Tektronix 3026 Service Manual
Service Manual
3026
3 GHz Real Time Spectrum Analyzer
071-0420-00
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 the Safety Summary prior to
performing service.
Copyright E Sony/T ektronix Corporation. All rights reserved.
Copyright E Tektronix, 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 Japan.
Sony/T ektronix Corporation, P.O.Box 5209, Tokyo Int’l, T okyo 100–31 Japan
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 one (1) year 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.
Tektronix 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.
Table of Contents
Specifications
Operating Information
General Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction xix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Overview 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
W arranted Characteristics 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ypical Characteristics 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal Traits 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification and Compliances 1–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplying Operating Power 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applying and Interrupting Power 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging Instructions 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installed Options 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparations 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turning On the Power 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Observing Spectrum 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dividing the Display Area and Changing the Display Mode 2–12. . . . . . . . . . . . . . .
Using the Block Mode to Acquire Data 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Dual Markers 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger and Mask Pattern 2–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the Display Frame 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutting Power Off 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation
Theory of Operation 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Overview 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
Performance Verification
Performance Verification 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self Tests 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance T ests 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prerequisites 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 MHz Reference Output T est 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 MHz Reference Input T est 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Frequency Accuracy T est 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flatness and Aliasing T est 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Attenuator T est 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Span and Center Frequency T est 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frame Update Interval T est 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Trigger Test 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Trigger Test 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C/N T est 4–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Reference Level T est 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Flatness T est 4–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Record 4–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedures
Maintenance
Adjustment Procedures 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements for Adjustments 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Maintenance Procedures 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation Procedures 6–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Access Procedure 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for External Modules 6 –19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Internal Modules 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Board Modules 6–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Power Supply Modules 6–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Rear Panel Modules 6–55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6–59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Procedure 6–59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostics 6–60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symptoms and Faulty Modules 6–78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing the BIOS 6–81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the BIOS Parameters 6–83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backing Up the System Files 6–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3026 3 GHz Real Time Spectrum Analyzer Service Manual
Options
Electrical Parts List
Diagrams
Mechanical Parts List
Table of Contents
Options and Accessories 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Parts List 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3026 3 GHz Real Time Spectrum Analyzer Service Manual
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Table of Contents
List of Figures
Figure 2–1: Power switch 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: RF INPUT connector 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–3: System information 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4: Initial screen 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5: START/STOP button 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–6: Typical spectrum display (16 MHz center frequency
and 10 MHz span) 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7: Buttons in DISPLAY area 2–12. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–8: Spectrogram display (upper) and spectrum display
(lower) 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–9: SELECT button 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–10: Waterfall display and spectrum display 2–14. . . . . . . . . . . . .
Figure 2–11: ROLL BLOCK button 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–12: Data acquisition in the Block mode 2–16. . . . . . . . . . . . . . . . .
Figure 2–13: Displaying dual markers 2–17. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–14: MARKER TOGGLE button 2–18. . . . . . . . . . . . . . . . . . . . . .
Figure 2–15: Measurement of frequency difference with dual
markers 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–16: Creation of trigger region 2–21. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–17: Created trigger mask (blue region) 2–22. . . . . . . . . . . . . . . . .
Figure 2–18: Waveform display before triggering 2–23. . . . . . . . . . . . . . . .
Figure 2–19: Frame in which trigger occurred 2–25. . . . . . . . . . . . . . . . . .
Figure 4–1: Display of the self test results 4–3. . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: CAL NEED indication in status indication area 4–5. . . . . . .
Figure 4–3: Initial test hookup 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–4: Initial test hookup 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–5: Modified test hookup 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6: Initial test hookup 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–7: Initial test hookup 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Initial test hookup 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–9: Initial test hookup 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–10: Initial test hookup 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–11: Initial test hookup 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–12: Creating a trigger mask 4–27. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–13: Initial test hookup 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Table of Contents
Figure 4–14: Initial test hookup 4–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–15: Initial hookup for setting up the power meter and
sensor 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–16: Hookup for calibrating the power sensor 4–35. . . . . . . . . . . .
Figure 4–17: Hookup for setting the signal generator 4–36. . . . . . . . . . . . .
Figure 4–18: Hookup for checking the reference level accuracy 4–36. . . .
Figure 4–19: Initial test hookup 4–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–20: Running the RF flatness check program on PC 4–39. . . . . .
Figure 5–1: Accessing the A5 Baseband board 5–5. . . . . . . . . . . . . . . . . . .
Figure 5–2: Adjustment and connector location 5–6. . . . . . . . . . . . . . . . .
Figure 5–3: Test hookup 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–4: Initial test hookup 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–5: Loading the adjustment file from the floppy disk 5–9. . . . . .
Figure 5–6: Calibration & Set Constant menu 5–10. . . . . . . . . . . . . . . . . . .
Figure 5–7: Initial hookup for setting up the power meter and
sensor 5–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–8: Hookup for calibrating the power sensor 5–12. . . . . . . . . . . . .
Figure 5–9: Test hookup 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–10: Initial hookup for setting up the power meter and
sensor 5–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–11: Hookup for calibrating the power sensor 5–15. . . . . . . . . . . .
Figure 5–12: Test hookup 5–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–13: Running the SG flatness measurement program on
PC 5–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–14: Label location 5–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–15: Serial number entry 5–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–16: Test hookup 5–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–1: 3026 orientation 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–2: Guide to removal procedures 6–13. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–3: External modules 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–4: Internal modules 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–5: Board modules 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: Power supply modules 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–7: Rear panel modules 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–8: Front-panel knob removal 6–20. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–9: Line cord removal 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–10: Rear cover and cabinet removal 6–23. . . . . . . . . . . . . . . . . . .
Figure 6–11: Trim ring and menu buttons removal 6–25. . . . . . . . . . . . . . .
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Table of Contents
Figure 6–12: Front-panel assembly removal 6–26. . . . . . . . . . . . . . . . . . . .
Figure 6–13: Disassembly of front-panel assembly 6–27. . . . . . . . . . . . . . .
Figure 6–14: Front-panel connectors removal 6–29. . . . . . . . . . . . . . . . . . .
Figure 6–15: Opening the top chassis 6–31. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–16: Fan and fan frame removal 6–32. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–17: Floppy disk drive removal 6–33. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–18: Opening the down-converter chassis 6–34. . . . . . . . . . . . . . .
Figure 6–19: Hard disk drive and solid state disk removal 6–35. . . . . . . . .
Figure 6–20: Display module removal 6–37. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–21: Board retainer and shield cover removal 6–39. . . . . . . . . . . .
Figure 6–22: Daughter boards removal 6–42. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–23: A1 Mother board removal – Top side 6–44. . . . . . . . . . . . . . .
Figure 6–24: A1 Mother board removal – Bottom side 6–45. . . . . . . . . . . .
Figure 6–25: Down-converter and A5 Baseband board removal 6–47. . . .
Figure 6–26: A13 Filter board removal 6–49. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–27: A11 and A12 DC Power boards removal 6–51. . . . . . . . . . . .
Figure 6–28: A10 Sub Power board and Power Supply removal 6–53. . . .
Figure 6–29: Power supply removal 6–54. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–30: Rear panel modules removal 6–57. . . . . . . . . . . . . . . . . . . . . .
Figure 6–31: Rear BNC cable assembly removal 6–58. . . . . . . . . . . . . . . . .
Figure 6–32: Troubleshooting procedure 1 — Power supply
modules 6–61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–33: Troubleshooting procedure 2 — Signal processing
modules 6–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–34: Troubleshooting procedure 3 — Clock modules 6–66. . . . . .
Figure 6–35: Troubleshooting procedure 4 — LCD display modules 6–68
Figure 6–36: Troubleshooting procedure 5 — CPU modules 6–69. . . . . . .
Figure 6–37: Troubleshooting procedure 6 — Front panel modules 6–70.
Figure 6–38: Location of the A11 and A12 DC Power boards 6–71. . . . . .
Figure 6–39: Location of the A5 Baseband and A13 Filter board 6–72. . .
Figure 6–40: Location of the A6 FFT board 6–73. . . . . . . . . . . . . . . . . . . . .
Figure 6–41: Location of the A7 DDC board 6–74. . . . . . . . . . . . . . . . . . . .
Figure 6–42: Location of the A8 Memory board 6–75. . . . . . . . . . . . . . . . .
Figure 6–43: U100 down-converter location 6–76. . . . . . . . . . . . . . . . . . . . .
Figure 6–44: LCD wire location 6–77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–45: Connecting the keyboard 6–82. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–46: BIOS SETUP screen 6–83. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–47: STANDARD CMOS SETUP screen 6–84. . . . . . . . . . . . . . . .
Figure 6–48: BIOS FEATURES SETUP screen 6–85. . . . . . . . . . . . . . . . . .
vi
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Table of Contents
Figure 9–1: Block diagram 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9–2: Interconnect diagram 9–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–1: External modules 10–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–2: Front panel modules 10–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–3: Internal modules 10–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–4: Power supply modules 10–11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–5: Board modules – 110–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–6: Board modules – 210–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–7: Cables 10–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3026 3 GHz Real Time Spectrum Analyzer Service Manual
vii
Table of Contents
List of Tables
Table 1–1: Warranted characteristics — Frequency 1–4. . . . . . . . . . . . .
Table 1–2: Warranted characteristics — Amplitude 1–4. . . . . . . . . . . . .
Table 1–3: Warranted characteristics — Realtime span 1–5. . . . . . . . . .
Table 1–4: Warranted characteristics — Trigger/Acquisition 1–5. . . . .
Table 1–5: Warranted characteristics — Installation requirements 1–6
Table 1–6: Warranted characteristics — Environmental 1–6. . . . . . . . .
Table 1–7: T ypical characteristics — Amplitude 1–7. . . . . . . . . . . . . . . .
Table 1–8: T ypical characteristics — Filter 1–7. . . . . . . . . . . . . . . . . . . .
Table 1–9: T ypical characteristics — Trigger/Acquisition 1–7. . . . . . . .
Table 1–10: T ypical characteristics — Installation requirements 1–7. .
Table 1–11: Nominal traits — Frequency 1–9. . . . . . . . . . . . . . . . . . . . . .
Table 1–12: Nominal traits — Amplitude 1–9. . . . . . . . . . . . . . . . . . . . . .
Table 1–13: Nominal traits — FFT 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–14: Nominal traits — Filter 1–11. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–15: Nominal traits — Trigger/Acquisition 1–11. . . . . . . . . . . . . .
Table 1–16: Nominal traits — System control 1–12. . . . . . . . . . . . . . . . . .
Table 1–17: Nominal traits — AC line power 1–12. . . . . . . . . . . . . . . . . . .
Table 1–18: Nominal traits — Mechanical 1–12. . . . . . . . . . . . . . . . . . . . .
Table 1–19: Certifications and compliances 1–13. . . . . . . . . . . . . . . . . . . . .
viii
Table 2–1: Power-cord conductor identification 2–2. . . . . . . . . . . . . . . . .
Table 2–2: Power cord identification 2–2. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1: Performance tests 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–2: Test equipment 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–3: Level accuracy 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–4: The instrument settings for the span and center
frequency test 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–5: The instrument settings for the RF reference level test 4–37. .
Table 5–1: Adjustments 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–2: Test equipment 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–1: Relative susceptibility to static-discharge damage 6–3. . . . . .
Table 6–2: External inspection check list 6–5. . . . . . . . . . . . . . . . . . . . . . .
Table 6–3: Internal inspection check list 6–6. . . . . . . . . . . . . . . . . . . . . . .
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Table of Contents
Table 6–4: Summary of procedures 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–5: Tools required for module removal 6–11. . . . . . . . . . . . . . . . . .
Table 6–6: Normal supply voltage 6–72. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–7: Symptoms and faulty modules 6–78. . . . . . . . . . . . . . . . . . . . . .
Table 6–8: 3026 system files 6–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–1: Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–2: Standard accessories 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–3: Optional accessories 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3026 3 GHz Real Time Spectrum Analyzer Service Manual
ix
Table of Contents
x
3026 3 GHz Real Time Spectrum Analyzer 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.
To Avoid Fire or
Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Use Proper Voltage Setting. Before applying power, ensure that the line selector is
in the proper position for the power source being used.
Connect and Disconnect Properly. 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.
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.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
3026 3 GHz Real Time Spectrum Analyzer Service Manual
xi
General Safety Summary
Symbols and Terms
Terms 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.
Terms 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) Terminal
CAUTION
Refer to Manual
Double
Insulated
xii
3026 3 GHz Real Time Spectrum Analyzer 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 mains power by means
of the power cord or, if provided, the power switch.
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.
3026 3 GHz Real Time Spectrum Analyzer Service Manual
xiii
Service Safety Summary
xiv
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Preface
Manual Structure
This is the service manual for the 3026 Real Time Spectrum Analyzer. The
manual contains information needed to service the analyzer to the module level.
This manual is divided into sections, such as Specifications and Theory of
Operation. Further, some sections are 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 contains a brief description
of each manual section.
H
Specifications contains a description of the analyzer and the characteristics
that apply to it.
H
Operating Information includes general information and operating
instructions.
H
Theory of Operation contains circuit descriptions that support service to the
module level.
H
Performance Verification contains procedures for confirming that the
analyzer functions properly and meets warranted limits.
H
Adjustment Procedures contains a collection of procedures for adjusting the
analyzer to meet warranted limits.
H
Maintenance contains information and procedures for performing preventive
and corrective maintenance of the analyzer. These instructions include
cleaning, module removal and installation, and fault isolation to the module.
H
Options contains information on servicing factory-installed options.
H
Electrical Parts List contains a statement referring you to Mechanical Parts
List, where both electrical and mechanical modules are listed.
H
Diagrams contains an block diagram and an interconnection diagram.
H
Mechanical Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
3026 3 GHz Real Time Spectrum Analyzer Service Manual
xv
Preface
Manual Conventions
This manual uses certain conventions that you should become familiar with.
Some sections of the manual contain procedures for you to perform. To keep
those instructions clear and consistent, this manual uses the following conventions:
H
Names of front panel controls and menus appear in the same case (initial
capitals, all uppercase, etc.) in the manual as is used on the analyzer front
panel and menus. Front panel names are all upper-case letters; for example,
DISPLAY, MEASURE, SETUP etc.
H
Instruction steps are numbered unless there is only one step.
Modules
Safety
Throughout this manual, any replaceable component, assembly, or part of the
analyzer 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, the
chassis of the analyzer is a module.
Symbols and terms related to safety appear in the Safety Summary near the
beginning of this manual.
Finding Other Information
Other documentation for the 3026 includes:
H
H
The 3026 Real Time Spectrum Analyzer User Manual contains a tutorial to
quickly describe how to operate the analyzer. It also includes an in-depth
discussion on how to more completely use the analyzer features.
The 3026 Real Time Spectrum Analyzer Programmer Manual explains how
to use the GPIB and LAN interfaces to remotely control the analyzer.
xvi
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Contacting Tektronix
Preface
Product
Support
Service
Support
For other
information
To write us
Website
For application-oriented questions about a Tektronix measurement product, call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time
Or contact us by e-mail:
tm_app_supp@tek.com
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Tektronix offers extended warranty and calibration programs as
options on many products. Contact your local Tektronix
distributor or sales office.
For a listing of worldwide service locations, visit our web site.
In North America:
1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
Tektronix, Inc.
P.O. Box 1000
Wilsonville, OR 97070-1000
USA
Tektronix.com
3026 3 GHz Real Time Spectrum Analyzer Service Manual
xvii
Preface
xviii
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Introduction
This manual contains information needed to properly service the 3026 Real Time
Spectrum Analyzer as well as general information critical to safe and effective
servicing.
To prevent personal injury or damage to the analyzer, consider the following
before attempting service:
H
The procedures in this manual should be performed only by a qualified
service person .
H
Read the General Safety Summary and the Service Safety Summary,
beginning on page xi.
H
Read Preparation for Use in section 2, Operating Information.
When using this manual for servicing, be sure to follow all warnings, cautions,
and notes.
Performance Check Interval
Strategy for Servicing
Generally, the performance check described in section 4, Performance Verification, should be done every 12 months. In addition, performance check is
recommended after module replacement.
If the analyzer does not meet performance criteria, repair is necessary.
Throughout this manual, the term, module, refers to any field-replaceable
component, assembly, or part of the analyzer.
This manual contains all the information needed for periodic maintenance of the
analyzer (Examples of such information are procedures for checking performance).
Further, it contains all information for corrective maintenance down to the
module level. To isolate a failure to a module, use the fault isolation procedures
found in Troubleshooting, part of section 6, Maintenance. To remove and replace
any failed module, follow the instructions in Removal and Installation Proce-
dures, also part of section 6. After isolating a faulty module, replace it with a
fully-tested module obtained from the factory. Section 10, Mechanical Parts
List, contains part number and ordering information for all replaceable modules.
3026 3 GHz Real Time Spectrum Analyzer Service Manual
xix
Preface
xx
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Specifications
Product Overview
The 3026 is a portable real time 3 GHz spectrum analyzer with real-time
frequency analysis functions.
The incorporated 3 GHz down converter enables you to perform spectrum
analysis, time domain analysis, and analog modulation analysis of Radio
Frequency (RF) signals without connecting any external devices.
The 3026, with the adoption of new architecture, can acquire time and frequency
domain data simultaneously. It can also accurately capture various kinds of
signals with a wide variety of triggering functions.
Real-time trigger functions in frequency domain allow you to trigger on
instantaneous events such as the starting point of a burst signal.
Using the trigger functions in time domain, triggering is available on impulse
noises which are barely captured in frequency domain.
In addition, the 3026 provides measurement functions that can evaluate the
performance of radio devices with simple operation. Moreover, four types of data
display functions offered in the system can allow you to analyze the acquired
data more precisely.
Features
The 3026 has the following features:
H
Measurement frequency range: 50 Hz to 3 GHz
H
Measurement span: 100 Hz to 3 GHz
H
Complete real time frequency analysis
H
Concurrent processing of real time frequency analysis and analog modulation analysis
H
Provides comprehensive measurement functions to evaluate radio devices
such as occupied bandwidth (OBW), adjacent channel leakage power (ACP)
and power consumption.
H
Four types of data display:
H
Spectrum display
H
Spectrogram display
H
Waterfall display
H
Analog demodulation display (AM, PM, FM, and FSK)
3026 3 GHz Real Time Spectrum Analyzer Service Manual
1–1
Specifications
H
A range of trigger functions:
H
Mask pattern trigger
H
Level trigger
H
External trigger
H
Simultaneous data acquisition in frequency domain and time domain
H
6.5 inch full-color TFT display
H
Equipped with a hard disk drive and a 3.5 inch floppy disk drive
H
A selection of interface ports:
H
GPIB port
H
10 BASE-T port
H
VGA output port
Targets
H
Printer port
The 3026 can perform complete real time analysis for the following:
H
Analog modulation analysis (AM, PM, FM, and FSK)
H
Variation analysis in PLL frequency:
Jitter in reference oscillator of a mobile telephone, localization of a radio set,
HD read-out jitter, etc.
H
Analysis of momentary noise: Mixed noise, EMI measurement, etc.
H
Multi-path measurement: Measurement of electric wave environment
H
Electric wave interference: Radar interference
H
Electric wave analysis: Burst signals
1–2
3026 3 GHz Real Time Spectrum Analyzer Service Manual
Specifications
The specifications on the 3026 Real Time Spectrum Analyzer can be classified
into three sub-sections: Warranted Characteristics, Typical Characteristics and
Nominal Traits. Certifications and Compliances are also found at the last page in
this section.
Warranted Characteristics
This section lists the various warranted characteristics that describe the 3026
Real Time Spectrum Analyzer. Electrical and environmental characteristics are
also included.
Warranted characteristics are described in terms of quantifiable performance
limits which are warranted.
As stated above, this section lists only warranted characteristics. A list of typical
characteristics starts on page 1–7.
Performance Conditions
The performance limits in this specification are valid with these conditions:
H
The analyzer must have been calibrated/adjusted at an ambient temperature
_
between +20
H
The analyzer must be in an environment with temperature, altitude,
humidity, and vibration within the operating limits described in these
specifications.
H
The analyzer must have had a warm-up period of at least 20 minutes.
H
The analyzer must be operating at an ambient temperature between +10
and +40
C and +30_ C.
_
C.
_
C
3026 3 GHz Real Time Spectrum Analyzer Service Manual
1–3
Specifications
Table 1–1: Warranted characteristics — Frequency
Characteristics Description PV reference page
Center frequency setting characteristic 0.1 Hz step
Spectrum purity –100 dBc/Hz (10 kHz offset) 4–32
Table 1–2: Warranted characteristics — Amplitude
Characteristics Description PV reference page
Reference level range
RF mode –50 dBm to +30 dBm
BASEBAND mode –30 dBm to +30 dBm
Maximum nondestructive input voltage +30 dBm
Internal gain calibration accuracy
Flatness
2-nd harmonic distortion
3-rd order distortion
Residual response
Image suppress
"
1.0 dB (at 25 MHz) 4–34
"
2.0 dB (>500 Hz), +2.0 dB and –5.0 dB (v500 Hz) 4–16, 4–38
v
–70 dBc (–10 dBfs input level)
v
–60 dBc (t20 MHz and v–10 dBfs input level)
v
–70 dBc (w20 MHz and v–10 dBfs input level)
v
–40 dBfs (vDC +10 bins)
v
–65 dBfs (center "2 bins)
v
–70 dBfs (other than above)
v
–70 dB
1–4
3026 3 GHz Real Time Spectrum Analyzer Service Manual
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