Service Guide
8590 Series Analyzers
Assembly-Level Repair
Manufacturing Part Number: 08590-90316
Supersedes: 08590-90300
Printed in USA
April 2001
© Copyright 1992-1998, 2001 Agilent Technologies, Inc.
The information contained in this document is subject to change without notice.
Agilent Technologies makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
2
Certification
Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.
Regulatory Information
The specifications and characteristics chapter in this manual contain regulatory information.
Warranty
This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Agilent Technologies will, at its option, either repair or replace products which prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Agilent Technologies. Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returned to Agilent Technologies from another country.
Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instructions when properly installed on that instrument. Agilent Technologies does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error-free.
3
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Assistance
Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies products.
For any assistance, contact your nearest Agilent Technologies Sales and Service Office.
4
8590 E-Series and L-Series Spectrum
Analyzer Documentation Description
The following guides are shipped with your 8590 E-Series or L-Series spectrum analyzer.
8590 E-Series Spectrum Analyzers and 8591C Cable TV Analyzer Calibration Guide
•Tells you how to test your analyzer to determine if the analyzer meets its specifications.
8590 E-Series and L-Series Spectrum Analyzers User’s Guide
•Tells you how to make measurements with your analyzer.
•Describes the analyzer features.
•Tells you what to do in case of a failure.
8590 E-Series and L-Series Spectrum Analyzers Quick Reference Guide
•Describes how to make a simple measurement with your analyzer.
•Briefly describes the analyzer functions.
•Lists all the programming commands.
5
8591C Cable TV Analyzer Documentation
Description
The following guides are shipped with your cable TV analyzer.
8590 E-Series Spectrum Analyzers and 8591C Cable TV Analyzer Calibration Guide
•Tells you how to test your analyzer to determine if the analyzer meets its specifications.
8591C Cable TV Analyzer User’s Guides
Cable TV Measurements
•Tells you how to make cable TV measurements with your analyzer.
•Describes the cable TV analyzer mode features.
Spectrum Analyzer Reference
•Tells you how to make measurements using the spectrum analyzer mode.
•Describes the spectrum analyzer mode features.
•Tells you what to do in case of a failure.
8591C Cable TV Analyzer Getting Started and Quick Reference Guide
•Describes how to make a simple measurement with your analyzer.
•Briefly describes the cable TV and spectrum analyzer functions.
•Provides a quick reference for cable TV and spectrum analyzer softkeys.
8590 E-Series and L-Series Spectrum Analyzers, and 8591C Cable TV Analyzer Programmer’s Guide
•Describes analyzer operation via a remote controller (computer) for Parallel/RS-232 or Parallel/GPIB interface. This manual is provided when ordering either Option 041, Option 043, or 8591C.
6
8594Q QAM Analyzer Documentation
Description
The following guides are shipped with your QAM analyzer.
8590 Series Analyzers Calibration Guide
•Tells you how to test your analyzer to determine if the analyzer meets its specifications.
8594Q QAM Analyzer User's Guides
Option 190/195 DVB-C/Data Measurements
•Tells you how to make QAM measurements with your analyzer.
•Describes the QAM analyzer mode features.
Spectrum Analyzer Reference
•Tells you how to make measurements using the spectrum analyzer mode.
•Describes the spectrum analyzer mode features.
•Tells you what to do in case of a failure.
8594Q Option 190/195 DVB-C/Data Measurement QAM Analyzer Getting Started and Quick Reference Guide
• Provides a quick reference for QAM and spectrum analyzer softkeys.
7
Documentation Options
Option 041 or 043: Programmer's Guide
8590 E-Series and L-Series Spectrum Analyzers, and 8591C Cable TV Analyzer Programmer's Guide
•Describes analyzer operation via a remote controller (computer) for Parallel/RS-232 or Parallel/GPIB interface.
Option 910: Additional User's Documentation
Provides an additional copy of the user's guides, the calibration guide, and the quick reference guide.
Option 915: Service Guide and Component-Level Information
Describes troubleshooting and repair of the analyzer.
Option 915 consists of two manuals:
8590 Series Analyzers Assembly-Level Repair Service Guide
• Describes adjustment and assembly level repair of the analyzer.
8590 Series Analyzers Component-Level Repair Service Guide
• Provides information for component-level repair of the analyzer.
How to Order Guides
Each of the guides listed above can be ordered individually. To order, contact your local Sales and Service Office.
How to Use This Guide
This guide uses the following conventions.
Front-Panel Key |
This represents a key physically located on the instrument |
|
front panel. |
Softkey |
This indicates a “softkey,” a key whose label is determined by |
|
the instrument's firmware. Softkeys are located on the |
|
display bezel. |
Screen Text |
This indicates text displayed on the instrument screen. |
8
Contents
1. Introduction |
|
The 8590 Series Analyzers Assembly-Level Repair Service Guide . . . . . . . . . . . . . . . . . . . . . |
14 |
Service Guide Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
Analyzer Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
16 |
Firmware Revision Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
18 |
Firmware Upgrade Kit Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
18 |
Reliability Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
19 |
Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
21 |
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
23 |
Test Equipment You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
23 |
When A 3335A Source Is Not Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
23 |
If There Are Abnormal Indications During Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
Periodically Verifying Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
Standard-Value Replacement Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
If You Replace or Repair an Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
25 |
2. Making Adjustments |
|
|
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 32 |
|
1a. |
Display (with four access holes in top of shield) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
33 |
1b. Display (with eight access holes in top of shield) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
36 |
|
2. Sampler Match . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
42 |
|
3. 10 MHz Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
44 |
|
4. 10 MHz Precision Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
46 |
|
5. Crystal and LC Bandwidth Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
49 |
|
6. Cal Attenuator Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
58 |
|
7. Log and Linear Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
63 |
|
8. CAL FREQ Adjustment Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
68 |
|
9. CAL AMPTD Adjustment Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
70 |
|
10. CAL YTF Adjustment Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
72 |
|
11. CAL MXR Adjustment Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
77 |
|
12. |
Second Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
79 |
13. |
Third Converter and Second IF Bandpass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
85 |
14. |
Comb Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
92 |
15. |
Frequency Response of the 8590L, 8591C, and 8591E . . . . . . . . . . . . . . . . . . . . . . . . . . . |
96 |
16. |
Frequency Response of the 8592L/94L, 8593E/94E/95E/96E, and 8594Q . . . . . . . . . . . |
106 |
17. |
Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
124 |
18. |
Modulator Offset and Gain for Option 010 or 011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
126 |
19. |
Entering External ALC Correction Constants for Option 010 or 011 . . . . . . . . . . . . . . |
129 |
20. |
Checking the External ALC for Option 010 or 011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
131 |
21. |
Correcting for External ALC Error for Option 010 or 011 . . . . . . . . . . . . . . . . . . . . . . . |
135 |
22. |
First LO Distribution Amplifier for Option 009 or 010 . . . . . . . . . . . . . . . . . . . . . . . . . . |
139 |
23. |
BITG Power Level for Option 010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
142 |
24. |
Tracking Oscillator for Option 010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
145 |
25. |
Checking the Absolute Amplitude Accuracy for Option 050 . . . . . . . . . . . . . . . . . . . . . . |
151 |
26. |
Correcting for Absolute Amplitude Accuracy for Option 050 . . . . . . . . . . . . . . . . . . . . . |
157 |
27. |
Checking the Absolute Amplitude Accuracy for Option 051 . . . . . . . . . . . . . . . . . . . . . . |
160 |
28. |
Correcting for Absolute Amplitude Accuracy for Option 051 . . . . . . . . . . . . . . . . . . . . . |
171 |
9
Contents
2a. Making Adjustments: If 3335A Source Not Available
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178 6a. Cal Attenuator Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179 7a. Log and Linear Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186 15a. Frequency Response of the 8590L, 8591C, and 8591E . . . . . . . . . . . . . . . . . . . . . . . . . .191
3. Backing Up and Reloading Correction Constants |
|
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
200 |
Backing Up Analyzer Correction Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
201 |
Analyzer Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
204 |
Reloading the Correction Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
207 |
Instrument Calibration after Reloading the Correction Constants . . . . . . . . . . . . . . . . . . . . |
209 |
4. Troubleshooting the Analyzer |
|
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
216 |
Problems at Instrument Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
219 |
Troubleshooting an Inoperative Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
221 |
Troubleshooting the A2 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
227 |
Isolating an RF, LO, IF, or Video Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
232 |
Using the Internal Service-Diagnostic Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
238 |
Troubleshooting the A16 Processor/Video Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . |
249 |
5. Troubleshooting the IF Section |
|
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
254 |
Service Equipment You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
254 |
After an Analyzer Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
255 |
IF Section Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
255 |
IF Power-Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
256 |
Troubleshooting the A15 Motherboard Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
266 |
6. Troubleshooting the RF Section |
|
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
282 |
Service Equipment You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
283 |
After an Analyzer Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
283 |
6a. 8590L, 8591C, and 8591E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
284 |
6b. 8592L/94L, 8594Q, and 8593E/94E/95E/96E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
287 |
7.Replacing Major Assemblies
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294 Service Equipment You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294 After an Analyzer Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295 Removal and Replacement Procedures in this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295 Instrument Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .296 A1 Front-Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298 A1A1 Keyboard/Front-Panel Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .302 A2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303 RF Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .308 A3 Front-End Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311
10
Contents
A7 Analog Interface Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
A8 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
A15 Motherboard and IF Extrusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
A16 Processor/Video Board and A16A1 Memory Board Assembly . . . . . . . . . . . . . . . . . . . . 330
A16 Processor/Video Board Firmware ROMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
A16A1BT1 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
A17 Memory Card Reader Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
A25 Counter-Lock Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
B1 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Rear-Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
8. If You Have A Problem |
|
Contacting Agilent Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
350 |
Check the Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
351 |
Calling Agilent Technologies Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
352 |
Returning Your Analyzer for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
355 |
9. Assembly Descriptions and Block Diagrams |
|
Assembly Descriptions and Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
358 |
RF and LO Section for 8590L, 8591E, and 8591C Spectrum Analyzers . . . . . . . . . . . . . . . |
359 |
RF and LO Section for 8592L, 8593E, 8594E, 8594L, 8594Q, |
|
8595E, and 8596E Analyzers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
365 |
IF Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
373 |
10. Analyzer Options and Block Diagrams
Analyzer Options and Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 Option Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397 Troubleshooting Analyzer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408 Tracking Generator 8593E, 8594E, 8595E, 8596E Option 010 . . . . . . . . . . . . . . . . . . . . . . 410 First LO Distribution Amplifier (LODA) 8593E, 8594E, 8594Q, 8595E, 8596E
Option 009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419 Option 190 DVB-C Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433 Option 190 DVB-C Service Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
11. Major Assembly and Cable Locations
Major Assembly and Cable Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454
12. Replaceable Parts
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 487
Standard-Value Replacement Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497
Component-Level Information Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 521
13. Softkey Descriptions
Softkey Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 554
11
Contents
14. Analyzer Messages
Interpreting Analyzer Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .614
15. Service Equipment and Tools
Service Equipment and Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .660
16. Safety and Regulatory Information
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .668 Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .668 Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .669 General Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .670 Protection from Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .672
12
1 Introduction
The 8590 Series Analyzers Assembly-Level Repair Service Guide provides the information needed to adjust and repair the 8590 E-Series and L-Series spectrum analyzers, the 8591C cable TV analyzer
and 8594Q QAM analyzer to the assembly level.
13
Introduction
The 8590 Series Analyzers Assembly-Level Repair Service Guide
The 8590 Series Analyzers Assembly-Level
Repair Service Guide
The 8590 Series Analyzers Component-Level Repair Service Guide provides component-level information for the repair of individual analyzer assemblies. The binder contains Component-Level Information Packets (CLIPs) for selected assemblies. Each CLIP contains component-level schematics, a component parts list, and illustrations for component location by reference designator. Each CLIP has its own part number which is changed whenever the part number for its related analyzer assembly is changed. A list of all CLIP part numbers for the 8590 E-Series and L-Series spectrum analyzers, 8591C cable TV analyzers, and 8594Q QAM analyzers is provided in Chapter 12 of this service guide.
Figure 1-1 8590 E-Series and L-Series Spectrum Analyzers, 8591C Cable TV Analyzers, and 8594Q QAM Analyzer
14 |
Chapter 1 |
Introduction
Service Guide Organization
Service Guide Organization
The guide is divided into the following chapters.
•Chapter 1, “Introduction,” contains information on the analyzer identification, firmware revisions and upgrades, and safety and reliability considerations.
•Chapter 2, “Making Adjustments,” contains the adjustment procedures needed to adjust the analyzer to meet its specifications.
•Chapter 2a, “Making Adjustments: 3335A Source Not Available,” contains the adjustment procedures needed to adjust the analyzer to meet its specifications when a 3335A source is not available.
•Chapter 3, “Backing Up and Reloading Correction Constants,” contains information for safe-guarding the correction data stored in the analyzer and restoring the analyzer memory.
•Chapter 4, “Troubleshooting the Analyzer,” contains information for starting to troubleshoot a analyzer failure.
•Chapter 5, “Troubleshooting the IF Section,” contains specific troubleshooting information for selected assemblies in the IF section and the A15 Motherland assembly.
•Chapter 6, “Troubleshooting the RF Section,” contains troubleshooting information for the RF and LO sections of
the 8590 E-Series and L-Series spectrum analyzer and 8591C cable TV analyzer. The information is separated by the following tabs.
•Chapter 6a, “8590L, 8591C and 8591E,” contains specific troubleshooting information for selected assemblies within the RF and LO sections of the 8590L, 8591E spectrum analyzers, and 8591C cable TV analyzers.
•Chapter 6b, “8592L/94L, 8594Q, and 8593E/94E/95E/96E,” contains specific troubleshooting information for selected assemblies within the RF and LO sections of the 8592L, 8594L, 8593E, 8594E, 8595E, 8596E spectrum analyzers, and the 8594Q QAM analyzer.
•Chapter 7, “Replacing Major Assemblies,” contains instructions for the removal and replacement of most major assemblies.
•Chapter 8, “Contacting Agilent Technologies,” contains information on how to contact Agilent Technologies and return the analyzer for repair.
•Chapter 9, “Assembly Descriptions and Block Diagrams,” contains information and block diagrams describing analyzer operation and individual assemblies.
Chapter 1 |
15 |
Introduction
Analyzer Description
•Chapter 10, “Analyzer Options and Block Diagrams,” contains information on the available analyzer options.
•Chapter 11, “Major Assembly and Cable Locations,” contains figures identifying all major assemblies and cables.
•Chapter 12, “Replaceable Parts,” contains information needed to order assemblies and component-level information for the analyzer.
•Chapter 13, “Softkey Descriptions,” contains a description of the calibration, service, and diagnostic softkeys.
•Chapter 14, “Analyzer Messages,” contains a description of the analyzer messages that are displayed when there is a problem with the analyzer.
•Chapter 15, “Service Equipment and Tools,” contains information about equipment and tools used to service the analyzer.
Analyzer Description
The 8590 E-Series and L-Series spectrum analyzers, 8591C cable TV analyzers, and 8594Q QAM analyzers provide measurement capabilities over the RF and Microwave frequency ranges.
The frequency ranges of 8590 E-Series and L-Series spectrum analyzers, 8591C cable TV analyzers, and 8594Q QAM analyzers are described below.
All 8590 E-Series spectrum analyzers, 8591C cable TV analyzers and 8594Q QAM analyzers are equipped with a memory card reader. The memory card reader allows the analyzer to use downloadable software programs. The functional “personality” of the analyzer can
also be altered using the memory card reader. This feature provides the user with one analyzer that can perform the function of other types of microwave test equipment.
Further information about the 8590 E-Series and L-Series spectrum analyzers, and the available options, is provided in Chapter 10, “Analyzer Options and Block Diagrams,” of this service guide and the 8590 E-Series and L-Series Spectrum Analyzers User's Guide. Further information about the 8591C cable TV analyzer and 8594Q
QAM analyzer is provided in the spectrum analyzer reference for your instrument. Further information about the 8594Q QAM analyzer is provided in 8594Q QAM Analyzer Spectrum Analyzer Reference User's Guide.
16 |
Chapter 1 |
|
|
Introduction |
|
|
Analyzer Description |
Table 1-1 |
8590 E-Series and L-Series Spectrum Analyzer, 8591C Cable TV |
|
|
Analyzer and 8594Q QAM Analyzer Frequency Ranges |
|
|
|
|
|
Analyzer Model |
Frequency Range |
|
|
|
|
8590L |
9 kHz to 1.8 GHz |
|
8591E |
9 kHz to 1.8 GHz |
|
8591C |
1 MHz to 1.8 GHz |
|
8592L |
9 kHz to 22.0 GHz |
|
8592L (Option 026) |
9 kHz to 26.5 GHz |
|
8593E |
9 kHz to 22.0 GHz |
|
8593E (Option 026) |
9 kHz to 26.5 GHz |
|
8594E |
9 kHz to 2.9 GHz |
|
8594L |
9 kHz to 2.9 GHz |
|
8594Q |
9 kHz to 2.9 GHz |
|
8595E |
9 kHz to 6.5 GHz |
|
8596E |
9 kHz to 12.8 GHz |
|
|
|
Chapter 1 |
17 |
Introduction
Firmware Revision Date
Firmware Revision Date
When the analyzer is first turned on, a display appears that contains the copyright date and firmware revision date. (If the analyzer has either Option 041, IB and parallel I/O, or Option 043, RS-232 and parallel I/O, the display will also contain the entries shown on the first line of the example below.)
The version of firmware installed in the analyzer is identified by the year, month, and day in the following format.
(IB: nn) or (RS232: nnnn) COPYRIGHT 1986
rev yy.mm.dd
Whenever you contact Agilent Technologies about your analyzer, be sure to provide the firmware date along with the complete serial number and option designation. This will ensure that you obtain accurate service information.
Firmware Upgrade Kit Ordering Information
There are occasions when the factory revises the analyzer firmware to correct defects or make performance improvements. When a firmware revision is needed, a service note is distributed by the factory to all Agilent Technologies service centers. The service note identifies, by serial-number prefix, the analyzers that require the latest firmware upgrade kit.
If your analyzer requires a firmware upgrade kit, it can be obtained by ordering as described in Chapter 12, “Replaceable Parts.”Instructions for the replacement of the firmware ROMs is located under “A16 Processor/Video Board Firmware ROM” in Chapter 7, “Replacing Major Assemblies,” of this guide.
18 |
Chapter 1 |
CAUTION
Introduction
Reliability Considerations
Reliability Considerations
Analyzer Input Protection
The analyzer input circuitry can be damaged by power levels that exceed the maximum safe input-level specifications. Table 1-2 through Table 1-5 provides the input specifications. To prevent input damage, these specified levels for your analyzer must not be exceeded.
The analyzer input can also be damaged by large transients. If it is likely that your analyzer will be exposed to potentially damaging transients, take whatever precautions are necessary to protect its input circuitry.
The analyzer input can easily be protected by disconnecting it from the signal source whenever it is likely that large transients will be present. When it is impractical to disconnect the analyzer, a transient-limiting device should be used.
The 11947A Transient Limiter is an analyzer accessory that protects the input circuitry from transients and accidental overloads. Contact your local Agilent Technologies sales or service office for more information about the 11947A.
Transients are often produced during electromagnetic interference (EMI) conducted emissions testing. One type of device, the line impedance stabilization network (LISN), can produce large transients when its switch position or voltage input is changed.
Chapter 1 |
19 |
Introduction
Reliability Considerations
Table 1-2 |
8590L and 8591E Spectrum Analyzer and 8591C Cable TV |
||
|
Analyzer &Maximum Safe Input Level |
||
|
|
|
|
|
|
INPUT 50W (Input |
INPUT 75W (Input |
|
|
Attenuation ³10 dB) |
Attenuation ³10 dB) |
|
|
|
|
Average Continuous Power |
+30 dBm (1 W) |
+75 dBmV (0.4 W) |
|
Peak Pulse Power |
|
+30 dBm (1 W) |
+75 dBmV (0.4 W) |
|
|
|
|
dc |
|
25 Vdc |
100 Vdc |
|
|
|
|
Table 1-3 |
8592L and 8593E Spectrum Analyzer Maximum Safe Input |
|
|
Level |
|
|
|
|
|
|
INPUT 50W (Input Attenuation |
|
|
³10 dB bands 1 through 4) |
|
|
|
Average Continuous Power |
+30 dBm (1 W, 7.1 V rms), input attenuation |
|
Peak Pulse Power |
|
³10 dB |
|
+50 dBm (100 W) for <10 ms pulse width and |
|
|
|
|
|
|
<1% duty cycle, ssfs input attenuation ³30 dB |
|
|
|
dc |
|
0 Vdc |
|
|
|
Table 1-4 |
8594E and 8594L Spectrum Analyzer and 8594Q Analyzer |
|
|
Maximum Safe Input Level |
|
|
|
|
|
|
INPUT 50W (Input Attenuation ³10 dB) |
|
|
|
Average Continuous Power |
+30 dBm (1 W, 7.1 V rms) |
|
Peak Pulse Power |
|
+50 dBm (100 W) for <10 ms pulse width and |
|
|
<1% duty cycle, input attenuation ³30 dB |
|
|
|
dc |
|
0 V (dc coupled) |
|
|
50 V (ac coupled) |
|
|
|
Table 1-5 |
8595E and 8596E Spectrum Analyzer Maximum Safe Input |
|
|
Level |
|
|
|
|
|
|
INPUT 50W (Input Attenuation ³10 dB |
|
|
above 2.75 GHz) |
|
|
|
Average Continuous Power |
+30 dBm (1 W, 7.1 V rms) |
|
Peak Pulse Power |
|
+50 dBm (100 W) for <10 ms pulse width and |
|
|
<1% duty cycle, input attenuation ³30 dB |
|
|
|
dc |
|
0 V (dc coupled) |
|
|
50 V (ac coupled) |
|
|
|
20 |
Chapter 1 |
Introduction
Adjustment Procedures
Adjustment Procedures
The following table lists the analyzer adjustments in Chapter 2 and Chapter 2a and the models that they apply to. Select the model of the analyzer being adjusted and note the adjustments marked in the analyzer model column to determine which adjustments should be performed.
Table 1-6 |
8590 E-Series and L-Series Spectrum Analyzer, 8591C Cable TV |
|||||||||||
|
|
and 8594Q QAM Analyzer Adjustment Procedures |
|
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Adjustment for Spectrum Analyzer Model: |
|||||||||
|
Adjustment Procedure Name |
|
|
|
|
|
|
|
|
|
|
|
|
8590L |
8591C |
8591E |
8592L |
8593E |
8596E |
8594E |
8594L |
8594Q |
8595E |
||
|
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
1. |
Display |
|
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Sampler Match |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3. |
10 MHz Reference |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4. |
10 MHz Precision Frequency |
|
• |
• |
|
• |
|
• |
|
• |
• |
|
|
Reference |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5. |
Crystal and LC Bandwidth Filter |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6. |
Cal Attenuator Errora |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
6a. |
Cal Attenuator Errorb |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
7. |
Log and Linear Amplifiera |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
7a. |
Log and Linear Amplifierb |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
8. |
CAL FREQ Adjustment Routine |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9. |
CAL AMPTD Adjustment Routine |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10. |
CAL YTF Adjustment Routine |
|
|
|
• |
• |
|
|
|
|
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
11. |
CAL MXR Adjustment Routine |
|
|
|
• |
• |
|
|
|
|
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12. |
Second Converter |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13. |
Third Converter and Second IF |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
Bandpass |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14. |
Comb Generator |
|
|
|
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15. |
Frequency Response of the 8590L, |
• |
• |
• |
|
|
|
|
|
|
|
|
|
8591C, and 8591Ea |
|
|
|
|
|
|
|
|
|
|
|
Chapter 1 |
21 |
Introduction
Adjustment Procedures
Table 1-6 |
8590 E-Series and L-Series Spectrum Analyzer, 8591C Cable TV |
|||||||||||
|
|
and 8594Q QAM Analyzer Adjustment Procedures |
|
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Adjustment for Spectrum Analyzer Model: |
|||||||||
|
Adjustment Procedure Name |
|
|
|
|
|
|
|
|
|
|
|
|
8590L |
8591C |
8591E |
8592L |
8593E |
8596E |
8594E |
8594L |
8594Q |
8595E |
||
|
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
15a. |
Frequency Response of the 8590L, |
• |
• |
• |
|
|
|
|
|
|
|
|
|
8591C, and 8591Eb |
|
|
|
|
|
|
|
|
|
|
|
16. |
Frequency Response of the 8592L, |
|
|
|
• |
• |
|
• |
• |
• |
• |
|
|
8593E, 8594E, 8594L, 8594Q,8595E, |
|
|
|
|
|
|
|
|
|
|
|
|
8596E |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
17. |
Time and Date |
• |
• |
• |
• |
• |
|
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
18. |
Modulator Offset and Gain for |
• |
• |
• |
|
|
|
|
|
|
|
|
|
Option 010 or 011 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
19. |
Entering External ALC Correction |
• |
• |
• |
|
|
|
|
|
|
|
|
|
Constants for Option 010 or 011 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20. |
Checking the External ALC for |
• |
• |
• |
|
|
|
|
|
|
|
|
|
Option 010 or 011 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
21. |
Correcting the External ALC Error |
• |
• |
• |
|
|
|
|
|
|
|
|
|
for Option 010 or 011 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
22. |
First LO Distribution Amplifier for |
|
|
|
|
• |
|
• |
|
|
• |
|
|
Option 009 or 010 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
23. |
BITG Power Level for Option 010 |
|
|
|
|
• |
|
• |
|
|
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
24. |
Tracking Oscillator for Option 010 |
|
|
|
|
• |
|
• |
|
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25. |
Checking the Absolute Amplitude |
|
|
• |
|
• |
|
• |
|
|
• |
|
|
Accuracy for Option 050 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
26. |
Correcting for Absolute Amplitude |
|
|
• |
|
• |
|
• |
|
|
• |
|
|
Accuracy for Option 050 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
27. |
Checking the Absolute Amplitude |
|
|
• |
|
• |
|
• |
|
|
• |
|
|
Accuracy for Option 051 |
|
|
|
|
|
|
|
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28. |
Correcting for Absolute Amplitude |
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• |
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• |
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`• |
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Accuracy for Option 051 |
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a.If a 3335A source is not available, use the alternative adjustment with the same number found in Chapter 2a , “Making Adjustments: If 3335A Source Not Available.”
b.If a 3335A source is not available, substitute this adjustment for the one with the same number found in Chapter 2 , “Making Adjustments.”
22 |
Chapter 1 |
Introduction
Safety
Safety
Familiarize yourself with the safety symbols marked on the analyzer, and read the general safety instructions and the symbol definitions given in Chapter 16 , “Safety and Regulatory Information,” before you begin the procedures in this chapter.
Test Equipment You Will Need
Refer to Chapter 1 of the calibration guide for your instrument for a list of recommended equipment for the analyzer adjustments. Any equipment that meets the critical specifications given in the table can be substituted for the recommended model.
If a 3335A Synthesizer/Level Generator is not available, see Chapter 1 of the calibration guide for your instrument for alternative recommended test equipment, accessories, and adapters.
When A 3335A Source Is Not Available
The 3335A Synthesizer Level Generator signal source has become obsolete because parts used in the manufacture of this instrument are no longer available from suppliers. To meet the need of our customers, this service guide has been revised to add new adjustments that do not use the 3335A Synthesizer Level Generator. This revision includes the addition of signal sources required to replace the 3335A, changes i to the test equipment setup illustrations, and changes in the steps required to execute the adjustments.
Since all of our customers will not need to replace their 3335A Synthesizer Level Generators immediately, the original adjustments which use the 3335A signal generator have been retained. The revisions have been incorporated in this service guide as Chapter 2a , “Making Adjustments: If 3335A Source Not Available.”
Chapter 1 |
23 |
Introduction
If There Are Abnormal Indications During Adjustment
If There Are Abnormal Indications During
Adjustment
If the indications received during an adjustment do not agree with the normal conditions given in the adjustment procedures, a fault exists in your analyzer. The fault should be repaired before proceeding with any further adjustments. Refer to the troubleshooting and repair information in Chapter 4, “Troubleshooting the Analyzer,” of this guide.
Periodically Verifying Calibration
The analyzer requires periodic verification of operation. Under most conditions of use, you should test the analyzer at least once a year with either operation verification or the complete set of performance verification tests located in the calibration guide for your instrument.
When test results show proper operation and calibration, no adjustments are necessary. However, if test results indicate that the instrument does not meet specifications, the cause should be determined and rectified. Refer to the troubleshooting information in Chapter 4, “Troubleshooting the Analyzer,” before attempting recalibration.
Standard-Value Replacement Components
Part numbers for standard-value replacement components used in the adjustment procedures are located in Chapter 12, “Replaceable Parts,” of this service guide.
24 |
Chapter 1 |
Introduction
If You Replace or Repair an Assembly
If You Replace or Repair an Assembly
If one or more analyzer assemblies has been replaced or repaired, related adjustment procedures should be done prior to verifying operation. Refer to Table 1-7 to determine which adjustment to perform after replacing or repairing an assembly. Find the assembly that has been repaired or replaced in the left-hand column. Then perform the adjustments marked across the adjustment column for that assembly. It is important that adjustments are performed in the order indicated to ensure that the instrument meets all of its specifications.
Table 1-7 |
Adjustments and Tests for Replaced or Repaired Assemblies |
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Replaced or Repaired |
Related Adjustments |
Related Performance Verification Tests |
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Assembly |
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and Adjustment |
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Routines |
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A1 Front Frame |
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CAL AMPTD |
Frequency Response |
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Residual Responses |
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A2 Display |
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Display |
Frequency Response |
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CAL AMPTD |
Residual Responses |
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A3A1 Comb Generator |
Comb Generator |
Comb Generator Frequency Accuracy |
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CAL YTF |
Frequency Response |
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Residual Responses |
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A3A2 Microwave |
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CAL FREQ |
Frequency Response |
Switch |
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CAL AMPTD |
Residual Responses |
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CAL YTF |
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A3A3 Low-Pass Filter |
CAL FREQ |
Frequency Response |
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CAL AMPTD |
Residual Responses |
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CAL YTF |
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A3A4 Second |
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CAL FREQ |
Noise Sidebands |
Converter |
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CAL AMPTD |
System Related Sidebands |
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CAL YTF |
Frequency Response |
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Other Input Related Spurious Responses |
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Spurious Response |
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Gain Compression |
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Displayed Average Noise |
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Residual Responses |
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A3A5 Input Attenuator |
CAL FREQ |
Frequency Response |
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CAL AMPTD |
Residual Responses |
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CAL YTF |
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Frequency Response |
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Chapter 1 |
25 |
Introduction
If You Replace or Repair an Assembly
Table 1-7 |
Adjustments and Tests for Replaced or Repaired Assemblies |
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Replaced or Repaired |
Related Adjustments |
Related Performance Verification Tests |
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Assembly |
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and Adjustment |
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Routines |
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A3A6 Dual Mixer or |
CAL FREQ |
Noise Sidebands |
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Low Band Mixer |
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CAL AMPTD |
System Related Sidebands |
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CAL YTF |
Frequency Response |
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CAL MXR |
Other Input Related Spurious Responses |
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Frequency Response |
Spurious Response |
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Gain Compression |
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Displayed Average Noise |
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Residual Responses |
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A3A7 YIG-Tuned |
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First LO |
Frequency Readout & Marker Count Accy |
Oscillator |
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Distribution Amplifier |
Noise Sidebands |
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for Option 009 or 010 |
System Related Sidebands |
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Residual FM Frequency Span Readout Accy |
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CAL FREQ |
Frequency Response |
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CAL AMPTD |
Other Input Related Spurious Responses |
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CAL YTF |
Spurious Response |
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Residual Responses |
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A3A8 YIG-Tuned Filter |
CAL FREQ |
Noise Sidebands System Related Sidebands |
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or A3A8 Switched |
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CAL AMPTD |
Frequency Response |
YIG-Tuned Filter |
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CAL YTF |
Other Input Related Spurious Responses |
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CAL MXR |
Spurious Response |
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Frequency Response |
Displayed Average Noise |
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Residual Responses |
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A3A9 Bandpass Filter |
CAL FREQ |
None |
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CAL AMPTD |
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A3A10 Directional |
CAL FREQ |
System Related Sidebands |
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Coupler |
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CAL AMPTD |
Frequency Response |
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CAL YTF |
Other Input Related Spurious Responses |
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Spurious Responses |
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Residual Responses |
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A3A11 Step-Recovery |
CAL FREQ |
Comb Generator Frequency Accuracy |
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Diode |
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CAL AMPTD |
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A3A12 3 dB Attenuator |
CAL FREQ |
None |
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CAL AMPTD |
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A3A13 Isolator |
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CAL FREQ |
System Related Sidebands |
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CAL AMPTD |
Frequency Response |
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CAL YTF |
Other Input Related Spurious Responses |
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Spurious Responses |
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Residual Responses |
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26 |
Chapter 1 |
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Introduction |
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If You Replace or Repair an Assembly |
Table 1-7 |
Adjustments and Tests for Replaced or Repaired Assemblies |
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Replaced or Repaired |
Related Adjustments |
Related Performance Verification Tests |
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Assembly |
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and Adjustment |
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Routines |
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A3A14 LO Distribution |
First LO |
Frequency Readout and Marker Count Accy |
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Amplifier (LODA) |
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Distribution Amplifier |
Noise Sidebands |
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for Option 009 or 010 |
System Related Sidebands |
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only |
Residual FM |
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Frequency Span Readout Accuracy |
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CAL FREQ |
Frequency Response |
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CAL AMPTD |
Other Input Related Spurious Responses |
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CAL YTF |
Spurious Response |
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Residual Responses |
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A3A15 Tracking |
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First LO |
Frequency Readout and Marker Count Accy |
Generator |
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Distribution Amplifier |
Noise Sidebands |
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for Option 009 or 010 |
System Related Sidebands |
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Residual FM |
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CAL FREQ |
Frequency Span Readout Accuracy |
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CAL AMPTD |
Frequency Response |
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CAL YTF |
Other Input Related Spurious Responses |
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BITG Power Level for |
Spurious Response |
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Option 010 |
Residual Responses |
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A3 Input Attenuator |
CAL FREQ |
Frequency Response |
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CAL AMPTD |
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A4 First Converter |
Frequency Response |
Noise Sidebands |
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CAL FREQ |
System Related Sidebands |
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CAL AMPTD |
Frequency Response |
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Spurious Response |
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Gain Compression |
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Displayed Average Noise |
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Residual Responses |
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A5 Second Converter |
Second Converter |
Noise Sidebands |
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CAL FREQ |
Residual FM |
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CAL AMPTD |
System Related Sidebands |
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Frequency Response |
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Spurious Response |
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Gain Compression |
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Displayed Average Noise |
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Residual Responses |
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A6 YIG-Tuned |
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CAL FREQ |
Noise Sidebands |
Oscillator |
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CAL AMPTD |
Residual FM |
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System Related Sidebands |
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Frequency Span Readout Accuracy |
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Frequency Response |
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Spurious Response |
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Displayed Average Noise |
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Residual Responses |
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Chapter 1 |
27 |
Introduction
If You Replace or Repair an Assembly
Table 1-7 |
Adjustments and Tests for Replaced or Repaired Assemblies |
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Replaced or Repaired |
Related Adjustments |
Related Performance Verification Tests |
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Assembly |
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and Adjustment |
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Routines |
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A7 Analog Interface |
CAL FREQ |
Frequency Readout and Marker Count Accy |
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CAL AMPTD |
Noise Sidebands |
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CAL YTF (8592L, |
Residual FM |
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8593E, 8595E, 8596E |
System Related Sidebands |
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only) |
Frequency Span Readout Accuracy |
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Sweeptime Accuracy |
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Scale Fidelity |
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Reference Level Accuracy |
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Absolute Amplitude Calibration and |
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Resolution Bandwidth Switching |
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Uncertainties |
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Frequency Response |
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A7A1 Tracking |
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Modulator Offset and |
Absolute Amplitude, Vernier, and Power |
Generator Control |
Gain for Option 010 or |
Sweep Accuracy |
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011 |
Tracking Generator Level Flatness |
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Entering External ALC |
Harmonic Spurious Outputs |
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Correction |
Non-Harmonic Spurious Outputs |
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Constants for Option |
Tracking Generator Feedthrough |
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010 or 011 Checking the |
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External ALC for Option |
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010 or 011 |
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Correcting the External |
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ALC Error for Option |
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010 or 011 |
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A8 Power Supply |
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None |
System Related Sidebands |
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Spurious Responses |
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Residual Responses |
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A9 Third Converter |
Third Converter |
Noise Sidebands |
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&Second IF Bandpass |
System Related Sidebands |
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CAL FREQ |
Absolute Amplitude Calibration and |
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CAL AMPTD |
Resolution Bandwidth Switching |
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BITG Power Level for |
Uncertainties |
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Option 010 only |
Other Input Related Spurious |
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Spurious Responses |
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Displayed Average Noise |
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Residual Responses |
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A10 LODA Control |
First LO |
Frequency Response |
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(Opt. 009) or Tracking |
Distribution Amplifier |
Absolute Amplitude, Vernier and Power |
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Generator Control |
for Option 009 or 010 |
Sweep Accuracy |
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(Opt. 010) |
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only |
Tracking Generator Level Flatness |
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CAL FREQ |
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CAL AMPTD |
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CAL YTF |
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28 |
Chapter 1 |
|
|
|
Introduction |
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|
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If You Replace or Repair an Assembly |
Table 1-7 |
Adjustments and Tests for Replaced or Repaired Assemblies |
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|
|
Replaced or Repaired |
Related Adjustments |
Related Performance Verification Tests |
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Assembly |
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and Adjustment |
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Routines |
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A11 Bandwidth |
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Crystal and IC |
Resolution Bandwidth Accuracy |
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Bandwidth Filter CAL |
Absolute Amplitude Calibration and |
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FREQ |
Bandwidth Switching Uncertainties |
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CAL AMPTD |
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A12 Amplitude Control |
CAL FREQ |
Scale Fidelity |
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CAL AMPTD |
Displayed Average Noise |
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A13 Bandwidth |
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Crystal and IC |
Resolution Bandwidth Accuracy |
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Bandwidth Filter CAL |
Absolute Amplitude Calibration and |
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FREQ |
Bandwidth Switching Uncertainties |
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CAL AMPTD |
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A14 Log Amplifier |
Log and Linear |
Scale Fidelity |
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Amplifier |
Reference Level Accuracy |
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CAL FREQ |
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CAL AMPTD |
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A15 Motherboard |
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CAL FREQ |
Complete Operation Verification |
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CAL AMPTD |
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A16 Processor/Video |
10 MHz Reference |
Reference Level Accuracy |
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A16A1 Memory |
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CAL FREQ |
Frequency Response |
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CAL AMPTD |
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CAL YTF (8592L, |
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8593E, 8595E, 8596E |
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only) |
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CAL MXR † (8592L, |
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8593E, 8595E, 8596E |
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only) |
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Cal Attenuator Error † |
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Frequency Response † |
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Time and Date |
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† These adjustments are not necessary if valid correction constants are recovered from the |
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defective A16 processor/video assembly. See the A16 processor/video board assembly replacement |
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procedure in this service guide. |
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Chapter 1 |
29 |
Introduction
If You Replace or Repair an Assembly
30 |
Chapter 1 |
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