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Tektronix 067-1039-00 User manual

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Copyright 2025 Manuals.Online. All Rights Reserved.

Tektronix, Inc..
P.O. Box
500
Beaverton, Oregon 97077
070-3986-00
Product Group 20
COMMITTED TO EXCELLH~CE
PLEASE CHECK FOR CHANGE INFORMATION
AT THE REAR OF THIS
MANUAL
067-1 039-00
PATTERN
GENERAT R
INSTRUCTION MANUAL
Serial Number ______ _
First Printing JUL 1982
Copyright©
1981,
1982Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in
any form without the written permission of Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are
covered by U.S. and foreign patents and/or pending
patents.
TEKTRONIX, TEK, SCOPE-MOBILE, and
~
are
registered trademarks of Tektronix, Inc. TELEQUIP-
MENT is a registered trademark of Tektronix U.K.
Limited.
Printed in U.S.A. Specification and price change
privileges are reserved.
067-1039-00
TABLEOFCONTENTS
LIST OFILLUSTRATIONS V
OPERATORSSAFETY
SUMMARY•••••••••••••• , • • • • • • • • • • • • • • • • • • • • • • • • • vi
Section 1
Section
2
GENERALINFORMATIONAND
SPECIFICATIONS
INTRODUCTION
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OVERVIEW
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STANDARDS
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ELECTRICAL
CHARACTERISTICS•••••••••••••••••••••••••••
ENVIRONMENTALCHARACTERISTICS••••••••••••••••••••••••
PHYSICALCHARACTERISTICS•••••••••••••••••••••••••••••
OPERATINGINSTRUCTIONS
INTRQDUCTIQN
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ABOUTTHEPATTERNGENERATOR••••••••••••••••••••••••••
INSTALLATION •
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REPACKAGING
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FUNCTIONSOF THECONTROLSANDCONNECTORS
Controls
Indicators
Connectors
Ill.
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OPERATORS
CHECKOUTPROCEDURE•••••••••••••••••••••••••
USINGTHE PATTERNGENERATORTO CHECK
THE
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1-1
1-2
1-2
1-2
1-3
1-4
1-4
1-6
1-7
2-1
2-1
2-1
2-2
2-2
2-3
2-5
2-5
2-6
2-8
067-1039-00
WARNING I
THB
FOLLOWINGSERVICINGINSTRQCTIONSARE FORUSEBY
QUALIFIEDPERSONNEL
ONLY. TOAVOIDPERSONALINJURY, DO
NOT PERFORMANY
SERVICINGOTHERTHANTHATCONTAINEDIN
OPERATING
INSTRUCTIONSUNLESSYOUARE QUALIFIEDTO DO
so.
SERVICINGSAFETYSUMMARY•••••••••••••••••••••••••••••••••••••••• S-1
Section 3 THEORYOF OPERATION
HORIZONTALSYNCGENERATOR(Diagram 1) •••••••••••••••• 3-1
Horizontal Oscillator ••••••••••••••••••••••••••••• 3-1
Vertical Line Generator ••••••••••••••••••••••••••• 3-1
Vertical Bar Generator••••·•••••••·••••·•·•·••·•·· 3-2
Horizontal Interval Timing••••···••·•··•••••···••• 3-2
2H (Interlace) Generator••••••••·••••••••••••••••• 3-3
H Sync Output Buffers••••·•··••··•••····•···•··••• 3-4
Power Supplies ·•••••····••·····••••·•·••••••·•••••-3-4
VIDEOLOGICANDDRIVERS(Diagram 2) •••••••••••••••••• 3-5
Power Supplies••••·•••··•••··•••·•·•··•··•·•·••••· 3-5
Video Logic••••••••••••·•••••·•••·••····••••·•··•· 3-5
Video Output Drivers·•••••••••••··••·····••·••···• 3-5
HORIZONTALLINEGENERATOR(Diagram 3) •••••••••••••••• 3-8
Current State Registers and Remainder Up-Counter •• 3-8
Line Spacing Increment and Line Spacing Reset ••••• 3-9
Line Spacing Memory••••••••••··•·•···••••••••••••• 3-10
Scan Line Counter and White Line Generator·••••••• 3-10
H Bar Generator and Staircase Generator•·•••·••••• 3-11
Bounce Generator and Program Logic •••••••••••••••• 3-13
VERTICALSYNC,POWERSUPPLY(Diagram 4) •••••••••••••• 3-13
Power Supply••••••••••••·····•••···•···••••••••••• 3-14
End-of-Field Pulse Generator••••··•••·•····•••••·• 3-15
Vertical Blanking Generator•••••••••••·•···••••··· 3-15
Composite Sync Driver·•·••••·••···••····••••••·•·• 3-16
External Video Input••••·•••••••••··•••••••••••••• 3-17
ii
Section 4
r
i
r
067-1039-00
PERFORMANCECHECKANDADJUSTMENT
INTRODUCTION•••••••••••••••••••••••••••••••••••••••••
HISTORYINFORMATION••••••••••••••••••••••••••••••••••
RECOMMENDEDTESTEQUIPMENT•••••••••••••••••••••••••••
PERFORMANCECHECK••••••••••••••••••••••••••••• ; ••••••
INCOMINGINSPECTION••••••••••••••••••••••••••••••••••
PRELIMINARYPREPARATION••••••••••••••••••••••••••••••
PERFORMANCECHECKPROCEDURE••••••••••••••••••••••••••
Check White Level•••••••••••••••••••••••••••••••••
Check
Check
Check
Check
Check
Check
Check
Check
Check
Check
Grey Level·•••••····••••••••••······•···•·••
Blanking Level ..............................
Blanking Level Shift••••••••••••••••••••••••
Sync Level·•••••···••••········•••·····••••·
Staircase Steps••·•···••••·••·····•••••••···
Horizontal Active Time••··•···•••·•·····••••
Horizontal Blanking Time·•·•······••••••····
Horizontal Sync Width •••••••••••••••••••••••
TTLWhite Level•••••••••••••••••••••••••••••
TTLBlack Level•••••••••••••••••••••••••••••
Check Interlace ...................................
ADJUSTMENT••••••••••••••••••••••••••••••••••••••• • • • •
PRELIMINARYPREPARATION••••••••••••••••••••••••••••••
Adjust Power Supply··••••·•·•·•••••••••··•••••••••
Adjust Horizontal Active Time•••••••·•··•·••••••·•
Adjust Internal Horizontal Timing·•••·•·•••••••••·
Ajust Levels••••·····•••·•·•··•·••••••······••••·•
Adjust Staircase•·•••·••·••••···••••••··•·••••·••·
Adjust Crosshatch Width•••·••••·•••··•··••••••···•
Adjust Interlace•·•••••··••••••·····••••••·•••••••
iii
4-1
4-1
4-1
4-3
4-3
4-3
4-3
4-3
4-4
4-5
4-5
4-5
4-5
4-5
4-6
4-7
4-7
4-8
4-9
4-11
4-12
4-13
4-14
4-14
4-15
4-16
4-16
4-16
Section 5
Section 6
Section 7
067-1039-00
MAINTENANCE
PREVENTIVEMAINTENANCE
••••e•••••••eoo•o••aie0oeaee&eoel$easo@0e11ee
Cleaning
Lubrication
Adjustment
TROUBLESHOOTINGAIDS •••••••••••••efilo~•o•o"61eooee•ee11,1Q@
Theory of Operation
··········••oeeeeeee•••oeSOQ@OG
Diagrams
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Circuit Board Illustrations
Component and Wiring Color Codes ••••••••••••••••••
Testing Equipment
•••••••••eoeooeeooeooe@filGtieeooee@
TROUBLESHOOTINGTECHNIQUES•••••••••••••••••••••
Control Settings
Visual Check
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Static-Sensitive Components
Test Equipment
Circuit Isolation
Voltages and Waveforms
Component Checking
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Transistors and Integrated Circuits
Diodes
Resistors
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Circuit Board Removal
PARTSORDERINGANDREPLACING
Ordering •••••••••••••••••••••eee111eaa111e@eoeC1oesooee
USINGTHEREARINTERFACE
CONNECTOR
Input
Output
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REPLACEABLEELECTRICALPARTS
DIAGRAMS
CHANGEINFORMATION
iv
5-1
5-1
5-1
5-1
5-2
5-2
5=2
5-2
5-2
5-2
5-3
5-3
5-3
5-4
5-5
5=5
5-6
5-6
5-6
5-8
5-8
5-8
5-9
5-9
5-10
5-10
5-10
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Fig. 1-1
Fig. 2-1
Fig. 2-2
Fig. 3-1
Fig. 4-1
Fig. 4-2
Fig. 4-3
Fig. 4-4
Fig. 4-5
Fig. 4-6
Fig. 4-7
Fig. 4-8
Fig. 4-9
Fig. 4-10
Fig. 4-11
Fig. 5-1
067-1039-00
LISTOFILLUSTRATIONS
PATTERNGENERATOR•••••••••••••••••••••••••••••••• ix
PATTERNGENERATORControls and Connectors••••••••
2-4
PATTERNGENERATORConnections
to
Display
Monitor with Video Decoder Module •••••••••••• 2-8
Field Rate Staircase Signal•·•••••••••••••••••••· 3-7
Test Equipment Setup for Performance Checks •••••• 4-4
Horizontal Active Time·(70 us) ••••••••••••••••••• 4-6
Horizontal Active Times (10 us) •••••••••••••••••• 4-6
Horizontal Blanking Time•••••••••••••••••••·••··• 4-7
Horizontal Sync Width•••••••••···••·••••••••••··· 4-7
TV to TTL Signal Level Adjustment•••••··•··•·•••• 4-8
Interlace••••·•••••·•••·•·••·•••••••••••••••··••· 4-9
Test Equipment Setup for Adjustment Procedure •••• 4-12
+15 V Adjustment Locations on the Vertical
Sync Generator Board•••••••••·••••••·•••••••· 4-13
Test points and Adjustments Locations on the
Horizontal Sync Generator Board••••·••••••••• 4-15
Adjustments on the Horizontal Line
Generator Board••••••••••·•••·•••·••···•··••· 4-17
Semiconductor Components Basing••••••••••••·••••· 5-7
V
l
I
l
067-1039-00
OPERATORSSAFETYSUMMARY
The general safety information in this part of the summary is for
both operating and service 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
CAUTIONstatements identify conditions or practices that could result
in damage to the equipment or other property.
WARNINGstatements identify conditions or practices that could result
in personal injury or loss of life.
A1 Markedon lquipment
CAUTIONindicates a personal injury hazard not immediately accessible
as one reads the marking, or a hazard to property including the
equipment itself.
DANGERindicates a personal injury hazard immediately accessible as
one reads the marking.
In This Manual
SYMBOLS
This symbol indicates where applicable
cautionary or other information is to
be found.
vii
067-1039-00
As MarkedOnEquipment
DANGER- High Voltage.
Protective ground (earth) terminal.
ATTENTION- Refer to manual.
PowerSouroe
This product is intended to operate from a power source that 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.
Groundingthe Produot
This product is grounded through the grounding conductor of the power
cord in the mainframe. To avoid electrical shock, plug the mainframe
power cord into a properly wired receptacle before connecting to the
mainframe input terminals. A protective ground connection
by way
of
the grounding conductor in the mainframe power cord is essential for
safe operation.
na111•rAl'iai111rromLosa ot Ground
Upon loss of the protective-ground connection,
conductive parts (including nobs and controls that may
insulating) can render an electric shock.
Uae the Proper Fuse
all accessible
appear to be
To avoid fire hazard, use only a fuse of the proper type, voltage
rating, and current rating as specified in the parts list for your
product.
viii