Tektronix HFS9009 Service Manual

Service Manual

HFS 9009 Stimulus System

070-8366-03

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.

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 this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such 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; or c) 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 WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER 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.

Specifications

Operating Information

Theory of Operation

General Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Nominal Traits 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

W arranted Characteristics 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T ypical Characteristics 1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu Selections 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resetting the HFS 9009 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting the Time Base 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The UNDO Button 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pulse Output 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module Descriptions 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mainframe 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Backplane 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supply 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fans 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cards 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CPU Card 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Time Base Card 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pulse Generator Cards 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Time Generator Cards 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification

Required Test Equipment 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T est Record 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Verification Sequence 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Check Procedures 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HFS 9009 Service Manual

Self Test 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Calibration 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Instrument Setup 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Level Checks (HFS 9DG1 Card Only) 4–13. . . . . . . . . . . . . . . . . . . . . . .

Output Level Checks (HFS 9DG2 and HFS 9PG2 Cards Only) 4–16. . . . . . . . .

Output Level Checks (HFS 9PG1 Card Only) 4–19. . . . . . . . . . . . . . . . . . . . . . .

Trigger Output Level 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rise Time and Fall T ime Checks (HFS 9PG1 and HFS 9DG1 Cards Only) 4–22

Rise Time and Fall T ime Checks (HFS 9PG2 and HFS 9DG2 Cards Only) 4–25

Edge Placement Checks 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency Accuracy Check 4–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Phase Lock Check 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

Adjustment Procedures

Maintenance

Adjustments 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preventive Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal and Replacement 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel Keypad and Encoder Switch 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display Module 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T op Panel Circuit Board and Trim Bezel 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ON/ST ANDBY Switch 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cards 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mainframe T op Cover 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supply (lower back panel) 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fans (upper back panel) 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fan (side panel) 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power-On Diagnostics 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Kernel-T est Diagnostics 6–1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controller-Test Diagnostics 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-Test Diagnostics 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-Test Diagnostics 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Calibration 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Error Indications 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bit Assignments For Diagnostic LEDs 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagnostic Procedure 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options Electrical Parts List Diagrams

Mechanical Parts List

Block Diagram 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replaceable Parts List 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HFS 9009 Service Manual

List of Figures

Contents

Figure 2–1: HFS 9009 Mainframe, Cards, and Front Panel 2–1. . . . . . . .

Figure 2–2: MAIN MENU, SELECT, and Arrow Button Locations 2–2.

Figure 2–3: Main Menu Display 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2–4: The Time Base Menu 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2–5: Mode set to Auto-Burst 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2–6: Controls and Connectors for the Pulse Generator, Data

Generator, and Time Base Cards 2–5. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 6–1: Clock Distribution Cable Location 6–6. . . . . . . . . . . . . . . . . .

Figure 6–2: HFS 9009 Power Supply (rear view) 6–8. . . . . . . . . . . . . . . . .

Figure 6–3: The Location of LEDs on the CPU Card 6–14. . . . . . . . . . . . .

Figure 6–4: Bit Assignments for Diagnostic LEDs 6–15. . . . . . . . . . . . . . . .

Figure 6–5: Diagnostic Procedure Flowchart 6–17. . . . . . . . . . . . . . . . . . . .

Figure 9–1: Module Block and Interconnection Diagram 9–2. . . . . . . . . .

Figure 10–1: Cabinet 10–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 10–2: Front Panel 10–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 10–3: Mainframe and Chassis Parts 10–9. . . . . . . . . . . . . . . . . . . . .

Figure 10–4: Power Supply and Fan Assembly 10–11. . . . . . . . . . . . . . . . . .

Figure 10–5: Circuit Cards 10–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HFS 9009 Service Manual

iii

Contents

List of Tables

Table 1–1: Nominal Traits — HFS 9PG1 Output Performance 1–1. . . .

Table 1–2: Nominal Traits — HFS 9PG2 Output Performance 1–2. . . .

Table 1–3: Nominal Traits — HFS 9DG1 Output Performance 1–3. . . .

Table 1–4: Nominal Traits — HFS 9DG2 Output Performance 1–3. . . .

Table 1–5: Nominal Traits — Time Base 1–4. . . . . . . . . . . . . . . . . . . . . . .

Table 1–6: Nominal Traits — Performance to External Frequency

Reference 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–7: Nominal Traits — Output Edge Placement Performance 1–5

Table 1–8: Nominal Traits — Transducer In Performance 1–5. . . . . . . .

Table 1–9: Nominal Traits — Skew Cal In Performance 1–5. . . . . . . . . .

Table 1–10: Nominal Traits — Trigger In Performance 1–6. . . . . . . . . . .

Table 1–11: Nominal Traits — Trigger Out Performance 1–6. . . . . . . . .

Table 1–12: Nominal Traits — Power Requirements 1–6. . . . . . . . . . . . .

Table 1–13: Nominal Traits — System Memory Performance 1–6. . . . .

Table 1–14: Nominal Traits — HFS 9003 Mechanical 1–7. . . . . . . . . . . .

Table 1–15: Nominal Traits — HFS 9009 Mechanical 1–7. . . . . . . . . . . .

Table 1–16: Warranted Characteristics — HFS 9PG1 Output

Performance 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–17: Warranted Characteristics — HFS 9PG2 Output

Performance 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–18: Warranted Characteristics — HFS 9DG1 Output

Performance 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–19: Warranted Characteristics — HFS 9DG2 Output

Performance 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–20: Warranted Characteristics — Time Base 1–9. . . . . . . . . . . .

Table 1–21: Warranted Characteristic — Performance to External

Frequency Reference 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–22: Warranted Characteristics — Output Edge Placement

Performance 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–23: Warranted Characteristics — Trigger Out Performance 1–10 Table 1–24: Warranted Characteristics — Power Requirements 1–10. . . Table 1–25: Warranted Characteristics — Environmental and

Safety 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–26: Typical Characteristics — Time Base 1–11. . . . . . . . . . . . . . .

Table 1–27: Typical Characteristics — HFS 9PG1 Output

Performance 1–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HFS 9009 Service Manual

Contents

Table 1–28: Typical Characteristics — HFS 9PG2 Output

Performance 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–29: Typical Characteristics — HFS 9DG1 Output

Performance 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–30: Typical Characteristics — HFS 9DG2 Output

Performance 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–31: Typical Characteristics — Performance to External

Frequency Reference 1–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1–32: Typical Characteristics — Transducer In Performance 1–13

Table 1–33: Typical Characteristics — Trigger In Performance 1–13. . . .

Table 1–34: Typical Characteristics — Trigger Out Performance 1–14. .

Table 1–35: Typical Characteristics — Power Requirements 1–14. . . . . .

Table 4–1: Required Test Equipment 4–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 4–2: Trigger Output Level and Phase Lock Test 4–3. . . . . . . . . . . .

Table 4–3: Test Record for HFS 9DG1 Card 4–4. . . . . . . . . . . . . . . . . . . .

Table 4–4: Test Record for HFS 9DG2 Card 4–6. . . . . . . . . . . . . . . . . . . .

Table 4–5: Test Record for HFS 9PG1 Card 4–7. . . . . . . . . . . . . . . . . . . .

Table 4–6: Test Record for HFS 9PG2 Card 4–9. . . . . . . . . . . . . . . . . . . .

Table 4–7: HFS 9DG1 Output Level Checks, First Settings 4–14. . . . . . .

Table 4–8: HFS 9DG1 Output Level Checks, Second Settings 4–14. . . . .

Table 4–9: HFS 9DG1 Output Level Checks, Third Settings 4–15. . . . . . .

Table 4–10: HFS 9DG1 Output Level Checks, Fourth Settings 4–15. . . . .

Table 4–11: HFS 9DG2 and HFS 9PG2 Output Level Checks, First

Settings 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 4–12: HFS 9DG2 and HFS 9PG2 Output Level Checks, Second

Settings 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 4–13: HFS 9PG2 Output Level Checks, Third Settings 4–18. . . . . .

Table 4–14: HFS 9PG2 Output Level Checks, Fourth Settings 4–18. . . . .

Table 4–15: HFS 9PG1 Output Level Checks, First Settings 4–19. . . . . . .

Table 4–16: HFS 9PG1 Output Level Checks, Second Settings 4–20. . . . .

Table 4–17: HFS 9PG1 Output Level Checks, Third Settings 4–20. . . . . .

Table 4–18: HFS 9PG1 Output Level Checks, Fourth Settings 4–21. . . . .

Table 4–19: Settings for Trigger Output Check 4–22. . . . . . . . . . . . . . . . .

Table 4–20: Settings for Rise Time and Fall Time Checks 4–23. . . . . . . . .

Table 4–21: DSO Settings for Rise/Fall Time Checks 4–24. . . . . . . . . . . . .

Table 4–22: Settings for Rise Time and Fall Time Checks 4–25. . . . . . . . .

Table 4–23: DSO Settings for Rise/Fall Time Checks 4–26. . . . . . . . . . . . .

Table 4–24: Settings for Edge Placement Checks 4–27. . . . . . . . . . . . . . . .

Table 4–25: Lead Delay Limits for HFS 9PG1 and HFS 9PG2 4–28. . . . .

HFS 9009 Service Manual

Contents

Table 4–26: Lead Delay Limits for HFS 9DG1 and HFS 9DG2 4–29. . . .

Table 4–27: Width Variance Limits for HFS 9PG1 4–29. . . . . . . . . . . . . . .

Table 4–28: Width Variance Limits for HFS 9DG1 4–30. . . . . . . . . . . . . .

Table 4–29: Width Limits for HFS 9PG1 and HFS 9PG2 4–30. . . . . . . . .

Table 4–30: Width Limits for HFS 9DG1 4–30. . . . . . . . . . . . . . . . . . . . . .

Table 4–31: Width Limits for HFS 9DG2 4–31. . . . . . . . . . . . . . . . . . . . . .

Table 4–32: Frequency Limits (HFS 9PG1 & HFS 9DG1) 4–32. . . . . . . . .

Table 4–33: Frequency Limits (HFS 9PG2) 4–32. . . . . . . . . . . . . . . . . . . . .

Table 4–34: Frequency Limits (HFS 9DG2) 4–33. . . . . . . . . . . . . . . . . . . .

Table 6–1: Results from *TST? 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 6–2: Troubleshooting From the Error Index Code 6–16. . . . . . . . . .

HFS 9009 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.

Only qualified personnel should perform service procedures.

Injury Precautions

Use Proper Power Cord

Avoid Electric Overload

Ground the Product

Do Not Operate Without

Covers

Use Proper Fuse

Do Not Operate in

Wet/Damp Conditions

Do Not Operate in

Explosive Atmosphere

To avoid fire hazard, use only the power cord specified for this product.

To avoid electric shock or fire hazard, do not apply a voltage to a terminal that is outside the range specified for that terminal.

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.

To avoid electric shock or fire hazard, do not operate this product with covers or panels removed.

To avoid fire hazard, use only the fuse type and rating specified for this product.

To avoid electric shock, do not operate this product in wet or damp conditions.

To avoid injury or fire hazard, do not operate this product in an explosive atmosphere.

Product Damage Precautions

Use Proper Power Source

Provide Proper Ventilation

HFS 9009 Service Manual

Do not operate this product from a power source that applies more than the voltage specified.

To prevent product overheating, provide proper ventilation.

vii

General Safety Summary

Do Not Operate With

Suspected Failures

If you suspect there is damage to this product, have it inspected by qualified service personnel.

Safety Terms and Symbols

Terms in This Manual

Terms on the Product

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.

These terms may appear on the product:

Symbols 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.

The following symbols may appear on the product:

DANGER

High Voltage

Protective Ground

(Earth) T erminal

ATTENTION

Refer to

Manual

Double

Insulated

viii

HFS 9009 Service Manual

Certifications and Compliances

General Safety Summary

CSA Certified Power

Cords

Compliances

CSA Certification includes the products and power cords appropriate for use in the North America power network. All other power cords supplied are approved for the country of use.

Consult the product specifications for IEC Installation Category, Pollution Degree, and Safety Class.

HFS 9009 Service Manual

General Safety Summary

HFS 9009 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

Disconnect Power

Use Care When Servicing

With Power On

Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.

To avoid electric shock, disconnect the main power by means of the power cord or, if provided, the power switch.

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.

HFS 9009 Service Manual

Service Safety Summary

xii

HFS 9009 Service Manual

Preface

This Service Manual provides you with limited service information for the HFS 9009 Precision Pulse Generator.

Use the Specifications section as a reference for all nominal, typical, and specified characteristics.

Use the Operating Information section to learn about each of the front panel controls and how to input simple settings for basic operation.

Use the Theory of Operation section to help you understand the operation of each of the replaceable modules in the HFS 9009.

Use the Performance Verification section to verify the specified performance of the instrument.

The Adjustment Procedures section lists the adjustment that can be made to the instrument.

Use the Maintenance section to learn how to perform general preventive maintenance of the instrument. Removal and replacement and troubleshooting procedures are also described in this section.

Notation Conventions

The Options section lists the options available from the factory. This section also describes the procedure for installing field updates to the internal programmed code of the instrument.

The Diagrams section describes and illustrates the major electrical sections of the HFS 9009.

The Mechanical Parts List section lists all of the replaceable parts and describes how to order these parts.

The following conventions are used in this manual:

H Signal names are printed in bold capital letters; for example, SENSE IN. H A signal active in the low state is shown with a tilde (~) in front of the signal

name; for example, ~ACFAIL. H Labels of front panel buttons and connectors are shown in bold capital

letters; for example, ENTER. H Labels of menu items are shown in mixed case bold text; for example, the

Pulse menu Amplitude item.

HFS 9009 Service Manual

xiii

Preface

Related Manuals

Refer to the HFS 9000 User Manual (070-8365-01) for additional operating information.

xiv

HFS 9009 Service Manual

Specifications

Nominal Traits

The HFS 9000 family of high-speed logic signal source instruments have a modular architecture with factory-configurable cards. The channels are digitally synthesized from a common clock resulting in highly accurate independent placement of rising and falling edges. The instruments are optimized for digital device characterization with unique triggering capabilities and a variety of pulse outputs. The product family also features low RMS jitter, the ability to compensate for external cable skews, and an easy-to-use graphical human interface.

This section contains the complete specifications for the HFS 9000 Stimulus System and Modules. These specifications are classified as either nominal traits, warranted characteristics, or typical characteristics.

Nominal traits are described using simple statements of fact such as “+2.6 V” for the trait “Maximum high level,” rather than in terms of limits that are performance requirements.

T able 1–1: Nominal Traits — HFS 9PG1 Output Performance

Each channel and complement driving a 50  load to ground, except as noted.

Name

Maximum high level +2.6 V Minimum low level –2.00 V Maximum amplitude 3.00 V Minimum amplitude 0.50 V Level resolution 0.01 V Operation when terminated

through 50  to –2 V

Description

Output levels will be approximately 1 V more negative than the values programmed, specified, and displayed. Actual output levels more negative than –2 V may cause malfunction. Level accuracy specifications do not apply when terminating to –2 V. Both true and complement outputs must be terminated to the same voltage.

HFS 9009 Service Manual

1–1

Specifications

T able 1–1: Nominal Traits — HFS 9PG1 Output Performance (Cont.)

Each channel and complement driving a 50  load to ground, except as noted.

Name Description

Operation when terminated to high impedance loads

Output limits One high limit and one low limit may be enabled or disabled

Output level range will double until certain internal limits are achieved. Since the programmed, specified, and displayed output levels do not match the actual output levels, level accuracy specifications do not apply when terminating to a high impedance load. Because of the larger voltage swings associated with doubled level range, output transition time specifications do not apply when driving a high impedance load.

together.

T able 1–2: Nominal Traits — HFS 9PG2 Output Performance

Each channel and complement driving a 50  load to ground, except as noted.

Name

Maximum high level +5.50 V Minimum low level –2.00 V Maximum amplitude 5.50 V Minimum amplitude 0.50 V Level resolution 0.01 V Operation when terminated

through 50  to –2 V

Transition time 20% to 80% V ariable from 800 ps to 5 ns Transition time resolution 10 ps Output limits One high limit and one low limit may be enabled or disabled

Description

together.

1–2

HFS 9009 Service Manual

T able 1–3: Nominal Traits — HFS 9DG1 Output Performance

Each channel and complement driving a 50  load to ground, except as noted.

Specifications

Name

Maximum high level +5.0V Minimum low level –2.5 V Maximum amplitude 3.00 V Minimum amplitude 0.01 V Level resolution 0.01V Operation when terminated

through 50  to –2 V

Operation when terminated to high impedance loads

Output limits One high limit and one low limit may be enabled or

Description

disabled together.

HFS 9009 Service Manual

T able 1–4: Nominal Traits — HFS 9DG2 Output Performance

Each channel and complement driving a 50  load to ground, except as noted.

Name

Maximum high level +5.50 V Minimum low level –2.00 V Maximum amplitude 5.50 V Minimum amplitude 0.01 V Level resolution 0.01 V Operation when terminated

through 50  to –2 V

Transition time 20% to 80% V ariable from 800 ps to 6 ns

Description

1–3

Specifications

T able 1–4: Nominal Traits — HFS 9DG2 Output Performance (Cont.)

Each channel and complement driving a 50 W load to ground, except as noted.

Name Description

Transition time resolution 10 ps Output limits One high limit and one low limit may be enabled or disabled

together.

T able 1–5: Nominal Traits — Time Base

Name Description

Frequency range HFS 9PG1, HFS 9DG1: 50 kHz to 630 MHz

HFS 9PG2, HFS 9DG2: 50 kHz to 300 MHz

Frequency resolution ≤ 0.1% of frequency setting

Minimum frequency setting when using half, quarter, or eighth pulse rate modes

Number of pulse periods in burst

half pulse rate: 100 kHz quarter pulse rate: 200 kHz eighth pulse rate: 400 kHz

User selectable from 1 to 65,536

or auto-burst modes

If the HFS 9PG2 or HFS 9DG2 is operated in half pulse rate mode, frequency can be extended to 600 MHz for the HFS 9PG2 and 630 MHz for the HFS 9DG2.

All pulse rate modes result in 50 kHz output frequency.

T able 1–6: Nominal Traits — Performance to External Frequency Reference

Name Description PHASE LOCK IN input charac-

teristic Phase lock output frequency

range

FRAME SYNC IN Initiates a burst when using phase lock mode FRAME SYNC IN input charac-

teristic

0.1 mF DC blocking capacitor followed by 50W termination to ground

Any 2n multiple or sub-multiple of the phase lock frequency that is within the allowed frequency range for the card being used

50 W terminated to –2V

1–4

HFS 9009 Service Manual

T able 1–7: Nominal Traits — Output Edge Placement Performance1

Name Description

Channel deskew (Chan Delay) range, channels relative to time zero reference

Channel deskew (Chan Delay) resolution

–60 ns to 2.0ms

HFS 9PG1, HFS 9PG2: 5 ps HFS 9DG1, HFS 9DG2: 1 ps

Specifications

Delay (Lead Delay) adjustment range

Delay (Lead Delay, Trail Delay) adjustment resolution

Pulse width adjustment range HFS 9PG1, HFS 9PG2: Zero to (one period – 790 ps)

Pulse width adjustment resolution

Fine knob resolution of timing 5 ps

Measured at 50% levels, each channel independent.

Zero to 20 ms

HFS 9PG1, HFS 9PG2: 5 ps HFS 9DG1, HFS 9DG2: 1 ps

inclusive HFS 9DG1, HFS 9DG2: Zero to (one period × 65,536) inclusive

HFS 9PG1, HFS 9PG2: 5 ps HFS 9DG1, HFS 9DG2: 1 ps

T able 1–8: Nominal Traits — Transducer In Performance

Name Description TRANSDUCER IN input charac-

teristic

HFS 9PG1: 1000 pF DC blocking capacitor followed by 50 W termination to ground HFS 9PG2: 100 pF DC blocking capacitor followed by 50 W termination to ground

HFS 9009 Service Manual

T able 1–9: Nominal Traits — Skew Cal In Performance

Name Description SKEW CAL IN usage Calibration use only . No signal, except from a channel

OUTPUT connector during the calibration process, should

ever be applied to this input.

1–5

Specifications

T able 1–10: Nominal Traits — Trigger In Performance

Name Description

Input Voltage range ±5 V maximum Trigger level range ±4.70 V Trigger level resolution 100 mV

T able 1–11: Nominal Traits — Trigger Out Performance

Name Description

Pretrigger range, TRIGGER OUT before time zero reference

TRIGGER OUT pulse width in auto mode

Zero to 70 ns

Width

(ns)

0.1

0.01 0.1 1 10 100 1000 Output Frequency (MHz)

T able 1–12: Nominal Traits — Power Requirements

Name HFS 9003 Description HFS 9009 Description

Fuse ratings 5 A, 250V, type 3AG,

(Tektronix part 159-0014-00), and

15 A, 250 V, type 3AG, fast blow, (Tektronix part

159-0256-00) 4 A, 250 V, type 3AG, fast blow, (Tektronix part 159-0017-00)

T able 1–13: Nominal Traits — System Memory Performance

Name Description

Non-volatile memory retention time

Instrument settings and calibration constants are retained in non-volatile memory for 5 years or more. Card identification is retained for 10 years. Extended storage above 50_ C may degrade the life of all non-volatile memory .

1–6

HFS 9009 Service Manual

Specifications

T able 1–14: Nominal Traits — HFS 9003 Mechanical

Name Description

Weight, in 12-channel configuration. (Shipping weight includes all standard accessories.)

Overall Dimensions Cabinet Rackmount

Cooling Method Forced-air circulation with no air filter, maximum 318 cfm Construction Material Chassis parts are constructed of aluminum alloy; bezel is

Net weight: 45 lbs. (20.5 kg) 51 lbs. (23.2 kg) Shipping weight: 60 lbs. (27.3 kg) 66 lbs. (30.0 kg)

Width: 16.3 in. (414 mm) 19.0 in (483 mm) Height: 7.0 in. (178 mm) 7.0 in. (178 mm) Depth: 24.75 in. (629 mm) 24.75 in. (629 mm) Depth behind rack flange: — 22.0 in. (559 mm)

glass-filled polycarbonate with Lexan plastic inserts; cabinet is aluminum with textured epoxy paint.

Cabinet Rackmount

T able 1–15: Nominal Traits — HFS 9009 Mechanical

Name Description

Weight, in 36-channel configuration. (Shipping weight includes all standard accessories.)

Overall Dimensions Rackmount

Cooling Method, mainframe Forced-air circulation with air filter, maximum 318 cfm Cooling Method, power supply Forced-air circulation, maximum 106 cfm Construction Material Chassis parts are constructed of aluminum alloy with Lexan

Net weight: 81 lbs. (33.7 kg) Shipping weight: 100 lbs. (45.3 kg)

Width: 16.75 in (425.79 mm) Height: 14.00 in. (355.89 mm) Depth: 24.00 in. (610.11 mm)

plastic inserts; cabinet is aluminum with textured epoxy paint.

Rackmount

HFS 9009 Service Manual

1–7

Specifications

Warranted Characteristics

Warranted characteristics are described in terms of quantifiable performance limits which are warranted. Names of characteristics that appear in boldface type have checks for verifying the specifications in the Check Procedures section.

T able 1–16: Warranted Characteristics — HFS 9PG1 Output Performance

Name Description High level accuracy (amplitude

≥ 1 V or high level ≥ 0 V)

±2% of level, ±50 mV

Low level accuracy (amplitude ≥ 1 V or high level ≥ 0 V)

Transition time 20% to 80% (amplitude ≤ 1V)

If amplitude < 1 V and high level < 0 V, accuracy typically meets the specification but is not guaranteed

±2% of high level, ±2% of amplitude, ±50 mV

≤ 200ps

T able 1–17: Warranted Characteristics — HFS 9PG2 Output Performance

Name Description High level accuracy ±2% of level, ±50 mV

Low level accuracy ±2% of high level, ±2% of amplitude, ±50 mV Transition time accuracy 20%

to 80% (amplitude ≤ 1V)

±10% of setting, ±300 ps

T able 1–18: Warranted Characteristics — HFS 9DG1 Output Performance

Name Description High level accuracy (amplitude

≥ 0.5 V)

±2% of level, ±50 mV

1–8

Low level accuracy (amplitude

≥ 0.5 V) Transition time 20% to 80%

(amplitude ≤ 1V)

If amplitude < 0.5 V , accuracy typically meets the specification but is not guaranteed

±2% of high level, ±2% of amplitude, ±50 mV

≤ 250ps

HFS 9009 Service Manual

Specifications

T able 1–19: Warranted Characteristics — HFS 9DG2 Output Performance

Name Description High level accuracy (amplitude

≥ 0.5 V)

±2% of level, ±50 mV

Low level accuracy (amplitude

≥ 0.5 V) Transition time accuracy 20%

±2% of high level, ±2% of amplitude, ±50 mV

±10% of setting, ±300 ps

to 80% (amplitude ≤ 1V)

If amplitude < 0.5 V , accuracy typically meets the specification but is not guaranteed.

T able 1–20: Warranted Characteristics — Time Base

Name Description Frequency accuracy ±1%

T able 1–21: Warranted Characteristic — Performance to External Frequency Reference

Name Description PHASE LOCK IN frequency

range

6 MHz to 630 MHz

HFS 9009 Service Manual

T able 1–22: Warranted Characteristics — Output Edge Placement Performance

Name Description Delay of pulses relative to time

zero reference (Lead Delay) accuracy

Pulse width accuracy HFS 9PG1: 1% of width ±300 ps

Measured at 50% levels, each channel independent.

HFS 9PG1, HFS 9PG2: 1% of (Lead Delay + Chan Delay)

±300 ps HFS 9DG1, HFS 9DG2: 1% of (Lead Delay + Chan Delay) ±50 ps

HFS 9PG2: 1% of width ±300 ps [for widths  20 ns]; 1% of width300 ps, –500 ps [for widths  20 ns] HFS 9DG1: 1% of width 50 –75 ps HFS 9DG2: 1% of width50 ps, –250 ps [for widths

 20 ns]; 1% of width50 ps, –450 ps [for widths  20 ns]

1–9

Specifications

T able 1–23: Warranted Characteristics — Trigger Out Performance

Name Description TRIGGER OUT signal levels Amplitude ≥ 300 mV (–0.5 V ≥ offset ≥ –1.5 V, driving 50 

to ground)

T able 1–24: Warranted Characteristics — Power Requirements

Name Description

Primary circuit dielectric breakdown voltage

Primary Grounding 0.1  maximum from chassis ground and protective earth

1500 VAC

ground

, 60 Hz for 10 seconds without breakdown

RMS

T able 1–25: Warranted Characteristics — Environmental and Safety

Name HFS 9003 Description HFS 9009 Description

Temperature Operating: 0_ C to +50_ C

(32_ F to 122_ F) Non-operating (storage): –40_ C to +75_ C (–40_ F to 167_ F)

Altitude Operating: 4 hours at 3,048 m (10,000 feet). Derate

maximum operating temperature by –1_ C (–1.8_ F) for each 304.8 m (1,000 feet) above 1,524 m (5,000 feet) Non-operating: 2 hours at 12,192 m (40,000 feet)

Humidity Operating: 95% RH, non-condensing, from 0_ C to

30_ C (32_ F to 86_ F) 75% RH, non-condensing, from 31_ C to 40_ C (88_ F to 104_ F)

(MIL-T-28800E, para 4.5.5.1.2.2, Type III, Class 5) Shock (non-operating) MIL-T-28800E, para 4.5.5.4.1, Type III, Class 5 Resistance to mishandling during

bench use (operating) Resistance to packaged trans-

portation vibration, sinusoidal, in shipping package

Resistance to packaged transportation vibration, sinusoidal, in shipping package

Resistance to packaged transportation random vibration

MIL-T-28800E, para 4.5.5.4.3, Type III, Class 5

Drops of 36 inches on all edges, faces, and corners

National Safe Transit Association, test procedure 1A-B-2

Packaged sinusoidal vibration

National Safe Transit Association, test procedure 1A-B-1

MIL-STD-810D, method 514.3, category I, Figure 514.3-1

Operating: 0_ C to +40_ C (32_ F to 104_ F) Non-operating (storage): –40_ C to +75_ C (–40_ F to 167_ F)

1–10

HFS 9009 Service Manual

Typical Characteristics

Specifications

T able 1–25: Warranted Characteristics — Environmental and Safety (Cont.)

Name HFS 9009 DescriptionHFS 9003 Description

Safety Listed to UL1244

Certified to CAN/CSA-C22.2 No. 231–M89

IEC Specifications Installation Category II

Pollution Degree 2 Safety Class I

Typical characteristics are described in terms of typical or average performance. Typical characteristics are not warranted.

T able 1–26: Typical Characteristics — Time Base

Name Description

RMS jitter 15 ps, ±0.05% of interval Recovery time between bursts or

auto-bursts

15 ms

T able 1–27: Typical Characteristics — HFS 9PG1 Output Performance

Name Description

Transition time 20% to 80% Amplitude ≤ 1V: 150 ps

1 V < Amplitude ≤ 2 V: 190ps 2 V < Amplitude ≤ 3 V: 225ps

Output aberrations (beginning 200 ps after 50% point of transition)

Overshoot: +15%, +20 mV Undershoot: –10%, –20 mV

HFS 9009 Service Manual

1–11

Specifications

T able 1–28: Typical Characteristics — HFS 9PG2 Output Performance

Name Description

Operation when terminated to high impedance loads

Output level range will double until certain internal limits are

achieved. Since the programmed, specified, and displayed

output levels do not match the actual output levels, level

accuracy specifications do not apply when terminating to a

high impedance load. Because of the larger voltage swings

associated with doubled level range, output transition time

specifications do not apply when driving a high impedance

load. Transition time accuracy 20% to

80% Output aberrations Overshoot: +15%, +20 mV

±10% of setting, ±300 ps

Undershoot: –10%, –20 mV

T able 1–29: Typical Characteristics — HFS 9DG1 Output Performance

Name Description

Transition time 20% to 80% Amplitude ≤ 1V: ≤ 250 ps, 250 ps

1 V < Amplitude < 2 V: 250ps

2V ≤ Amplitude ≤ 3V: 260 ps Output aberrations Overshoot: +15%, +20 mV

Undershoot: –10%, –20 mV

T able 1–30: Typical Characteristics — HFS 9DG2 Output Performance

Name Description

Operation when terminated to high impedance loads

Output level range will double until certain internal limits are

achieved. Since the programmed, specified, and displayed

output levels do not match the actual output levels, level

accuracy specifications do not apply when terminating to a

high impedance load. Because of the larger voltage swings

associated with doubled level range, output transition time

specifications do not apply when driving a high impedance

load.

1–12

Transition time accuracy 20% to 80%

Output aberrations Overshoot: +15%, +20 mV

±10% of setting, ±300 ps

Undershoot: –10%, –20 mV

HFS 9009 Service Manual

Specifications

T able 1–31: Typical Characteristics — Performance to External Frequency Reference

Name Description PHASE LOCK IN amplitude

range

0.8 V to 1.0 V peak-to-peak

PHASE LOCK IN transition time requirement

FRAME SYNC IN signal level –1.810V ≤ V

Setup time, rising edge of FRAME SYNC IN signal to rising edge of PHASE LOCK IN

Hold time, high level of FRAME

SYNC IN after rising edge of PHASE LOCK IN

Time from frame sync qualified phase lock clock cycle to timezero reference

20% to 80% in ≤ 10 ns

≤ –1.475 V –1.165 V ≤ V (standard 100 K ECL levels)

650 ps minimum

70 ns minimum, 130 ns

low

≤ –0.810 V

high

T able 1–32: Typical Characteristics — Transducer In Performance

Name Description TRANSDUCER IN useful fre-

quency range TRANSDUCER IN amplitude

requirement

HFS 9PG1: 25 MHz to > 1GHz HFS 9PG2: 5 MHz to 300 MHz

1.0 V to 1.5 V peak-to-peak

HFS 9009 Service Manual

T able 1–33: Typical Characteristics — Trigger In Performance

Name Description

Input resistance 50  Trigger level accuracy ±100 mV ±5% of trigger level Trigger input rise/fall time re-

quirement Minimum trigger input pulse

width Trigger sensitivity ≤ 500mV Time from trigger in to time-zero

reference

≤ 10 ns

1ns

70 ns minimum, 130 ns typical

1–13

Specifications

T able 1–34: Typical Characteristics — Trigger Out Performance

Name Description

Pretrigger resolution 250 ps

T able 1–35: Typical Characteristics — Power Requirements

Name HFS 9003 Description HFS 9009 Description

Line Voltage 90VAC

or 180 V AC 250 VAC switched automatically

Line frequency 48 Hz to 63 Hz

to 130 VAC

RMS

, range

RMS

90 V AC

RMS

with maximum 7 cards installed, 104 V AC 132 VAC 9 cards installed, or 180 VAC 250 VAC switched automatically

to 104 VAC

RMS

with maximum

RMS

, range

RMS

Power consumption 540 W maximum 1190 W with maximum of 9

cards installed

Inrush surge current 50 A maximum up to 40 ms at 110 VAC

100 A maximum up to 40 ms at 220 VAC

1–14

HFS 9009 Service Manual

Operating Information

The HFS 9009 is built in a C-size VXI card-modular mainframe. It has a CPU card, a time base card, and up to nine pulse and data generator cards. A front panel module provides a keyboard and a flat-panel display (see Figure 2–1).

NOTE. Even though the HFS 9009 is built in a VXI mainframe, the instrument does not follow all VXI standards and therefore is not a true VXI instrument.

Menu Selections

CPU

Time Base

Figure 2–1: HFS 9009 Mainframe, Cards, and Front Panel

This section shows how to input simple settings for basic operation. For a more thorough explanation of how to set up the instrument, refer to the HFS 9000 Series User Manual.

The front panel MAIN MENU button, shown in Figure 2–2, displays the top-level menu. Each item in this menu leads to a second-level menu. You can move through all menus using the arrow keys surrounding the SELECT button. Each arrow button moves the selection to the next menu item in the direction indicated. When the desired menu item is highlighted, press the SELECT button to activate that selection.

Generator Cards

HFS 9009 Service Manual

2–1

Operating Information

Resetting the HFS 9009

MAIN MENU ButtonSELECT and

Arrow Buttons

Figure 2–2: MAIN MENU, SELECT, and Arrow Button Locations

To reset all user-selected parameters to known default settings:

1. Press the MAIN MENU button (see Figure 2–2).

2. Use the arrow buttons to highlight the Save/Recall Menu item in the main menu (see Figures 2–2 and 2–3). Press the SELECT button.

Figure 2–3: Main Menu Display

3. Highlight the Reset item and press SELECT again.

4. Verify the reset selection by highlighting Yes in the subsequent dialog box,

then press SELECT. (To select options in the dialog box, use the up and down arrow keys, or turn the knob.)

Setting the Time Base

2–2

All pulse and data generator channels are governed by a single time base. Follow these steps to set up the time base to self-trigger repeatedly and to specify the number of pulses to be output from the pulse or data generators.

HFS 9009 Service Manual

Operating Information

1. Press the MAIN MENU button.

2. Highlight the Time Base Menu item in the main menu. Press the SELECT

button. The time base normally waits for a trigger event, then specifies the number

of pulses (Count) to be generated (see Figure 2–4). After that, the time base pauses for a rearm time, then waits for the next trigger event. The display screen above the Time Base menu graphically depicts this sequence.

Figure 2–4: The Time Base Menu

3. Use the arrow keys to highlight the Mode item. Press the SELECT button twice to select Auto-Burst in the menu item (see Figure 2–5).

Figure 2–5: Mode set to Auto-Burst

The Period and Count settings control the generated pulses. When either of these items are highlighted, the waveform display above the menu is updated to illustrate the parameter being adjusted.

4. Select the Period item. Use the knob to adjust the period. To get finer resolution, press the FINE button. The FINE light illuminates to indicate that fine mode is selected.

You may also enter numeric values with the keypad. Type in the number and, if necessary, press a key to specify units. Then finish by pressing the ENTER key.

HFS 9009 Service Manual

5. Select the Count item. Set a value using the knob or type a value using the keypad. Press ENTER to terminate keypad entry.

2–3

Operating Information

The UNDO Button

Pulse Output

The Period item can also be used to specify Frequency. When Period is highlighted, the SELECT button alternates between Period and Frequency. Use the knob or keypad to set values.

6. Highlight the Period item and press the SELECT button. Observe that the

period setting changes to a reciprocal frequency setting.

The HFS 9009 is now set up to enable the output of pulses. Since the HFS 9009 is in auto-burst mode, no trigger input is required to generate pulses.

Whenever a setting is changed, the HFS 9009 remembers the old setting as well. Pressing the UNDO button at the right of the display panel restores the last setting. Pressing it twice undoes the undo.

The following procedure demonstrates how to turn the pulse generator channels on. Any channel can be turned on from the Pulse menu Output item, but it is more convenient to turn on a channel from the front panel. Depending on the configuration of the HFS 9009, up to nine pulse and data generator cards can be installed, each with at least two channels. The controls for each type of card are shown in Figure 2–6. (Figure 2–1 shows the placement of the generator cards in the mainframe.)

1. Select a channel to use for the output by pressing the OUTPUT button for

that channel. Observe that the associated light illuminates. If you want to use

OUTPUT

separately. The HFS 9009 is now creating pulse bursts. It generates the number of

pulses entered for the count value at the frequency entered for the corresponding period value (or frequency value). When the pulse train is completed, it automatically starts over again after the rearm time.

2. Connect a cable to the output to access the generated pulses.

3. To select normal burst mode operation, highlight the Mode item of the Time

Base menu. Use the SELECT button to select Burst mode. If burst is selected, the output is no longer triggered unless a suitable trigger signal is applied to the time base card TRIGGER IN connector. Press the MANUAL TRIGGER button at the right of the display panel to initiate a single burst from the HFS 9009.

for any generator channel, you must turn on the OUTPUT

2–4

HFS 9009 Service Manual

Operating Information

SMA Connector OUTPUT ButtonLight

HFS 9DG1 HFS 9DG2HFS 9PG2TIME BASE

HFS 9009 Service Manual

Figure 2–6: Controls and Connectors for the Pulse Generator, Data Generator, and Time Base Cards

2–5

Operating Information

2–6

HFS 9009 Service Manual

Module Descriptions

This section describes the operation of each of the replaceable modules in the HFS 9009 Precision Pulse Generator. Refer to the Diagrams section of this manual for a block diagram of the HFS 9009.

Mainframe

The mainframe consists of a backplane, a power supply, and four fans.

Power Supply

Front Panel

Backplane

Fans

The backplane complies with the VXIbus System Specification Rev. 1.2, dated June 21, 1989. The backplane is VXI standard C size and has 13 slots; a maximum of 11 slots may be used for the HFS 9000 configuration. The backplane is not a replaceable part.

The HFS 9009 power supply is a single modular assembly located at the back of the mainframe. The power supply is a replaceable part.

Four fans provide cooling for the power supply modules and the VXI modules installed in the card cage. Each fan can be replaced. All fans draw their power from the +12 V fan control of the power supply and draw a total of approximately 3 Amps.

The factory setting for the fan is variable speed. If the HFS 9009 is in a rackmount with reduced airflow, set the fan speed to high.

The front panel contains several modules. One module consists of the numeric keypad and encoder. This module is used to interact with the menus that appear on the electro-luminescent display. A second module contains a scan pushbutton matrix and LEDs, and mechanically supports the electro-luminescent display. The third module is the electro-luminescent display itself.

Cards

HFS 9009 Service Manual

Six types of cards plug into the mainframe: the CPU card, time base card, high speed pulse generator card (HFS 9PG1), variable rate pulse generator card (HFS 9PG2), high speed data generator card (HFS 9DG1), and variable rate data

3–1

Module Descriptions

generator card (HFS 9DG2). Each HFS 9009 has one CPU card, one time base card, and up to nine generator cards.

CPU Card

Time Base Card

Pulse Generator Cards

The CPU receives commands for pulse output parameters from the front panel, the GPIB, or RS-232 interfaces. The CPU creates a series of time base and generator card commands which are then transmitted via the VXI Bus to set up the generator outputs.

The CPU card contains all product code in read-only memory (ROM). The CPU card also has volatile and nonvolatile random-access memory (RAM), as well as video display and bus timing circuitry.

The time base contains a voltage-controlled oscillator (VCO) which is tunable from 325 MHz to 650 MHz. The time base also contains the trigger in, trigger out, and phase lock circuits.

The VCO output is connected to the generator cards through clock distribution cables. Clock distribution cables are located at the front of the cards. The time base card provides several connections for clock distribution cables, one of which is connected to each pulse and data generator card. The clock distribution cables provide a high-speed signal path for the clock because the VXI backplane cannot carry signals of sufficiently high frequency.

Each pulse generator card provides two independent output channels. Each channel provides standard and logically-complemented outputs.

The pulse generator card channels divide the master clock signal into the requested frequency, and format the output signals. The pulse generator card controls the channel output levels, the channel delay, and the channel rising and falling edge time.

The pulse generator card transducer input can be used to bypass the VCO and timing generation circuits in the HFS 9009. When transducer in is enabled, a sine wave can be applied to the transducer input. You can use the channel output levels and rise and fall times to reshape the input signal.

High Speed Pulse Generator Cards (HFS 9PG1) run at a top speed of 630 MHz and have a fixed rise and fall time of 200 ps.

Variable Rate Pulse Generator Cards (HFS 9PG2) run at a top speed of 300 MHz. The rise time and fall times can be independently programmed from less than one nanosecond to five nanoseconds, which allows the user to adjust the speed of the pulse edges.

3–2

HFS 9009 Service Manual

Module Descriptions

Data Time Generator

Cards

Each data time generator card provides four independent output channels. The high speed data time generator card provides standard and logically-complemented outputs. The variable rate data time generator card provides only a single output for each channel. The data time generator card channels work in the same way as the pulse generator card channels. The master clock signal is divided into the requested frequency and format output signals by controlling the output levels, channel delay, and rising and falling edge time.

High Speed Data Time Generator Cards (HFS 9DG1) run at a top speed of 630 MHz and have a fixed rise and fall time of 200 ps.

Variable Rate Data Time Generator Cards (HFS9DG2) run at a top speed of 300 MHz. The rise and fall times can be independently programmed from less than one nanosecond to five nanoseconds, which allows the user to adjust the speed of the pulse edges.

HFS 9009 Service Manual

3–3

Module Descriptions

3–4

HFS 9009 Service Manual

Performance Verification

The following tests verify that the HFS 9000 Stimulus System achieves its specified performance.

Required Test Equipment

Refer to Table 4–1 for a list of the test equipment required to verify performance.

T able 4–1: Required Test Equipment

Item Number and Description

Minimum Requirements Example Purpose

1 Digital Volt Meter DC volt accuracy:

± 0.1% from 0.40 V to 5.5 V

2 BNC female to dual

banana plug

3 Cable, Precision

Coaxial, BNC

4 Precision Feed-

through Terminator

5 Digital Sampling

Oscilloscope

6 Sampling Head Rise time: ≤ 60 ps (10% to 90%) Tektronix SD-22, SD-24, or SD-26 Used with Tektronix Digital Sam-

7 Attenuator, 5X,

SMA

8 Cable, Coaxial,

SMA (two required)

9 Generator, Leveled

Sine Wave

— Tektronix part number

36-inch, 50 W Tektronix part number

50 W, 0.1% at DC Tektronix part number

D time accuracy: ± (0.25% + 10 ps) from 100 ps to 1 ms

Freq. Measurement accuracy: ± 0.10% from 50 kHz to 630 MHz

50 W, ≥ 12 GHz bandwidth Tektronix part number

20-inch, 50 W Tektronix part number

Capable of producing 0.8 V amplitude up to 600 MHz into 50 W

p-p

Tektronix DM 511 Output level and amplitude checks

Output level and amplitude checks

103-0090-00

Output level and amplitude checks

012-0482-00

Output level and amplitude checks

01 1-0129-00 Tektronix 11801B Digital Sampling

Oscilloscope or CSA803A Communication Signal Analyzer

015-1002-00

174-1427-00

Tektronix SG 504 Phase lock check

Trigger Output Check, Rise and fall time checks, Edge placement checks, Frequency accuracy check

pling Oscilloscope (item 5) Rise and fall time checks

Trigger Output Check, Rise and fall time checks, Edge placement check, Frequency accuracy check

HFS 9009 Service Manual

4–1

Performance Verification

T able 4–1: Required Test Equipment (Cont.)

Item Number and Description

PurposeExampleMinimum Requirements

10 BNC female to

SMA male adapter

11 Threaded SMA

female to SMA male slip-on connector

Test Record

— Tektronix part number

015-1018-00

— Tektronix part number

015-0553-00

Identify the type of cards you will be testing and photocopy the appropriate tables from pages 4–3 to 4–9. Use these tables to record the performance test results for the instrument.

Output level and amplitude checks, Phase lock check

SMA quick disconnect

4–2

HFS 9009 Service Manual

Performance Verification

OutputMa

High Level

T able 4–2: Trigger Output Level and Phase Lock Test

Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test Minimum Incoming Outgoing Maximum Trigger Output Level Amplitude ≥ 300 mV (–0.5 V ≥ offset ≥ –1.5 V, driving 50  to ground)

ximum

N/A __________ __________ ≤ –0.5 V Minimum Low Level Minimum Amplitude

Phase Lock Test 1% (frequency set accuracy of generator) Output 0.8 V, 250 MHz

Channel 0.8 V, 594 MHz

250 MHz 594 MHz

≥ –1.5 V

≥ 300 mV

247.5

588.1

__________ __________ N/A __________ __________ N/A

p–p

__________ __________

252.5

599.9

HFS 9009 Service Manual

4–3

Performance Verification

T able 4–3: Test Record for HFS 9DG1 Card

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test Nominal Minimum Incoming Outgoing Maximum Output High Level: ± 2% of level, ± 50 mV Low Level: ± 2% of High Level, ± 2% of amplitude (p-p), ± 50 mV

Output Complement Channel Normal

Normal Complement

Not Output Normal Channel Complement

Complement

Normal Rise Time / Fall Time ≤ 250ps for Amplitude ≤ 1V Output Normal, 1V, Tr

Channel Complement, 1 V, Tf Not Output Normal, 1V, Tf

Channel Complement, 1 V, Tr Edge Placement Pulse Delay Time 1% of (Lead Delay + Chan Delay) ±50 ps Output Normal

Channel

Not Output Normal Channel

Edge Placement Pulse Width Variance 1% of width ± 50ps Output Normal

Channel

Not Output Normal Channel

+5.0 V +2.0 V –2.5 V –1.5 V

250 ps 250 ps

100 ps 500 ps

1 ns

5 ns 10 ns 50 ns

100 ns 100 ps

500 ps

1 ns

5 ns 10 ns 50 ns

100 ns

500 ps 750 ps

1 ns

500 ps 750 ps

1 ns

+4.850

1.790 –2.680 –1.580

+4.850

1.790 –2.680 –1.580

N/A N/A

445

0.940

4.900

9.850

49.45

98.95 49

445

0.940

4.900

9.850

49.45

98.95

445 693

0.940

445 693

0.940

__________ __________ __________ __________

__________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________

__________ __________ __________ __________

__________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________

+5.150 +2.210 –2.320 –1.420

250 ps 250 ps

151 555

1.060

5.100

10.150

50.55

101.05 151

555

1.060

5.100

10.150

50.55

101.05

555 808

1.060

555 808

1.060

4–4

HFS 9009 Service Manual

T able 4–3: Test Record for HFS 9DG1 Card (Cont.)

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimumNominal Pulse Width Limits 1% of width +50 –75ps

Output Normal Channel

Not Output Normal Channel

Frequency Accuracy ± 1% Output

Channel

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

50 kHz 324 MHz 326 MHz 400 MHz 433 MHz 466 MHz 500 MHz 533 MHz 566 MHz 600 MHz 630 MHz

4.875

9.825

49.425

98.925

494.925

0.990

4.875

9.825

49.425

98.925

494.925

0.990

49.50

320.8

322.7

396.0

428.7

461.3

495.0

527.7

560.3

594.0

623.7

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________

Performance Verification

5.100

10.150

50.55

101.05

505.05

1.010

5.100

10.150

50.55

101.05

505.05

1.010

50.50

327.2

329.3

404.0

437.3

470.7

505.0

538.3

571.7

606.0

636.3

HFS 9009 Service Manual

4–5

Performance Verification

T able 4–4: Test Record for HFS 9DG2 Card

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test Nominal Minimum Incoming Outgoing Maximum Output High Level: ± 2% of level, ± 50 mV Low Level: ± 2% of High Level, ± 2% of amplitude (p-p), ± 50 mV

Output Complement Channel Normal

Normal

Complement Rise Time / Fall Time ± 10% of setting ± 300 ps for Amplitude ≤ 1V Output Normal, 1V, Tr

Channel Complement, 1 V, Tf

Normal, 1 V , Tr

Complement, 1 V , Tf Edge Placement Pulse Delay Time 1% of (Lead Delay + Chan Delay) ±50 ps Output Normal

Channel

Edge Placement Pulse Width Limits (1% + 50 ps, –450 ps) for widths  20 ns (1% + 50 ps, –250 ps) for widths  20 ns Output

Channel

Frequency Accuracy ± 1% Output

Channel

+5.5 V

0.0 V –2.0 V –1.0 V

0.8 ns

0.8 ns 5 ns 5 ns

100 ps 500 ps

1 ns 5 ns

10 ns 50 ns

100 ns

5 ns

10 ns

50 ns 100 ns 500 ns

1 s

50 kHz 162 MHz 163 MHz 200 MHz

216.5 MHz 233 MHz 250 MHz

266.5 MHz 283 MHz 300 MHz

+5.340 –0.270 –2.090 –1.070

0.420

4.200

445

0.940

4.900

9.850

49.45

98.95

4.500

9.450

49.25

98.75

494.8

0.990

49.50

160.4

161.4

198.0

214.3

230.7

247.5

263.8

280.2

297.0

__________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________

+5.660 +0.270 –1.910 –0.930

1.180

5.800

151 555

1.060

5.100

10.150

50.55

101.05

5.100

10.150

50.55

101.05

505.1

1.010

50.50

163.6

164.6

202.0

218.7

235.3

252.5

269.2

285.8

303.0

4–6

HFS 9009 Service Manual

Performance Verification

T able 4–5: Test Record for HFS 9PG1 Card

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test Nominal Minimum Incoming Outgoing Maximum Output High Level: ± 2% of level, ± 50 mV Low Level: ± 2% of High Level, ± 2% of amplitude (p-p), ± 50 mV

Output Complement Channel Normal

Normal Complement

Not Output Normal Channel Complement

Complement

Normal Rise Time / Fall Time ≤ 200ps for Amplitude ≤ 1V Output Normal, 1V, Tr

Channel Complement, 1 V, Tf Not Output Normal, 1V, Tf

Channel Complement, 1 V, Tr Edge Placement Pulse Delay Time 1% of (Lead Delay + Chan Delay) ±300 ps Output Normal

Channel

Not Output Normal Channel

Edge Placement Pulse Width Variance 1% of width ± 300ps Output Normal

Channel

Not Output Normal Channel

+2.6 V –0.4 V

–2 V –1 V

+2.6 V –0.4 V

–2 V –1 V

200 ps 200 ps

100 ps 500 ps

1 ns

5 ns 10 ns 50 ns

100 ns 100 ps

500 ps

1 ns

5 ns 10 ns 50 ns

100 ns

500 ps 750 ps

1 ns

500 ps 750 ps

1 ns

+2.498 –0.562 –2.090 –1.070

N/A N/A

–201

195

0.690

4.650

9.600

49.20

98.70

–201

195

0.690

4.650

9.600

49.20

98.70

195 443

0.690

195 443

0.690

__________ __________ __________ __________

__________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________

__________ __________ __________ __________

__________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________

+2.702 –0.238 –1.910 –0.930

200 ps 200 ps

401 805

1.310

5.350

10.400

50.80

101.30 401

805

1.310

5.350

10.400

50.80

101.30

805 1060

1.310

805 1058

1.310

HFS 9009 Service Manual

4–7

Performance Verification

T able 4–5: Test Record for HFS 9PG1 Card (Cont.)

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimumNominal Pulse Width Limits 1% of width ± 300 ps

Output Normal Channel

Not Output Normal Channel

Frequency Accuracy ± 1% Output

Channel

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

50 kHz 324 MHz 326 MHz 400 MHz 433 MHz 466 MHz 500 MHz 533 MHz 566 MHz 600 MHz

630 MHz

4.650

9.600

49.20

98.70

494.70

0.990

4.650

9.600

49.20

98.70

494.70

0.990

49.50

320.8

322.7

396.0

428.7

461.3

495.0

527.7

560.3

594.0

623.7

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________ __________

5.350

10.400

50.80

101.30

505.30

1.010

5.350

10.400

50.80

101.30

505.30

1.010

50.50

327.2

329.3

404.0

437.3

470.7

505.0

538.3

571.7

606.0

636.3

4–8

HFS 9009 Service Manual

Performance Verification

T able 4–6: Test Record for HFS 9PG2 Card

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test Nominal Minimum Incoming Outgoing Maximum Output High Level: ± 2% of level, ± 50 mV Low Level: ± 2% of High Level, ± 2% of amplitude (p-p), ± 50 mV

Output Complement Channel Normal

Normal Complement

Not Output Normal Channel Complement

Complement

Normal Rise Time / Fall Time ± 10% of setting ± 300 ps for Amplitude ≤ 1V Output Normal, 1V, Tr

Channel Complement, 1 V, Tf

Normal, 1 V , Tr

Complement, 1 V , Tf Not Output Normal, 1V, Tf

Channel Complement, 1 V, Tr

Normal, 1 V , Tf

Complement, 1 V , T r Edge Placement Pulse Delay Time 1% of (Lead Delay + Chan Delay) ±300 ps Output Normal

Channel

Not Output Normal Channel

+5.5 V

0 V –2 V –1 V

+5.5 V

0 V –2 V –1 V

0.8 ns

0.8 ns 5 ns 5 ns

0.8 ns

0.8 ns 5 ns 5 ns

100 ps 500 ps

1 ns 5 ns

10 ns 50 ns

100 ns 100 ps

500 ps

1 ns 5 ns

10 ns 50 ns

100 ns

+5.340 –0.270 –2.090 –1.070

0.420

4.200

0.420

4.200

–201

195

0.690

4.650

9.600

49.20

98.70

–201

195

0.690

4.650

9.600

49.20

98.70

__________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________

+5.660 +0.270 –1.910 –0.930

1.180

5.800

1.180

5.800

401 805

1.310

5.350

10.400

50.80

101.30 401

805

1.310

5.350

10.400

50.80

101.30

HFS 9009 Service Manual

4–9

Performance Verification

T able 4–6: Test Record for HFS 9PG2 Card (Cont.)

Channel: Page of Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician:

Performance Test MaximumOutgoingIncomingMinimumNominal Edge Placement Pulse Width Limits (1% of width + 300 ps, –500 ps) for widths  20 ns

(1% of width, ± 300 ps) for widths  20 ns

Output Normal Channel

Not Output Normal Channel

Frequency Accuracy ± 1% Output Nominal = HFS Setting

Channel Output = Nominal/2

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

5 ns 10 ns 50 ns

100 ns 500 ns

1 ms

100 kHz 324 MHz 326 MHz 400 MHz 433 MHz 466 MHz 500 MHz 533 MHz 566 MHz 600 MHz

4.450

9.400

49.20

98.70

494.7

0.990

4.450

9.400

49.20

98.70

494.7

0.990

49.50

160.4

161.4

198.0

214.3

230.7

247.5

263.8

280.2

297.0

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________

__________ __________ __________ __________ __________ __________ __________ __________ __________ __________

5.350

10.400

50.80

101.30

505.3

1.010

5.350

10.400

50.80

101.30

505.3

1.010

50.50

163.6

164.6

202.0

218.7

235.3

252.5

269.2

285.8

303.0

4–10

HFS 9009 Service Manual

Verification Sequence

Performance Verification

The performance verification procedure consists of the following steps, performed in the following order:

1. Perform the HFS 9000 internal self test that follows this list of steps. If the

self test indicates problems, refer to the Maintenance section in the Service Manual to repair the instrument.

2. Perform the internal calibration on page 4–12 if the HFS 9000 has not been

recalibrated within the last six months, or if the HFS 9000 has been reconfigured with different cards or has been adjusted or repaired.

3. Follow the procedures in the Check Procedures section beginning on

page 4–13 to verify that the HFS 9000 performs to every specification.

Self Test

The HFS 9000 is equipped with self-test diagnostic routines that execute automatically when you switch the power on. You may also manually select the diagnostic routines.

Use the following procedure to manually select the diagnostic routines:

1. Press MAIN MENU and select Cal/Deskew Menu.

2. Select Self Test.

The HFS 9000 display indicates the circuits under test as it proceeds through the diagnostics. The HFS 9000 returns to normal operating mode after successfully completing the diagnostics.

If the HFS 9000 detects a failure, it suspends normal operation and displays an error code (see the Maintenance section in the Service Manual for further information). The display presents two choices:

H Press any button other than the SELECT button to show a terse description

of the failure. This additional information may assist you in isolating a failure to a module, or to determine if users can continue to operate the HFS 9000. The next diagnostic test will not begin until you press the SELECT button.

H Press the SELECT button to continue with the next diagnostic test.

HFS 9009 Service Manual

A self-test failure does not necessarily indicate that the HFS 9000 is inoperable. However, it does indicate that the instrument is out of specification and that it might not be fully operational.

4–11

Performance Verification

Calibration

The calibration procedure adjusts the instrument to its internal voltage and timing references and saves the settings in non-volatile memory.

Calibrate the HFS 9000 at least every six months. The instrument does not need more frequent calibration unless it is reconfigured or used in an ambient temperature that differs by more than 5_ C from the temperature it was last calibrated in.

NOTE. Run the calibration procedure only when the HFS 9000 has been powered on for 20 minutes in the temperature environment you expect it to be used in.

To calibrate the HFS 9000, select the Calibrate item in the Cal/Deskew menu. After you select the Calibrate item, verify this choice in the subsequent dialog

box. After verification, the HFS 9000 starts the Timebase calibration and prompts you to attach an SMA cable from the front panel SKEW CAL IN connector to the TRIGGER OUT connector. The HFS 9000 then prompts you to connect each channel OUTPUT connector in turn. The HFS 9000 performs the calibration automatically during the time that each channel is connected. The time for the calibration procedure varies by configuration.

A 20 inch, 50 W coaxial SMA cable (Tektronix part number 174-1427-00) is supplied with the HFS 9000 as a standard accessory. This cable is suitable for use during calibration.

4–12

HFS 9009 Service Manual

Check Procedures

Performance Verification

Once you have run the self-test procedure, and, if necessary, calibrated the HFS 9000, these check procedures will verify that the instrument performs as specified.

Instrument Setup

Select MAIN MENU and reset the HFS 9000 using the Reset item in the Save/Recall menu. After this reset, the parameters listed below are properly set for all tests and need not be modified again. However, each check specifies a reset as a first step to ensure the following settings:

H Cal/Deskew menu, Pretrigger item: 70 ns H Cal/Deskew menu, Channel Delay item: 0 s (all channels) H Time Base menu, Mode item: Auto H Levels menu, Limit item: Off H Pulse menu, Signal Type item: Pulse

NOTE. Allow the HFS 9000 to warm up for a minimum of 20 minutes. The instrument must warm up in an ambient temperature within 5_ C of the ambient temperature when last calibrated.

After you have set up the first channel for a particular check, use the Copy Channel and Paste Channel menu items to transfer the setup to the other

channels.

Output Level Checks

(HFS 9DG1 Card Only)

HFS 9009 Service Manual

These tests check the output level in volts DC of each data generator channel. You will need to repeat these checks for each output channel; the number of times you repeat a check depends on the configuration of your HFS 9000. A reference to “the channel” is a reference to the particular channel being checked.

Equipment Required

1. Reset the HFS 9000.

2. Set the Digital Voltmeter to measure DC volts on Auto Range.

One DVM (digital voltmeter, item 1) One BNC female to dual banana connector (item 2) One precision coaxial cable (item 3) One feedthrough termination (item 4) One threaded SMA female to SMA male slip-on connector (item 11).

4–13

Performance Verification

3. Construct the termination assembly by connecting the following items in the

order listed:

a. one BNC female to dual banana connector (item 2) b. one precision coaxial cable (item 3) c. one feedthrough termination (item 4) d. one BNC female to SMA male adapter (item 10) e. one threaded SMA female to SMA male slip-on connector (item 11).

4. Connect the banana plug end of the termination assembly to the input of the DVM and connect the other end to the channel normal OUTPUT connector.

5. Set the HFS 9000 according to Table 4–7.

T able 4–7: HFS 9DG1 Output Level Checks, First Settings

Control Setting

Pulse menu, Channel The channel under test Pulse menu, Output On Pulse menu, ~Output Off Pulse menu, Pulse Rate Off Pulse menu, Polarity Complement Pulse menu, High Level 5.0 V Pulse menu, Low Level 2.0 V

The output voltage reading on the DVM should be between 4.850 V and

5.150 V.

6. Change the Pulse menu Polarity item setting to Normal. The output voltage reading on the DVM should be between 1.790 V and

2.210 V.

7. Set the HFS 9000 according to Table 4–8.

T able 4–8: HFS 9DG1 Output Level Checks, Second Settings

4–14

Control Setting

Pulse menu, High Level –1.5 V Pulse menu, Low Level –2.5V

HFS 9009 Service Manual

Performance Verification

The output voltage reading on the DVM should be between –2.680 V and –2.320 V.

8. Change the Pulse menu Polarity item setting to Complement.

The output voltage reading on the DVM should be between –1.580 V and –1.420 V.

9. Move the feedthrough termination assembly to the channel complemented

OUTPUT

. The DVM is now set to monitor the complement output.

10. Set the HFS 9000 according to Table 4–9.

T able 4–9: HFS 9DG1 Output Level Checks, Third Settings

Control Setting

Pulse menu, Output Off Pulse menu, ~Output On Pulse menu, Polarity Normal Pulse menu, High Level 5.0 V Pulse menu, Low Level 2.0 V

The output voltage reading on the DVM should be between 4.850 V and

5.150 V.

11. Change the Pulse menu Polarity item setting to Complement.

The output voltage reading on the DVM should be between 1.790 V and

2.210 V.

12. Set the HFS 9000 according to Table 4–10.

T able 4–10: HFS 9DG1 Output Level Checks, Fourth Settings

Control Setting

Pulse menu, High Level –1.5 V Pulse menu, Low Level –2.5V

The output voltage reading on the DVM should be between –2.680 V and –2.320 V.

HFS 9009 Service Manual

13. Change the Pulse menu Polarity item setting to Normal.

The output voltage reading on the DVM should be between –1.580 V and –1.420 V.

4–15

Performance Verification

14. Repeat steps 1 through 13 for each of the HFS 9DG1 channels in the system.

15. Disconnect test setup.

Output Level Checks

(HFS 9DG2 and HFS 9PG2

Cards Only)

These tests check the output level in volts DC of each pulse or data generator channel. You will need to repeat these checks for each output channel; the number of times you repeat a check depends on the configuration of your HFS 9000. A reference to “the channel” is a reference to the particular channel being checked.

Equipment Required

1. Reset the HFS 9000.

2. Set the Digital Voltmeter to measure DC volts on Auto Range.

3. Construct the termination assembly by connecting the following items in the

order listed:

4. Connect the banana plug end of the termination assembly to the input of the DVM and connect the other end to the channel normal OUTPUT connector.

5. Set the HFS 9000 according to Table 4–11.

4–16

HFS 9009 Service Manual

Performance Verification

T able 4–11: HFS 9DG2 and HFS 9PG2 Output Level Checks, First Settings

Control Setting

Pulse menu, Channel The channel under test Pulse menu, Output On Pulse menu, ~Output Off Pulse menu, Pulse Rate Off Pulse menu, Polarity Complement Pulse menu, High Level 5.5 V Pulse menu, Low Level 0V

The output voltage reading on the DVM should be between 5.340 V and

5.660 V.

6. Change the Pulse menu Polarity item setting to Normal.

The output voltage reading on the DVM should be between –0.270 V and +0.270 V.

7. Set the HFS 9000 according to Table 4–12.

T able 4–12: HFS 9DG2 and HFS 9PG2 Output Level Checks, Second Settings

Control Setting

Pulse menu, High Level –1.0 V Pulse menu, Low Level –2.0V

The output voltage reading on the DVM should be between –2.090 V and –1.910 V.

8. Change the Pulse menu Polarity item setting to Complement.

The output voltage reading on the DVM should be between –1.070 V and –0.930 V.

9. Move the feedthrough termination assembly to the channel complemented

OUTPUT

if available (HFS 9PG2). The DVM is now set to monitor the

complement output.

HFS 9009 Service Manual

4–17

Performance Verification

10. Set the HFS 9000 according to Table 4–13.

T able 4–13: HFS 9PG2 Output Level Checks, Third Settings

Control Setting

Pulse menu, Output Off Pulse menu, ~Output On Pulse menu, Polarity Normal Pulse menu, High Level 5.5 V Pulse menu, Low Level 0 V

The output voltage reading on the DVM should be between 5.340 V and

5.660 V.

11. Change the Pulse menu Polarity item setting to Complement. The output voltage reading on the DVM should be between –0.270 V and

+0.270 V.

12. Set the HFS 9000 according to Table 4–14.

T able 4–14: HFS 9PG2 Output Level Checks, Fourth Settings

Control Setting

Pulse menu, High Level –1.0 V Pulse menu, Low Level –2.0V

The output voltage reading on the DVM should be between –2.090 V and –1.910 V.

13. Change the Pulse menu Polarity item setting to Normal. The output voltage reading on the DVM should be between –1.07 V and

–0.93 V.

14. Repeat steps 1 through 13 for each of the HFS 9PG2 and HFS 9DG2 channels in the system.

4–18

15. Disconnect test setup.

HFS 9009 Service Manual

Performance Verification

Output Level Checks

(HFS 9PG1 Card Only)

These tests check the output level in volts DC of each pulse generator channel. You will need to repeat these checks for each output channel; the number of times you repeat a check depends on the configuration of your HFS 9000. A reference to “the channel” is a reference to the particular channel being checked.

Equipment Required

1. Reset the HFS 9000.

2. Set the Digital Voltmeter to measure DC volts on Auto Range.

3. Construct the termination assembly by connecting the following items in the

order listed:

4. Connect the banana plug end of the termination assembly to the input of the DVM and connect the other end to the channel normal OUTPUT connector.

5. Set the HFS 9000 according to Table 4–15.

T able 4–15: HFS 9PG1 Output Level Checks, First Settings

Control Setting

Pulse menu, Channel The channel under test Pulse menu, Output On Pulse menu, ~Output Off Pulse menu, Pulse Rate Off Pulse menu, Polarity Complement Pulse menu, High Level 2.6 V Pulse menu, Low Level –0.4V

HFS 9009 Service Manual

4–19

Performance Verification

The output voltage reading on the DVM should be between 2.498 V and

2.702 V.

6. Change the Pulse menu Polarity item setting to Normal.

The output voltage reading on the DVM should be between –0.562 V and –0.238 V.

7. Set the HFS 9000 according to Table 4–16.

T able 4–16: HFS 9PG1 Output Level Checks, Second Settings

Control Setting

Pulse menu, High Level –1.0 V Pulse menu, Low Level –2.0V

The output voltage reading on the DVM should be between –2.090 V and –1.910 V.

8. Change the Pulse menu Polarity item setting to Complement.

The output voltage reading on the DVM should be between –1.07 V and –0.93 V.

9. Move the feedthrough termination assembly to the channel complemented

OUTPUT

. The DVM is now set to monitor the complement output.

10. Set the HFS 9000 according to Table 4–17.

T able 4–17: HFS 9PG1 Output Level Checks, Third Settings

Control Setting

Pulse menu, Output Off Pulse menu, ~Output On Pulse menu, Polarity Normal Pulse menu, High Level 2.6 V Pulse menu, Low Level –0.4 V

The output voltage reading on the DVM should be between 2.498 V and

2.702 V.

4–20

11. Change the Pulse menu Polarity item setting to Complement.

The output voltage reading on the DVM should be between –0.562 V and –0.238 V.

HFS 9009 Service Manual

Performance Verification

12. Set the HFS 9000 according to Table 4–18.

T able 4–18: HFS 9PG1 Output Level Checks, Fourth Settings

Control Setting

Pulse menu, High Level –1.0 V Pulse menu, Low Level –2.0V

The output voltage reading on the DVM should be between –2.090 V and –1.910 V.

13. Change the Pulse menu Polarity item setting to Normal. The output voltage reading on the DVM should be between –1.07 V and

–0.93 V.

14. Repeat steps 1 through 13 for each of the HFS 9PG1 channels in the system.

Trigger Output Level

15. Disconnect test setup.

This check verifies the level of the HFS 9000 trigger output.

Equipment Required

One Tektronix 11801B Digital Sampling Oscilloscope or CSA803A Communication Signal Analyzer (item 5) with sampling head (item 6)

Two SMA coaxial cables (item 8)

1. Connect an SMA cable from the HFS 9000 TRIGGER OUTPUT to the Channel 1 input of the DSO sampling head.

2. Connect an SMA cable from the DSO trigger input to the HFS 9000 Channel 1 output.

3. Reset the HFS 9000.

4. Initialize the DSO and select the Channel 1 sampling head input.

HFS 9009 Service Manual

4–21

Performance Verification

5. Press AUTOSET and set the HFS 9000 and DSO according to Table 4–19.

T able 4–19: Settings for Trigger Output Check

Control Setting

HFS 9000:

Pulse menu, Period Press SELECT to change the Period item to a

Frequency item

Pulse menu, Frequency 100MHz Pulse menu, Output On

DSO:

Main Size 2 ns Vertical Size 200 mV Vertical Offset 0 Main Position Minimum

Rise Time and Fall Time

Checks (HFS 9PG1 and

HFS 9DG1 Cards Only)

Measure Min, Max, Amplitude

6. Measure maximum value is less than or equal to –0.5 V, the minimum value

is greater than or equal to –1.5 V and the amplitude is greater than or equal to 300 mV

p-p

These checks verify the rise time and fall times of HFS 9PG1 pulse card and HFS 9DG1 data time generator channels. You will check each HFS 9000 high speed channel in turn. A reference to “the channel” is a reference to the particular channel under test.

Equipment Required

One Tektronix 11801B Digital Sampling Oscilloscope or CSA803A Communication Signal Analyzer (item 5) with sampling head (item 6)

Two SMA coaxial cables (item 8) One SMA 5X attenuator (item 7) One threaded SMA female to SMA male slip-on connector (item 11).

1. Reset the HFS 9000, then make the settings according to Table 4–20.

4–22

HFS 9009 Service Manual

Performance Verification

T able 4–20: Settings for Rise Time and Fall Time Checks

Control Setting

Pulse menu, Channel The channel under test Pulse menu, High Level Press SELECT to change the High Level item to an

Amplitude item, and the Low Level item to an Offset

item Pulse menu, Amplitude 1.0 V Pulse menu, Offset 0V Pulse menu, Polarity Normal Pulse menu, Period Press SELECT to change the Period item to a

Frequency item Pulse menu, Frequency 100 kHz Pulse menu, Pulse Rate Normal Pulse menu, Output On Pulse menu, ~Output Off

2. Initialize the DSO.

3. Connect an SMA cable from the HFS 9000 TRIGGER OUT connector to

the DIRECT connector located in the TRIGGER INPUTS section of the DSO. Set the DSO to trigger on that signal. Turn on averaging on the DSO.

CAUTION. To avoid accidentally damaging the sampling head of the DSO, place a 5X SMA attenuator on the sampling head input. Voltages in excess of 3 volts may damage the input circuit.

4. After placing a 5X SMA attenuator on the sampling head input, connect an SMA cable from the 5X SMA attenuator to the HFS 9000 normal OUTPUT connector of the channel under test. To save time connecting the cable to other channels, use the SMA slip-on connector on the end of the cable that connects to the HFS.

5. Set the DSO to display the signal with 50 mV/div (4 divisions) vertically at zero offset. Set the DSO time base to 1 s/div horizontally. Set the DSO MAIN POSITION to minimum.

HFS 9009 Service Manual

4–23

Performance Verification

6. Display the DSO measurement menu and turn on RISE and FALL measurements. Touch the RISE selector at the bottom of the DSO screen to display the RISE measurement parameters. Set these parameters according to Table 4–21.

T able 4–21: DSO Settings for Rise/Fall Time Checks

DSO Control Setting

Left Limit 0% Right Limit 100% Proximal 20% Distal 80% Tracking On Level Mode Relative

7. Once the DSO captures high and low levels, turn off tracking.

8. Set the DSO sweep speed to 500 ps/div and position the first rising edge at

center screen. The measured rise time should be less than 200 ps for HFS 9PG1 cards, and less than 250 ps for a HFS 9DG1 cards. (Use waveform averaging to stabilize the measurement.)

9. Change the Pulse menu Polarity item setting to Complement. The measured fall time should be less than 200 ps for HFS 9PG1 cards, and less than 250 ps for HFS 9DG1 cards.

10. Repeat steps 1 through 9 for each of the HFS 9PG1 or HFS 9DG1 card channels in the system. (For Not Output channels, set Output off and

~Output on.)

11. Disconnect test setup.

4–24

HFS 9009 Service Manual

Performance Verification

Rise Time and Fall Time

Checks (HFS 9PG2 and

HFS 9DG2 Cards Only)

These checks verify the rise time and fall times of HFS 9PG2 pulse card and HFS 9DG2 data time generator channels. You will check each HFS 9000 high speed channel in turn. A reference to “the channel” is a reference to the particular channel under test.

Equipment Required

One Tektronix 11801B Digital Sampling Oscilloscope or CSA803A Communication Signal Analyzer (item 5) with sampling head (item 6)

Two SMA coaxial cables (item 8) One SMA 5X attenuator (item 7) One threaded SMA female to SMA male slip-on connector (item 11).

1. Reset the HFS 9000, then make the settings listed in Table 4–22.

T able 4–22: Settings for Rise Time and Fall Time Checks

Control Setting

Pulse menu, Channel The channel under test Pulse menu, High Level Press SELECT to change the High Level item to an

Amplitude item, and the Low Level item to a Offset

item Pulse menu, Amplitude 1.0 V Pulse menu, Offset 0V Pulse menu, Polarity Normal Pulse menu, Transition 800 ps Pulse menu, Period Press SELECT to change the Period item to a

Frequency item Pulse menu, Frequency 100 kHz Pulse menu, Pulse Rate Normal Pulse menu, Output On Pulse menu, ~Output Off

2. Connect an SMA cable from the HFS 9000 TRIGGER OUT connector to the DIRECT connector located in the TRIGGER INPUTS section of the DSO. Set the DSO to trigger on that signal.

CAUTION. To avoid accidentally damaging the sampling head of the DSO, place a 5X SMA attenuator on the sampling head input. Voltages in excess of 3 volts may damage the input circuit.

HFS 9009 Service Manual

4–25

Performance Verification

3. After placing a 5X SMA attenuator on the sampling head input, connect an SMA cable from the 5X SMA attenuator to the HFS 9000 normal OUTPUT connector of the channel under test. To save time connecting the cable to other channels, use the SMA slip-on connector on the end of the cable that connects to the HFS.

4. Set the DSO to display the signal with 50 mV/div (4 divisions) vertically at zero offset. Set the DSO time base to 1 s/div horizontally. Set the DSO

MAIN POSITION to minimum.

5. Display the DSO measurement menu and turn on RISE and FALL

measurements. Touch the RISE selector at the bottom of the DSO screen to display the RISE measurement parameters. Set these parameters according to Table 4–23.

T able 4–23: DSO Settings for Rise/Fall Time Checks

DSO Control Setting

Left Limit 0% Right Limit 100% Proximal 20% Distal 80% Tracking On Level Mode Relative

6. Once the DSO captures high and low levels, turn off tracking.

7. Set the DSO sweep speed to 500 ps/div and position the first rising edge at

center screen. The measured rise time should be between 420 ps and 1.18 ns (HFS 9PG2 & HFS 9DG2 cards). (Use waveform averaging to stabilize the measurement.)

8. Change the Pulse menu Polarity item setting to Complement. The measured fall time should be between 420 ps and 1.18 ns (HFS 9PG2 & HFS 9DG2 cards).

9. Change the Pulse menu Polarity item setting to Normal. Set the Pulse menu Transition item to 5 ns.

10. Set the DSO time base to 5 ns/div. Use the RISE measurement to verify that

the rise time is between 4.2 ns and 5.8 ns (HFS 9PG2 & HFS 9DG2 cards).

4–26

11. Change the Pulse menu Polarity item setting to Complement. The measured fall time on the DSO should be between 4.2 ns and 5.8 ns (HFS 9PG2 & HFS 9DG2 cards).

HFS 9009 Service Manual

Performance Verification

12. Repeat steps 1 through 11 for each of the HFS 9PG2 or HFS 9DG2 card channels in the system. (For Not Output channels, set Output off and

~Output on.)

13. Disconnect test setup.

Edge Placement Checks

These checks verify the accuracy of the pulse delays and pulse widths. You will check each HFS 9000 channel in turn. A reference to “the channel” is a reference to the particular channel being checked in this repetition.

Equipment Required

One Tektronix 11801B Digital Sampling Oscilloscope or CSA803A Communication Signal Analyzer (item 5) with sampling head (item 6)

Two SMA coaxial cables (item 8) One threaded SMA female to SMA male slip-on connector (item 11).

1. Reset the HFS 9000, then make the settings according to Table 4–24.

T able 4–24: Settings for Edge Placement Checks

Control Setting

Pulse menu, Channel The channel under test Pulse menu, High Level Press SELECT to change the High Level item to an

Amplitude item, and the Low Level item to an Offset

item Pulse menu, Amplitude 1.0 V Pulse menu, Offset 0V

HFS 9009 Service Manual

Pulse menu, Period Press SELECT to change the Period item to a

Frequency item

Pulse menu, Frequency 100 kHz Pulse menu, Output On

2. If the channel is a Variable Rate (HFS 9PG2 or HFS 9DG2) channel, set

transition to the lowest (fastest) rise time possible. (A quick way to do this is to enter “0” on the numeric keypad.)

3. Connect an SMA cable from the HFS 9000 TRIGGER OUT connector to the DIRECT connector located in the TRIGGER INPUTS section of the DSO.

4. Connect an SMA cable from the normal OUTPUT connector of the HFS 9000 channel under test to the sampling head input of the DSO. To save

4–27

Performance Verification

time connecting the cable to other channels, use the SMA slip-on connector on the end of the cable that connects to the HFS.

5. Initialize the DSO, then set the DSO to display a triggered signal with

200 mV/div (5 divisions) vertically at zero offset. Set the DSO time base to 1 s/div horizontally. Set the DSO MAIN POSITION to minimum.

6. Display the DSO measurement menu and turn on WIDTH and CROSS measurements. On the DSO, touch the WIDTH selector at the bottom of the DSO screen to display the width measurement parameters. Set the DSO width LEVEL MODE parameter to RELATIVE. Turn the DSO tracking on.

7. On the DSO, turn tracking off when the high and low levels have been acquired.

8. Set the DSO sweep speed to 500 ps/div. Position the rising edge of the displayed waveform at the center of the DSO screen. On the DSO, save the cross measurement as the reference (in the Compare & References pop-up menu).

9. On the DSO, turn COMPARE on.

10. Refer to Table 4–25 or 4–26, as appropriate, and adjust for each of the specified Pulse menu Lead Delay settings listed in the left column. For each Lead Delay value, verify that the DSO CROSS measurement falls within the

limits specified in the middle and right columns. You may need to adjust the DSO horizontal position to keep the rising edge on the screen.

T able 4–25: Lead Delay Limits for HFS 9PG1 and HFS 9PG2

HFS 9000 Pulse Menu Lead Delay Setting

100 ps –201 ps 401 ps 500 ps 195 ps 805 ps 1ns 690ps 1.31 ns 5ns 4.65ns 5.35 ns 10 ns 9.60 ns 10.4ns 50 ns 49.2 ns 50.8ns 100 ns 98.7 ns 101.3ns

DSO CROSS Measurement Minimum

DSO CROSS Measurement Maximum

4–28

HFS 9009 Service Manual

Performance Verification

T able 4–26: Lead Delay Limits for HFS 9DG1 and HFS 9DG2

HFS 9000 Pulse Menu Lead Delay Setting

100 ps 49 ps 151 ps 500 ps 445 ps 555 ps 1ns 940ps 1.060 ns 5ns 4.9ns 5.1ns 10 ns 9.85 ns 10.15ns 50 ns 49.45 ns 50.55ns 100 ns 98.95 ns 101.05ns

DSO CROSS Measurement Minimum

DSO CROSS Measurement Maximum

11. Set the DSO horizontal position to minimum. Turn the DSO COMPARE off.

12. On the HFS 9000, use the SELECT button to change the Pulse menu Duty Cycle item to a Width item. Set the Lead Delay item to zero.

13. Skip this step if the channel is a Variable Rate (HFS 9PG2 or HFS 9DG2)

channel. Refer to Table 4–27 or Table 4–28. Adjust the DSO horizontal position to display the first rising edge at screen. While observing the width measurement readout on the DSO, adjust the HFS 9000 Pulse Width item with the knob in Fine mode until each reading in the left column is achieved on the DSO. Then, observe the Width item setting on the HFS 9000 that achieved this result. Verify that the HFS 9000 value is within the limits specified in the middle and right columns. You may need to adjust the DSO horizontal position to keep the pulse on the screen.

HFS 9009 Service Manual

T able 4–27: Width Variance Limits for HFS 9PG1

DSO WIDTH Measurement Readout

500 ps 195 ps 805 ps 750 ps 443 ps 1.06 ns 1ns 690ps 1.31 ns

HFS 9000 Width Setting Minimum

HFS 9000 Width Setting Maximum

4–29

Performance Verification

Pulse Menu

DSO WIDT

T able 4–28: Width Variance Limits for HFS 9DG1

DSO WIDTH Measurement Readout

650 ps 594 ps 732 ps 750 ps 693 ps 833 ps 1ns 940ps 1.085 ns

HFS 9000 Width Setting Minimum

HFS 9000 Width Setting Maximum

14. Refer to Tables 4–29, 4–30 and 4–31, as appropriate, and set each of the specified Pulse menu Width settings listed in the left column. For each Width setting, verify that the DSO WIDTH measurement falls within the limits specified in the middle and right columns. Adjust the horizontal time/division as necessary to keep a full pulse displayed on screen.

T able 4–29: Width Limits for HFS 9PG1 and HFS 9PG2

DSO WIDTH

HFS9000 Width Setting

5ns 4.65 ns 4.45 ns 5.35ns 10 ns 9.60 ns 9.40 ns 10.4ns

Measurement Minimum HFS 9PG1 HFS 9PG2

Measurement Maximum

50 ns 49.2 ns 49.2 ns 50.8 ns 100 ns 98.7 ns 98.7 ns 101.3 ns 500 ns 494.7 ns 494.7 ns 505.3 ns 1 ms 990 ns 990 ns 1.01ms

T able 4–30: Width Limits for HFS 9DG1

HFS 9000 Pulse Menu Width Setting

5ns 4.875 ns 5.1 ns 10 ns 9.825 ns 10.15ns 50 ns 49.45 ns 50.55ns 100 ns 98.95 ns 101.05ns 500 ns 494.95 ns 505.05 ns 1 ms 990 ns 1.01ms

DSO WIDTH Measurement Minimum

DSO WIDTH Measurement Maximum

4–30

HFS 9009 Service Manual

T able 4–31: Width Limits for HFS 9DG2 1

Performance Verification

Frequency Accuracy

Check

HFS 9000 Pulse Menu Width Setting

5ns 4.500 ns 5.1 ns 10 ns 9.450 ns 10.15ns 50 ns 49.25 ns 50.55ns 100 ns 98.75 ns 101.05ns 500 ns 494.8 ns 505.1ns 1 ms 990 ns 1.01ms

DSO WIDTH Measurement Minimum

DSO WIDTH Measurement Maximum

15. Repeat steps 1 through 14 for each of the channels in the system. (For Not Output channels, set Output off and ~Output on).

16. Disconnect test setup.

Equipment Required

One Tektronix 11801B Digital Sampling Oscilloscope or CSA803A Communication Signal Analyzer (item 5) with sampling head (item 6)

One SMA coaxial cable (item 8) One threaded SMA female to SMA male slip-on connector (item 11).

1. Reset the HFS 9000, then use the SELECT button to change the Pulse menu Period item to a Frequency item.

2. Connect an SMA cable from the HFS 9000 TRIGGER OUT connector to the

DIRECT connector located in the TRIGGER INPUTS section of the DSO. Set the DSO to trigger on that signal.

3. Connect an SMA cable from the normal OUTPUT connector of any High Speed HFS 9000 channel to the sampling head input of the DSO. To save time connecting the cable to other channels, use the SMA slip-on connector on the end of the cable that connects to the HFS.

NOTE. If you have any HFS 9PG2 channels, set the Pulse menu Pulse Rate item to Half for those channels. If you have Variable Rate or HFS 9DG2 channels, use one of them for this test.

4. Turn on the output of the HFS 9000 channel you are using.

HFS 9009 Service Manual

4–31

Performance Verification

5. Set the DSO to display the signal with 200 mV/div vertically and a vertical

offset of –1.3 V. Set the DSO time base to 500 ps/div horizontally. Set the DSO MAIN POSITION to minimum.

6. Display the DSO measurement menu and turn on the FREQUENCY

measurement. On the DSO, turn TRACKING on and turn on AVERAGING with AVGN set to 32.

7. Refer to Tables 4–32, 4–33, or 4–34 as appropriate, and adjust for each of the specified Pulse menu Frequency settings listed in the left column. For each Frequency value, verify that the DSO FREQUENCY measurement falls within the limits specified in the middle and right columns. Adjust the horizontal size and position to make the display of a single cycle fill the DSO screen.

T able 4–32: Frequency Limits (HFS 9PG1 & HFS 9DG1)

HFS 9000 Pulse Menu Frequency Setting

50 kHz 49.5 kHz 50.5 kHz 324 MHz 320.8MHz 327.2 MHz 326 MHz 322.7MHz 329.3 MHz 400 MHz 396.0MHz 404.0 MHz 433 MHz 428.7MHz 437.3 MHz 466 MHz 461.3MHz 470.7 MHz 500 MHz 495.0MHz 505.0 MHz 533 MHz 527.7MHz 538.3 MHz 566 MHz 560.3MHz 571.7 MHz 600 MHz 594.0MHz 606.0 MHz 630 MHz 623.7MHz 636.3 MHz

DSO FREQUENCY Minimum

DSO FREQUENCY Maximum

T able 4–33: Frequency Limits (HFS 9PG2)

HFS 9000 Pulse Menu Frequency Setting

100 kHz 49.5 kHz 50.5 kHz

DSO FREQUENCY ( 2) Minimum

DSO FREQUENCY ( 2) Maximum

4–32

324 MHz 160.4MHz 163.6 MHz 326 MHz 161.4MHz 164.6 MHz 400 MHz 198MHz 202MHz 433 MHz 214.3MHz 218.7 MHz

HFS 9009 Service Manual

T able 4–33: Frequency Limits (HFS 9PG2) (Cont.)

Performance Verification

HFS 9000 Pulse Menu Frequency Setting

466 MHz 230.7MHz 235.3 MHz 500 MHz 247.5MHz 252.5 MHz 533 MHz 263.8MHz 269.2 MHz 566 MHz 280.2MHz 285.8 MHz 600 MHz 297.0MHz 303.0 MHz

DSO FREQUENCY ( 2) Minimum

DSO FREQUENCY ( 2) Maximum

T able 4–34: Frequency Limits (HFS 9DG2)

HFS 9000 Pulse Menu Frequency Setting

50 kHz 49.5 kHz 50.5 kHz 162 MHz 160.4 MHz 163.6MHz 163 MHz 161.4 MHz 164.6MHz 200 MHz 198.0MHz 202.0 MHz

216.5 MHz 214.3 MHz 218.7MHz 233 MHz 230.7MHz 235.3 MHz

DSO FREQUENCY Minimum

DSO FREQUENCY Maximum

250 MHz 247.5MHz 252.5 MHz

266.5 MHz 263.8 MHz 269.2MHz 283 MHz 280.2MHz 285.8 MHz 300 MHz 297.0MHz 303.0 MHz

HFS 9009 Service Manual

4–33

Performance Verification

Phase Lock Check

Equipment Required

Generator, Leveled Sine Wave (item 9) BNC female to SMA male adapter (item 10).

This check verifies that the phase lock system is capable of detecting, accurately measuring, and holding an input signal.

NOTE. If the HFS 9009 cannot determine the phase lock frequency, an error message is displayed. This will happen if the phase lock signal is not stable and continuous, or if the phase lock signal is outside the allowed frequency range, or if the HFS 9009 needs calibrating.

1. Reset the HFS 9000.

2. Set the signal generator for an amplitude of 0.8 V

and a frequency of

p-p

250 MHz. Connect the signal to the HFS 9000 PHASE LOCK IN connector. If your generator does not have better than 1% frequency accuracy, use the FREQUENCY measurement capability of the DSO to set the generator frequency to within 1%.

3. Set the Time Base menu PhaseLockIn item to On.

4. Check that the input frequency is correctly displayed on the HFS 9000

screen immediately above the menu area.

5. Wait at least five seconds and make sure that the HFS 9000 retains phase lock. (If phase lock is lost, you will see an error message.)

6. Set the Time Base menu PhaseLockIn item to Off.

7. Repeat steps 3 through 6 with the signal generator set to 594 MHz. If your

generator does not have better than 1% frequency accuracy, use the FREQUENCY measurement capability of the DSO to set the generator frequency to within 1%.

8. You may optionally check other frequencies as well. Low frequency checks will require a different generator (such as a square wave generator) which meets to 20% to 80% risetime requirement of 10 ns or less for the PHASE

LOCK IN input.

9. Disconnect test setup.

4–34

HFS 9009 Service Manual

Adjustments

The input line power voltage range for the HFS 9009 is 90 VAC to 250 VAC and is range switched automatically. The DC outputs from the power supply are not adjustable.

HFS 9009 Service Manual

5–1

Adjustments

5–2

HFS 9009 Service Manual

Preventive Maintenance

Accumulations of dirt impair the efficiency of the cooling fans and reduce heat transfer from components. Dirt may also cause faulty operation of the fan speed control temperature sensor. Periodically vacuum dirt and dust from the inside of the mainframe, paying particular attention to the fans. Heavy accumulations of dirt should be removed with a soft brush.

CAUTION. Do not use water or alcohol to clean the backplane card connectors.

HFS 9009 Service Manual

6–1

Preventive Maintenance

6–2

HFS 9009 Service Manual

Removal and Replacement

The removal and replacement procedures describe the disassembly of the HFS 9009 to service the instrument. Observe all cautions and warnings. Refer to the Diagrams section of this manual for a block diagram of the HFS 9009.

Front Panel

The Front Panel must be removed to gain access to the keypad, display module, and bezel. Turn off instrument power when removing or replacing the front panel.

Removal

Replacement

H Remove the four screws holding on the front panel. H Disconnect the ribbon cable connecting the front panel module to the CPU

card. Mark it for proper reconnection.

H Connect the ribbon cable between the front panel module and the CPU card. H Set the front panel into the instrument frame and replace the four screws.

Front Panel Keypad and Encoder Switch

The encoder switch and the keypad on the left of the front panel can be replaced if they are defective. Turn off instrument power when removing or replacing the modules.

Removal

1. Remove the front panel (see Front Panel Removal). Lay the front panel face

down on the work bench.

2. Disconnect the ribbon cable located at the bottom of the keypad circuit

board. Mark it for proper reconnection.

3. To remove the keypad circuit board assembly:

H Unsolder the wires from the encoder switch where they attach to the

circuit board. Note their orientation for replacement.

HFS 9009 Service Manual

H Remove the six screws which secure the circuit board and lift it off the

circuit board.

4. To remove the encoder switch:

H Unsolder the wires from the encoder switch.

6–3

Removal and Replacement

H Using a hex wrench, loosen the two set screws in the knob and remove

the knob from the encoder shaft.

H Remove the hex nut that secures the encoder switch and remove the

encoder switch from the keypad assembly.

Replacement

Display Module

1. To replace the encoder switch:

H Insert the encoder switch through the front panel. Replace the hex nut

that secures the encoder switch. Orient the switch so that the switch soldering lugs are closest to the circuit board assembly.

H Resolder the wires to the encoder switch. H Using a hex wrench, place the knob on the encoder shaft and tighten the

two set screws in the knob.

2. To replace the keypad circuit board assembly:

H Resolder the wires from the encoder switch. H Align the holes in the circuit board with the spacers on the front panel.

Replace the six screws which secure the circuit board.

H Reconnect the flat ribbon cable to the keypad circuit board assembly.

3. Replace the front panel (see Front Panel Replacement).

6–4

Removal

Replacement

The Front Panel must be removed to gain access to the display module. Turn off instrument power when removing or replacing the front panel.

1. Remove the front panel (see Front Panel Removal).

2. Lay the front panel face down and remove the four nuts which attach the

display module to the front panel.

3. Disconnect the ribbon cable located at the bottom of the display module, note its alignment for replacement, and lift off the display module.

1. Set the display module on the front panel. Align the module so that the ribbon cable connector is closest to the ribbon cables on the top panel circuit board assembly.

2. Reconnect the ribbon cable.

3. Replace the four nuts which attach the display module to the front panel.

4. Replace the front panel (see Front Panel Replacement).

HFS 9009 Service Manual

Top Panel Circuit Board and Trim Bezel

The Front Panel must be removed to gain access to the Top Panel circuit board assembly and front panel trim bezel. Turn off instrument power when removing or replacing the front panel.

Removal and Replacement

Removal

Replacement

1. Remove the front panel (see Front Panel Removal).

2. Lay the front panel face down. Remove the four nuts and washers which

attach the display module to the front panel.

3. Disconnect the ribbon cable located at the bottom of the display module,

note its alignment for replacement, and lift off the display module.

4. To remove the Top Panel circuit board assembly or Trim Bezel:

H Disconnect the three flat panel ribbon connectors. Note their orientation

for replacement.

H Remove the four nuts which secure the Top Panel circuit board assembly

and lift off the circuit board assembly.

H Lift off the Trim Bezel.

1. If the Trim Bezel was removed, replace it.

2. Place the top panel circuit board assembly back on the front panel and

replace the four nuts which attach the circuit board assembly to the front panel. Do not overtighten the nuts. When you press the push buttons from the front panel you should feel a distinct “click.” If the nuts are overtightened, you will not feel a click when you depress the push buttons.

ON/STANDBY Switch

HFS 9009 Service Manual

3. Set the display module on the front panel. Align the module so that the

ribbon cable connector is closest to the ribbon cables on the top panel circuit board assembly.

4. Reconnect the ribbon cable located at the bottom of the display module.

5. Replace the four nuts which attach the display module to the front panel.

6. Replace the front panel (see Front Panel Replacement).

The ON/STANDBY push button is made up of two subassemblies. One is the power switch actuator assembly that fits through the front panel. The second subassembly is a power switch mounted on the internal chassis. The internally mounted switch is not a replaceable part. The power switch actuator on the front panel can be replaced. The Front Panel must be removed to gain access to the

6–5

Removal and Replacement

power switch actuator. Turn off instrument power when removing or replacing the front panel.

Cards

Removal

Replacement

Removal

1. Remove the front panel (see Front Panel Removal).

2. To remove the power switch actuator:

H Lay the front panel face down. H Remove the two nuts which secure the actuator. Lift off the actuator.

1. Place the power switch actuator onto the front panel and reattach the two nuts.

2. Replace the front panel (see Front Panel Replacement).

Pulse and data generator cards are located behind the small panels in the open area of the front panel. Turn off instrument power when removing or replacing cards.

1. Remove the front panel module (see Front Panel Removal).

2. If the card you are removing is the time base card or any pulse or data

generator card, remove the clock distribution cable (see Figure 6–1).

Index Marks

Pulse Card

Time Base Card

Figure 6–1: Clock Distribution Cable Location

3. Each card is fastened with two screws, one on either end of the card front panel. Remove these screws and pull the card straight forward.

Replacement

1. Push the card into the appropriate slot through in the mainframe. Refer to the

Diagrams section of this manual to identify the proper card position in the

Clock Distribution Cable

6–6

HFS 9009 Service Manual

Mainframe Top Cover

Removal

Removal and Replacement

rack. Reattach the card with two screws, one on either end of the card front panel.

2. If the card is a pulse or data generator card, or a time base card, reattach the

clock distribution cables. Align the index mark on the cable connectors with the index marks on the card. When all cards are installed, a clock distribution cable must connect the time base card to each pulse or data generator card (see Figure 6–1). The time base card has several connectors for clock distribution cables; it does not matter which of these connectors is used for each pulse or data generator card.

For mainframe service operations, only the top cover needs to be removed.

Replacement

WARNING. To avoid electric shock, disconnect the power source when removing or replacing the covers. Hazardous voltages are exposed when the covers are removed, even when the power switch is in the standby position. Use extreme caution when the instrument is connected to the power source while the covers are removed.

1. Remove the six screws located along the bottom of the top cover above the

rack mount slides and toward the rear of the instrument (there are three screws on each side).

2. Remove the four screws that attach the front panel to the mainframe.

3. Disconnect the ribbon cable connecting the front panel module to the CPU

card. Mark it for proper reconnection. Set the front panel aside.

4. Remove the four screws, their retaining nuts, and the vertical brackets from

the front outside edge (two on each side).

5. Remove the six screws on the top of the cover and lift off the cover.

1. Place the cover on the frame. Replace the six screws on the top of the cover.

2. Replace the six screws located along the bottom of the top cover and above

the rack mount slides.

HFS 9009 Service Manual

3. Replace the four screws, their retaining nuts, and vertical brackets along the

front outside edge (two along each side).

4. Connect the ribbon cable between the front panel module and the CPU card.

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Removal and Replacement

5. Set the front panel into the instrument frame and replace the four screws.

Power Supply (lower back panel)

WARNING. To avoid electric shock, disconnect the power source when removing or replacing the power supply. Hazardous voltages are exposed when the power supply and covers are removed, even when the power switch is in the standby position.

Removal

1. Remove the five mounting screws and washers in the lower back panel (see Figure 6–2).

2. Carefully slide out the power supply (lower back panel) by pulling on the center handle.

Mounting Screw HandleFan Speed Switch Fuse

Terminal

Block

Mounting Screw

Chassis Ground

Mounting Screw

Figure 6–2: HFS 9009 Power Supply (rear view)

Replacement

1. Carefully slide the power supply (lower back panel) into the mainframe.

2. Replace the five mounting screws and washers in the lower back panel.

6–8

Mounting Screw Mounting Screw

AC Power Connector

HFS 9009 Service Manual

Fans (upper back panel)

Removal and Replacement

WARNING. To avoid electric shock or personal injury, disconnect the power source when removing or replacing the fans. Hazardous voltages and dangerous fan blades are exposed when the fans and covers are removed, even when the power switch is in the standby position.

Removal

Replacement

1. Remove the two handles of the upper back panel by removing the two

screws in each handle.

2. Remove the two screws in the top cover of the mainframe that attach the

upper back panel to the mainframe.

3. Slide out the upper back panel.

4. Remove the four screws and nuts that attach the fan unit to the upper back

panel.

5. Disconnect the power supply cable from the fan.

1. Position the fan unit so that the label in the center of the fan faces away from

the outside of the upper back panel. The power connector should be at the top of the upper back panel.

2. Reconnect the power supply cable to the fan power connector.

3. Replace the four screws and nuts that attach the fan unit to the upper back

panel.

4. Slide the upper back panel into the mainframe and replace the two screws in

the top cover of the mainframe.

5. Replace the two handles.

Fan (side panel)

HFS 9009 Service Manual

6–9

Removal and Replacement

Removal

Replacement

1. Remove the power supply (see Power Supply Removal).

2. Loosen the four thumbscrews that attach the fan unit to the side of the

mainframe.

3. Disconnect the power supply cable from the fan.

4. Remove the four screws and four nuts that hold the two brackets to the fan.

1. Install the two brackets on the new fan.

2. Position the fan unit so that the label in the center of the fan faces to the

outside of the mainframe. The power connector should be at the top.

3. Reconnect the power supply cable to the fan.

4. Tighten the four thumbscrews that attach the fan unit to the mainframe.

5. Replace the power supply (see Power Supply Replacement).

6–10

HFS 9009 Service Manual

Troubleshooting

Power-On Diagnostics

This section provides information necessary to troubleshoot the HFS 9009 at the circuit board level. The primary troubleshooting method is to use the power-on and self-test diagnostics to identify faulty Field Replaceable Units (FRUs). The FRUs include the plug-in cards, front panel modules, fans, knobs, switches, and any individual component that is listed in the Mechanical Parts List section of this manual.

Power-on diagnostics execute automatically whenever the mainframe power is switched on. The HFS 9009 uses three stages of diagnostics which run consecutively: the kernel test, controller test, and self test. Diagnostics advance to the next stage only if the preceding stage does not detect an error. In self-test diagnostics, once an error message is displayed on the screen, you can request that the diagnostics continue. When all tests successfully complete, the instrument goes into normal operating mode. Test failures result in error-code outputs which can be cross-referenced to suspect FRUs.

Kernel-Test Diagnostics

Controller-Test

Diagnostics

Self-Test Diagnostics

The kernel test is the first stage of diagnostics. It verifies the functionality of the hardware needed to run the internal operating system.

The controller test is the second stage of diagnostics. It is run by the internal operating system. It verifies the CPU support circuitry on the controller (CPU) card, the backplane bus, and the front-panel module.

The self test is the last stage of diagnostics and verifies the functionality of the time base card and the pulse and data generator cards. This test differs from the kernel- and controller-test diagnostics in two ways. First, the self-test diagnostics display messages on the screen. Once a self-test failure has occurred, you can display more information or continue running the remaining diagnostics.

Second, the self-test diagnostics can be run at any time. Use the Cal/Deskew menu Self Test item on the front panel or execute the *TST? command from the GPIB or RS-232-C programmable ASCII interface. Refer to the Self-Test Diagnostics Section on page 6–12 of this manual or the HFS 9000 User Manual for more information.

HFS 9009 Service Manual

6–11

Troubleshooting

Self-Test Diagnostics

You can run the self-test diagnostics using the Self Test item in the Cal/Deskew menu. In addition, the same function can be initiated from either ASCII interface (RS-232-C or GPIB) under the control of a remote computer or controller. Refer to the HFS 9000 User Manual for detailed information about using the program- ming interfaces. The *TST? query runs the self test and reports the results. The self test does not require operator interaction and does not create bus conditions that violate IEEE 488.1/488.2 standards. When the test is complete, the HFS 9009 returns to the state it was in prior to the self test.

The test response is a value as described in Table 6–1.

T able 6–1: Results from *TST?

Test Response Value

0 test completed with no errors detected

Meaning

Calibration

SSCC system in which a slot and card produced the first detected error:

SS = slot number: 01 = CPU slot

02 = time base slot 03 = slot A 04 = slot B . . . 11 = slot I

CC = card type: 10 = CPU card

20 = time base card 31 = high speed pulse generator card (HFS 9PG1) 32 = variable rate pulse generator card (HGS 9PG2) 33 = high speed data time generator card (HFS 9DG1) 34 = variable rate data time generator card (HFS 9DG2)

9900 system configuration is not valid

The self test query can take 30 seconds or more to complete. If an error is detected, the self test stops, returns an error code, and does not finish the remaining tests.

6–12

Calibration measures the performance of the HFS 9009 against specifications and performs automatic internal adjustments to bring the HFS 9009 into specification. Calibration differs from diagnostic tests in that diagnostic tests only verify that the circuits are operational.

HFS 9009 Service Manual

Error Indications

Troubleshooting

Calibration is normally a function initiated by the user. However, calibration can be automatically initiated by the power-on diagnostics if they determine that the HFS 9009 is out of specification or has been reconfigured.

It is possible to generate error codes by running a calibration procedure at a time other than power on.

There are two mechanisms for reporting errors: diagnostic LED error indexes and extended mode menus.

Kernel-test and controller-test failures are identified by a LED error index, and, if they are not display related, by a displayed error message. These messages are in the following format:

CONTROLLER DIAGNOSTICS FAILED <test name>

When any kernel test or controller test fails, the CPU hangs in a loop and the instrument appears dead. For corrective action, see Table 6–2 and Figure 6–5.

Bit Assignments For

Diagnostic LEDs

Kernel and controller testing occurs quickly, so the LEDs will only turn on briefly as they switch between on and off states. If the LEDs never turn on during power on, or if any LEDs remain lit, then an error is indicated.

Self-test errors are identified by LED error indexes that indicate the faulty card, and by extended mode menus on the front panel. In all cases, a faulty FRU is identified by the LED error indications.

The bank of diagnostic LEDs is located on the CPU card inside the LED cover. Figure 6–3 shows the location of the LED cover and LEDs. Keep in mind that the CPU card is positioned vertically in the HFS 9009 mainframe with the front panel connector at the top and the GPIB port at the bottom. The following instructions assume this vertical positioning of the CPU card.

To see the LEDs, remove the screw attaching the cover to the CPU card. A firmware update stick might be installed in the slot behind the cover. You can see the bank of eight LEDs on the side nearest to the serial port connector. You may need to use a small flashlight to see all of the unlit LEDs.

HFS 9009 Service Manual

6–13

Troubleshooting

LED Cover

LED Cover Removed

to Show LEDs Inside Instrument

Figure 6–3: The Location of LEDs on the CPU Card

The eight LEDs are numbered D6 (farthest from the front panel) through D13 (nearest the front panel) as shown in Figure 6–4.

The onset, completion, or failure of testing is indicated by LED D13. LEDs D6 through D10 combine to display the error index code. These five LEDs are combined to make a hexadecimal value in the range of 00 through 1F. LED D6 is the low order bit; LED D10 is the high order bit.

At power on, status LEDs are turned off. At the start of the tests, status LEDs are turned on. If a kernel test fails but completes execution, the D13 LED turns off and the processor stops. If a kernel test is unable to finish, the D13 LED remains lit. To identify a failed test, read the error index code.

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HFS 9009 Service Manual

Troubleshooting

LED Locater

D10

D11

D12

D13

Front of

Instrument

Pass/Fail

Legend

Error Index

D10

D11

D12

D13

Converting the LED Error Index Code to Hexadecimal (an example)

11010

1 A Hexadecimal

At hardware

power on

At firmware

power on

Test in

progress

Test finished

but failed

0000=0 0001=1 0010=2 0011=3 0100=4 0101=5 0110=6 0111=7 1000=8 1001=9 1010=A 1011=B 1100=C 1101=D 1110=E 1111=F

All tests

passed

LED lit

LED unlit

D10

D11

LED can be either lit or unlit, but at least one LED in the set

D12

is lit

D13

Figure 6–4: Bit Assignments for Diagnostic LEDs

HFS 9009 Service Manual

6–15

Troubleshooting

Diagnostic Procedure

Table 6–2 and Figure 6–5 indicate how to proceed from each of the error index codes. Codes 1B and higher provide a message on the screen. You can press any button other than SELECT to see additional error information. This can be easier than decoding the error index code.

T able 6–2: Troubleshooting From the Error Index Code

If you see this Error Index Code

01 through 09, 0B through 0F, 11

0A Replace the front panel module and cable. 10 Follow the diagnostic procedure flowchart (Figure 6–5) starting at

1A Remove the cards one by one and retest. Always remove cards starting

1B Make sure the CPU card is installed in the left-most card slot, the Time

1E Check the clock distribution cables (see Figure 6–1 on page 6–6). If

1F Replace the time base card.

These values are hexadecimal.

Do This

Replace the CPU card.

step A.

at the right and moving to the left. Stop before removing the CPU card. When you remove the last generator card, you will observe a configuration error (1B); ignore it and press SELECT to continue. If the test passes, the last card removed is faulty. If the 1A failure persists when only the CPU card is installed, then the possible sources of trouble are the CPU card or the backplane.

Base card is installed in the next card slot, and the pulse and data generator cards are installed immediately to the right (starting with slot A). Any unused card slots must be to the right. If these conditions are met and the error persists, follow the procedure for Error Index Code 1A.

they are installed correctly, follow the diagnostic procedure flowchart (Figure 6–5) starting at step B.

6–16

NOTE. If you observe multiple error messages, the power supply may be defective. Marginal

power supply voltages can cause other apparently unrelated failures. If you believe the power supply is faulty, please contact your local Tektronix service representative.

HFS 9009 Service Manual

Tektronix HFS9009 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Service Manual

Table of Contents

Specifications

Operating Information

Theory of Operation

Performance Verification

Adjustment Procedures

Maintenance

Options Electrical Parts List Diagrams

Mechanical Parts List

List of Figures

List of Tables

General Safety Summary

Injury Precautions

Product Damage Precautions

Safety Terms and Symbols

Certifications and Compliances

Service Safety Summary

Preface

Notation Conventions

Related Manuals

Specifications

Nominal Traits

Warranted Characteristics

Typical Characteristics

Operating Information

Menu Selections

Resetting the HFS 9009

Setting the Time Base

The UNDO Button

Pulse Output

Module Descriptions

Mainframe

Front Panel

Cards

Performance Verification

Required Test Equipment

Test Record

Verification Sequence

Check Procedures

Adjustments

Preventive Maintenance

Removal and Replacement

Front Panel

Front Panel Keypad and Encoder Switch

Display Module

Top Panel Circuit Board and Trim Bezel

ON/STANDBY Switch

Cards

Mainframe Top Cover

Power Supply (lower back panel)

Fans (upper back panel)

Fan (side panel)

Troubleshooting

Power-On Diagnostics

Self-Test Diagnostics

Calibration

Error Indications

Diagnostic Procedure