Tektronix 067-1039-00 User manual

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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STANDARDS
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ELECTRICAL
CHARACTERISTICS•••••••••••••••••••••••••••
ENVIRONMENTALCHARACTERISTICS••••••••••••••••••••••••
PHYSICALCHARACTERISTICS•••••••••••••••••••••••••••••
OPERATINGINSTRUCTIONS
INTRQDUCTIQN
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ABOUTTHEPATTERNGENERATOR••••••••••••••••••••••••••
INSTALLATION •
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FUNCTIONSOF THECONTROLSANDCONNECTORS
Controls
Indicators
Connectors
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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
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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
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Cleaning
Lubrication
Adjustment
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Theory of Operation
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Diagrams
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Circuit Board Illustrations
Component and Wiring Color Codes ••••••••••••••••••
Testing Equipment
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Control Settings
Visual Check
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Circuit Isolation
Voltages and Waveforms
Component Checking
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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. 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

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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

r
067-1039-00
Do Not Operate In Explosive Atmospheres
To avoid explosion, do not operate this product in an atmosphere of
explosive gases unless it has been specifically certified for such
operation.
DoHot RemoveCoversor Panels
To avoid personal injury, do not remove the product covers or panels.
Do not operate the product without the covers and panels properly
installed.
ix

067-1039-00
Fig. 1-1 PATTERNGENERATOR
X

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Section1 - 067-1039-00
GENERALINFORMATIONANDSPECIFICATIONS
INTRODUCTION
The 067-1039-00 PATTERNGENERATORprovides a series of video test
signals required to calibrate a multi-rate display monitor (such as
the 690SR Color Display Mainframe). The 690SR can be used with
computer display or television signal sources that use a wide variety
of scanning systems. The PATTERNGENERATORemulates these scan
systems and provides a selection of test signals for calibrating the
display monitor.
The PATTERNGENERATORhas three front panel controls that allow it
to emulate the line and field rates of many scan systems, present or
future. The Horizontal Active Time adjustment varies the interval
between the horizontal blanking periods (blanking itself is nominally
6.75 us); the Lines per TwoFields is set to the number of scan lines
of the chosen standard (an odd number generates 2:1 interlace, an even
number is non-interlaced); and the Lines of Vertical Blanking is set
to the number of blanked lines in each field. The Frame Period is
(6.75 us+ Horizontal Active Time) times Lines per TwoFields.
There are 8 pushbutton switches that provide patterns to test the
operation of the display monitor. These switches generate the
following patterns:
1. Flat Field (White). Tests purity and colorimetry.
2. Flat Field (Grey). Tests low light level calibration.
3. Convergence (Lines/Dots). Tests convergence, geometry,
linearity, and video amplifier pulse response.
4. Vertical Bar. Tests the video amplifier for line time
distortion and integrity of step response.
5. Horizontal Bar. Tests high voltage supply regulation.
6. Window. Tests crt purity error due to shadow mask heating.
7. Staircase. Tests color balance, nonlinear
video amp limiting. With an external ohrominanoe
differential gain and differential phase.
1-1
distortion, and
signal, tests

General Information - 067-1039-00
8. Bounce. Tests video clamp response and feedback stability in
the beam feedback loop.
OVERVIEW
The Operators part of this manual is intended to help the user
obtain maximumperformance from the PATTERNGENERATOR.This part
covers General Information, Specifications, and Operating
Instructions.
The Service Part of this manual covers the Theory of Operation,
the Performance Check and Adjustment section, the Maintenance section,
and. other service information, including the block and schematic
diagrams of the PATTERNGENERATOR.
The eight sections of the manual are:
OPERATORSPART
Section 1 - General Information and Specifications; contains the
instrument description and a listing of the PATTERN GENERATOR
Characteristics and Performance Requirements.
Section 2 - Operating Instructions; introduces the user to the
PATTERNGENERATOR/Display Monitor system and demonstrates the
functions of the front panel controls.
SERYICIIGPART
Section 3 - Theory of Operation; describes all major circuits of
the PATTERNGENERATOR.
Section 4 - Calibration, Part 1: Performance Check; this
subsection is used to verify all of the Performance Requirements in
the Specification, and to determine the need for recalibration
(adjustment) of the PATTERNGENERATOR.
Section
4 -
Performance Check and Adjustment, Part 2: Adjustment
Procedure; this subsection is used to return the PATTERNGENERATORto
conformance with the Performance Requirements. The procedure is
arranged in functional blocks to facilitate referencing from the
Performance Check and the Maintenance Instructions.
1-2

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General Information - 067-1039-00
Section 5 - Maintenance Instructions; describes routine and
corrective maintenance with detailed instructions for replacing
assemblies, subassemblies, and individual components.
Section 6 - Replaceable Electrical Parts; provides information
necessary to order replaceable parts and assemblies related to the
electrical functions of the instrument.
Section 7 - Diagrams; provides functional block diagram and
circuit schematics.
Section 8 - Replaceable Mechanical Parts; provides information
necessary to order mechanical parts that are being replaced. The list
is cross-referenced to replaceable electrical parts where appropriate.
The Exploded Diagram shows the assembly sequence and identifies the
assemblies. The Accessories page lists the standard and optional
accesories. (Not present in the interim manual.)
Changes and Corrections; provides updating information for the
manual in the form of inserts. These inserts are incorporated into
the manual text and diagrams when the manual is revised.
STANDARDS
The abbreviations
diagrams are based on
Y32.14-1973 (American
Street, New York, N.
and graphic symbols
ANSI Y1.1-1972, ANSI
National Standards
Y. 10017)
1-3
used in the
Y32.2 1970,
Institute, 345
text and
and ANSI
East 47

Specification - 067-1039-00
SPECIFICATION
The following specifications apply to the 067-1039-00 PATTERN
GENERATOR.Allow 30 minutes warmup. Items listed in the Performance
Requirements column are verifed by completing the Performance Check in
Section 4 of this manual. Items listed in the Supplemental
Information column may not be verified in this manual; they are either
exlanatory notes or performance characteristics for which no limits
are specified.
Table 1-1
ELECTRICALCHARACTERISTICS
Characteristics I Performance Requirement I Supplemental Information
====================l=========================I============================
Video Outputs I I
Impedance I I 75 ohms with all outputs
I I terminated in 75 ohms
------------------+-------------------------+----------------------------
Levels
White I
I 700 mV+/- 7mV
----------------+-------------------------+----------------------------
Grey I 70 mV+/-7 mV
----------------+-------------------------+----------------------------
Blanking I O V +/- 7 mV
----------------+-------------------------+----------------------------
Blanking Level
Shift I Less than 3 mVfrom 0
I to 100 % APL
----------------+-------------------------+----------------------------
Sync I -300 mV+/- 7 mV
----------------+-------------------------+----------------------------
Staircase Steps 87.5 mV+/-2% (8 steps
from blanking to white) [(Peak White)-(Blanking),
divided by 8] staircase
luminance nonlinear
distortion less than 2%
------------------+-------------------------+----------------------------
Risetime (Except
Staircase) I Less than 2 ns
I
------------------+-------------------------+----------------------------
Falltime (Except
Staircase) I Less than 3 ns
I
------------------+-------------------------+----------------------------
Ringing
1-4
I (8 ns before and after 50%
I of step) less than 5% peak

[
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[
Specification - 067-1039-00
Table 1-1 (cont)
Characteristics I Performance Requirement I Supplemental Information
====================l=========================I===================-=~=====
TTLVideo Outputs
I I
Impedance I Greater than 10,000 ohms.
------------------+-------------------------+----------------------------
White Level
(into 50 or
75 ohms)
I Logic 1 greater than
I 2.5 V I Maximumoutput current
I greater than 50 mA
I
------------------+-------------------------+---------------------------~
Black Level
(into 50 or
75 ohms)
Logic O less than 0.8 V Output Current= 0
------------------+-------------------------+----------------------------
Risetime and
Fall time I Less than 7 ns
I
--------------------+-------------------------+----------------------------
Bounce
Trigger Output
Levels
I
I TTL (Logic 1 = Black
I Video Output) '
------------------+-------------------------+----------------------------
Rate I Adjustable from 0.2 Hz to
I 2 Hz
--------------------+-------------------------+----------------------------
Scan Rate Selection
Number of Lines
in 2 Fields
I
I 21 to 1999 lines
I
------------------+-------------------------+----------------------------
Number of Vertical!
Blanking Lines I I 3 to 99 lines (O, 1, and
I 2 settings result in 3
I lines)
------------------+-------------------------+----------------------------
Vertical Sync
Width I
I 3 lines (fixed)
------------------+-------------------------+----------------------------
Horizontal Active I 10 to 70 us+/- 3%of
Time
I full scale
------------------+-------------------------+----------------------------
Horizontal
Blanking Time I 6.75 us +/-0.2 us
I I Internally adjustable
I from 4.5 us to 12 us
------------------+-------------------------+----------------------------
Horizontal Sync
Width
I 3 us +/-0.1 us
I
I Internally adjustable
I from 2 us to 4.5 us
------------------+-------------------------+----------------------------
Front Porch Width
l 1 us +/-0.05 us
Blanking Time
I Internally adjustable
I from 0.7 us to 1.5 us
~--------------------------------------------------------------------------
1-5

Specification - 067-1039-00
Table 1-1 (cont)
Characteristics I Performance Requirement I Supplemental Information
====================l=========================I============================
Interlace Accuracy I 50
%
H
period +/-5%
H I
--------------------+-------------------------+----------------------------
Oscillator I I Better than +/-0.005%
over
Stability I I 10minutes
--------------------+-------------------------+----------------------------
Oscillator Jitter I I Less than 20
ns over 500ps
------------------+-------------------------+----------------------------
Line-to-line I Less than 5
JlS
peak-to-peak
Jitter I
--------------------+-------------------------+----------------------------
Sync Outputs
TTL H Sync I I TTL levels, logic 1 during
------------------+-------------------------1
sync time
TTL V Sync I I
------------------+-------------------------+----------------------------
TVBlock Sync -4 V into 75
ohms during
Hand
V
sync time; TTL
Block Sync equals
TTL V Sync ORTTL H Sync
Table 1-2
ENVIRONMENTALCHARACTERISTICS
'
---------------------------------------------------------------------------
Characteristic I Description
===========================I=====~=========================================
Temperature Range I
Operating I Oto +50
degrees C
-------------------------+------------------~----------------------------
Non-Operating I -55to +75degrees C
---------------------------+-----------------------------------------------
Humidity I Up to 90%to 95%relative humidity
---------------------------+-----------------------------------------------
Altitude Range
Operating I
I To 4.5km (15,000
ft)
-------------------.-------+-----------------------------------------------
Non-Operating I To 15
km (50,000ft)
---------------------------+-----------------------------------------------
Shock and Vibration I 30
G (half-sinewave), 0.38
mm(0.015inches)
I displacement
1-6

Characteristic
Specification - 067-1039-00
Table 1-3
PHYSICALCHARACTERISTICS
Description
------------------------------~--------------------------------------------
---------------------------------------------------------------------------
Front Panel Lexan Laminated on Aluminum
---------------------------+-----------------------------------------------
Dimensions (Maximum)
Height 12.7 cm (5 in)
--------------------=----+-----------------------------------------------
Width
13.5 (5.3 in)
-------------------------+-----------------------------------------------
Length 29.5 cm (11.6 in)
-------------------------+-----------------------------------------------
Weight
Net 3.44 kg (3 lb 7 oz)
-----------------------+-----------------------------------------------
Shipping (Domestic) 2.27 kg (5 lb)
-----------------------+-----------------------------------------------
Shipping (Export)
I
2.27 kg (5 lb)
1-7