Tektronix TDS Family Option 05 Service Manual
Instruction Manual
TDS Family
Option 05 Video Trigger Interface
070-8748-02
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
Copyright T ektronix, Inc. All rights reserved.
T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
T ektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship
for a period of three (3) years from the date of shipment. If a product proves defective during this warranty period,
T ektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by T ektronix, with shipping charges prepaid.
T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
T ektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-T ektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR
IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PAR TICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO
REP AIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO
THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE
LIABLE FOR ANY INDIRECT , SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE
OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES.
Table of Contents
Operating Information
Service Information
General Safety Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Manuals vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before You Begin 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Information 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Servicing 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strategy for Servicing 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing Electrostatic Discharge (ESD) 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostics 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Replacement Procedures 2–5. . . . . . . . . . . . . . . . . . . . . . . . .
Before You Begin 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Cover and Cabinet Removal 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Board Removal 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Board Replacement 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace Cabinet and Rear Cover 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Execute Diagnostics 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Parts 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS Family Option 05 Instruction Manual
i
Table of Contents
List of Figures
Figure 1–1: Main Trigger Menu — Video Type 1–2. . . . . . . . . . . . . . . . . .
Figure 1–2: Video Trigger Menu — Standard 1–3. . . . . . . . . . . . . . . . . . .
Figure 1–3: Main Trigger Menu — Field 1–4. . . . . . . . . . . . . . . . . . . . . . .
Figure 1–4: Video Trigger Menu — PAL Mode 1–5. . . . . . . . . . . . . . . . . .
Figure 1–5: Video Trigger Menu — HDTV Format 1–6. . . . . . . . . . . . . .
Figure 1–6: FlexFormat V1 Start, V1 Stop, V2 Start and
V2 Stop Times 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–7: Cursor Menu — Video Line Number 1–8. . . . . . . . . . . . . . . .
Figure 1–8: Display Menu — NTSC Graticule 1–9. . . . . . . . . . . . . . . . . . .
Figure 1–9: Display Menu — PAL Graticule 1–10. . . . . . . . . . . . . . . . . . . .
Figure 2–1: Troubleshooting Tree 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: Rear Cover and Cabinet Removal 2–6. . . . . . . . . . . . . . . . . .
Figure 2–3: Circuit Board Installed 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4: Pull Out A23 SerPar Circuit Board Assembly 2–8. . . . . . . . .
Figure 2–5: Proper Routing of the Video Cable 2–9. . . . . . . . . . . . . . . . . .
Figure 2–6: Circuit Board Removal 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7: Video Trigger Replaceable Parts 2–17. . . . . . . . . . . . . . . . . . . .
ii
TDS Family Option 05 Instruction Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or
Personal Injury
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
The common terminal is at ground potential. Do not connect the common
terminal to elevated voltages.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
TDS Family Option 05 Instruction Manual
iii
General Safety Summary
Symbols and Terms
T erms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
T erms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
WARNING
High Voltage
Protective Ground
(Earth) T erminal
CAUTION
Refer to Manual
Double
Insulated
iv
TDS Family Option 05 Instruction Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, disconnect the mains power by means
of the power cord or, if provided, the power switch.
Use Caution When Servicing the CRT. To avoid electric shock or injury, use
extreme caution when handling the CRT. Only qualified personnel familiar with
CRT servicing procedures and precautions should remove or install the CRT.
CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
X-Radiation. To avoid x-radiation exposure, do not modify or otherwise alter the
high-voltage circuitry or the CRT enclosure. X-ray emissions generated within
this product have been sufficiently shielded.
TDS Family Option 05 Instruction Manual
v
Service Safety Summary
vi
TDS Family Option 05 Instruction Manual
Preface
Related Manuals
This instruction manual provides operating and service information for the TDS
Family Option 05, Video Trigger. The following sections are included in this
manual:
Related Manuals (follows this introduction).
Operating Information provides a product description and operating
procedures for using the Video Trigger capabilities.
Service contains module-level service information including a troubleshoot-
ing tree, removal and replacement instructions, and a replaceable parts list.
Other documentation for the TDS Family of digitizing oscilloscopes includes the
following:
The user manual guides the user in operation of the oscilloscope and
describes its features. It also contains tutorials and other useful information.
The programmer manual describes how to use a computer to control the
oscilloscope through the GPIB interface. This includes command descriptions for programming the Video Trigger capabilities.
The reference gives you a quick overview of how to operate these oscillo-
scopes.
The performance verification tells how to verify the performance of the
oscilloscopes.
The service manual provides information for maintaining and servicing the
oscilloscope.
TDS Family Option 05 Instruction Manual
vii
Preface
viii
TDS Family Option 05 Instruction Manual
Operating Information
Operating Information
The Option 05 Video Trigger gives you a variety of tools for investigating events
that occur when a video signal generates a horizontal or vertical sync pulse.
It allows you to investigate a range of NTSC, PAL, SECAM and high definition
TV signals.
To make this option work, you must have both the Video Trigger hardware and
firmware installed on the oscilloscope.
Before You Begin
To ensure the video trigger feature is working properly, execute the internal
diagnostic routine by doing the following steps:
1. Power on the digitizing oscilloscope.
The oscilloscope automatically executes a short internal diagnostic routine
that checks oscilloscope functions. When finished, the oscilloscope displays
an on-screen report of any failed modules or features.
Operation
2. If the video trigger feature fails, refer to the Troubleshooting procedures
starting on page 2–3.
3. If no failures are reported, go to Operation.
The Video Trigger menu lets you select the source, polarity, class, and mode. It
also gives you the option to delay by lines or time and lets you choose the field
to trigger on.
To bring up the Video Trigger menu:
1. Press the TRIGGER MENU button to bring up the Main Trigger menu.
2. Press Type in the main menu until you select Video from the pop-up menu
(see Figure 1–1).
TDS Family Option 05 Instruction Manual
1–1
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