Tektronix TDS 510A Service Manual
Service Manual
TDS 510A
Digitizing Oscilloscope
070-9704-02
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 PARTICULAR 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.
Service Assurance
If you have not already purchased Service Assurance for this product, you may do so at any time during the product’s
warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs.
Repair Protection extends priority repair services beyond the product’s warranty period; you may purchase up to three
years of Repair Protection.
Calibration Services provide annual calibration of your product, standards compliance and required audit documentation,
recall assurance, and reminder notification of scheduled calibration. Coverage begins upon registration; you may purchase
up to five years of Calibration Services.
Service Assurance Advantages
H Priced well below the cost of a single repair or calibration
H Avoid delays for service by eliminating the need for separate purchase authorizations from your company
H Eliminates unexpected service expenses
For Information and Ordering
For more information or to order Service Assurance, contact your T ektronix representative and provide the information
below . Service Assurance may not be available in locations outside the United States of America.
Name VISA or Master Card number and expiration
Company date or purchase order number
Address Repair Protection (1,2, or 3 years)
City , State, Postal code Calibration Services (1,2,3,4, or 5 years)
Country Instrument model and serial number
Phone Instrument purchase date
Table of Contents
Specifications
Operating Information
General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
User Interface 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signal Acquisition System 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal System 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger System 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acquisition Control 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On-Board User Assistance 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement Assistance 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage and I/O 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal Traits 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranted Characteristics 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Characteristics 1–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation
Using This Manual 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Servicing 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strategy for Servicing 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Structure 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Conventions 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ektronix Service 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finding Other Information 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplying Operating Power 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applying and Interrupting Power 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging Instructions 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installed Options 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Operating Instructions 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen Layout 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Procedures 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Conventions 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Overview 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS 510A Service Manual
i
Table of Contents
Performance Verification
Performance Verification Procedures 4–1. . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brief Procedures 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self Tests 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional T ests 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Tests 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prerequisites 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS 510A T est Record 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Signal Acquisition System Checks 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Base System Checks 4–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger System Checks 4–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Signal Checks 4–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 05 Video Trigger Checks 4–67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sine Wave Generator Leveling Procedure 4–84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedures
Maintenance
Adjustment Procedures 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements for Performance 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Usage 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Instructions 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Adjustment for the P6139A Probe 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Assembly Adjustment 5–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Information 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures Not In This Section 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing Electrostatic Discharge (ESD) 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Care 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning Procedures 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation Procedures 6–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation — Please Read 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Access Procedure 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for External Modules 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Outer-Chassis Modules 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Inner-Chassis Modules 6–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly for Cleaning 6–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6–61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostics 6–61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firmware Updates 6–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options
ii
Options and Accessories 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS 510A Service Manual
Electrical Parts List
Diagrams
Mechanical Parts List
Table of Contents
Replaceable Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Parts 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDS 510A Service Manual
iii
Table of Contents
List of Figures
Figure 2–1: Power-Cord Plug Identification 2–9. . . . . . . . . . . . . . . . . . . .
Figure 2–2: Map of Display Functions 2–14. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1: Map of Display Functions 4–3. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Verifying Adjustments and Signal-Path Compensation 4–6.
Figure 4–3: Universal Test Hookup for Functional Tests 4–8. . . . . . . . . .
Figure 4–4: Measurement of DC Offset Accuracy at Zero Setting 4–29. . .
Figure 4–5: Initial Test Hookup 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6: Measurement of DC Accuracy at Maximum Offset
and Position 4–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–7: Initial Test Hookup 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Optional Initial Test Hookup 4–34. . . . . . . . . . . . . . . . . . . . . . .
Figure 4–9: Measurement of Analog Bandwidth 4–37. . . . . . . . . . . . . . . . .
Figure 4–10: Initial Test Hookup 4–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–11: Measurement of Channel Delay 4–41. . . . . . . . . . . . . . . . . . . .
Figure 4–12: Initial Test Hookup 4–43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–13: Measurement of Accuracy — Long-Term and
Delay Time 4–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–14: Initial Test Hookup 4–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–15: Measurement of Time Accuracy for Pulse and
Glitch Triggering 4–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–16: Initial Test Hookup 4–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–17: Measurement of Trigger-Level Accuracy 4–51. . . . . . . . . . . .
Figure 4–18: Initial Test Hookup 4–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–19: Measurement of Trigger Sensitivity — 50 MHz
Results Shown 4–55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–20: Initial Test Hookup 4–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–21: Measurement of Main Trigger Out Limits 4–60. . . . . . . . . . .
Figure 4–22: Initial Test Hookup 4–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–23: Measurement of Probe Compensator Frequency 4–64. . . . .
Figure 4–24: Subsequent Test Hookup 4–65. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–25: Measurement of Probe Compensator Amplitude 4–66. . . . .
Figure 4–26: Jitter Test Hookup 4–68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–27: Jitter Test Displayed Waveform 4–69. . . . . . . . . . . . . . . . . . .
Figure 4–28: Jitter Test When Completed 4–70. . . . . . . . . . . . . . . . . . . . . .
Figure 4–29: Triggered Signal Range Test – 300 mV 4–72. . . . . . . . . . . . . .
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TDS 510A Service Manual
Table of Contents
Figure 4–30: Triggered Signal Range Test – 75 mV 4–73. . . . . . . . . . . . . . .
Figure 4–31: 60 Hz Rejection Test Hookup 4–74. . . . . . . . . . . . . . . . . . . . . .
Figure 4–32: 60 Hz Rejection Test Setup Signal 4–74. . . . . . . . . . . . . . . . . .
Figure 4–33: Subsequent 60 Hz Rejection Test Hookup 4–75. . . . . . . . . . .
Figure 4–34: 60 Hz Rejection Test Result 4–76. . . . . . . . . . . . . . . . . . . . . . .
Figure 4–35: Line Count Accuracy Test Hookup 4–77. . . . . . . . . . . . . . . . .
Figure 4–36: Line Count Accuracy Test Setup Waveform 4–78. . . . . . . . .
Figure 4–37: Line Count Accuracy Correct Result Waveform 4–79. . . . . .
Figure 4–38: Setup for Sync Duty Cycle Test 4–81. . . . . . . . . . . . . . . . . . . .
Figure 4–39: Sync Duty Cycle Test: One-Div Neg Pulse Waveform 4–82. .
Figure 4–40: Sync Duty Cycle Test: Critically Adjusted Pulse 4–83. . . . . .
Figure 4–41: Sine Wave Generator Leveling Equipment Setup 4–85. . . . .
Figure 4–42: Equipment Setup for Maximum Amplitude 4–86. . . . . . . . .
Figure 5–1: Accessing the Protection Switch 5–9. . . . . . . . . . . . . . . . . . . .
Figure 5–2: Hookup for Probe Compensation 5–10. . . . . . . . . . . . . . . . . . .
Figure 5–3: Performing Probe Compensation 5–11. . . . . . . . . . . . . . . . . . .
Figure 5–4: Proper and Improper Probe Compensation 5–12. . . . . . . . . . .
Figure 5–5: Exposing the Inner Probe Tip 5–13. . . . . . . . . . . . . . . . . . . . . .
Figure 5–6: Initial Test Hookup 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–7: Exposing the Probe Body 5–16. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–8: Initial Test Hookup 5–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–9: Locations of P6139A Probe Adjustments 5–18. . . . . . . . . . . . .
Figure 5–10: Adjustments versus Front-Corner Response 5–19. . . . . . . . .
Figure 5–11: Five and Ten Percent Luminance Patches 5–21. . . . . . . . . . .
TDS 510A Service Manual
Figure 6–1: External Modules 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–2: Outer-Chassis Modules 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–3: Inner-Chassis Modules 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–5: Knob Removal 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: Line Fuse and Line Cord Removal 6–19. . . . . . . . . . . . . . . . . .
Figure 6–7: Rear Cover and Cabinet Removal 6–22. . . . . . . . . . . . . . . . . .
Figure 6–8: Front Cover, Trim Ring, Menu Buttons, and Attenuator
Panel Removal (Front Cover not Shown) 6–23. . . . . . . . . . . . . . . . . . . .
Figure 6–9: A12 Front-Panel Assembly 6–25. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–10: Disassembly of Front-Panel Assembly 6–26. . . . . . . . . . . . . .
Figure 6–11: Cabinet Modules Removal 6–29. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–12: Attenuator Interconnect Cable Routing and
Jack Locations 6–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
Figure 6–13: A14 D1 Bus and Power Cables Removal 6–33. . . . . . . . . . . .
Figure 6–14: Remove Circuit Board Assembly From Oscilloscope 6–34. .
Figure 6–15: Remove Circuit Board From Assembly 6–35. . . . . . . . . . . . .
Figure 6–16: Circuit Board Installed 6–37. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–17: Proper Routing of the Video Cable 6–38. . . . . . . . . . . . . . . . .
Figure 6–18: Circuit Board Removal 6–39. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–19: A11 Processor/Display Removal 6–41. . . . . . . . . . . . . . . . . . .
Figure 6–20: Board Bracket Removal 6–42. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–21: A11 Processor/Display Removal 6–45. . . . . . . . . . . . . . . . . . .
Figure 6–22: Floppy Disk Removal 6–47. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–23: Rear Chassis Removal 6–49. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–24: A16 Low Voltage Power Supply Removal 6–51. . . . . . . . . . .
Figure 6–26: Display Assembly Removal 6–54. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–27: Display-Driver Board Removal 6–55. . . . . . . . . . . . . . . . . . . .
Figure 6–28: Front Subpanel Removal 6–57. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–29: Accessing the Protection Switch 6–62. . . . . . . . . . . . . . . . . . .
Figure 6–30: Primary Troubleshooting Procedure 6–63. . . . . . . . . . . . . . .
Figure 6–31: Module Isolation Troubleshooting Procedure 6–64. . . . . . . .
Figure 6–32: A16 Low Voltage Power Supply Module Isolation
Troubleshooting Procedure 6–65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–33: Power Supply Voltage Measurement Locations 6–66. . . . . . .
Figure 6–34: Display Troubleshooting Procedure 6–67. . . . . . . . . . . . . . . .
Figure 6–35: Horizontal and Vertical Sync Signals 6–68. . . . . . . . . . . . . . .
Figure 6–36: A Video Signal with White, Black, and Blanking Levels 6–68
Figure 6–37: Processor/Acquisition Troubleshooting Procedure 6–69. . . .
Figure 6–38: Processor/Front Panel Troubleshooting Procedure 6–70. . . .
Figure 6–39: Attenuator/Acquisition Troubleshooting Procedure 6–71. .
Figure 6–40: A11 DRAM Processor/Display Module (View
of Right Side) 6–72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–41: A11 DRAM Processor/Display Module (View of
Lower Left Corner) 6–73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9–1: Interconnections 9–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9–2: Block Diagram 9–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–1: Cabinet and Front Panel 10–5. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–2: Outer-Chassis Modules 10–7. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–3: Inner-Chassis Modules – A30 Display Shown 10–8. . . . . . . .
Figure 10–4: Cables 10–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–5: Floppy Disk 10–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
TDS 510A Service Manual
List of Tables
Table of Contents
Table 1–1: Record Length vs. Divisions per Record, Samples Per
Division, and Sec/Div Sequence 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–2: Nominal Traits — Signal Acquisition System 1–9. . . . . . . . . .
Table 1–3: Nominal Traits — Time Base System 1–10. . . . . . . . . . . . . . . .
Table 1–4: Nominal Traits — Triggering System 1–11. . . . . . . . . . . . . . . .
Table 1–5: Nominal Traits — Display System 1–11. . . . . . . . . . . . . . . . . . .
Table 1–6: Nominal Traits — Interfaces, Output Ports, and
Power Fuse 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–7: Nominal Traits — Mechanical 1–12. . . . . . . . . . . . . . . . . . . . . .
Table 1–8: Warranted Characteristics — Signal Acquisition System 1–15
Table 1–9: Warranted Characteristics — Time Base System 1–16. . . . . .
Table 1–10: Warranted Characteristics — Triggering System 1–17. . . . .
Table 1–11: Warranted Characteristics — Interfaces, Output Ports
and Power Requirements 1–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–12: Warranted Characteristics — Environmental, Safety,
and Reliability 1–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–13: Typical Characteristics — Signal Acquisition System 1–19. .
Table 1–14: Typical Characteristics — Time Base System 1–20. . . . . . . . .
Table 1–15: Typical Characteristics — Triggering System 1–20. . . . . . . .
Table 1–16: Typical Characteristics — Data Handling 1–22. . . . . . . . . . . .
Table 1–17: Certifications and compliances 1–23. . . . . . . . . . . . . . . . . . . . .
TDS 510A Service Manual
Table 2–1: Power-Cord Conductor Identification 2–8. . . . . . . . . . . . . . . .
Table 2–2: Effects of Corrupted Data 2–11. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1: Test Equipment 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–2: DC Offset Accuracy (Zero Setting) 4–28. . . . . . . . . . . . . . . . . .
Table 4–3: DC Voltage Measurement Accuracy 4–31. . . . . . . . . . . . . . . . .
Table 4–4: Analog Bandwidth 4–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–5: Delay Between Channels Worksheet 4–42. . . . . . . . . . . . . . . . .
Table 5–1: Calibration Tests 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–2: Adjustments Required for Module Replaced 5–4. . . . . . . . . .
Table 5–3: Adjustments and Dependencies 5–4. . . . . . . . . . . . . . . . . . . . .
Table 5–4: Test Equipment, Fixtures, and Supplies 5–5. . . . . . . . . . . . . .
Table 5–5: GPIB Board Configuration1 5–7. . . . . . . . . . . . . . . . . . . . . . . .
vii
Table of Contents
Table 6–1: Relative Susceptibility to Static-Discharge Damage 6–2. . . . .
Table 6–2: External Inspection Check List 6–6. . . . . . . . . . . . . . . . . . . . .
Table 6–3: Internal Inspection Check List 6–7. . . . . . . . . . . . . . . . . . . . . .
Table 6–4: Tools Required for Module Removal 6–11. . . . . . . . . . . . . . . . .
Table 6–5: Normal Supply Voltages (Measured on J26 and J27 on
the A11 DRAM Processor/Display Module) 6–66. . . . . . . . . . . . . . . . .
Table 6–6: No-Load Supply Voltages (Measured on J5 and J6 on the
A17 Main LV Power Supply Module) 6–66. . . . . . . . . . . . . . . . . . . . . .
Table 7–1: International Power Cords 7–1. . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–2: Standard Accessories 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–3: Probe Accessories 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–4: Optional Accessories 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–5: Probe Accessories 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–6: Accessory Software 7–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–7: 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii
TDS 510A Service 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.
Injury Precautions
Use Proper Power Cord. To avoid fire hazard, use only the power cord specified
for this product.
Avoid Electric Overload. To avoid electric shock or fire hazard, do not apply a
voltage to a terminal that is outside the range specified for that terminal.
Avoid Electric Shock. To avoid injury or loss of life, do not connect or disconnect
probes or test leads while they are connected to a voltage source.
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.
Do Not Operate Without Covers. To avoid electric shock or fire hazard, do not
operate this product with covers or panels removed.
Use Proper Fuse. To avoid fire hazard, use only the fuse type and rating specified
for this product.
Do Not Operate in Wet/Damp Conditions. To avoid electric shock, do not operate
this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere. To avoid injury or fire hazard, do not
operate this product in an explosive atmosphere.
Product Damage
Precautions
TDS 510A Service Manual
Use Proper Power Source. Do not operate this product from a power source that
applies more than the voltage specified.
Provide Proper Ventilation. To prevent product overheating, provide proper
ventilation.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
ix
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:
DANGER
High Voltage
Protective Ground
(Earth) T erminal
ATTENTION
Refer to Manual
Double
Insulated
x
TDS 510A Service 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 main 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 510A Service Manual
xi
Service Safety Summary
xii
TDS 510A Service Manual
Preface
Manual Structure
This preface contains information needed to properly use this manual to service
the TDS 510A Digitizing Oscilloscope, as well as general information critical to
safe and effective servicing of this oscilloscope.
This manual is divided into sections, such as Specification and Theory of
Operation. Further, it is divided into subsections, such as Product Description
and Removal and Installation Procedures.
Sections containing procedures also contain introductions to those procedures.
Be sure to read these introductions because they provide information needed to
do the service correctly and efficiently. The following is a brief description of
each manual section.
H Specification contains a product description of the TDS 510A Digitizing
Oscilloscope and tables of the characteristics and descriptions that apply to
it.
H Operating Information includes general information and operating instruc-
tions at the level needed to safely power on and service this oscilloscope. A
statement of the service strategy that this manual supports, and instructions
for shipment of the oscilloscope are found in this section.
H Theory of Operation contains circuit descriptions that support general service
and fault isolation.
H Performance Verification contains a collection of procedures for confirming
that this oscilloscope functions properly and meets warranted limits.
H Adjustment Procedures contains a collection of procedures for adjusting this
oscilloscope to meet warranted limits.
H Maintenance contains information and procedures for doing preventive and
corrective maintenance of this oscilloscope. Instructions for cleaning, for
module removal and installation, and for fault isolation to a module are
found here.
H Options contains information on servicing any of the factory-installed
options that may be present in your oscilloscope.
H Electrical Parts List contains a statement referring you to Mechanical
Replaceable Parts, where both electrical and mechanical modules are listed.
TDS 510A Service Manual
xiii
Preface
Manual Conventions
H Diagrams contains a block diagram and an interconnection diagram useful
for isolating failed modules.
H Mechanical Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
This manual uses certain conventions which you should become familiar with
before doing service.
Modules
Safety
Symbols
Throughout this manual, any replaceable component, assembly, or part of these
oscilloscope is referred to generically as a module. In general, a module is an
assembly, like a circuit board, rather than a component, like a resistor or an
integrated circuit. Sometimes a single component is a module; for example, each
chassis part of the oscilloscope is a module.
Symbols and terms related to safety appear in the Safety Summary found at the
beginning of this manual.
Besides the symbols related to safety, this manual uses the following symbols:
STOP. The stop labels information which must be read in order to correctly do
service and to avoid incorrectly using or applying service procedures.
The clock icon labels procedure steps which require a pause to wait for
the oscilloscope to complete some operation before you can continue.
Various icons such as the example icon at the left are used in procedures
to help identify certain readouts and menu functions on screen.
Related Manuals
xiv
The TDS 510A Digitizing Oscilloscope comes with the following manuals:
TDS 420A, TDS 430A, TDS 460A & TDS 510A User Manual contains a tutorial
to quickly show you how to operate the TDS 510A Digitizing Oscilloscope and
an in depth discussion of how to more completely use their features. Applications are also discussed.
TDS 420A, TDS 430A, TDS 460A & TDS 510A Reference contains a brief
overview of oscilloscope operation.
TDS 510A Service Manual
Preface
TDS Family Programmer Manual contains information for programmed
operation via the GPIB interface. Included are the complete command set, setup
information, and programming examples.
TDS 510A Technical Reference contains performance verification procedures and
specifications.
TDS 510A Service Manual
xv
Preface
xvi
TDS 510A Service Manual
Introduction
Service Strategy
STOP. Throughout this manual, any field-replaceable component, assembly, or
part of this oscilloscope is referred to generically as a module.
This manual contains all the information needed for periodic maintenance of the
TDS 510A Digitizing Oscilloscope. (Examples of such information are
procedures for checking performance and for readjustment.) Further, it contains
all information for corrective maintenance down to the module level. This means
that the procedures, diagrams, and other troubleshooting aids help isolate failures
to a specific module, rather than to components of that module. Once a failure is
isolated, replace the module with a fresh unit obtained from the factory.
All modules are listed in Mechanical Parts List. To isolate a failure to a module,
use the fault isolation procedures found in Section 6, Maintenance Information.
To remove and replace any failed module, follow the instructions in Removal
and Installation Procedures, also found in Section 6.
Service Offerings
Warranty Repair Service
Repair or Calibration
Service
Tektronix provides service to cover repair under warranty as well as other
services that may provide a cost-effective answer to your service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians, trained on Tektronix products, are best
equipped to service your TDS 510A Digitizing Oscilloscope. Tektronix
technicians are appraised of the latest information on improvements to the
product as well as the latest new options to the product.
Tektronix warrants this product for three years from date of purchase, excluding
probes for which the warranty is one year. (The warranty appears after the title
page and copyright page in this manual.) Tektronix technicians provide warranty
service at most Tektronix service locations worldwide. Your Tektronix product
catalog lists all service locations worldwide.
The following services may be purchased to tailor repair and/or calibration of
your TDS 510A Digitizing Oscilloscope to fit your requirements.
TDS 510A Service Manual
xvii
Introduction
Option 95. The oscilloscope, when ordered with option 95, is shipped with a Test
Data Report.
At-Depot Service. Tektronix offers several standard-priced adjustment (calibration) and repair services:
H A single repair and/or adjustment.
H Calibrations using equipment and procedures that meet the traceability
standards specific to the local area.
H Annual maintenance agreements that provide for either calibration and repair
or calibration only of the oscilloscope.
Of these services, the annual maintenance agreement offers a particularly
cost-effective approach to service for many owners of the TDS 510A Digitizing
Oscilloscope. Such agreements can be purchased to span several years.
On-Site Service. The annual maintenance agreement can be purchased with
on-site service, with repair and calibration done at your facility. This service
reduces the time your oscilloscope is out of service when calibration or repair is
required.
Self Service
Tektronix supports repair to the module level by providing Module Exchange
and Module Repair and Return.
Module Exchange. This service reduces down time for repair by allowing you to
exchange most modules for remanufactured ones. Tektronix ships you an
updated and tested exchange module from the Beaverton, Oregon service center,
typically within 24 hours. Each module comes with a 90-day service warranty.
Module Repair and Return. This service returns to you within 10 days the same
module that you shipped to Tektronix. The module shipped is repaired, tested,
and returned to you from the Beaverton, Oregon service center. It is not updated
to match current modules of the same type. Again, each module comes with a
90-day service warranty.
For More Information. Contact your local Tektronix service center or sales
engineer for more information on any of the repair or adjustment services just
described.
xviii
TDS 510A Service Manual
Before You Begin
Introduction
This manual is for servicing the TDS 510A Digitizing Oscilloscope. To prevent
injury to yourself or damage to the oscilloscope, do the following tasks before
you attempt service:
H Be sure you are a qualified service person.
H Read the Safety Summary found at the beginning of this manual.
H Read Service Strategy in this section and Supplying Operating Power in
section 2.
When using this manual for servicing, be sure to heed all warnings, cautions, and
notes.
TDS 510A Service Manual
xix
Introduction
xx
TDS 510A Service Manual
Specifications
This chapter begins with a general description of the traits of the TDS 510A
Digitizing Oscilloscope. Three sections follow, one for each of three classes of
traits: nominal traits, warranted characteristics, and typical characteristics.
General Product Description
The TDS 510A is a portable, four-channel oscilloscope suitable for use in a
variety of test and measurement applications and systems. Key features include:
H 500 MHz maximum analog bandwidth
H 500 Megasamples/second maximum digitizing rate
H Four-channel acquisition
H Extensive triggering capabilities: including edge, logic, and glitch; optional
NTSC, PAL, SECAM, HDTV, and FlexFormat
video trigger modes
H Waveform Math — Invert a single waveform and add, subtract, and multiply
two waveforms, and optionally integrate or differentiate a single waveform
or perform an FFT (fast fourier transform) on a waveform to display its
magnitude or phase versus its frequency
H Eight-bit digitizers
H Up to 50,000-point record length per channel
H Full GPIB software programmability; hardcopy output using GPIB, RS-232,
or Centronics ports (RS-232 and Centronics are option 13)
H Complete measurement and documentation capability
H Intuitive graphic icon operation blended with the familiarity of traditional
horizontal and vertical knobs
H On-line help at the touch of a button
H A full complement of advanced functions, like continuously updated
measurement results and local pass/fail decision making
TM
(user definable format)
TDS 510A Service Manual
H Specialized display modes, including variable persistence, dot or vector
mode, sin(x)/x or linear display filters, and Fit-to-Screen compression of the
waveform record to fit on the screen
1–1
Specifications
User Interface
H A complement of advanced acquisition modes such as peak-detect, high-res-
olution, sample, envelope, and average
H A unique graphical user interface (GUI), an on-board help mode, and a
logical front-panel layout
H VGA output for driving remote monitors
H NVRAM and an optional 1.44 Mbyte, DOS 3.3 or later, floppy disk drive for
saving waveforms and oscilloscope setups
Use a combination of front-panel buttons, knobs, and on-screen menus to control
the many functions of this oscilloscope. The front-panel controls are grouped
according to function: vertical, horizontal, trigger, and special. Set a function you
adjust often, such as vertical positioning or the time base setting, directly by its
own front-panel knob. Set functions which you change less often, such as
vertical coupling and horizontal mode, indirectly using selected menus.
Menus
Indicators
General Purpose Knob
GUI
Pressing one (sometimes two) front-panel button(s), such as vertical menu,
displays a main menu of related functions, such as coupling and bandwidth at the
bottom of the screen. Pressing a main-menu button, such as coupling, displays a
side menu of settings for that function, such as AC, DC, or GND (ground)
coupling, at the right side of the screen. Pressing a side-menu button selects a
setting such as DC.
On-screen readouts help you keep track of the settings for various functions,
such as vertical and horizontal scale and trigger level. Some readouts use the
cursors or the automatic parameter extraction feature (called measure) to display
the results of measurements made or the status of the instrument.
Assign the general purpose knob to adjust a selected parameter function. Change
parameters more quickly by toggling the SHIFT button. Use the same method as
for selecting a function, except the final side-menu selection assigns the general
purpose knob to adjust some function, such as the position of measurement
cursors on screen, or the setting for fine gain.
The user interface also makes use of a GUI, or Graphical User Interface, to make
setting functions and interpreting the display more intuitive. Some menus and
status are displayed using iconic representations of function settings such as
those shown here for Full, 100 MHz, and 20 MHz bandwidth. Such icons allow
you to more readily determine status or the available settings.
1–2
TDS 510A Service Manual
Signal Acquisition System
The signal acquisition system provides four vertical channels with calibrated
vertical scale factors from 1 mV to 10 V per division. All four channels can be
acquired simultaneously.
Each of the four channels can be displayed, vertically positioned, and offset, can
have their bandwidth limited (100 MHz or 20 MHz) and their vertical coupling
specified. Fine gain can also be adjusted.
Besides the four channels, up to three math waveforms and four reference
waveforms are available for display. (A math waveform results when dual
waveform operations, such as add, are specified on any two channels. A
reference waveform results when you save a live waveform in a reference
memory.)
Horizontal System
Specifications
Trigger System
There are three horizontal display modes: main only, main intensified, and
delayed only. You can select among various horizontal record length settings.
A feature called “Fit to Screen” allows the user to view entire waveform records
within a 10 to 15 division screen area. In other words, waveforms are compressed to fit on the screen.
You can delay by time with respect to the main trigger both the delayed display
and the intensified zone on the main intensified display. You can set them to
display immediately after the delay (delayed runs after main mode). The delayed
display can also be set to display at the first valid trigger after the delay (delayed
triggerable mode).
You can also delay by a selected number of events the delayed display (or the
intensified zone). In this case, the events source is the delayed trigger source. For
any events signal, the delayed-trigger system conditions the signal by determining the source, coupling, and so on, of that signal.
The triggering system supports a varied set of features for triggering the
signal-acquisition system. Trigger signals recognized include:
TDS 510A Service Manual
H Edge (main- and delayed-trigger systems): This familiar type of triggering is
fully configurable for source, slope, coupling, mode (auto or normal), and
holdoff.
H Logic (main-trigger system): This type of triggering can be based on pattern
(asynchronous) or state (synchronous). In either case, logic triggering is
1–3
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