72982
72982
72982

56289 502D225
56289
72982
72982 8005D9AABZ5U104M
72982
56289

72982 8005D9AABZ5U104M
56289
72982 8005D9AABZ5U104M
56289
72982
56289 502D225

72982 8005D9AABZ5U104M
56289
72982 8005D9AABZ5U104M
56289
72982
01295

672-0983-00
8005D9AABZ5U104M

8005D9AABZ5U104M
D151F891G0
D151C100D0

8005D9AABZ5U104M

D155E1250F0

8005D9AABZ5U104M

8005D9AABZ5U104M

8005D9AABZ5U104M

8005D9AABZ5U104M

8005D9AABZ5U104M

502D225

8005D9AABZ5U104M

8005D9AABZ5U104M

502D225

502D237

502D237
8005D9AABZ5U104M

502D237

502D237
8035D9AADX7R102K

1N4152R

A3CR372
A3CR373
A3CR373
A3CR376
A3CR377
A3CR378

A3CR379
A3CR380
A3F382
A3F386
A3F388
A3Q391

A3Q392
A3Q395
A3Q396
A3Q397
A3Q398
A3R323

A3R324
A3R325
A3R326
A3R327
A3R328
A3R329

A 3 R 3 3 3

152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02

152-0141-02
152-0141-02
159-0128-00
159-0102-00
159-0102-00
151-0476-00

151-0407-00
151-0482-00
151-0406-00
151-0476-00
151-0407-00
321-0193-07

321-0510-00
131-0566-00
321-0280-00
321-0305-00
321-0427-00
311-1238-00

325-0357-00

SEMICOND DEVICE:SILICON,30V,15OMA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
FUSE ,CARTRIDGE:2A,125V,5 SEC

FUSE , CARTRIDGE:WIRE LEAD,0.4A,FAST-BLOW
FUSE , CARTRIDGE:WIRE LEAD,0.4A,FAST-BLOW
TRANSISTOR:SILICON,NPN

TRANSISTOR:SILICON,NPN
TRANSISTOR:SILICON,PNP
TRANSISTOR:SILICON,PNP
TRANSISTOR:SILICON,NPN
TRANSISTOR:SILICON,NPN

,FXD,FILM:IK OHM,0.1%,0.125W

RES.

RES.

,FXD,FILM:2M OHM,1%,0.125W
BUS CONDUCTOR:DUMMY RES,2.375,22 AWG
RES.

,FXD,FILM:8.06K OHM,1%,0.125W

RES.

,FXD,FILM:14.7K OHM,1%,0.125W
RES.

,FXD,FILM:274K OHM,1%,0.125W

RES.

,VAR,NONWIR:5K OHM,10%,0.50W

RES.

,FXD,FILM:800 OHM,0.1%,0.1W

1N4152R

01295
01295
01295
01295
01295
01295

01295

01295

75915

75915 273.400
75915 273.400
02735 68430

04713 SS2456
80009
01295
02735 68430
04713
91637

91637

55210
91637
91637
24546
73138

91637

1N4152R
1N4152R
1N4152R

1N4152R
1N4152R
273002

151-0482-00
SGC7282

SS2456
MFF1816C10000B

HFF188G20003F
L-2007-1
MFF1816G80600F

MFF1816G14701F

NA55D2743F

72X-27-0-502K

PTF55T16800 OHM

1N4152R
1N4152R

7-4

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

Electrical Parts

Component No.

A3R334
A3R335
A3R336
A3R337
A3R338

A3R339

A3R344
A3R345
A3R346
A3R348
A3R349
A3R351

A3R355
A3R358
A3R361
A3R362
A3R364
A3R365

A3R366
A3R371
A3R372
A3R373
A3R374
A3R375

A3R376
A3R381
A3R383
A3R384
A3R387
A3R388

A3R389
A3R391
A3R395
A3R397
A3S310
A3S311

A3S312
A3S313
A3S314
A3S326
A3TP336
A3U335

A3U343

Tektronix

Part No.

321-0793-07
307-0642-00

311-1245-00
321-0388-00
311-1336-00
311-1336-00

315-0101-00
325-0357-00
311-1245-00
315-0915-00
311-1336-00
307-0446-00

307-0446-00
321-0926-07
321-0281-06
321-0264-07
321-0281-06
321-0281-06

321-0264-07
321-0252-00
321-0707-00
321-0264-07

315-0332-00

321-0281-06

321-0951-02

308-0755-00

307-0056-00
315-0681-00
307-0056-00
315-0681-00

315-0101-00
315-0102-00
315-0102-00
315-0102-00
263-0010-00
263-0010-00

263-0010-00
263-0010-00
263-0010-00
263-0079-00
214-0579-00
156-1338-00

Serial/Model No.

Eft

Dscont

A3 DAC (CONT)

RES FXD, FILM : 37.5 OHM, 0.1 % 0 _ 1 2 5W

RES.,THERMAL:1OK OHM,5%,25DEG C
RES.,VAR,NONWIR:10K OHM,10%,0.50W
RES.,FXD,FILM:107K OHM,1%,0.125W
RES.,VAR,NONWIR:100K OHM,0.50W
RES.,VAR,NONWIR:100K OHM,0.50W

RES.,FXD,CMPSN:100 OHM,5%,0.25W
RES.,FXD,FILM:800 OHM,0.1%,0.1W
RES.,VAR,NONWIR:10K OHM,10%,0.50W
RES.,FXD,CMPSN:9.1M OHM,5%,0.25W
RES.,VAR,NONWIR:100K OHM,0.50W
RES,NTWK,FXD FI:10K OHM,20%,(9) RES

RES,NTWKjFXD FI:10K OHM,20%,(9) RES
RES.,FXD,FILM:4K OHM,0.1%,0.125W

RES.,FXD,FILM:8.25K

RES.,FXD,FILM:5.49K
RES.,FXD,FILM:8.25K

RES.,FXD,FILM:8.25K

RES.,FXD,FILM:5.49K
RES.,FXD,FILM:4.12K
RES.,FXD,FILM:16.5K
RES.,FXD,FILM:5.49K
RES.,FXD,CMPSN:3.3K OHM,5%,0.25W
RES.,FXD,FILM:8.25K

RES.,FXD,FILM:5.52K
RES.,FXD,WW:0.75 OHM,5%,2W
RES.,FXD,CMPSN:4.3 OHM,5%,0.50W
RES.,FXD,CMPSN:680 OHM,5%,0.25W
RES.,FXD,CMPSN:4.3 OHM,5%,0.50W
RES.,FXD,CMPSN:680 OHM,5%,0.25W

RES.,FXD,CMPSN:100 OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W

SWITCH PB ASSY:1 PUSH,7.5MM,W/2 CONTACTS
SWITCH PB ASSY:1 PUSH,7.5MM,W/2 CONTACTS

SWITCH PB ASSY:1 PUSH,7.5MM,W/2 CONTACTS
SWITCH PB ASSY:1 PUSH,7.5MM,W/2 CONTACTS
SWITCH PB ASSY:1 PUSH,7.5MM,W/2 CONTACTS

SWITCH,PB ASSY:8 LATCH,7.5MM,16 CONT
TERM,TEST POINT:BRS CD PL
MICROCIRCUIT,LI:OPERATIONAL AMPLIFIER
MICROCIRCUIT,LI:BCD,DAC,4 DIGIT

Name & Description

OHM,0.25%,0.125W
OHM,0.1%,0.125W
OHM,0.25%,0.125W

OHM,0.25%,0.125W

OHM,0.1%,0.125W
OHM,1%,0.125W
OHM,0.5%,0.125W
OHM,0.1%,0.125W

OHM,0.25%,0.125W

OHM,0.5%,0.125W

Mfr

Code

Mfr Part Number

Q I

f. Q 7

15454
73138
91637 MFF1816G10702F
02111
02111

01121
91637 PTF55T1800 OHM
73138 72-28-0
01121
02111
91637

91637
91637 MFF1816C40000B
91637 MFF1816C82500C
91637
91637

91637

91637
91637
91637
91637
01121
91637

24546 NA55D33R2F
75042
01121
01121 CB6815
01121
01121

01121
01121
01121
01121
80009 263-0010-00
80009 263-0010-00

80009 263-0010-00
80009 263-0010-00
80009
80009 263-0079-00
80009 214-0579-00
18324

f.MFI 1 021 6C37R50B
DG125103J
72-28-0

43P104
43P104

CB1015

CB9155
43P104

MSP10A01-103M

MSP10A01-103M

MFF1816C54900B
MFF1816C82500C
MFF1816C82500C

MFF1816C54900B
MFF1816G41200F
MFF1816G16501D
MFF1816C54900B
CB3325
MFF1816C82500C

BWH-R7500J
EB43G5

EB43G5
CB6815

CB1015
CB1025
CB1025
CB1025

263-0010-00

NE5534N

A3U348
A3U353
A3U357
A3U368
A3U371
A3U375

A3U378
A3VR378
A3VR385

156-1409-01
156-0956-02
156-0956-02
156-1249-00
156-0067-12
156-0067-12

156-0067-12
152-0291-00

152-0291-00

MICROCIRCUIT,LI:D/A CONV,BCD CODE,CUR OUT
MICROCIRCUIT,DI:OCTAL BFR W/3STATE OUT
MICROCIRCUIT,DI:OCTAL BFR W/3STATE OUT
MICROCIRCUIT,LI:VOLTAGE REFERENCE
MICROCIRCUIT,LI:OPERATIONAL AMPLIFIER
MICROCIRCUIT,LI:OPERATIONAL AMPLIFIER

MICROCIRCUIT,LI:OPERATIONAL AMPLIFIER

SEMICOND DEVICE:ZENER,1W,20V,5%
SEMICOND DEVICE:ZENER,1W,20V,5%

13919
01295
01295
24355 AD40227
04713
04713

04713
04713
04713

DAC80-CCD-1
SN74LS244NP3
SN74LS244NP3

MC1741CU

1N3027B

1N3027B

MC1741CU

MC1741CU

067-091 6-00 Video Amplitude Calibration Fixture—Replaceable Electrical Parts

Component No.

Tektronix

Part No.

Serial/Model No.

Eft

Dscont

A4 LOGIC

Name & Description

Mfr

Mfr Part Number

Code

A4
A4C414
A4C416
A4C424
A4C431
A4C455

A4C456
A4C457
A4C465
A4C466
A4C470
A4C473

A4C476
A4C477
A4C480
A4C484

A4C486

A4C488

A4CR410

A4CR430

A4CR431

A4CR432

A4CR433

A4CR436

A4CR437
A4CR438
A4CR439
A4CR440
A4CR441
A4CR442

A4CR443
A4CR446
A4CR447
A4CR448
A4CR449
A4CR450

A4CR451
A4CR461
A4CR462
A4CR463
A4CR487
A4Q428

A4Q431
A4Q460
A4Q461
A4Q462
A4Q474
A4Q473

A4Q47 7

A4Q497
A4R410
A4R412
A4R418

A4R419

A4R421

670-6660-00
281-0775-00
281-0775-00
281-0775-00
281-0762-00
290-0745-00

290-0745-00
281-0775-00
281-0762-00
290-0745-00

290-0244-00

281-0775-00

283-0779-00
283-0632-00
281-0775-00
281-0775-00
281-0775-00
281-0773-00

152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02

152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02

152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02

152-0141-02
152-0141-02
152-0141-02
152-0141-02
152-0141-02
151-0459-00

151-0459-00

151-0459-00

151-0460-00
151-0301-01
151-0460-00
151-0460-00

151-0459-00
151-0460-00
315-0822-00
315-0133-00
315-0202-00
315-0102-00

315-0102-00

CKT BOARD ASSY:LOGIC
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:27PF,20%,100V
CAP.,FXD,ELCTLT:2 2UF, + 50-10%,2 5V

CAP.,FXD,ELCTLT:2 2UF,+50-10%,25V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:27PF,20%,100V
CAP.,FXD,ELCTLT:22UF,+50-10%,25V
CAP.,FXD,ELCTLT:0.47UF,5%,35V
CAP.,FXD,CER DI:0.1UF,20%,50V

CAP.,FXD,MICA D:27PF,2%,500V
CAP.,FXD,MICA D:87PF,1%,100V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.1UF,20%,50V
CAP.,FXD,CER DI:0.01UF,10%,100V

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA

SEMICOND DEVICE:SILICON,30V,150MA
TRANS ISTOR:SILICON,PNP

TRANSISTOR:SILICON,PNP
TRANSISTOR:SILICON,PNP
TRANSISTOR:SILICON,NPN
TRANSISTOR:SILICON,PNP,PRESTRESSED
TRANSISTOR:SILICON,NPN

TRANSISTOR:SILICON,NPN

TRANSISTOR:SILICON,PNP

TRANS ISTOR:SILICON,NPN

RES.,FXD,CMPSN:8.2K OHM,5%,0.25W

RES.,FXD,CMPSN:13K OHM,5%,0.25W

RES.,FXD,CMPSN:2K OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W

80009
72982
72982
72982
72982
56289

56289
72982
72982

56289
56289
72982

00853 D155E270G0
00853

72982
72982
72982
72982

01295

01295

01295

01295
01295
01295

01295
01295
01295
01295
01295
01295

01295
01295
01295
01295
01295
01295

01295
01295
01295
01295
01295
80009

80009
80009
80009
80009
80009
80009

01121 CB2025
01121

670-6660-00
8005D9AABZ5U104M
8005D9AABZ5U104M
8005D9AABZ5U104M
8035D9AADC0G270M
502D225

502D225
8005D9AABZ5U104M
8035D9AADC0G270M
502D225

162D474X5035BC2

8005D9AABZ5U104M

D151E870F0
8005D9AABZ5U104M
8005D9AABZ5U104M
8005D9AABZ5U104M
8005H9AADW5R103K

1N4152R
1N4152R
1N4152R
1N4152R
1N4152R
1N4152R

1N4152R
1N4152R
1N4152R
1N4152R
1N4152R
1N4152R

1N4152R
1N4152R
1N4152R
1N4152R
1N4152R
1N4152R

1N4152R
1N4152R
1N4152R
1N4152R
1N4152R
151-0459-00

151-0459-00
151-0459-00
151-0460-00

151-0301-01
151-0460-00
151-0460-00

80009
80009
01121
01121 CB1335

01121

151-0459-00
151-0460-00

CB8225

CB1025

CB1025

7-6

(a)

087“091 6-00 Video Amplitude Calibration Fixture—Replaceable

Electrical Parts

Component No.

A4R423
A4R431
A4R450
A4R451
A4R452
A4R453

A4R454
A4R461
A4R462
A4R463
A4R472
A4R475

A4R476
A4R477
A4R478
A4R479
A4R480
A4R487

A4R489
A4R498
A4U404
A4U406
A4U412

■

A4U414

A4U415
A4U416
A4U421
A4U423
A4U425
A4U426

A4U427

A4U442
A4U444
A4U446
A4U453
A4U454

A4U456
A4U458
A4U470
A4U473
A4U474
A4U482

A4U493
A4U494
A4U495
A4Y478
A4Y488

Tektronix Serial/Model No.

Part No.

315-0202-00
315-0273-00
321-0301-00
321-0257-00
321-0230-00
321-0182-00

307-0446-00
315-0102-00
315-0104-00
315-0103-00
315-0226-00
315-0161-00

315-0102-00
315-0473-00
315-0273-00
315-0682-00
321-0301-00
315-0391-00

315-0682-00
315-0222-00

156-0914-02
156-0914-02
156-0569-00
156-0569-00

156-0569-00
156-0569-00
156-1114-01
156-0953-02
156-0865-02
156-0953-02

156-0865-02
156-0953-02
160-0811-00
156-09-53-02
156-0383-00
156-0388-03

156-1176-01
156-1176-01
156-0402-02
156-0388-03
156-0382-02
156-0646-02

156-0646-02
156-0646-02
156-0646-02
158-0219-00
158-0220-00

Eft

A4 LOGIC (CONT)

Dscont

RES.jFXD,CMPSN:2K OHM.5%,0.25W
RES.,FXD,CMPSN:27K OHM,5%,0.25W
RES.,FXD,FILM:13.3K
RES.,FXD,FILM:4.64K
RES.,FXD,FILM:2.43K
RES.,FXD,FILM:768 OHM,1%,0.125W

RES,NTWK,FXD FI:10K OHM,20%,(9) RES
RES.,FXD,CMPSN:IK OHM,5%,0.25W
RES.,FXD,CMPSN:100K OHM,5%,0.25W
RES.,FXD,CMPSN:10K OHM,5%,0.25W

RES.,FXD,CMPSN:22M OHM,5%,0.25W
RES.,FXD,CMPSN:160 OHM,5%,0.25W

RES.,FXD,CMPSN:IK OHM,5%,0.25W
RES.,FXD,CMPSN:47K OHM,5%,0.25W

RES.,FXD,CMPSN:27K OHM,5%,0.25W

RES.,FXD,CMPSN:6.8K OHM,5%,0.25W
RES.,FXD,FILM:13.3K OHM,1%,0.125W

RES.,FXD,CMPSN:390 OHM,5%,0.25W

RES.,FXD,CMPSN:6.8K OHM,5%,0.25W
RES.,FXD,CMPSN:2.2K OHM,5%,0.25W
MICROCIRCUIT,DI:OCT ST BFR W/3 STATE OUT
MICROCIRCUIT,DI:OCT ST BFR W/3 STATE OUT
MICROCIRCUIT,DI:BCD COUNTER
MICROCIRCUIT,DI:BCD COUNTER

MICROCIRCUIT,DI:BCD COUNTER
MICROCIRCUIT,DI:BCD COUNTER
MICROCIRCUIT,LI:OPERATIONAL AMP,TESTED
MICROCIRCUIT,DI:4 BIT MAGNITUDE CMPRTR
MICROCIRCUIT,DI:OCTAL D-TYPE FF W/CLEAR
MICROCIRCUIT,DI:4 BIT MAGNITUDE CMPRTR

MICROCIRCUIT,DI:OCTAL D-TYPE FF W/CLEAR
MICROCIRCUIT,DI:4 BIT MAGNITUDE CMPRTR
MICROCIRCUIT,DI:2048 X 8 EPROM PROGRAMMED
MICROCIRCUIT,DI:4 BIT MAGNITUDE CMPRTR
MICROCIRCUIT,DI:QUAD 2-INPUT NOR GATE
MICROCIRCUIT,DI:DUAL D FLIP-FLOP

MICROCIRCUIT,DI:8/3 LINE PRIORITY ENCODER
MICROCIRCUIT,DI:8/3 LINE PRIORITY ENCODER
MICROCIRCUIT,LI/TIMER,CHECKED
MICROCIRCUIT,DI:DUAL D FLIP-FLOP
MICROCIRCUIT,DI:QUAD 2-INP NAND GATE
MICROCIRCUIT,DI:4 BIT BINARY COUNTER

MICROCIRCUIT,DI:4 BIT BINARY COUNTER
MICROCIRCUIT,DI:4 BIT BINARY COUNTER
MICROCIRCUIT,DI:4 BIT BINARY COUNTER

XTAL UNIT,QTZ:8.83852MHZ,0.005%

XTAL UNIT,QTZ:9.9112MHZ,0.005%

Name & Description

OHM,1%,0.125W
OHM,1%,0.125W
OHM,1%,0.125W

Mfr

Code

01121
01121
91637
91637
91637
91637

91637
01121
01121
01121
01121
01121

01121
01121
01121
01 121
91637
01121

01121
01121
01295
01295
27014
27014

27014
27014
80009
01295
01295
01295

01295
01295
80009
01295
80009
07263

80009
80009
27014
07263
01295
80009

80009
80009
80009

33096

33096

Mfr Part Number

CB2025
CB2735
MFF1816G13301F
MFF1816G46400F
MFF1816G24300F
MFF1816G768R0F

MSP10A01-103M
CB1025
CB1043
CB1033
CB2265
CB1615

CB1025
CB4735
CB2735
CB6825

MFF1816G13301F

CB3915

CB6825
CB2225
SN74LS240
SN74LS240
DM74LS190
DM74LS190

DM74LS190
DM74LS190
156-1114-01
SN74LS85
SN74LS273NP3
SN74LS85

SN74LS273NP3
SN74LS85

160-0811-00

SN74LS85

156-0383-00

74LS74D

156-1176-01
156-1176-01
SL34829/A+
74LS74D
SN74LS00

156-0646-02

156-0646-02

156-0646-02

156-0646-02
PB1336
P B1337

7-7

((0

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

Electrical Parts

Component No.

DS76

Rll
R36

S15\
S35(
S55(
S75'

Tektronix

Part No.

150-1052-00

311-0959-00
311-1310-00

260-2002-00

Serial/Model No.

Eft

Dscont

CHASSIS PARTS

LT EMITTING DIO:RED,655NM,50MA

RES.,VAR,WW:10K OHM,5%,1.5W
RES.,VAR,NONWIR:20K

SWITCH,LEVER:4 SECT,10 POSN,BCD CODING

Name & Description

OHM,20%,1W

Mfr

Code

Mfr Part Number

72619

559-0101-001

71590
01121

BA02510010
10M654

7-8

(('0

Refer to waveform; also, refer to VOLTAGE &

WAVEFORM CONDITIONS, if given, on title page.

Circuit block title is given on a gray tint

background.

Etched circuit board outlined in black.

Internal adjustment; use a screwdriver or low-

capacitance tuning tool, as required.

Test point.

Connector index; signifies pin No. 1.

Indicates wire from plug connector P180, Pin

No. 3, on diagram number^3^ .

Box around nomenclature indicates an externally

DS90

S92

I test]

JIOO

SYNC

,

LINE SYNC GEN

SETUP

?R 40

+ I5V

P 144-1

P 1 80-

P30O-I-

■

D

111

10k

_NO

TP46

O

U45'

74123

-H5V

•R43

■

3.01 k

+I5V

©

+5V

j

R50

49.9kg

7CR34

■

R6I

f4.3k

Q58

Qt

—15 V

R4fc<

7.5kl

+I5V

IP-

i^r-pao

I«

Pfl

7

accessible panel control or connector.

Female I

Screwdriver adjustment externally accessible

Coaxial connectors

through panel.

Multi-pin female plug connector.

Gray tint encloses a circuit area or block

according to function.

Interconnecting wire is soldered to circuit board.

AS TIMING BOARD

.340

Assembly number and name of etched circuit

board.

COMPONENT NUMBER EXAMPLE

SYS^C GENERATOR

This wire connects to R330 on diagram

number<^>.

Schematic diagram name and number.

<5]

Component Number

r~—

A23 A2 R1234

. ,,

Assembly

Chassis-mounted components have no Assembly Number
prefix—see end of Replaceable Electrical Parts List.

Number

_J

|

Subassembly

Number (if used)

Schematic

L_

Circujt

Number

SCHEMATIC EXAMPLE

2597-37

SECTION 8-067-0916-00

DIAGRAMS & CIRCUIT BOARD ILLUSTRATIONS

This section of the manual contains block and schematic diagrams with waveforms, and etched

circuit board illustrations.

Symbols

Symbols used on the diagrams are based on ANSI Y32.2-1970 and IEEE No. 315 March 1971. Logic symbology is

based on ANSI Y32.14-1973 (IEEE Std. 91-1973). Logic symbols depict the logic function performed and may differ

from the manufacturer’s data.

Component Values

Electrical components shown on the diagrams are in the following units unless noted otherwise:

Capacitors

Resistors = Ohms (Q).

Semiconductor

Types

Refer to the Electrical Parts List.

Reference Designators

=

Values one or greater are in picofarads (pF).
Values less than one are in micofarads

(nF).

The following letters are used as reference designators to identify components or assemblies on Tektronix, Inc.

schematic diagrams.

A
AT

B
BT
C

CR

DH
DL
DS
E
F
FL
H
HR

J

K
L

Assembly, separable or repairable (circuit board, etc.)
Attenuator, fixed or variable
Motor
Battery
Capacitor, fixed or variable
Diode, signal or rectifier
Decoupling Hybrid
Delay Line
Indicating device (lamp)
Spark Gap
Fuse
Filter
Heat dissipating device (heat sink, heat radiator, etc.)
Heater
Connector, stationary portion
Relay
Inductor, fixed or variable

Partial Schematic Diagram With Explanations

M
P
Q

R

RT
S
T
TC

TP

U

V
VR
Y

Inductor/resistor combination
Meter
Connector, movable portion
Transistor, silicon-controlled
mable unijunction transistor
Resistor, fixed or variable
Thermistors
Switch
T ransformer
Thermocouple
Test Point
Assembly, inseparable or non-repairable (integrated
circuit, etc.)
Electron tube
Voltage regulator (zener diode, etc.)
Crystal

rectifier, or program¬

LR

The partial diagram at the left is an example of the various symbols and other information provided on Tektronix,

Inc. diagrams.

BIASING

SEMICONDUCTOR

067-0916-00

FIGURE.

8-1

SEMICONDUCTOR

BIASING.

Q397

0

Q395

0

Q391

0

067-0916-00

R339

- GAIN

P359

OPERATE

F388

(J.4A

Q .4 A FAST F366 Q Q F368

O*

FAST

125 V

F386

125 V

F382

A FAST

125 V

SPARE FUSES

.4 A

MODE

2 A

2- 3 OPERATE
1-3 OFF
3- 4 ON
3-5 REMOTE

ADJUSTMENT

LOCATIONS

FIGURE 8-2- A3 DAC BOARD ADJUSTMENT LOCATIONS.

@

COUNTER

067

-

0916-00

@ 3<S>43-25

BLOCK DIAGRAM

LOCATIONS

BOARD

LOGIC
A4

COMPONENT

067-0916-00

1

2

3

4

5

E

i

Y478

Y488

jg ]

#

I

R479 i

<Y R478 4F

gfe R477 i '

'C4?7

(1>'R476/^

0g47fg-

/ #

^475|#

pj

' UL s <4 - ,,

R489

C488 S |

^R487S«D |

#R£87>@

^R498

i

#|C486l#

Iflli

U495 \

dl3yPyyb

Q-?-0.X ||1

U494

-a

■ \

SSS@§S@J J

BSiteifeiiij \

- U493

<r ;C47^!^

fbC480[^-

) R480 v

FIGURE 8-3. A4 LOGIC BOARD COMPONENT LOCATIONS.

ilf^68

/

U456

/ ifjsj " ' gi

Qk^. -.r.'.?:.

.TZZ**

■ P455 ■ ‘

"

<^|% //Si

-blbtblf

;; l l S

P%44 Ag

@ Iff @ ^ @

U446

r'

juuk

mmmmA

i

U444g§f f

5 ® 0 5 f| ©

s. I I \ V

,NA® V'"--CT

ijfiiiiif

1# 1

4HSjj

jgjsi

U470

(

III

#£R453

,, R452

I R451

r m<
I

(§84501

CR

45

@#031

NOTE: In Figure 8-3 the components are illustrated as if looking through the back of the board.

COMPONENT NUMBER EXAMPLE

Component Number

A23 A2 R1234

J

!

I

Number Subassembly Number

Chassis-mounted components have no Assembly Number
prefix—see end of Replaceable Electrical Parts List.

T L_*.

Number (if used)

Schematic

Circuit

Static Sensitive

See Maintenance

P449

C431 ■&

F

U427

U423 *^1

Devices

Section

(j;)

i

©

JJ.

•

C418

.

fm &

IJv^

IllMMMMMMMdi l)fim

lil]

f

U421

P412

R4.12}#

B*©*410

R410

LOGIC DIAGR

R41S

P418

U416

;

y?

(l I I

l

(§lj

P407:

TJ404,

U412

ASSEMBLY A4

CIRCUIT

NUMBER

C414
C416
C424
C431
C455
C456
C457
C465
C466
C470
C473
C476
C477
C480
C484
C486
C488

CR410
CR430
CR431
CR432
CR433
CR436

CR437
CR438
CR439
CR440
CR441
CR442
CR443
CR446
CR447
CR448
CR449
CR450
CR451
CR461
CR462
CR463
CR487

P404
P407

SCHEM

LOCATION

F3
F3
F3
F4
C2
C2
F3
F4
C2
B5
F3
B4
B4
C5
F3
F3
B4

C5
D2
D2
D2
D2
D1
D1
D1
D1
D2
D2
D2
D2
D1

D1
D1

D1
A5
A5

B5

B5

B5

B4

HI

HI

BOARD

LOCATION

H3
G2
F3
F4
C3
C3
D2
C3
C3
B4
B4
B2
B2
B5
B3
A2
A2

G5
E4
E4
E4
E4
El
El

El
El
E4
D4
D4
D4
El
D1
D1
D1
D5
D5
D4
C4
C4
A2

H5
H3

CHASSIS MOUWTED PARTS

CIRCUIT

NUMBER

DS76

SCHEM

LOCATION

H5

BOARD

LOCATION

CHASSIS

CIRCUIT

NUMBER LOCATION

P411
P412
P418
P431
P435
P435
P444
P444
P449
P455
P459
P468
P476

Q428
Q431
Q460
Q461
Q462
Q474
Q475
Q477
0497

R410
R412
R418
R419
R421
R423
R431
R450
R451
R452
R453
R454
R461
R462
R463
R472
R475

R476

R477

R478

CIRCUIT SCHEM

NUMBER

R11

SCHEM

BOARD

LOCATION

A5

H5
H4
H2
D2
A2
A3
A1
A4
D1
A4
A2
A1

H5

C3
C3
A5
A5

B5

B4
C4
A3
A4

C5

C5

C3

C3

C3

D3

C5

A5

A5

A5

B5

Cl

C5

B5

B5
B5
H5
B4
B4
B4

LOCATION LOCATION

A5

G4
HI
D5
E2
E2
D2
D2
FI
D2
D1
Cl
B2

G1
E4
C5
C5
C4
B3
B3
B2
A2

G5
G5
G1
G1

F4
F4
F5
D5
D5
D4
D4
D3
C4
D4
C4
B4
B3
B2
B2
B2

BOARD

CHASSIS

CIRCUIT SCHEM

NUMBER

R479
R480

NUMBER

LOCATION LOCATION

A3

R487
R489
R498

U404
U406
U412
U414
U415
U416
U421
U423
U425
U426
U427
U442
U444
U446
U453A
U453B
U453C
U453D
U454A
U454B
U456

U458
U470
U473A
U473B
U474A
U474B
U474C
U474D
U482
U493
U494
U495

Y478
Y488

CIRCUIT SCHEM

A5
B4
A4
C3

H2
HI
G4
G3
G2
G1
D5
E3
F2
E2
FI
E3

B1
El
D4

D5

F4

D4

F4

F4
A1
A3

C5

E4

G5

E4

E5

C4

F3

D4

D5

C5

C3

A4

A4

LOCATION

BOARD

B2
B5
A2
A2
A2

H3
H2
G4
G3
G3
G2
F4
F3
F3
F2
FI
E4
E3
E2
C4
C4
C4
C4
C3
C3
C2
Cl

B5
B4

!
B4
S3
B3
B3

|
B3
B4

:

A4
A3

A3

B1
A1

BOARD

LOCATION

3643-22

LOGIC

067-0916-00

K

B

H

.i ft ¥ "T

■ = it fa • '■.

. !

I 7 SWITCHES THtS SIDE

■' f:

?7 .-7 r2 cz::c:; c:ZJ .■

.V .. o lj

.

" : . .r':-'.S310

S326H

S326B

.

f

■

■

*r~

S326A

S313

.

COMPONENT NUMBER EXAMPLE

Component Number

A23A2R1234

Assembly

^_ | 1 a

Number

Subassembly Nmber

Number (if used)

Chassis-mounted components have no Assembly Number '
prefix—see end of Replaceable Electrical Parts List.

Static Sensitive Devices

-| 2

See Maintenance Section

Schematic

Circuit

BOARD

DAC

LOCATIONS

A3

DISPLAY,

COMPONENT

A2

FIGURE 8-5. A3 DAC BOARD COMPONENT LOCATIONS.

rets

R287

,085.

I ^ 1

1 U295 I

I

0 C292 0

P2flO □

P235

P2SS

1 m

'7

1

P275

“i

1

Lj

^1^1

U)

|

^ □

LJ

|

|Q

:S C2IS

»

□

FIGURE 8-6. A2 DISPLAY BOARD COMPONENT LOCATIONS.

NOTE: In Figure 8-5 the components are illustrated as if looking through the back of the board.

In Figure 8-6 the components are illustrated in the normal manner as if looking directly down on the board.

3643-23

DISPLAY & DAC DIAGRAM <2>

ASSEMBLY A2

CIRCUIT

NUMBER

C215
C21 6
C285
C292

DS215
DS235
DS255

SCHEM

LOCATION LOCATION

ASSEMBLY A3

CIRCUIT

NUMBER

C313
C323
C324
C326
C333
C336
C337
C344
C345
C346
C364
C365
C368
C369
C371
C381
C382
C385
C386
C388
C389
C391
C392
C395
C396
C397
C398
C399

CR371
CR372
CR373
CR375
CR376
CR377
CR378
CR379
CR380

F366
F368
F382
F386
F388

P322

SCHEM

LOCATION LOCATION

BOARD

A1

B1
A4
A4

A1
A2
A3

D7
D7
A7
A7

C7
C7
B7

CIRCUIT SCHEM

NUMBER

DS275

P215

P235

P255
P275

P291

LOCATION

A3

A1
A2
A2
A3
A4

LOCATION

BOARD

B7

C6
C6
B6
B6
A7

CIRCUIT

SCHEM

BOARD

NUMBER

LOCATION

R263

B3
R269
R287
R288

U295

A4
A4
A4

A4

LOCATION

B7
B6

B6

B6

A7

BOARD

G2

D4
C3
HI
H2
C2
G1

F2
C2
C2
C3
E5
E5
E4
E4
D5
C4
C4
D5
D5
C4
D4
E4
E4
C5
C5
C4
C4
C3

E3
E3
E3
E5
E5
E5
E4
E4
E4

C3
C3
C4
C5
C4

H2

D4
C3
C3
D4
D3
D2
E3
E3
E3

H3
G3
G1

HI

H5
J4
J4
J3
J3
J2
J1
K4
K4
K3
K3
K2
K1
J1

H4
H4
H4
H3
H3
H3
HI
HI
HI

H3
G3
J4
J2
J1

C4

NUMBER LOCATION

CIRCUIT

P324
P325
P335
P336
P359
P360
P365
P368
P390
P390
P390
P390
P390

Q391
Q392
0395
Q396
0397
Q398

R323
R324
R325
R326
R327
R328
R329
R333
R334
R335
R336
R337
R338
R339
R344
R345
R346
R348
R349
R351
R355
R358
R361
R362
R364

SCHEM BOARD

H2
H4
G1
HI
Cl
H5
B2
B1
B3
B4
B5
HI
H2

E3
E3

F5

E5
F4
E4

G2
G3

HI

HI
G1
G1

HI
G2

H2

G1
G1

G1
G3
G2
G2
G1
G1
F2
FI
E3
E2
G3

D2
D4
E5

LOCATION

CIRCUIT

SCHEM

BOARD

NUMBER

LOCATION

C3
C2
D3
D2
FI
G5
G4
G2
L5
L5
L5
L5
L5

L4
K4
L3
K3
L2
K2

D4
D4
D3
D2
D2
D1
D1
D4
D3
D3

D2
D2
D1

D1

D4

D3
D3
D2
El
F4
F3
FI
H5
H5
H3

R365
R366
R371
R372
R373

R374

R375
R376
R381
R383
R384
R387
R388
R389
R391
R395
R397

S310
S311
S312
S313
S314
S326A
S326B
S326C
S326D
S326E
S326F
S326G
S326H

TP336

U335
U345
U348
U353
U357
U368
U371
U375
U378

VR378
VR385

E4

D4
D2
D2
D5

D5

D4
D4
E3
F5
C5
F4
C4
C3
E3
E5
E4

G3
G3
G3
G2
G2
G5
G5
G4
G4
G4
G4
G4
G4

G1

G2
FI
F2
D2
D2
D4
E3
E5
E4

C4
C5

LOCATION

H2
H2
H5
H5
H3
H3
H2
H2

J5

K3

J3

J2
J2
J1

K4

K3

K2

B5

B5

B4

B4

B4

B3

B3

B3

B2

B2

B2

B2

B1

D2

D3

E4

E2

F4

F2
G2
J4

H3
J2

J2
K4

CHASSIS MOUNTED PARTS

CIRCUIT

NUMBER

J24

SCHEM

LOCATION LOCATION

BOARD

H2

CHASSIS

CIRCUIT SCHEM

NUMBER LOCATION

R36

BOARD

CIRCUIT

SCHEM

BOARD

LOCATION

NUMBER

LOCATION

HI

CHASSIS

S36A

HI

S36B

A4

LOCATION

CHASSIS
CHASSIS

FIGURE 8-4. WAVEFORMS FOR LOGIC BOARD A4.

+ 5V +5V

L2I5 j_

DISPLAY

H

I C2I6

4r .1

I'

AND

DAC

<£>

FROM

LOGIC
BOARD

FROM
LOGIC
BOARD

L

-QBr.

t

3^-

3*

-te,

^^

-r\

CBto

_

1O

apo-

A_tsv

I2)

y BOO 12

, 400 13

. \

13

N

y ZOO Z

'Uj

HK

'z_rx

^

U

R

Z_LCV

x

>2J

l

| x x

<. V

|5/

VO*1 3

® l

Ti

too

o.a

0.2 2

..

X 13

*

12

3

:• •:

GANGED
WITH
S3 6 A

<$>'

PART OF
TOLERANCE
CONTROL

UN CAL N/C

R269 < ^—MSND

270K > '

C292 _

.2 "

0

ioV NORMAL

+5V FLASH

FOR UN CAL

0

A 2 DISPLAY BOARD

DISPLAY

ENABLE

HOL0

COMPONENT NUMBER EXAMPLE

Component Number

A23.A2R1

-rj]

dumber Subassembly Number

Number (it used)

Static Sensitive Devices

See Maintenance Section

234

LSS"C

U295

NE 555

067-0916-00

LOCATIONS

BOARD

SWITCH
A1

COMPONENT

067-0916-00

D

I

I

FIGURE 8-7. A1 SWITCH BOARD COMPONENT LOCATIONS.

NOTE: In Figure 8-7 the components are illustrated in the normal manner as if looking directly down on the board.

COMPONENT NUMBER EXAMPLE

Component Number

A2.R1234

A23

Assembly

!

.. ,

Number Subassembly Nmber

Number (if used)

Chassis-mounted components have no Assembly Number
prefix—see end of Replaceable Electrical Parts List.

| I

' ^—*■

Schematic

Circuit

Static Sensitive Devices

See Maintenance Section

SWITCH

& FRONT PANEL

ASSEMBLY A1

CIRCUIT SCHEM

NUMBER

P113
P118

S112A
S112B

S112C

S11 2D
S112E
S116A
S116B B4
S116C
S116D B4
S116E
S116F
S116G
S116H

LEVERSWITCH

NUMBER

Cl
C3

B2

B2
B2
B1
B1
B4

B4

B3
B3
B3
B3

DIAGRAM

SCHEM

LOCATION

D3

A3

E2
D2
D2
D2
D2
C2
C2
C2
B2
B2

B2
A2
A2

CHASSIS MOUNTED PARTS

CIRCUIT SCHEM

NUMBER

S15
S35
S55

S75

LOCATION

El
E2
E3
E4

LOCATION

BOARD

CHASSIS
CHASSIS
CHASSIS
CHASSIS

3643-24

LEVERSWITCH

SWITCH

&
FRONT

PANEL

SECTION 9-067-091 6-00 VIDEO AMPLITUDE CALIBRATION FIXTURE

REPLACEABLE

MECHANICAL PARTS

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, instrument type or
number, serial 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.

SPECIAL NOTES AND SYMBOLS

X000

Part first added at this serial number

00X

Part removed after this serial number

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.

1 2 3 4 5

Assembly and/or Component

Name & Description

Attaching parts for Assembly and/or Component

Detail Part of Assembly and/or Component

Attaching parts for Detail Part

Parts of Detail Part

Attaching parts for Parts of Detail Part

Attaching Parts always appear 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. The separation symbol — * — indicates the end of

attaching parts.

Attaching parts must be purchased separately, unless otherwise
specified.

FIGURE

AND INDEX NUMBERS

Items in this section are referenced by figure and index

numbers to the illustrations.

INCH
#
ACTR
ADPTR
ALIGN
AL
ASSEM
ASSY
ATTEN
AWG
BD
BRKT
BRS
BRZ
BSHG
CAB
CAP
CER
CHAS
CKT
COMP
CONN

cov

CPLG
CRT
DEG
DWR

NUMBER SIZE
ACTUATOR
ADAPTER
ALIGNMENT
ALUMINUM
ASSEMBLED
ASSEMBLY
ATTENUATOR
AMERICAN WIRE GAGE
BOARD
BRACKET
BRASS
BRONZE
BUSHING
CABINET
CAPACITOR
CERAMIC
CHASSIS
CIRCUIT
COMPOSITION
CONNECTOR
COVER
COUPLING
CATHODE RAY TUBE
DEGREE
DRAWER

ELCTRN ELECTRON
ELEC
ELCTLT ELECTROLYTIC
ELEM
EPL
EOPT
EXT
FIL
FLEX
FLH
FLTR
FR
FSTNR
FT

FXD
GSKT
HDL
HEX
HEX HD
HEX SOC
HLCPS
HLEXT
HV

1C

ID
IDENT

IMPLR

ELECTRICAL

ELEMENT
ELECTRICAL PARTS LIST
EQUIPMENT
EXTERNAL
FILLISTER HEAD
FLEXIBLE
FLAT HEAD
FILTER
FRAME or FRONT
FASTENER

FOOT
FIXED
GASKET
HANDLE
HEXAGON
HEXAGONAL HEAD
HEXAGONAL SOCKET
HELICAL COMPRESSION
HELICAL EXTENSION
HIGH VOLTAGE
INTEGRATED CIRCUIT
INSIDE DIAMETER
IDENTIFICATION
IMPELLER

ABBREVIATIONS

IN
INCAND
INSUL
INTL
LPHLDR
MACH
MECH
MTG
NIP
NON WIRE
OBD
OD
OVH
PH BRZ
PL
PLSTC
PN
PNH
PWR
RCPT
RES
RGD
RLF
RTNR
SCH
SCOPE
SCR

ITEM

NAME

In the Parts List, an Item Name is separated from the

description by a colon (:). Because of space limitations, an Item

Name may sometimes appear as incomplete. For further Item
Name identification, the U.S. Federal Cataloging Handbook H6-1
can be utilized where possible.

INCH
INCANDESCENT
INSULATOR
INTERNAL
LAMPHOLDER
MACHINE
MECHANICAL
MOUNTING
NIPPLE
NOT WIRE WOUND
ORDER BY DESCRIPTION
OUTSIDE DIAMETER
OVAL HEAD
PHOSPHOR BRONZE
PLAIN or PLATE
PLASTIC
PART NUMBER
PAN HEAD
POWER
RECEPTACLE
RESISTOR
RIGID
RELIEF
RETAINER
SOCKET HEAD
OSCILLOSCOPE
SCREW

SE
SECT
SEMICOND SEMICONDUCTOR
SHLD
SHLDR

SKT
SL
SLFLKG
SLVG
SPR
SQ
SST
STL
SW
T
TERM
THD
THK
TNSN
TPG
TRH
V
VAR
W/
WSHR
XFMR
XSTR

SINGLE END
SECTION

SHIELD
SHOULDERED
SOCKET
SLIDE
SELF-LOCKING
SLEEVING
SPRING
SQUARE
STAINLESS STEEL
STEEL
SWITCH
TUBE
TERMINAL
THREAD
THICK

TENSION
TAPPING
TRUSS HEAD

VOLTAGE

VARIABLE

WITH
WASHER
TRANSFORMER
TRANSISTOR

(rfl

9-1

067-091 6-00 Video Amplitude Calibration Fixture —Replaceable Mechanical Parts

Mfr. Code

00779
07707
09922

12327
13103

22526

49671

73743
76854
78189

80009
83385
87308

91500
91836
93907
95987
97464

CROSS INDEX—MFR. CODE NUMBER TO MANUFACTURER

AMP, INC.
USM CORP., USM FASTENER DIV.
BURNDY CORPORATION
FREEWAY CORPORATION
THERMALLOY COMPANY, INC.

BERG ELECTRONICS, INC.
RCA CORPORATION
FISCHER SPECIAL MFG. CO.
OAK INDUSTRIES, INC., SWITCH DIV.
ILLINOIS TOOL WORKS, INC.

SHAKEPROOF DIVISION
TEKTRONIX, INC.
CENTRAL SCREW CO.
N. L. INDUSTRIES, INC., SOUTHERN SCREW
DIV.
ASHEVILLE-SCHOONMAKER MICA CO.
KINGS ELECTRONICS CO., INC.
TEXTRON INC. CAMCAR DIV
WECKESSER CO., INC.

INDUSTRIAL RETAINING RING CO.

Manufacturer

Address

P 0 BOX 3608
510 RIVER RD.

RICHARDS AVENUE

9301 ALLEN DRIVE
2021 W VALLEY VIEW LANE
P 0 BOX 34829

YOUK EXPRESSWAY

30 ROCKEFELLER PLAZA
446 MORGAN ST.
S. MAIN ST.

ST. CHARLES ROAD
P 0 BOX 500
2530 CRESCENT DR.

P. 0. BOX 1360
910 JEFFERSON AVE., PO BOX 318
40 MARBLEDALE ROAD
600 18TH AVE
4444 WEST IRVING PARK RD.
57 CORDIER ST.

City, State, Zip

HARRISBURG, PA 17105
SHELTON, CT 06484
NORWALK, CT 06852
CLEVELAND, OH 44125

DALLAS, TX 75234
NEW CUMBERLAND, PA 17070
NEW YORK, NY 10020
CINCINNATI, OH 45206
CRYSTAL LAKE, IL 60014

ELGIN, IL 60120
BEAVERTON, OR 97077
BROADVIEW, IL 60153

STATESVILLE, NC 28677
NEWPORT NEWS, VA 23607
TUCKAHOE, NY 10707

ROCKFORD, IL 61101
CHICAGO, IL 60641

IRVINGTON, NJ 07111

9-2

(a)

Fig. &
Index
No.

1-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

-11

-12

-13

-14

-15

-16

-17

-18

-19

-20

-21

-22

-23

-24

-25

-26

-27

-28

-29

-30

-31

-32

-33

-34

-35

-36

-37

-38

-39

-40

-41

-42

-43

-44

-45

-46

Tektronix
Part No. Eff

200-2530-00

211-0244-00

337-1399-00
366-1690-00
105-0719-00

213-0113-00

105-0718-01
366-1189-00
366-0379-00
426-1072-00
426-0916-00
331-0314-00
333-2677-00

210-0586-00

333-2678-00

386-3657-01
211-0534-00

213-0192-00

426-1761-00

211-0244-00
213-0229-00

211-0244-00
220-0455-00

210-0997-00
136-0751-00

131-0589-00

210-0583-00
210-0046-00

175-3698-00
131-0818-00
175-1202-00
131-0622-00
131-0792-00
352-0198-02
386-4465-00
386-2173-00

211-0109-00

200-1339-00
214-1702-00
358-0465-00
384-1130-00
380-0273-00
354-0165-00
210-0949-00
376-0014-00

Serial/Model No.

Dscont

067=091 6=00 Video Amplitude Calibration Fixture-Replaceable

Qty 1 2 3 4 5

2

COVER,CAL FXTR:UPPER & LOWER,AL

4

SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

2

SHLD,ELECTRICAL:SIDE

1

KNOB,LATCH:SIL GY,0.53 X0.23 X 1.059

1

LATCH,RETAINING:PLUG-IN

1

SCR,TPG,THD FOR:2-32 X 0.312 INCH,PNH STL

1

BAR,LATCH RLSE:
KNOB:GRAY

1
1

KNOB:GRAY,MODE

26

FRAME,PUSH BTN:PLASTIC

1

FRAME,RDOUT WDO:

1

WINDOW,READOUT:RED

1

PANEL,FRONT:

3

NUT,PL,ASSEM WA:4-40 X 0.25,STL CD PL

1

PANEL,REAR:

2

SUPPORT,PLUG IN:

2

SCR,ASSEM,WSHR:6-32

2

SCR,TPG,THD FOR:6-32 X 0.50 INCH,PNH STL

1

FRAME SECT,CAB:UPPER

4

SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

2

SCR,TPG,THD FOR:6-20 X0.375"100 DEG,FLH STL

1

CKT BOARD ASSY:LOGIC(SEE A4 REPL)

4

SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

4

NUT,BLOCK:0.281"SQ,THREE

. LOGIC BOARD ASSY INCLUDES:

4

. WASHER,FLAT:0.042

1

. SKT,PL-IN ELEK:MICROCKT,24 PIN
. (UNDER A4U)

102

. TERM,PIN:0.46

1

RES.,VAR:20K(SEE

1

NUT,PLAIN,HEX.:0.25-32

1

WASHER,LOCK:0.261

1

CABLE ASSY,RF:50 OHM COAX,6.0 L,6-l

1

. CONNECTOR,RCPT,:BNC,FEMALE

1

. CABLE,RF:50 OHM COAX,LT BLUE VINYL JKT

1

. CONTACT,ELEC:0.577"L,28-32

1

. CONNECTOR,TERM:18-20

1

. HLDR,TERM CONN:2 WIRE RED

1

SUBPANEL,FRONT:

1

SPRT,KNOB ASSY:VAR RES ZERO

2

SCREW,MACHINE:4-40

1

COVER,HOUSING:VARIABLE

1

SPR,HLCL,TRSN:0.215

1

SPACER,SLEEVE:0.13

1

EXTENSION SHAFT:VAR RES ZERO

1

HOUSING,SHAFT:GRAY ACETAL

1

RING,RETAIN1NG:0.114

2

WASHER,FLAT:0.141

1

CPLG,SHAFT,FLEX:SST

(ATTACHING PARTS)

(ATTACHING PARTS)

(ATTACHING PARTS)

(ATTACHING PARTS)

(ATTACHING PARTS)

(ATTACHING PARTS)

L X

R36 REPL)

(ATTACHING PARTS)

(ATTACHING PARTS)

X

ID X

ID X

Name & Description

X

0.312 INCH,PNH STL

ID X

0.025 SQ.PH BRZ GL

X

ID,INTL,0.018

AWG,CU BE GOLD PL

0.875"100 DEG,FLH STL

RESISTOR

INCH OD

0.18 L,SST,0.155

FREE IDX 0.025 INCH

0.50 INCH OD,BRS

WIRE

4-40 THRU THDS

0.135 OD

0.312 INCH,BRS

AWG WIRE

THK,BRS

80009

78189

80009
80009
80009

93907

80009
80009

80009
80009
80009
80009
80009

83385

80009'

93907
83385
87308

80009

78189
93907

78189
80009

80009
09922

22526

73743
78189

80009
91836
80009
22526

22526
80009
80009
80009

83385

80009
80009
80009

80009
80009
97464

12327

76854

Mechanical Parts

Mfr

Code

Mfr Part Number

200-2530-00

OBD

337-1399-00
366-1690-00
105-0719-00

OBD

105-0718-01
366-1189-00
366-0379-00
426-1072-00
426-0916-00
331-0314-00
333-2677-00

OBD

333-2678-00

OBD
OBD
OBD

426-1761-00

OBD

OBD

OBD
220-0455-00

210-0997-00

D1LB24P-108

47350

2X20317-402
1214-05-00-0541C

175-3698-00
KC19-153BNC
175-1202-00
46241
46221
352-0198-02
386-4465-00
386-2173-00

OBD

200-1339-00
214-1702-00

358-0465-00
384-1130-00
380-0273-00

1000-15

OBD

22675-001

60

9-3

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

Fig. &
Index
No.

1-47

-48

-49

210-0583-00
210-0046-00

Tektronix
Part No.

Serial/Model No.
Eft

Dscont

1 2 3 4 5

Qty

RES.,VAR:10K(SEE

1

NUT,PLAIN,HEX.:0.25-32

1

WASHER,LOCK:0.261

1

Mechanical Parts

Name & Description

Rll REPL)

(ATTACHING PARTS)

ID,INTL,0.018

X

0.312 INCH,BRS
THK,BRS

Mfr
Code Mfr Part Number

73743
78189

2X20317-402
1214-05-00-0541C

-50

-51

211-0112-00

-52

210-0405-00

-53

210-0001-00

-54

131-1807-00

-55

-56

211-0244-00

-57

131-0589-00

-58

136-0494-00

-59

179-2746-00

-60

131-0707-00

-61

352-0169-09

-62

131-0621-00

-63 352-0201-04

-64

352-0201-05

-65

352-0201-06

-66

352-0201-07

-67

352-0202-04

-68

352-0202-05

-69 352-0202-06

-70

352-0202-07

-71

352-0198-07

-72

352-0206-00

-73

352-0206-01

-74

352-0206-05

-75

352-0206-04

-76

352-0199-04

-77

352-0201-03

-78

352-0201-02

-79 352-0206-03

-80

352-0206-02

-81

352-0199-02

-82

352-0206-06

-83

352-0201-02

-84

352-0201-03

-85

352-0203-00

-86

352-0206-07

-87

352-0206-02

-88

352-0206-03

-89

352-0198-09

-90

352-0206-01

-91

352-0206-00

-92

352-0203-00

-93

214-3087-00

-94

211-0534-00

SWITCH,BCD:(SEE

1

SCREW,MACHINE:2-56

4

NUT,PLAIN,HEX.:2-56 X

4

WASHER,LOCK:INTL,0.092

4

1 CONTACT ASSY,EL:31,0.025

CKT BOARD ASSY:DISPL

1

4 SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

-

. DISPLAY BOARD ASSY INCLUDES:

26

. TERM,PIN:0.46

4 . SKT,PL-IN ELEK:MICROCIRCUIT,14

1 WIRING HARNESS:MAIN

. CONNECTOR,TERM.:22-26

2

. CONN BODY,PL,EL:2 WIRE WHITE

1

204 . CONNECTOR,TERM:22-26

. HLDR,TERM CONN:5 WIRE YELLOW

1
1 . CONN BODY,PL,EL:5 WIRE GREEN
1

. CONN BODY,PL,EL:5 WIRE BLUE

1

. CONN BODY,PL,EL:5 WIRE VIOLET
1 . CONN BODY,PL,EL:6 WIRE YELLOW
1 . CONN BODY,PL,EL:6 WIRE GREEN
1

. CONN BODY,PL,EL:6 WIRE BLUE

1 . CONN BODY,PL,EL:6 WIRE VIOLET

1

. CONN BODY,PL,EL:2 WIRE PURPLE

. HLDR,TERM CONN:10 WIRE BLACK

1
1 . HLDR,TERM CONN:10 WIRE BROWN

. HLDR,TERM CONN:10 WIRE GREEN

1

. HLDR,TERM CONN:10 WIRE YELLOW

1
1 . CONN BODY,PL,EL:3 WIRE YELLOW
1 . CONN BODY,PL,EL:5 WIRE ORANGE
1

. CONN BODY,PL,EL:5 WIRE RED

1 . HLDR,TERM CONN:10 WIRE ORANGE
1

. CONN BODY,PL,EL:10 WIRE RED

1

. CONN BODY,PL,EL:3 WIRE RED
1

. HLDR,TERM CONN:10 WIRE BLUE
1

. CONN BODY,PL,EL:5 WIRE RED
1

. CONN BODY,PL,EL:5 WIRE ORANGE
1

. HLDR,TERM CONN:7 WIRE BLACK
1

. HLDR,TERM CONN:10 WIRE VIOLET
1 . CONN BODY,PL,EL:10 WIRE RED
1 . HLDR,TERM CONN:10 WIRE ORANGE

. CONN BODY,PL,EL:2 WIRE WHITE

1

. HLDR,TERM CONN:10 WIRE BROWN

1
1 . HLDR,TERM CONN:10 WIRE BLACK
1 . HLDR,TERM CONN:7 WIRE BLACK
1

HEAT SINK,XSTR:(3)

2

SCR,ASSEM,WSHR:6-32

S15,35,55,75

(ATTACHING PARTS)

X

0.375,FLH,100

0.188 INCH,BRS

ID X

SQ,0.15 CTR,0.54L

AY(SEE A2 REPL)

(ATTACHING PARTS)

L X

0.025 SQ.PH BRZ GL

AWG,BRS& CU BE GOLD

AWG,BRS& CU BE GOLD

TO

-220

(ATTACHING PARTS)

X

0.312 INCH,PNH STL

REPL)

0.18MO

DEG

D,STL

DIP

83385
73743
78189

22526

78189

22526

80009
22526
80009
22526
80009 352-0201-04
80009
80009
80009
80009
80009
80009 352-0202-06
80009
80009
80009 352-0206-00
80009 352-0206-01
80009
80009 352-0206-04
80009
80009
80009
80009 352-0206-03
80009 352-0206-02
80009
80009 352-0206-06
80009 352-0201-02
80009
80009 352-0203-00
80009 352-0206-07
80009
80009
80009
80009
80009 352-0206-00
80009 352-0203-00
80009 214-3087-00

83385

OBD
2X12157-402
1202-00-00-0341C

65603-131

OBD

47350

179-2746-00

47439

352-0169-09

46231

352-0201-05
352-0201-06
352-0201-07

352-0202-04

352-0202-05

352-0202-07
352-0198-07

352-0206-05

352-0199-04
352-0201-03
352-0201-02

352-0199-02

352-0201-03

352-0206-02
352-0206-03
352-0198-09
352-0206-01

OBD

9-4

-95

-96

-97

-98

-99

-100

210-0406-00
210-1178-00
342-0202-00

211-0244-00
220-0455-00

3

NUT,PLAIN,HEX.:4-40 X 0.188 INCH,BRS

3

WSHR,SHOULDERED:FOR MTG TO-220 TRANSISTOR

3

INSULATOR,PLATE:TRANSISTOR,MICA
CKT BOARD ASSY:DAC(SEE A3 REPL)

1

4

SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

4

NUT,BLOCK:0.281"SQ,THREE

(ATTACHING PARTS)

4-40 THRU THDS

73743
49671
91500

78189
80009 220-0455-00

2X12161-402
DF 137A

10-21-023-106

OBD

(d>

Fig. &

Index

No.

1-

Tektronix
Part No.

-ioi

-102

131-0589-00

-103

136-0261-00

-104

131-0608-00

-105 131-0993-00

-106

136-0252-07

-107 198-2868-00

-108

-109

-110

343-0499-03

-111

210-3033-00

-112

343-0499-05

-113

210-3033-00

-114

343-0495-05

-115 343-0495-08

-116

342-0324-00

-117

-118

211-0007-00

-119

129-0517-00

-120

131-0787-00
131-0589-00

-121

343-0499-03

-122

343-0499-05

-123 210-3033-00

-124

-125

-126

343-0495-08

-127

210-3033-00

-128

343-0495-05

-129

366-1512-00

-130

426-1762-00

-131

211-0244-00
213-0229-00

-132

343-0013-00

-133

210-0458-00

-134

210-0863-00

Serial/Model No.
Eft

B010100
B010120

Dscont

B010119 15

067-0916-00 Video Amplitude Calibration Fixture—Replaceable

1 2 3 4 5

Qty

-

. DAG BOARD ASSY INCLUDES:

3

. TRANSISTORS:(SEE Q391,Q395,Q397 REPL)
47 . TERM,PIN:0.46 L X 0.025 SQ.PH BRZ GL
10

. SOCKET,PIN TERM:FOR 0.22 INCH PIN
11

. TERMINAL,PIN:0.365 L X 0.025 PH BRZ GOLD

1

. BUS,CONDUCTOR:2 WIRE BLACK
48

. SOCKET,PIN CONN:W/0 DIMPLE

1

. WIRE SET,ELEC:

1 . SWITCH:8 BUTT0N(SEE A3S326 REPL)
5

. SWITCH:(SEE A3S310,311,312,313,314

1

. CLIP,SWITCH:7.5 MM,4 UNIT

13

. EYELET,METALLIC:0.59 OD X 0.156 INCH LONG

2

. CLIP,SWITCH:REAR,7.5MM X 5 UNIT

13

. EYELET,METALLIC:0.59 OD X 0.156 INCH LONG

1

. CLIP,SWITCH:FRONT,7.5MM X5 UNIT

1 . CLIP,SWITCH:FRONT,7.5MM X8 UNIT

4

. INSULATOR,DISC:TO-5 TRANSISTOR

-

. (UNDER A3U368,Q392,Q396,Q398)

1

CKT BOARD ASSY:SWITCH(SEE A1 REPL)

6

SCREW,MACHINE:4-40 X 0.188 INCH,PNH STL

3

POST,ELEC-MECH:0.25 L X 0.25 HEX,AL

-

. SWITCH BOARD ASSY INCLUDES:
. TERMINAL PIN:0.64 L X 0.025 SQ,PH BRZ

15 . TERMINAL PIN:0.46 L X 0.025 SQ PH BRZ

1

. CLIP,SWITCH:7.5 MM,4 UNIT

2

. CLIP,SWITCH:REAR,7.5MM X 5 UNIT

13

. EYELET,METALLIC:0.59 OD X 0.156 INCH LONG

1

. SWITCH:8 BUTTON(SEE A1S116 REPL)

1

. SWITCH:5 BUTTON(SEE A1S112 REPL)

1 . CLIP,SWITCH:FRONT,7.5MM X8 UNIT

13

. EYELET,METALLIC:0.59 OD X 0.156 INCH LONG

1

. CLIP,SWITCH:FRONT,7.5MM X5 UNIT

26

PUSH BUTTON:GRAY,0.18 SQ X 0.83 INCH LG

1

FRAME SECT,CAB:LOWER

4

SCR,ASSEM WSHR:4-40 X 0.312 INCH,PNH STL

2

SCREW,TPG,TF:6-20 X 0.375,TYPE B,FLH 100 DEG

1

CLAMP,LOOP:0.375 INCH DIA

1

NUT,PL,ASSEM WA:8-32 X 0.344 INCH,STL

1

WSHR,LOOP CLAMP:FOR 0.50" WIDE CLAMP,STL

Name & Description

(ATTACHING PARTS)

(ATTACHING PARTS)

_ _ _ _ _ _

(ATTACHING PARTS)

REPL)

22526
00779
22526
00779
22526
80009

80009
07707
80009
07707
80009
80009
13103 7717-5N-BLUE

83385
80009

22526

22526
80009
80009
07707

80009 343-0495-08
07707
80009
80009
80009

78189
93907

95987

78189 511-081800-00
95987 C191

Mechanical Parts

Mfr
Code

47350

1-331677-6
47357
530153-2

75060-012

198-2868-00

343-0499-03
SE-25
343-0499-05
SE-25
343-0495-05
343-0495-08

OBD
129-0517-00

47359

47350

343-0499-03
343-0499-05
SE-25

SE-25
343-0495-05
366-1512-00
426-1762-00

OBD
OBD

3-8-6B

Mfr Part Number

9-5

Tektronix
Part No.

Serial/Model No.

Eft

Dscont

Mfr

1 2 3 4 5

Qty

Name & Description

STANDARD ACCESSORIES

Code

Mfr Part Number

011-0102-01
011-0134-00
015-0407-00
070-3643-00

012-0159-01

1

TERMN,COAXIAL:75 OHM,BNC

1

ATTENUATOR,FXD:6%

1

ACCESSORY ASSY:LOW PASS FILTER

1

MANUAL,TECH:INSTRUCTION

1

CABLE ASSY,RF:75 OHM COAX,72.0 L

OPTIONAL ACCESSORIES

80009 011-0102-01
80009 011-0134-00
80009
80009

80009 012-0159-01

015-0407-00
070-3643-00

ACCESSORIES

@

Appendix A—067-0916-00

REPORT ©F VAC CALIBRATION

Instructions

Use the Performance Check Procedure steps 1 and 3 in
the 070-3643-00 "Video Amplitude Calibration Fixture" In¬
struction Manual to fill out the following tables. A check-off
list is provided on page A-3. Initial the corresponding line
after each step in the Performance Check Procedure is com¬
pleted. This must be done to insure the instrument is NBS
traceable.

1. Before any adjustments are made to the instrument,

record "Pre-cal Value".

VAC Information

CALIBRATED BY

CAL. DATE

SERIAL NUMBER

NEXT CAL DATE

2. Circle or write in read all "Out-of-Specification"

surements in Table A-1.

3. After all adjustments, measure and record the "Cor¬

rected Value".

DVM TYPE

LAST CAL. DATE

DVM Ini

formation

SERIAL NUMBER

NEXT CAL. DATE

mea¬

TEKTRONIX JOB NUMBER

Table A-1

AMPLITUDE TOLERANCE CHECK

Lever Switch

Setting

(mV)

000.0

999.9

Tables A-2 and A-3 are to be filled out after recalibration of the VAC.

Specification

Tolerance

±(.05% ± .1 mV)

-0.1 to ±0.1

999.3 to 1000.49

DVM ACCURACY AT 1 V

Pre-Cal Value

(mV)

Corrected Value

(mV)

A-1

@

Appendix A—067-0916-00

VI

000.0

000.1

000.3

000.7

000.9

001.9

003.9

007.9

009.9

019.9

039.9

079.9

099.9

199.9

399.9

799.9

Lever Switch

Settings

Table A-2

DIFFERENTIAL LINEARITY CHECK

V2

000.1

000.2

000.4

000.8

001.0

002.0

004.0

008.0

010.0

020.0

040.0

080.0

100.0

200.0

400.0

800.0

Actual Readings

from DVM

avi

aV2

Differential

Amplitude

aV2 avi

V

-V

actual

Lever Switch

Setting

(V

' desired'

250.0 mV

500.0 mV

750.0 mV

offset

)

desired

999.9

Table A-3

ABSOLUTE LINEARITY

Actual Reading

(Vfu,isca,a-Voffse.)

(mV)

(V )

' actual'

= Absolute Linearity Error

Absolute
Linearity

Error

PERFORMANCE CHECK LIST

- 1. Check Amplitude Range, Lever Switches.
_ 2. Check TOLERANCE Control.
_ 3. Check Absolute and Differential Linearity.

- 4. Check Preset Group, Preset Level, System Se¬
lect, and Amplitude Setup Functions.

- 5. Check Noise.

_ 6. Check + LUM, -SYNC, CHR P-P, VARIABLE,

RESET.

_ 7. Check Risetime.
_ 8. Check Output Frequency.

MANUAL CHANGE INFORMATION

At Tektronix, we continually strive to keep up with latest electronic developments
by adding circuit and component improvements to our instruments as soon as they
are developed and tested.

Sometimes, due to printing and shipping requirements, we can’t get these

changes immediately into printed manuals. Hence, your manual may contain new

change information on following pages.

A single change may affect several sections. Since the change information sheets
are carried in the manual until all changes are permanently entered, some
duplication may occur. If no such change pages appear following this page, your

manual is correct as printed.

Because of the universal parts procurement problem, some electrical parts in your
instrument may be different from those described in the Replaceable Electrical Parts
List. The parts used will in no way alter or compromise the performance or reliability
of this instrument. They are installed when necessary to ensure prompt delivery to

the customer. Order replacement parts from the Replaceable Electrical Parts List.

SERVICE NOTE

CHANGE

&
TEST

EQUIPMENT

INFORMATION

CALIBRATION TEST EQUIPMENT REPLACEMENT

Calibration Test Equipment Chart

This chart compares TM 500 product performance to that of older Tektronix equipment. Only those
characteristics where significant specification differences occur, are listed. In some cases the new instrument
may not be a total functional replacement. Additional support instrumentation
calibration procedure may be necessary.

DM 501 replaces 7D13

PG 501 replaces 107

PG 502 replaces 107

PG 508 replaces 114

PG 506 replaces 106

067-0502-01

SG 503 replaces 190,

190A,190B

067-0532-01

SG 504 replaces

067-0532-01

067-0650-00

TG 501 replaces 180,

108

108
111

115

2101

191

180A

181
184

2901

PG 501 - Risetime less than

PG 501 - 5 V output pulse;

PG 502 - 5 V output
PG 502 - Risetime less than

Performance of replacement equipment is the same or

better than equipment being replaced.

PG 506 - Positive-going

PG 506 - Does not have

SG 503 - Amplitude range

SG 503 - Frequency range

SG 504 - Frequency range

TG 501 - Trigger output-

TG 501 - Trigger output-

TG 501 - Trigger output-

Comparison of Main Characteristics

3.5 ns into 50 O.

3.5 ns Risetime

1 ns; 10 ns
Pretrigger pulse
delay

trigger output sig­nal at least 1 V;
High Amplitude out¬
put, 60 V.

chopped feature.

5 mV to 5.5 V p-p.

250 kHz to 250 MHz.

245 MHz to 1050 MHz.

slaved to marker
output from 5 sec
through 100 ns. One
time-mark can be
generated at a time.

slaved to market
output from 5 sec
through 100 ns. One
time-mark can be
generated at a time.

slaved to marker
output from 5 sec

through 100 ns.

One time-mark can
be generated at
a time.

0502-01 - Comparator output

190B - Amplitude range 40 mV

0532-01 - Frequency range

0532-01 - Frequency range

180A - Trigger pulses 1, 10,

2901 - Separate trigger

may be needed or a change in

107 - Risetime less than

3.0 ns into 50 Q.

108 - 10 V output pulse

1 ns Risetime

108 - 10 V output
111 - Risetime 0.5 ns; 30

to 250 ns

Pretrigger pulse

delay

106 - Positive and Negative¬

going trigger output
signal, 50 ns and 1 V;
High Amplitude output,
100 V.

can be alternately
chopped to a refer¬
ence voltage.

to 10 V p-p.

65 MHz to 500 MHz.

65 MHz to 500 MHz.

100 Hz; 1, 10, and

100 kHz. Multiple
time-marks can be
generated simultan¬
eously.

181 - Multiple time-marks
184 - Separate trigger

pulses of 1 and 0.1

sec; 10, 1, and 0.1

ms; 10 and 1 jus.

pulses, from 5 sec
to 0.1 /js. Multiple
time-marks can be
generated simultan¬
eously.

NOTE: All TM 500 generator outputs are short-proof. All TM 500 plug-in instruments require TM 500-Series Power Module.

REV B, JUN 1978