Errata Title & Document Type: 4352B VOC/PLL Signal Analyzer Service Manual Manual Part Number: 04352-90141 Revision Date: June 2000 HP References in this Manual This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett-Packard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
Agilent 4352B VCO/PLL Signal Analyzer Service Manual SERIAL NUMBERS This manual applies directly to instruments with serial number pre x JP1KE00196 or above. For additional important information about serial numbers, read \Serial Number" in Appendix A of this Manual. Agilent Part No.
Notice The information contained in this document is subject to change without notice. This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of the Agilent Technologies . Agilent Technologies Japan, Ltd. Component Test PGU-Kobe 1-3-2, Murotani, Nishi-ku, Kobe-shi, Hyogo, 651-2241 Japan MS-DOS R is a U.S.
Printing History December 1997 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : First Edition (part number: 04352-90141) June 2000 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Second Edition (part number: 04352-90141) iii
Safety Summary The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with speci c WARNINGS elsewhere in this manual may impair the protection provided by the equipment. In addition, it violates safety standards of design, manufacture, and intended use of the instrument. The Agilent Technologies assumes no liability for the customer's failure to comply with these requirements.
Typeface Conventions Bold Italics Computer 4HARDKEYS5 NNNNNNNNNNNNNNNNNNNNNNNNNN SOFTKEYS Boldface type is used when a term is de ned. For example: icons are symbols. Italic type is used for emphasis and for titles of manuals and other publications. Italic type is also used for keyboard entries when a name or a variable must be typed in place of the words in italics. For example: copy lename means to type the word copy, to type a space, and then to type the name of a le such as file1.
Certi cation Agilent Technologies certi es that this product met its published speci cations at the time of shipment from the factory. Agilent Technologies further certi es that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institution's calibration facility, or to the calibration facilities of other International Standards Organization members.
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 O ce.
Safety Symbols General de nitions of safety symbols used on equipment or in manuals are listed below. Instruction manual symbol: the product is marked with this symbol when it is necessary for the user to refer to the instruction manual. Alternating current. Direct current. On (Supply). O (Supply). This Warning sign denotes a hazard. It calls attention to a procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in injury or death to personnel.
Document Guide Please utilize the following manuals when using the analyzer: Function Reference Explains the operations commonly used for measurement and illustrates all functions accessed from the front panel keys and softkeys. It also provides information on options and accessories available, speci cations, system performance, and conceptual information about the analyzer's features. GPIB Programming Manual Explains the basic programming methods used when remotely controlling the analyzer with GPIB.
Contents 1. General Information INTRODUCTION . . . . . . . . . . . . . ORGANIZATION OF SERVICE MANUAL . . ANALYZERS COVERED BY THIS MANUAL TABLE OF SERVICE TEST EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-1 1-3 1-4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . Warm Up Time . . . . . . . . . . . . . . . . .
Speci cation . . . . . . . . . . . . . . . . . . . . . Test Equipment . . . . . . . . . . . . . . . . . . . Procedure . . . . . . . . . . . . . . . . . . . . . . FREQUENCY TRANSIENT FREQUENCY ACCURACY TEST Description . . . . . . . . . . . . . . . . . . . . . Speci cation . . . . . . . . . . . . . . . . . . . . . Test Equipment . . . . . . . . . . . . . . . . . . . Procedure . . . . . . . . . . . . . . . . . . . . . . DC POWER VOLTAGE ACCURACY TEST . . . . . . . . . Description . . . . . . . . . . . . . . .
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . THIRD IF AMP GAIN ADJUSTMENT . . . . . . . . . . . . . . . . Required Equipment . . . . . . . . . . . . . . . . . . . . . . . Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . EEPROM WRITE-ID AND INITIAL CORRECTION CONSTANTS . . . . Required Equipment . . . . . . . . . . . . . . . . . . . . . . . Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Power Supply Troubleshooting INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . START HERE . . . . . . . . . . . . . . . . . . . . . . . . 1. Check Error Messages . . . . . . . . . . . . . . . . . . 2. Check the Fan is Rotating . . . . . . . . . . . . . . . . 3. Check the A50 SHUTDOWN LED . . . . . . . . . . . . . A50 Shutdown LED . . . . . . . . . . . . . . . . . . . 4. Check the A1 +5 VD LED . . . . . . . . . . . . . . . . Measure the A1 +5 VD Voltage . . . . . . . . . . . . . . 5.
7. Source Group Troubleshooting INTRODUCTION . . . . . . . . . . . . . . . . SOURCE GROUP TROUBLESHOOTING SUMMARY START HERE . . . . . . . . . . . . . . . . . 1. Check A6's A/D Converter . . . . . . . . . 2. Check Option 001 DC CONTROL Outputs . . 3. Bypass A70 . . . . . . . . . . . . . . . . 4. Check DC POWER/DC CONTROL Outputs . . 5. Check A3/A13 Source . . . . . . . . . . . 6. Check MOD OUT signal . . . . . . . . . . 7. Check REF OSC on A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISPLAY TESTS . . . 21: TEST PATTERN 1 22: TEST PATTERN 2 23: TEST PATTERN 3 24: TEST PATTERN 4 25: TEST PATTERN 5 SERVICE MODES MENU . BUS MEAS [ON] . . . . MISC MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CORRECTION CONSTANTS . .
42: [A6] FIXED PLL VTUNE . . 43: [A6] FN LOOP VTUNE . . . 44: [A6] PEAK DETECTOR . . . 45: [A6] GND . . . . . . . . . 46 through 49: Not Assigned . . 50: [A6] SA PATH . . . . . . . 51: [A6] MONITOR PATH . . . . Frequency Bus Node Descriptions . 0: OFF . . . . . . . . . . . . 1: [A5] 2nd LOCAL . . . . . . 2: [A5] FREQ COUNTER . . . . 3: [A5] FV CONVERTER . . . . 4 through 9: Not Assigned . . . 10: [A6] SAMPLE HOLD . . . . 11: [A6] FM FREQ . . . . . . . 12: [A6] REF LOOP . . . . . . 13: [A6] FIXED PLL . . . .
ATTEN/AMP . . . . IF GAIN . . . . . INPUT SELECT . . PLL . . . . . . . FV CALOUT on OFF FM OUT on OFF . . STATUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11. Replaceable Parts Introduction . . . . . . . Ordering Information . . Direct Mail Order System Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 11-1 11-1 11-2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . POST REPAIR PROCEDURES . . . . . . . . . . . . . . . .
Figures 1-1. 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 2-10. 2-11. 2-12. 2-13. 2-14. 2-15. 2-16. 2-17. 2-18. 2-19. 2-20. 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. 3-14. 3-15. 3-16. 3-17. 3-18. 3-19. 3-20. 3-21. 3-22. 4-1. 4-2. 4-3. Serial Number Plate . . . . . . . . . . . . . . . . . . . . Frequency Measurement Test Setup . . . . . . . . . . . . . Power Splitter Tracking Error Measurement Setup 1 . . . . . Power Splitter Tracking Error Measurement Setup 2 . . . . .
5-1. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8. 5-9. 5-10. 5-11. 5-12. 5-13. 6-1. 6-2. 6-3. 6-4. 6-5. 6-6. 7-1. 7-2. 7-3. 7-4. 7-5. 8-1. 8-2. 8-3. 8-4. 8-5. 8-6. 8-7. 8-8. 8-9. 9-1. 9-2. 9-3. 9-4. 9-5. 9-6. 9-7. 9-8. 9-9. 9-10. 9-11. 9-12. 9-13. 10-1. 10-2. 10-3. 10-4. 10-5. 11-1. 11-2. 11-3. 11-4. A50 SHUTDOWN LED Location . . . . . . . . . . . . . A1 +5 VD LED Location . . . . . . . . . . . . . . . . A2 Eight LED Locations . . . . . . . . . . . . . . . . Displayed Test Result . . . . . . . . . . . . . . . . .
11-5. 11-6. 11-7. 11-8. 11-9. 11-10. 11-11. 11-12. 11-13. 11-14. 11-15. 11-16. 11-17. 11-18. 11-19. 11-20. 11-21. 11-22. 11-23. 11-24. 11-25. 11-26. 11-27. 11-28. 11-29. 11-30. 11-31. 11-32. 11-33. 11-34. 11-35. 11-36. 11-37. 11-38. 11-39. 11-40. 11-41. 11-42. 11-43. 11-44. 11-45. 11-46. 11-47. A-1. A-2. A-3. A-4. B-1. Front Assembly Parts 3 . . . . . . Front Assembly Parts 4 . . . . . . Front Assembly Parts 5 . . . . . . Front Assembly Parts 6 . . . . . . Front Assembly Parts 7 . . . . . .
Tables 1-1. 4-1. 4-2. 4-3. 5-1. 5-2. 9-1. 11-1. 11-2. 11-3. 11-4. 11-5. 11-6. 11-7. 11-8. 11-9. 11-10. 11-11. 11-12. 11-13. 11-14. 11-15. 11-16. 11-17. 11-18. 11-19. 11-20. 11-21. 11-22. 11-23. 11-24. 11-25. 11-26. 11-27. 11-28. 11-29. 11-30. 11-31. 11-32. 11-33. 11-34. 11-35. 11-36. 11-37. 11-38. 11-39. Recommended Test Equipment . . . . . . . . . . . Recommended Adjustments and Correction Constants Default GPIB Addresses . . . . . . . . . . . . . . SG Type . . . . . . . . . . . . . . . . . . . . . .
11-40. 11-41. 11-42. 11-43. 11-44. 11-45. 11-46. 11-47. 11-48. 11-49. 12-1. A-1. A-2. A-3. A-4. A-5. B-1. GSP Board Installation . . . . . . . Post-Regulator Installation . . . . . Receiver Board and Spe Ana Board . Cables . . . . . . . . . . . . . . Output Filter ASSY . . . . . . . . DC O set (Option 001) . . . . . . . 24 Bit I/O Board . . . . . . . . . . Top Shield Plate . . . . . . . . . . BNC-BNC Adapter . . . . . . . . . Top Covers/Foot . . . . . . . . . . Post Repair Procedures . . . . . . .
1 General Information INTRODUCTION This Service Manual is a guide to servicing the 4352B VCO/PLL Signal Analyzer. The Service Manual provides information about performance testing, adjusting, troubleshooting, and repairing the 4352B. ORGANIZATION OF SERVICE MANUAL This manual consists of the major chapters listed below. The chapters are divided by tabs. This section describes the names of the tabs and the content of each chapter. Performance Tests provides procedures for performance testing the 4352B.
Replaceable Parts provides part numbers and illustrations of the replaceable assemblies and miscellaneous chassis parts, together with ordering information. It also can be used as the replacement procedure reference. Post-Repair Procedures contains the table of related service procedures. It is a table of adjustments and veri cation procedures to be performed after repair or replacement of each assembly.
ANALYZERS COVERED BY THIS MANUAL Agilent Technologies uses a two-part, ten-character serial number that is stamped on the serial number plate (see Figure 1-1) attached to the rear panel. The rst ve digits and letters are the serial pre x and the last ve digits are the su x. The rst two letters identify the country where the instrument was manufactured. The same pre x is used for all identical instruments. The pre x changes only when a change is made to the instrument.
TABLE OF SERVICE TEST EQUIPMENT The rst part of Table 1-1 lists all of the equipment required to verify, adjust, and troubleshoot the analyzer and perform the operator's check. The table also notes the use and critical speci cations of each item, and the recommended models. Equipment other than the recommended models may be substituted if the equipment meets or exceeds the critical speci cations.
Table 1-1. Recommended Test Equipment (continued) Equipment Critical Speci cations Recommended Model/Agilent Part Number Qty Use1 50 Termination Type-N (m), 50 909C Opt.012 or part of 85032B1 P Power Splitter Frequency Range: 100 kHz to 3 GHz, Output Tracking: 0.
2 Performance Tests INTRODUCTION This chapter provides information on the 4352B VCO/PLL Signal Analyzer performance tests information. These performance tests are used to verify that the 4352B performance meets its speci cations. General information about the performance tests is provided rst. Then, step by step procedures for each test are provided. Each test procedure consists of the following parts: Description: describes the test procedure. Test Equipment: describes test equipment required in the test.
Recommended Test Equipment Table 1-1 lists the equipment required for performance testing the 4352B. Other equipment may be substituted if the equipment meets or exceeds the critical speci cations given in Table 1-1.
FREQUENCY MEASUREMENT TEST Description This test measures the output frequency from the external signal generator, and veri es the frequency measurement accuracy over its entire frequency measurement range.
Note In this test, the 4352B uses the signal generator (SG#2) as the rst local oscillator. The 4352B automatically controls SG#2 via GPIB by performing the following procedures. a. Connect the GPIB cable between the 4352B and the signal generator. b. Press 4Local5, SYSTEM CONTROLLER . Then press SET ADDRESSES , ADDRESS: SG and the entry keys to set the GPIB address of the signal generator (SG#2). (The factory default setting of the signal generator address is 19.) c.
RF POWER MEASUREMENT ACCURACY TEST Description This tests measures the output level of the signal generator with/without the power ampli er, and veri es the RF power measurement accuracy.
Figure 2-2. Power Splitter Tracking Error Measurement Setup 1 b. Set the signal generator output level to 6 dBm. c. Set the output frequency of the signal generator in accordance with the following table, and record each power meter value at each frequency as PMA1(XXX) and PMB1(XXX) (where, XXX is the SG's setting frequency). SG Frequency 10 MHz 50 MHz 100 MHz 500 MHz 1 GHz 1.5 GHz 2 GHz 2.5 GHz 3 GHz Power Meter #A Value as: PMA1(10M) PMA1(50M) PMA1(100M) PMA1(500M) PMA1(1G) PMA1(1.5G) PMA1(2G) PMA1(2.
Figure 2-3. Power Splitter Tracking Error Measurement Setup 2 e. Repeat the step c except for the recording name. Use PMA2(XXX), PMB2(XXX) instead of PMA1(XXX), PMB1(XXX), respectively. f. Calculate the following formula. Note each calculated value as Track(XXX). Track(XXX)=[fPMA1(XXX) - PMB1(XXX)g - fPMA2(XXX) - PMB2(XXX)g] / 2 3. Remove the 50 termination, and connect the power splitter to the 4352B RF IN connector with a N(m)-N(m) adapter as shown in Figure 2-4.
Note Figure 2-4. RF Power Measurement Accuracy Test Setup 1 Connect the signal generator's 10 MHz frequency reference output to the 4352B EXT REF Input on the rear panel as shown in Figure 2-4. With this con guration, both the signal generators and the 4352B are phased locked to the same reference frequency to obtain a stable measurement. 4. Press 4Preset5 to initialize the 4352B. 5. Press 4Meas5, INST TYPE , INST TYPE: VCO TESTER to set the instrument type to Tester Mode. 6.
10. Set the signal generator output frequency in accordance with the following frequencies, and repeat step 8 and step 9. 10 MHz 50 MHz 100 MHz 500 MHz 1 GHz 1.5 GHz 2 GHz 2.5 GHz 3 GHz 11. Set the signal generator output frequency to 50 MHz, and adjust the signal generator output level to around -4 dBm until the power meter reading is -20 dBm 6 0.1 dB. 12.
Test Result (dB) = 4352B reading - (Power Meter reading - Track(50M)) Record the calculated test result on the Performance Test Record. 16. Turn the signal generator output OFF, and set the signal generator output level to -12 dBm, 50 MHz. Then turn the signal generator output ON. 17. Adjust the signal generator output level until the power meter reading is 10dBm 60.1 dB. 18.
C/N RATIO MEASUREMENT PHASE NOISE TEST Description This test veri es the accuracy of the Carrier/Noise ratio measurement in Tester Mode. This test uses the 10 MHz internal reference frequency on the rear panel as the carrier frequency.
6. Press 4Bw/Avg5, OFFSET FREQ , and the entry keys to set the o set frequency in accordance with the following list, and record each measurement result on the Performance Test Record.
C/N MEASUREMENT FLATNESS ACCURACY TEST Description This test veri es the atness of the Carrier/Noise ratio measurement in Tester Mode. The mixed signal generated by two signal generators is used as the signal under test (One signal generator is used to make a carrier signal, and the other is used to make a noise signal).
Note Note Figure 2-7. C/N Ratio Measurement Accuracy (Flatness) Test Setup Connect the signal generator's 10 MHz frequency reference output to the 4352B EXT REF Input on the rear panel as shown in Figure 2-8. With this con guration, both the signal generators and the 4352B are phase locked to the same reference frequency to obtain a stable measurement. In this test, the 4352B uses the signal generator (SG#1) as the rst local oscillator.
6.
C/N RATIO MEASUREMENT LINEARITY ACCURACY TEST Description This test veri es the linearity of the Carrier/Noise ratio measurement in Tester Mode. The mixed signal generated by two signal generators is used as the signal under test (One signal generator is used to make a carrier signal, and the other is used to make a noise signal).
Note Note Figure 2-8. C/N Ratio Measurement Accuracy (Linearity) Test Setup Connect the signal generator's 10 MHz frequency reference output to the 4352B EXT REF Input on the rear panel as shown in Figure 2-8. With this con guration, both the signal generators and the 4352B are phase locked to the same reference frequency to obtain a stable measurement. In this test, the 4352B uses the signal generator (SG#1) as the rst local oscillator.
6. Set the 4352B Measurement Controls as follows: Control Settings RF ATTEN = 0 dB AVERAGING: ON (AVG=16) NOISE ATTEN = 30 dB C/N APERTURE: MANUAL 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17.
FM DEVIATION TEST Description This test veri es the accuracy of the FM deviation measurement. This test uses the FM signal from function generator with an AM/FM Test Source.
Note Connect the signal generator's 10 MHz frequency reference output to both the 4352B EXT REF Input on the rear panel and the function generator EXT REF Input on the rear panel as shown in Figure 2-8. With this con guration, the signal generator, the function generator, and the 4352B are phase locked to the same reference frequency to obtain a stable measurement. Note In this test, the 4352B uses the signal generator as the rst local oscillator.
Figure 2-10. FM Deviation Accuracy Test Setup 2 d. Con rm that the 4352B reading is approximately 50 kHzrms , and note the 4352B reading as FM TEST. e. Calculate the following formula, and record the 200 kHz range test result on the Performance Test Record. Test Result (%REL) = FM TEST / FM REF * 100 10. Perform the following steps to check the 20 kHz range of the FM deviation measurement. a.
Figure 2-11. FM Deviation Accuracy Test Setup 3 b. Press 4Sense Range5, FM DEV RANGE , FM DEV RNG 200 kHz to set the FM deviation range to 200 kHz. c. Adjust the function generator's amplitude (around -8 dBm) until the 4352B reading is 80 kHzrms 61 kHzrms , and note the 4352B reading as FM REF. d. Remove the BNC cable from the FM/4 output on the AM/FM Test Source, and connect it to the FM OUTPUT on the AM/FM Test Source as shown in Figure 2-12.
f. Con rm that the 4352B reading is approximately 20 kHzrms , and note the 4352B reading as FM TEST. g. Calculate the following formula, and record the 20 kHz range test result on the Performance Test Record. Test Result (%REL) = FM TEST / FM REF * 100 11. Perform the following steps to check the 2 kHz range of the FM deviation measurement. a. Remove the BNC cable from FM output on the AM/FM Test Source, and connect it to the FM OUTPUT on the AM/FM Test Source as shown in Figure 2-13. Figure 2-13.
Figure 2-14. FM Deviation Accuracy Test Setup 6 e. Press 4Sense Range5, FM DEV RANGE , 2 kHz to set the FM deviation range to 2 kHz. f. Con rm that the 4352B reading is approximately 2 kHzrms, and note the 4352B reading as FM TEST. g. Calculate the following formula, and record the 2 kHz range test result on the Performance Test Record.
SPECTRUM MEASUREMENT RELATIVE LEVEL ACCURACY TEST Description This test veri es the relative level accuracy of the spectrum measurement in Analyzer mode. The mixed signal generated by two signal generators is used as the signal under test.
Figure 2-15. Relative Level Accuracy Test Setup Note Connect the signal generator's 10 MHz frequency reference output to the 4352B EXT REF Input on the rear panel as shown in Figure 2-8. With this con guration, both the signal generators and the 4352B are phase locked to the same reference frequency to obtain a stable measurement. Note In this test, the 4352B uses the signal generator (SG#1) as the rst local oscillator.
6. Set the 4352B Measurement Controls as follows: Control Settings RF ATTEN = 0 dB CENTER = 1 GHz SPAN = 10 MHz RES BW = 1 kHz 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Keystrokes , RF ATTEN , 405, 4x15 4Menu5, SWEEP , CENTER , 415, 4G/n5 SPAN , 415, 405, 4M/ 5 4Bw/Avg5, RES BW , 415, 4k/m5 4Sense Range5 NNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNN Set the signal generator (SG#2) output to 1 GHz, 12 dBm.
FREQUENCY TRANSIENT FREQUENCY ACCURACY TEST Description This test veri es the frequency accuracy of the Frequency Transient measurement in Analyzer mode. Speci cation Frequency Accuracy Measurement Range = RF MAX 0 RF MIN When Measurement range > 30MHz, : : : : : : : : : : : : : : : : : : : : : : : 6([Integer of fRF MAX [MHz]/192 + 1g ] 2 192 2 0.1% + 0.2 ) [MHz] When Measurement range 30MHz, When RF MAX 40MHz : : : : : : : : : 6(measurement range 2 0.
2. Press 4Preset5 to initialize the 4352B. 3. Press 4Meas5, INST TYPE , VCO ANALY to set the instrument type to Analyzer mode. NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNN 4. Press 4Meas5, RF TRANSIENT to set the measurement item to Frequency Transient. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 5. Set the output level from the signal generator (SG#2) to 0 dBm. 6. Set the signal generator (SG#2) output frequency to 880 MHz. 7.
DC POWER VOLTAGE ACCURACY TEST Description This test veri es the accuracy of the DC POWER output voltage. This test uses a multimeter to measure the actual DC POWER voltage. Speci cation DC Power Voltage Voltage Range : : : : : : : : : : : : : : : : : : : : : : : : : : 0 to +15.5 V (50 mA max.), variable in 1 mV steps Setting Accuracy @23610 C : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 6(0.
5. Press OUTPUT on OFF to output the DC POWER voltage. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6. Record the multimeter reading on the Performance Test Record. 7. Press 4DC Power5, POWER VOLTAGE , and the entry keys to set the DC POWER voltage in accordance with the following list. Subtract each DC Power voltage setting value from each multimeter reading, and record the calculated value on the Performance Test Record. 1.0 V 2.5 V 5.0 V 7.5 V 10.0 V 12.5 V 15.0 V 15.
DC CONTROL VOLTAGE ACCURACY TEST Description This test veri es the accuracy of the DC CONTROL output voltage. This test uses a multimeter to measure the actual DC CONTROL voltage. Speci cation Voltage Range : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 0 to 20 V (20 mA max.), variable in 100 V steps with option 001 : : : : : : : : : : : : : : : : : : : : : : : : : 015 to 35 V (20 mA max.), variable in 100 V steps Setting Accuracy @23610 C 015 V to 00.
4. Press 4DC Control5, CTRL VOLTAGE , 405, 4x15 to set the DC CONTROL to 0 V. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 5. Press OUTPUT on OFF to output the DC CONTROL voltage. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6. Record the multimeter reading on the Performance Test Record. 7. Press 4DC Control5, CTRL VOLTAGE , and the entry keys to set the DC CONTROL voltage in accordance with the following list.
MOD OUT LEVEL ACCURACY TEST Description This test veri es the accuracy of the MOD OUT output level. This test uses a multimeter to measure the actual MOD OUT level.
4. Press 4Mod5, MOD AMPLITUDE , 405, 4x15 to set the MOD OUT level to 0 Vrms. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 5. Press MOD OUT on OFF to output the MOD OUT level. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6. Record the multimeter reading on the Performance Test Record. 7. Press 4Mod5, MOD AMPLITUDE , and the entry keys to set the MOD OUT level in accordance with the following list.
DC POWER CURRENT MEASUREMENT ACCURACY TEST Description This test veri es the accuracy of the DC POWER current measurement function. This test uses a 300 resistor box to de ne the DC POWER current. Speci cation Current Range : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 0 to 50 mA Accuracy @23610 C : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 6(0.
4. Press 4Meas5, INST TYPE , INST TYPE: VCO TESTER to set the instrument type to Tester Mode. 5. Press DC POWER CURRENT to set the measurement item to DC Power Current. NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 6. Press 4DC Power5, POWER VOLTAGE , 405, 4x15 to set the DC POWER voltage to 0 V. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 7. Press OUTPUT on OFF to output the DC POWER voltage.
PERFORMANCE TEST RECORD Agilent Technologies 4352B VCO/PLL Signal Analyzer Serial Number Test Date Tested by C %RH Temperature Humidity Frequency Measurement Test Input Frequency 10 MHz 100 MHz 1 GHz 3 GHz Test Limit 61 kHz 61 kHz 61 kHz 61 kHz Test Result kHz kHz kHz kHz Power Measurement Accuracy Test Frequency Input Level Test Limit 10 MHz 50 MHz 100 MHz 500 MHz 1 GHz 1.5 GHz 2 GHz 2.
C/N Measurement Accuracy Test (Flatness) Carrier Frequency O set Frequency 10 MHz 01 MHz 01 kHz +1 kHz +1 MHz 010 MHz 01 MHz 01 kHz +1 kHz +1 MHz +10 MHz 1 GHz Test Limit Test Result 62.0 dB 62.0 dB 62.0 dB 62.0 dB 64.0 dB 62.0 dB 62.0 dB 62.0 dB 62.0 dB 64.0 dB Measurement Uncertainty dB dB dB dB dB dB dB dB dB dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.04 dB 60.
Spectrum Measurement Relative Level Accuracy Test Frequency @-10 dBm Frequency @-70 dBm 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 1 GHz 0.999 GHz 0.998 GHz 0.997 GHz 0.996 GHz 0.995 GHz 1.001 GHz 1.002 GHz 1.003 GHz 1.004 GHz 1.005 GHz Test Limit Test Result 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB 6 1.5 dB Measurement Uncertainty 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.15 dB 60.
DC CONTROL Voltage Test DC CONTROL Voltage Test Limit 015 V 01 V 0V 1.2 V 5V 10 V 15 V 20 V 21 V 35 V 65.0 mV 619.0 mV 62.0 mV 63.2 mV 67.0 mV 612.0 mV 617.0 mV 622.0 mV 611.0 mV 625.0 mV Test Result Measurement Uncertainty 60.367 mV (Opt.001 only) 60.014 mV (Opt.001 only) 60.001 mV 60.017 mV 60.063 mV 60.124 mV 60.367 mV 60.466 mV 60.485 mV (Opt.001 only) 60.763 mV (Opt.001 only) mV mV mV mV mV mV mV mV mV mV MOD OUT Voltage Test MOD OUT Voltage 0V 0.005 V 0.25 V 0.5 V 0.75 V 1V Test Limit 61.
3 Adjustments and Correction Constants Introduction This chapter describes the Adjustments and Correction Constants procedures required to ensure that the 4352B VCO/PLL Signal Analyzer is within its speci cations. These adjustments should be performed along with periodic maintenance to keep the analyzer in optimum operating condition. The recommended calibration period is 24 months.
Required Equipment Table 1-1 lists the equipment required to perform the Adjustments and the Correction Constants procedures described in this chapter. Use only calibrated test equipment when adjusting the analyzer. If the recommended test equipment is not available, equipment whose speci cations are equal to, or surpasses those of the recommended test equipment may be used. Adjustment Program The adjustment program must be used to adjust the 4352B and to update the correction constants of the 4352B.
Warm-up for Adjustments and Correction Constants Warm-up the analyzer for at least 30 minute before performing any of the following Adjustments and Correction Constants procedures to ensure proper results and correct instrument operation. Instrument Cover Removal To gain access to the adjustment components, be careful when removing the top cover and the side covers.
Preparation for Using the Adjustment Program Correction Constants are updated using the following procedure: 1. Connect the equipment as shown in Figure 3-1 Note Figure 3-1. Updating Correction Constants Setup Press 4Local5, ADDRESSABLE ONLY to set the 4352B to the addressable only mode. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 2. 3. 4. 5. 6. Run Microsoft Windows. Make the directory c:nvee4352b in your c: drive using the File Manager. Put the adjustment program disk in the a: drive (3.
Figure 3-2. 4352B Adjustment Program Basic Menu 10. Click on START. GPIB Address menu will be displayed. Choose the model number of your test equipment. Set the GPIB address and time for time out for each item. Then Click on OK. 11. The Setup Menu will be displayed as shown in Figure 3-3. Click on OK. If you want to save to a di erent drive or directory, change the drive letter and path (default is c:nvee4352b), and click on OK.
Figure 3-3. Setup Menu 12. The Calibration Factor Entry Menu for an 8482A will be displayed. Edit the reference calibration factor and the calibration factor to match your power sensor. Then click on OK. 13. The Serial Number Entry Menu will be displayed. Enter the serial number, and click on If OK, Push here! . 14. The list Box Menu will be displayed as shown in Figure 3-4. Choose the adjustment items using the mouse. Click on OK to start the adjustment procedures.
Figure 3-4.
REFERENCE FREQUENCY ADJUSTMENT The purpose of this procedure is to adjust the 40 MHz reference oscillator frequency. Required Equipment Frequency Counter : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 5334B BNC cable, 122 cm : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : PN 8120-1840 Procedure 1.
Figure 3-6.
THIRD MIXER FEEDTHROUGH ADJUSTMENT The purpose of this procedure is to minimize the leakage of the 3rd mixer. Required Equipment None Procedure 1. Run the HP VEE adjustment program and display the list box menu. 2. Click on ADJ 3MixFdThru to choose the Third Mixer Feedthough Adjustment in the list box menu. Then click on OK. 3. Follow the adjustment program instructions to adjust the third mixer feedthough. Figure 3-7 shows the adjustment location. Figure 3-7.
THIRD IF AMP GAIN ADJUSTMENT The purpose of this procedure is to maximize the dynamic range of the 3rd IF Ampli er gain. Required Equipment Function Generator : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 3325B BNC cable, 122 cm, 2 ea. : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : PN 8120-1840 Procedure 1.
Figure 3-9.
EEPROM WRITE-ID AND INITIAL CORRECTION CONSTANTS The purpose of this procedure is to write the ID and initial correction constants data into EEPROM when replacing a defective A1 CPU or EEPROM with new one. Required Equipment None Procedure 1. Run the HP VEE adjustment program and display the list box menu. 2. Click on WRITE ID and CC INIT to choose the WRITE-ID and Initial Correction Constants in the list box menu. Then click on OK. 3.
CRYSTAL FILTER FREQUENCY RESPONSE CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the crystal lter frequency response. Required Equipment Function Generator : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 3325A BNC cable, 122 cm, 2 ea.
FV CONVERTER CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the F-V Converter for FM Deviation and RF Transient measurements.
DC POWER VOLTAGE CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the DC POWER output voltage.
DC CONTROL VOLTAGE CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the DC CONTROL output voltage.
MOD OUT LEVEL CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the MD OUT voltage.
DC POWER CURRENT CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the DC POWER current measurement.
RF POWER LINEARITY CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the linearity of RF POWER measurement.
Caution Figure 3-17. RF Power Linearity Correction Constants Setup 2 To prevent any damage to the 4352B from large input levels, turn the power ampli er o immediately performing this procedure.
RF POWER FLATNESS CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the atness of RF POWER measurement.
SPECTRUM MEASUREMENT CORRECTION CONSTANTS The purpose of this procedure is to obtain the correction constants that correct the absolute level of the spectrum measurement. Required Equipment Signal Generator (RF,SG#1) : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 8664A/8665B/8753D Signal Generator (Lo,SG#2) : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 8664A/8665B Power Meter, 2 ea.
Figure 3-19. Spectrum Measurement Correction Constants Setup 4. After updating these correction constants, perform the following procedures to verify the the absolute amplitude accuracy of the spectrum measurement. Note The following veri cation is performed without the adjustment program. 5. Connect the power sensor #A to the power meter #A. Calibrate the power meter #A for the power sensor #A. Set the power meter #A's display unit of the power meter to dBm.
Figure 3-20. Power Splitter Tracking Error Measurement Setup 1 b. Set the signal generator output level to 6 dBm. c. Set the output frequency of the signal generator in accordance with the following table, and record each power meter value at each frequency as PMA1(XXX) and PMB1(XXX) (where, XXX is the SG's setting frequency). SG Frequency 10 MHz 80 MHz 800 MHz 3 GHz Power Meter #A Value as: PMA1(10M) PMA1(80M) PMA1(800M) PMA1(3G) Power Meter #B Value as: PMB1(10M) PMB1(80M) PMB1(800M) PMB1(3G) d.
Figure 3-21. Power Splitter Tracking Error Measurement Setup 2 e. Repeat the step c except for the name recorded. Use PMA2(XXX), PMB2(XXX) instead of PMA1(XXX), PMB1(XXX), respectively. f. Calculate the following formula. Note each calculated value as Track(XXX). Tack(XXX)=[fPMA1(XXX) - PMB1(XXX)g - fPMA2(XXX) - PMB2(XXX)g] / 2 7. Connect the test equipment as shown in Figure 3-22.
Note Note Figure 3-22. Absolute Amplitude Measurement Accuracy Test Setup Connect the signal generator's 10 MHz frequency reference output to the 4352B EXT REF Input on the rear panel as shown in Figure 3-22. With this con guration, both the signal generators and the 4352B are phased locked to the same reference frequency to obtain a stable measurement. In this test, the 4352B uses the signal generator (LO,SG#2) as the rst local oscillator.
10. Set the 4352B controls as follows: Control Settings Meas.mode: Spectrum RF ATTEN = 0 dB SPAN = 10 kHz RBW = 1 kHz AVERAGING: ON (AVG=16) Keystrokes 4Meas5, SPECTRUM 4Sense Range5, RF ATTEN , 405, 4x15 4Menu5, SWEEP , SPAN , 415, 405, 4k/m5 4Bw/Avg5, RES BW , 415, 4k/m5 4Bw/Avg5, AVERAGING on OFF NNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNN NNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 11.
4 Overall Troubleshooting INTRODUCTION This chapter describes overall troubleshooting summary and provides a procedure to determine whether the analyzer is faulty, or not. The procedure is performed rst in the troubleshooting section of this manual. TROUBLESHOOTING SUMMARY The troubleshooting strategy of this manual is based on a veri cation (rather than symptomatic) approach.
Figure 4-1.
START HERE A system failure can be caused by a problem in the analyzer and its accessories or external to the analyzer (in a peripheral or in programming). To verify the operation of the analyzer alone, perform the following procedure. 1. Disconnect everything from the analyzer: GPIB cable, and RF cables, etc. 2. Perform the INSPECT THE POWER ON SEQUENCE in this chapter. 3. Perform the OPERATOR's CHECK in this chapter. 4. Perform the PERFORMANCE TEST FAILURE TROUBLESHOOTING in this chapter. 5.
INSPECT THE POWER ON SEQUENCE Check the Fan Turn the analyzer power on. Inspect the fan on the rear panel. The fan should be rotating and audible. If case of unexpected results, check AC line power to the analyzer. Check the fuse (rating listed on the rear panel). Check the line voltage setting. For setting the line voltage, see the Power Requirements in Appendix B. If the problem persists, continue with the Power Supply Troubleshooting chapter.
OPERATOR'S CHECK The Operator's Check veri es that the analyzer is functioning properly. This is an excellent test to begin troubleshooting measurement problems. When you want to test the individual analyzer speci cations, perform the performance tests in accordance with the Chapter 2 in this manual.
8. Remove the BNC cable from the DC POWER connector, and connect the BNC cable to the DC CONTROL connector. 9. Press 4DC Control5, CTRL VOLTAGE , 425, 405, 4x15 to set the DC CONTROL voltage to 20 V. Press OUTPUT on OFF to activate the dc output. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 10. Con rm that the multimeter reading value is 20 V622 mV. If it fails, go to the Source Group Troubleshooting Chapter. 11.
Figure 4-3. Receiver Group Check Setup 2. Check RF POWER measurement. a. Press 4Preset5, 4Meas5, INST TYPE , INST TYPE: VCO TESTER , MEAS: RF POWER . NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN b. Con rm the reading value is within 2.5 dBm 6 1 dB. Record the result (pass or fail) as RESULT(RF). 3. Check FREQUENCY measurement. a. Press 4Meas5, FREQUENCY . 4Sense Range5, FREQ RES: 64 kHz .
f. Con rm the reading value is equal to, or greater than 140 dBc. Record the result (pass or fail) as RESULT(CN(100k)). g. If one or more tests fail, note all test results, and go to the Receiver Group Troubleshooting Chapter. 6. Check the FM Deviation Calibration. a. Press 4Trigger5, TRIGGER: HOLD to hold the measurement. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN b. Press 4Meas5, FM DEVIATION , 4Menu5, FM DEV CAL , EXECUTE DEV CAL to perform the FM Deviation Calibration.
PERFORMANCE TESTS FAILURE TROUBLESHOOTING Perform the following procedure sequentially when any performance tests fail. Perform Adjustments and Correction Constants Table 4-1 gives the recommended adjustments and correction constants when a performance test fails. If a performance test fails, you should perform the corresponding adjustments or correction constants function as shown in Table 4-1. Table 4-1.
TROUBLESHOOTING GPIB SYSTEM Check the analyzer's GPIB functions with a known working passive peripheral (like a printer) or the recommended signal generator. Check the GPIB system with the signal generator The 4352B is normally used with the following recommended signal generator as the 4352S VCO/PLL Signal Test System. The signal generator is controlled by the 4352B via GPIB cable automatically. Perform the following procedures to check the GPIB system with the signal generator.
Check the External Controller If unexpected operations appear when controlling the analyzer with an external controller, perform the following checks to verify the problem is not within the controller. Compatibility, must be HP 9000 series 200/300, see the controller and the BASIC system manuals. GPIB interface hardware must be installed in the controller, see the controller and the BASIC system manuals. I/O and GPIB binaries loaded, see the BASIC system manuals. Select code, see the BASIC system manuals.
5 Power Supply Troubleshooting INTRODUCTION Use this procedure only if you have read Troubleshooting, and you believe the problem is in the power supply. The procedure is designed to let you identify the bad assembly within the power supply functional group in the shortest possible time.
START HERE 1. Check Error Messages Turn the analyzer power on. If one of error messages listed below appears on the display, follow the instruction of the displayed error message. If no error message is displayed, continue with the next Check the Fan is Rotating. Error Messages POWER FAILED ON - - - Instruction One or some of A2 power supplies, +15 V, +8.5V, +5.3 V, +5 V, -5 V, -15 V are displayed in - - - of the message.
If the A50 SHUTDOWN LED is o , check the cable connection between A50J2 and A2J4. If the connection is good, continue with the FIND OUT WHY THE A50 SHUTDOWN LED IS OFF in this chapter. If the A50 SHUTDOWN LED is on, continue with the Check the A1 +5 VD LED in this procedure. Figure 5-1. A50 SHUTDOWN LED Location A50 Shutdown LED The A50 SHUTDOWN LED turning o indicates some of A50 power supply is shut down by the A50 shutdown circuitry.
4. Check the A1 +5 VD LED a. Remove the analyzer's bottom cover. b. Turn the analyzer power on. c. Look at the +5 VD LED. The +5 VD LED location on A1 CPU is shown in Figure 5-2. The LED is normally on. If the +5 VD LED is o , continue with the FIND OUT WHY THE A1 +5 VD LED IS NOT ON STEADILY in this chapter. If the +5 VD LED is on, the +5 VD power supply is veri ed with 95% con dence level. Continue with the Check A2 Seven LEDs in this procedure.
Figure 5-3. A2 Eight LED Locations 6. Run the Internal Test 4: A2 POST REGULATOR The internal test 4: A2 POST REGULATOR veri es the A2 post-regulator. Perform the following procedure to check the A2 post-regulator. The internal test 4 is described in the next Internal Test 4: A2 POST REGULATOR. Press 4System5, SERVICE MENU , TESTS , 445, 4x15, EXECUTE TEST to execute the internal test 4: A2 POST REGULATOR. After the test completed, the test result is displayed as shown in Figure 5-4.
b. Continue with the TROUBLESHOOT A2 POST-REGULATOR in this chapter. In particular, check the faulty power supply. Internal Test 4: A2 POST REGULATOR The internal test 4: A2 POST REGULATOR is a built-in diagnostics test. The test checks all A2 power supply voltages within the limits using the DC BUS and the A/D converter on the A6 receiver IF. If a power supply failure is found, the analyzer stops the test process and displays the test result as shown in Figure 5-4.
FIND OUT WHY THE FAN IS NOT ROTATING If the fan is not rotating, the problem may be in the A40 pre-regulator, the A50 DC-DC Converter, the A2 post-regulator, or the fan. 1. Check the Line Voltage, Selector Switch Setting, and Fuse Check the main power line cord, line fuse, and actual line voltage to see that they are all correct. Figure 5-5 shows how to remove the line fuse, using a small at-bladed screwdriver to pry o the fuse holder.
FIND OUT WHY THE A50 SHUTDOWN LED IS OFF Use this procedure when the fan is rotating. If the fan is rotating, the A50 SHUTDOWN LED turning o indicates the A50 shutdown circuit is protecting the +5 VD power supply from the over voltage condition. The +5 VD power line may be shorted with one of power lines higher than +5 V. The problem may be in the A50 DC-DC Converter, the A2 post-regulator, and any of assemblies obtaining the power from +5 VD supply and the higher power supplies. 1.
FIND OUT WHY THE A1 +5 VD LED IS NOT ON STEADILY If the +5 VD LED is not on steadily, the +5 VD line voltage is missing or is not enough to power the analyzer. The problem may be in the A40 pre-regulator, the A50 DC-DC Converter, the A1 CPU, and any of assemblies obtaining the power from +5 VD supply. 1. Check the A40 Pre-Regulator a. b. c. d. Turn the analyzer power o . Disconnect a cable form the A50J1. The A50J1 location is shown in Figure 5-6. Turn the analyzer power on.
3. Disconnect Cables on the A1 CPU a. Turn the analyzer power o . b. Disconnect cables from the A1 CPU's connectors, J10, J11, J12, J13, J14, J16, and J17. Don't disconnect the A1J15. The connector locations are shown in Figure 5-7 Figure 5-7. A1 CPU Connector Locations c. Turn the analyzer power on. Look at the A1 +5 VD LED. If the LED is still o , the A1 CPU is probably faulty. Replace the A1 CPU. If the LED goes on, the A1 CPU is veri ed. Continue with the next step. d. Turn the analyzer power o .
c. Reinstall one of the removed assemblies at a time. Turn the analyzer power on after each is installed. The assembly that turns the A1 +5 VD LED on is the most probable faulty assembly. Replace the assembly.
TROUBLESHOOT THE FAN AND THE A50 DC-DC CONVERTER Perform the following procedure to troubleshoot the fan and the A50 DC-DC Converter. 1. Troubleshoot the Fan a. b. c. d. Turn the analyzer power o . Disassemble the rear panel. Remove the fan power cable from the Motherboard A20J18. Connect a DC power supply, a 10 k resistance, and a oscilloscope to the fan power cable using appropriate wires as shown in Figure 5-8. Figure 5-8. Fan Troubleshooting Setup e. Turn the DC power supply on.
2. Troubleshoot the A50 DC-DC Converter Figure 5-9. A50 DC-DC Converter Troubleshooting Setup a. Turn the analyzer power o . b. Disconnect cables from the A50J2 and A50J3. The connector locations are shown in Figure 5-9 c. Connect the pulse generator to the A50J2 as shown in Figure 5-9. The pulse generator is used to feed the substitute of the FAN LOCK signal to the A50 DC-DC converter. This purposes not to shut down the A50 DC-DC converter. d. Turn the pulse generator power on.
Table 5-1. A50 Power Supplies Supply Connector Pin GND Connector Pin +5 VD A50J3 Pin 1, 2, and 3 A50J3 Pin 4, 5, and 6 A50J2 Pin 3 and 4 -18 V A50J2 Pin 1 A50J2 Pin 3 and 4 +18 V A50J2 Pin 2 A50J2 Pin 3 and 4 +7.8 V A50J2 Pin 5 -7.8 V A50J2 Pin 6 A50J2 Pin 3 and 4 A50J2 Pin 10 +24 V A50J2 Pin 8 Range +4.6 V to +5.7 V -14.0 V to -27.0 V 14.0 V to 27.0 V 7.0 V to 9.0 V -6.0 V to -12.0 V 22.0 V to 27.0 V If any of the power supply voltages are out of the limits, replace the A50 DC-DC Converter.
TROUBLESHOOT A2 POST-REGULATOR Use this procedure when the fan is rotating and the A50 SHUTDOWN LED turns on. If one or some of the A2 eight LEDs are not on steadily, the corresponding A2 power supply voltages, +8.5 V, +15 V, +5 V, +5 V(AUX), +5.3 V, -15 V, -5 V are missing or are not enough to power the analyzer. The problem may be in the A40 pre-regulator, the A50 DC-DC Converter, the A2 post-regulator, and any of assemblies obtaining the A2 post-regulator. 1.
g. Turn the pulse generator power on. Set the controls as follows: Wave Form Square Frequency Approximately 30 Hz Amplitude +7.8 V h. Turn the analyzer power on. i. Measure the A2 output voltages at the A2J3 pins using a voltmeter with a small probe. See Figure 5-10 and Table 5-2 for the power supplies, A2J3, and the limits. Table 5-2. Power Supplies on A2 Post-Regulator Supply Connector Pin +22 V J3 Pin 8 J3 Pin 4 +15 V(AUX) +15 V J3 Pin 31 +8.5 V J3 Pin 25A +5.
Figure 5-11.
Figure 5-12.
Figure 5-13.
6 Digital Control Troubleshooting INTRODUCTION Use this procedure only if you have followed the procedures in the Troubleshooting chapter and believe the problem to be in the digital control group. This procedure is designed to let you identify the bad assembly within the digital control group in the shortest possible time. Whenever an assembly is replaced in this procedure, refer to the Table of Related Service Procedures in the Post-Repair Procedures chapter of this manual.
Figure 6-1.
A1 CPU Replacement When you replave a faulty A1 CPU with a new one, remove the EEPROM from the faulty A1 and mount the EEPROM on the replacement A1. In the EEPROM, the correction constants data is stored after performing the Adjustment and Correction Constants procedures described in the chapter 2. The data may be valid for the new A1 CPU. Figure 6-2.
FIRMWARE INSTALLATION No rmware is installed in new A1 CPU assembly. When you replace a faulty A1 CPU with a new one, perform the following steps to install the rmware into the A1 CPU. Ordering the Firmware Diskette A rmware diskette (3.5 inch) that contains the analyzer's rmware is required for the rmware installation. If you do not have a Firmware Installation Kit, you must order one.
START HERE 1. Check the Power On Sequence See the INSPECT THE POWER ON SEQUENCE in the chapter 4 for checking the Power On Sequence. Check the A1 Eight LEDs There are eight LEDs on the A1 CPU. These LEDs should be in the pattern shown in Figure 6-4 at the end of the power on sequence. Perform the following procedure to check the A1 eight LEDs. a. Turn the analyzer turn o . b. Remove the bottom cover of the analyzer. c. Turn the analyzer power on. d. Look at the A1 eight LEDs.
Check Error Messages Turn the analyzer power on. Check that no error message appears on the LCD. If no error message is displayed, continue with the Check A1 DRAM and Flash Memory in this START HERE section. If one of error messages listed below is displayed, follow the instruction described below. For any other message, see the Error Messages in the Messages Chapter.
3. Check the A1 DRAM and Flash Memory The A1 DRAM and ash memory are tested in sequence to access the bootloader menu. For the bootloader menu, see the Service Key Menus chapter. Perform the following procedure to verify the A1 DRAM and ash memory. a. Turn the analyzer power o . b. Push the two keys 4DC Control5 and 4Preset5. While keeping the two keys pushed down, turn the analyzer power on. c. Wait for the display shown in Figure 6-5 to appear on the LCD. d.
4. Check the A1 Volatile Memory a. Turn the analyzer power on. b. Press 4System5, SERVICE MENU , TESTS , 425, 4x15, EXECUTE TEST to run the internal test 2: A1 VOLATILE MEMORY. c. Check that no error message displayed. At the end of this test, the analyzer returns the control settings to their default values (power on reset). If the test fails, the analyzer displays an error message for a few seconds before setting the defaults. If no error message is displayed, the A1 volatile memories are veri ed.
7. Check the A32 I-BASIC Interface and the mini-DIN Keyboard Perform this procedure to verify the A32 I-BASIC interface assembly on the rear panel. The mini-DIN external keyboard is connected to the A32 I-BASIC I/O connector, and is used to develop programs. If the mini-DIN keyboard of the I-Basic is not working, perform the following procedure to verify the mini-DIN keyboard. Press 4Preset5, 4System5, SERVICE MENU , TESTS , 415, 4x15, EXECUTE TEST to run the internal test 1: A1 CPU.
TROUBLESHOOT THE A51 GSP and A52 LCD Use this procedure when the LCD not acceptable, not bright or not focused. 1. Run the Internal Test 3: A51 GSP The A51 GSP can be checked using the internal test 3: A51 GSP. If the test fails, a few beeps will sound at the end of test. Then the analyzer returns the control settings to the power-on default setting values. a. Press 4Preset5, 4System5, SERVICE MENU , TESTS , 435, 4x15, EXECUTE TEST to run the internal test 3. b. Check the beeps at the end of the test.
7 Source Group Troubleshooting INTRODUCTION Use these procedures only if you have read the Overall Troubleshooting chapter and you believe the problem is in the source group. This procedure is designed to let you identify a bad assembly within the source group in the shortest possible time. Whenever an assembly is replaced in this procedure, refer to the Post-Repair Procedures chapter. Figure 7-1 shows a simpli ed block diagram of the source group.
SOURCE GROUP TROUBLESHOOTING SUMMARY This overview summarizes the sequence of checks included in this chapter. The source group troubleshooting ow is shown in Figure 7-2. Figure 7-1.
Figure 7-2.
START HERE 1. Check A6's A/D Converter First, the A6's A/D Converter is veri ed because the internal tests use the A/D Converter to check voltages at DC bus nodes for the source group. Perform the following steps to troubleshoot the source group. 1. Press 4Preset5, 4System5, SERVICE MENU , SERVICE MODES , BUS MEAS [OFF] , DC BUS [OFF] , 445, 405, 4x15 to select DC BUS to 40: AD VREF. 2. Press BUS MEAS on OFF to activate DC BUS function.
4. Press CTRL VOLTAGE , 4-5, 415, 455, 4x15 to set the DC CONTROL voltage to -15 V. Press OUTPUT on OFF to output the DC CONTROL source. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 5. Con rm that the multimater reading value is -15 V65 mV 6. Press MAX CTRL VOLTAGE , 435, 455, 4x15 to set the maximum DC CONTROL voltage to 35 V. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 7. Press CTRL VOLTAGE , 435, 455, 4x15 to set the DC CONTROL voltage to 35 V.
Figure 7-4. DC POWER Output Test Setup 2. Set the multimeter to the DCV measurement mode. 3. Press 4Preset5, 4DC Power5, POWER VOLTAGE , 415, 455, 4.5, 455, 4x15 to set the DC POWER voltage to 15.5 V. Press OUTPUT off ON to output the DC POWER source. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 4. Con rm that the multimeter reading value is 15.5 V 6 33 mV. If it fails, go to the Check A3/A13 Source. If it passes, continue with the next step. 5.
5. Check A3/A13 Source Perform the following steps to con rm the A3/A13 Source by using the DC BUS function. 1. Make an OPEN condition at both DC POWER and DC CONTROL connectors. 2. Perform the following steps to check the DC-DC Converter on the A13. a. Press 4Preset5, 4System5, SERVICE MENU , SERVICE MODES , BUS MEAS [OFF] , DC BUS [OFF] , 425, 405, 4x15, BUS MEAS on OFF . Con rm that the marker reading value on the upper right corner is 2.0 U 6 0.2 U. Record the result (pass or fail) as RESULT(20). b.
6. Check MOD OUT signal Perform the following steps to con rm the MOD OUT signal. 1. Connect the multimeter as shown in Figure 7-5. Figure 7-5. MOD OUT Signal Test Setup 2. Set the multimeter to the Synchronously Sub-sample AC voltage measurement mode (ACV, SETACV SYNC). 3. Press 4Preset5, 4Mod5, MOD AMPLITUDE , 415, 4x15 to set the modulation amplitude to 1 Vrms. Press MOD OUT off ON to output the modulation signal.
8 Receiver Group Troubleshooting INTRODUCTION Use these procedures only if you have read the Overall Troubleshooting chapter, and you believe the problem is in the receiver group. These procedures are designed to let you identify the bad assembly within the receiver group in the shortest possible time. Whenever an assembly is replaced in this procedure, refer to Post Repair Procedures chapter in this manual. The procedures isolate the faulty assembly by using the 4352B service functions.
Figure 8-1. Receiver Group Block Diagram RECEIVER GROUP TROUBLESHOOTING SUMMARY This overview summarizes the sequence of checks included in this chapter. The receiver group troubleshooting ow is shown in Figure 8-2.
Figure 8-2.
START HERE 1. Check the Rear Panel Output signals (40MHz Output/INT REF OUTPUT) Perform the following steps to check the 40 MHz Output/INT REF OUTPUT reference signals generated from the REF OSC on the A6 spectrum analyzer. 1. Connect the spectrum analyzer to the 40 MHz Output connector using BNC cable as shown in Figure 8-3. Figure 8-3. 40MHz Output/INT REF OUTPUT Signals Test Setup 2. Con rm that the output spectrum is 40 MHz @ 11 dBm 61dB. If it fails, replace the A6 spectrum analyzer assembly.
3. 4. 5. 6. 7. 8. If it passes, continue with the next step. Press 445, 415, 4x15 to set the DC BUS to 41 [A6] REF LOOP VTUNE. Con rm that the marker reading value at the upper right corner is 1.1 U 6 0.05 U. If it fails, replace the A6 spectrum analyzer assembly. If it passes, continue with the next step. Press 445, 425, 4x15 to set the DC BUS to 42 [A6] FIXED PLL VTUNE. Con rm that the marker reading value at the upper right corner is within the range of 0.4 U to 1.5 U.
Figure 8-4. A6 Peak Detector Test Setup 17. Press 4Preset5, 4System5, SERVICE MENU , SERVICE MODES , BUS MEAS [OFF] , DC BUS [OFF] , 445, 445, 4x15, BUS MEAS on OFF to set the DC BUS to 44 [A6] PEAK DETECTOR. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 18.
25. Press 415, 425, 4x15 to set the FREQ BUS to 12 [A6] REF LOOP. 26. Con rm that the marker reading value is within the range of 39.6 mU to 40.4 mU. If it fails, replace the A6 spectrum analyzer assembly. If it passes, continue with the next step. 27. Press 415, 435, 4x15 to set the FREQ BUS to 13 [A6] FIXED PLL. 28. Con rm that the marker reading value is within the range of 198 mU to 202 mU. If it fails, replace the A6 spectrum analyzer assembly. If it passes, continue with the next step. 29.
13. Press PLL , AUTO CTRL ON off to set AUTO CTRL to OFF. NNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 14. Press SPOT FREQ , 425, 4.5, 455, 485, 4M/ 5 to set the spot frequency to 2.58 MHz. NNNNNNNNNNNNNNNNNNNNNNNNNNNNN 15. Con rm that the marker reading value at the upper right corner is 1.5000 U 6 0.0001 U. If it fails, replace the A5 2nd PLL assembly. If it passes, continue with the next step. 16.
4. Check Measurement Functions Perform the following steps to check the receiver group's measurement functions by using the 40MHz Output/INT REF OUTPUT signals, and especially to con rm that the A7 power divider/A9 peak detector is working properly. Note This is the same procedure as described in OPERATOR'S CHECK. If you have already done the OPERATOR'S CHECK, go to the step 6 of this procedure. 1. Connect the two BNC Cables as shown in Figure 8-5. Figure 8-5. Measurement Functions Test Setup 2.
5. Check C/N ratio measurement. a. Press 4Meas5, CARRIER/NOISE , 4Bw/Avg5, OFFSET FREQ , 415, 4k/m5. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN b. Con rm that the reading value is equal to, or greater than 100 dBc. Record the result (pass or fail) as RESULT(CN(1k)). c. Press OFFSET FREQ , 415, 405, 4k/m5. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN d. Con rm that the reading value is equal to, or greater than 130 dBc. Record the result (pass or fail) as RESULT(CN(10k)). e.
Figure 8-6. A10 Output Test Setup 1 3. Remove the top cover, and the shield plate. 4. Remove the \J" labeled cable connected to the A5. Connect the BNC cable with the SMB(m)-BNC(f) adapter between the \J" cable and the spectrum analyzer as shown in Figure 8-7. Figure 8-7. A10 Output Test Setup 2 5.
SPAN 100 kHz RBW 1 kHz REF LEVEL 0 dBm 6. Turn the 4352B power on. 7. Set the RF attenuator according to the following table by pressing 4Sense Range5, RF ATTEN , and entry keys, and record each 30 MHz peak value of each RF attenuator setting of the spectrum analyzer as LEVEL(0) through LEVEL(25). NNNNNNNNNNNNNNNNNNNNNNNNNN RF ATTEN Record peak value @ 30MHz as: 0 dB LEVEL(0) 5 dB LEVEL(5) 10 dB LEVEL(10) 15 dB LEVEL(15) 20 dB LEVEL(20) 25 dB LEVEL(25) 8.
Figure 8-8. FM Deviation Residual FM Test Setup 2. Press 4Preset5 to initialize the 4352B. 3. Press 4Meas5, INST TYPE , INST TYPE: VCO TESTER , FM DEVATION to set the measurement item to FM Deviation in Tester mode. 4. Press 4Sense Range5, FM DEV RANGE , 2kHz to set the FM Deviation range to 2 kHz. NNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNN 5.
Figure 8-9. Frequency Transient Measurement Test Setup 2. Press 4Preset5, 4Meas5, INST TYPE , VCO ANALY , RF TRANSIENT to set the measurement function to FREQUENCY TRANSIENT. 3. Press 4Sense Range5, RF TRANS MAX FREQ , 435, 405, 4M/ 5, RF TRANS MIN FREQ , 415, 405, 4M/ 5, 4Menu5, MARKER .
9 Service Key Menus INTRODUCTION The service key menus are used to test, verify, adjust, and troubleshoot the analyzer. They are also used to install and update the rmware in the analyzer. The service key menus consist of several menus that are accessed through the service menu and the Bootloader menu as shown in Figure 9-1. The service menu is displayed by pressing 4System5, SERVICE MENU . The Bootloader menu is displayed by turning the analyzer power on while pressing 4DC Control5 and 4Preset5.
Control and monitor various circuits for troubleshooting. For detailed information, see the Service Modes Menu in this chapter. Display the rmware revision. See the Service Menu . Install and update the rmware in the analyzer. For detailed information, see the Bootloader Menu in this chapter.
SERVICE MENU Figure 9-2 shows the service menu. This menu is used to display the tests menu, the service modes menu, and the rmware revision information. To display the service menu, press 4System5, SERVICE MENU . Each softkey in the service menu is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Figure 9-2. Service Menu TESTS WWWWWWWWWWWWWWWWWWWWWW Displays the tests menu. For more information about the tests menu, see the Tests Menu later in this chapter.
FIRMWARE REVISION (:DIAG:FREV?) WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Displays the current rmware revision information. The number and implementation date appear in the active entry area of the display as shown below. d 4352B REVN.NN MON DD YEAR HH:MM:SS where N.
TESTS MENU Figure 9-3 shows the tests menu. The tests menu is used to select and execute one of the 22 built-in diagnostic tests. More information about the diagnostic tests is provided in the Diagnostic Tests later in this section. To display the tests menu, press 4System5, SERVICE MENU , and TESTS . When entering the tests menu, internal test 0: ALL INT is selected as the default test. The test number, name, and status abbreviation is displayed in the active entry area of the display.
INTERNAL TESTS (:DIAG:TEST 0) WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Selects the rst internal test 0: ALL INT. EXTERNAL TESTS (:DIAG:TEST 11) WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Selects the rst external test 11: FRONT PANEL DIAG. DISPLAY TESTS (:DIAG:TEST 21) WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Selects the rst display test 21: TEST PATTERN 1.
executes internal test 0: ALL INT and returns the test result. :DIAG:INIT:RES? returns the power on self-test result. A sample program using the command :DIAG:TEST:RES? is shown in Figure 9-5. This program displays the test status of internal test 1. See the 4352B GPIB Programming Guide for more information. *TST? d 10 20 30 40 50 60 70 ! ASSIGN @Hp4352 TO 717 ! When iBASIC is used, replace "717" to "800." ! OUTPUT @Hp4352;"DIAG:TEST:RES? 1" ENTER @Hp4352;Test_status$ PRINT Test_status$ ! Figure 9-5.
The power on self-test consists of A1 CPU DRAM write/read test, Dual Port SRAM write/read test, and the internal test 4: [A2] POST REGULATOR. If the test fails, a \POWER ON TEST FAILED" message is displayed at the end of the power on sequence. Internal Tests These tests are completely internally and are self-evaluating. They do not require external connections or user interaction. The analyzer has 4 internal tests. External Tests These are additional self-evaluating tests.
If the test fails, the test displays an error message for a few seconds and then sets the analyzer to the default state. The error message indicates the faulty memory location. 3: A51 GSP Runs only when selected. It veri es the following circuit blocks on the A51 GSP: GSP Chip DRAM VRAM At the end of this test, the analyzer is set to the power-on default state because the data in the tested memories has been destroyed.
14 through 20: N/A Does not assign the tests. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN DISPLAY TESTS These tests are test patterns that are used to inspect the LCD display. Test patterns are executed by entering the test number (21 through 25), then pressing EXECUTE TEST , CONTINUE . The test pattern is displayed and the softkey labels are blanked. To exit the test pattern and return to the softkey labels, press softkey 8 (on the bottom). The following is a description of the test patterns.
SERVICE MODES MENU Figure 9-6 shows the service modes menu. The service modes menu leads to one of the menus used to control the analyzer service modes. For the analyzer's service modes, see the Service Modes . To display the service modes menu, press 4System5, SERVICE MENU , and SERVICE MODES . Each softkey in the service modes menu is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN Figure 9-6.
A2/A8 WWWWWWWWWWWWWWWWWWWWWW Displays the A2/A8 Menu. See the A2/A8 Menu in this chapter. A3 WWWWWWWWWW Displays the A3/A13 Menu. See the A3/A13 Menu in this chapter. A5 WWWWWWWWWW Displays the A5 Menu. See the A5 Menu in this chapter. A6 WWWWWWWWWW Displays the A6 Menu. See the A6 Menu in this chapter. A70 WWWWWWWWWWWWWW Displays the A70 Menu. This menu is factory use only. Service Modes The analyzer has various service modes.
BUS MEASUREMENT MENU Figure 9-7 shows the bus measurement menu. This menu is used to control the bus measurements. For more information about the bus measurements, see the Bus Measurement. For the bus measurement procedure, see the Bus Measurement Procedure . To display the bus measurement menu, press 4System5, SERVICE MENU , SERVICE MODES , and BUS MEAS [ ] . Each softkey in the bus measurement menu is described below.
FREQ BUS [OFF] (:DIAG:SERV:BUS:FREQ ) WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Allows you to select one of the frequency bus nodes. The frequency bus nodes are numbered from 0 to 14. To select the desired frequency bus node, press this softkey and then enter the frequency node number by using the numeric keypad, 4*5, 4+5, or RPG knob. The node number and name are displayed in the active entry area of the display and the node abbreviation is displayed in the brackets of the menu.
Bus Measurement Values The bus measurement value is displayed with a unit \U". The DC bus measurement's \1 U" is equivalent to \1 V". The displayed value in the DC bus measurement does not corresponding to the measured voltage because the voltage detected at the DC bus node is scaled appropriately and measured. The scaling factor depends on each DC node. For example, the scaling factor at the DC bus node 1 of +5 V (AUX) is approximately 0.405. Therefore, the displayed value is nominally 2.025 U (5 U x 0.
8: [A2] +15 V (AUX) (1.92 U) This node is located on the A2 post-regulator and detects the voltage of the +15 V (AUX) power supplied to the probe power connectors on the front panel. The typical trace is at at approximately +1.8955 U (65%). 9: [A2] +15 V (1.92 U) This node is located on the A2 post-regulator and detects the voltage of the +15 V power supplied to the analog boards. The typical trace is at at approximately +1.92 U (610%). 10: [A2] +22 V (2.
25: [A3] DC CONTROL This node is located on the A3/A13 source and detects the output voltage of the DC CONTROL supplied to the A60 source LPF. The typical trace is at, and the value is proportional to the speci ed DC CONTROL voltage when the DC CONTROL voltage is output. 26 through 29: Not Assigned These nodes are not assigned. 30: [A5] VCO VTUNE This node is located on the A5 second PLL and detects the tuning voltage of the second PLL.
50: [A6] SA PATH This is di erent from the above DC BUS nodes. This selects the SA Path instead of DC BUS path as the input of A-D Converter. See the analog circuit block diagram. 51: [A6] MONITOR PATH This is di erent from the above DC BUS nodes. This selects the MONITOR Path instead of DC BUS path as the input of A-D Converter. See the analog circuit block diagram. Frequency Bus Node Descriptions The following paragraphs describe the 6 frequency bus nodes. They are listed in numerical order.
CORRECTION CONSTANTS MENU Figure 9-8 shows the correction constants menu. This menu allows you to turn o one (or more) of the corrections. When one (or more) corrections are turned o , the analyzer displays the raw measured data. You can check the raw characteristics of the source and receiver circuit. For the corrections, see the Correction Constants. To display the menu, press 4System5, SERVICE MENU , SERVICE MODES , and CORRECTION CONSTANTS .
DCPOW VOLT CC ON off WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Toggles the DC POWER output voltage correction on and o . This correction constant data is updated when performing DC POWER Voltage Correction Constants. DCPOW CURR CC ON off WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Toggles the DC POWER current measurement correction on and o .
SPEC NARR ON off WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Note All corrections must be turned to on except when checking the analog circuits. Note The analyzer stores the above correction constants in the EEPROM on the A1 CPU. It uses them to control the internal circuits and to achieve optimum performance by compensating for errors due to circuit characteristics.
A2/A8 CONTROL MENU Figure 9-9 shows the A2/A8 Control Menu hierarchy. To display the A2/A8 control menu, press 4System5, SERVICE MENU , SERVICE MODES , and A2/A8 . Each softkey of the A2/A8 control menus is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNN Figure 9-9. A2/A8 Control Menu RF ATTEN: WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Displays the control menu that allows you to control the A8 RF Attenuator setting.
A3/A13 CONTROL MENU Figure 9-10 shows the A3/A13 Source Control Menu hierarchy. To display the A3/A13 control menu, press 4System5, SERVICE MENU , SERVICE MODES , and A3 . Each softkey of the A3/A13 control menus is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNN Figure 9-10.
RANGE MENU WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Displays the control menu that allows you to control the switching frequency of the DC-DC Converter on the A3/A13 ( DCDC F-RNG ), and to control the power range for RF POWER measurement ( RF POW RNG ). This menu is for factory use only.
A5 CONTROL MENU Figure 9-11 shows the A5 Control Menu hierarchy. To display the A5 control menu, press 4System5, SERVICE MENU , SERVICE MODES , and A5 . Each softkey of the A5 control menus is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNN Figure 9-11. A5 Control Menu 2nd PLL WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Displays the 2nd PLL menus. Each softkey of the 2nd PLL menus is described below.
FREQ COUNTER WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN FREQ CNTR INPUT sets the input of the frequency counter out of the RF ( RF ), 1st IF ( 1st IF ), 2nd IF ( 2nd IF ), FM Deviation Calibration Signal ( FV CAL ). shows the frequency counted value.
A6 CONTROL MENU Figure 9-12 shows the A6 Control Menu hierarchy. To display the A6 control menu, press 4System5, SERVICE MENU , SERVICE MODES , MORE , and A6 . Each softkey of the A6 control menus is described below. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNN NNNNNNNN Figure 9-12.
IF GAIN WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW Displays the control menu that allows you to control the 4th IF Gain Ampli er of A6. You can select one of three gains (0 dB, 10 dB, 20 dB).
BOOTLOADER MENU Figure 9-13 shows the Bootloader menus and the associated menus. To display the menu, turn the analyzer on while pressing 4DC Control5 and 4Preset5. The Bootloader menu is used to install the rmware into the analyzer using a rmware disk and the built-in FDD. Also, these menus are used to make a system backup disk. Each softkey in the Bootloader menus is described below. Figure 9-13.
d Note Backup Options Format Disk Verify Data a : ON (or OFF) : ON (or OFF) This option is available on Bootloader revision 1.01 and above. Before performing SYSTEM BACKUP, the exible disk must be initialized as LIF format when the bootloader revision is 1.00. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN VERIFY OPTION NNNNNNNNNNNNNNNNNNNNNNNNNN CONTINUE NNNNNNNNNNNNNNNNNNNN CANCEL toggles verify option on and o .
10 Theory of Operation The theory of operation begins with a general description of the operation of a VCO/PLL signal analyzer. This description is followed by the detailed operating theory for the functional groups of the analyzer. Each functional group consists of several assemblies that combine to perform basic instrument functions. These groups are the power supplies, the digital control, the source, and the receiver. The operation of each group is described to the assembly level only.
POWER SUPPLY OPERATION The power supply functional group consists of the following assemblies: A40 Preregulator A50 DC-DC Converter A2 Post-Regulator These two assemblies comprise a switching power supply that provides regulated DC voltages to power all assemblies in the analyzer. See Figure 10-1. The A40 preregulator steps down and recti es the line voltage, and provides +24 V to the A50 DC-DC converter.
Figure 10-1.
Line Power Module The line power module includes the main fuse. The main fuse, which protects the input side of the preregulator from drawing too much line current, is also accessible at the rear panel. See Power Requirements in appendix B for the fuse replacement and other power considerations. A40 Preregulator The A40 preregulator contains a recti er and a switching regulator, converts the line voltage to +24 V and provides it to the A50 DC-DC converter.
A2 Post-Regulator The A2 post-regulator consists of seven lters, nine regulators, and the drive circuits for the A8 input attenuator. See Figure 5-12 in chapter 5. The A2 post-regulator distributes the following eleven power supply voltages to individual assemblies throughout the analyzer.
Figure 10-2. A2 Eight Status LED A8 RF Attenuator Drive Circuit The A2 post-regulator has the drive circuit for the A8 RF attenuator. The circuit decodes the control signal from the A1 CPU and generates the following TTL signals: A8 input attenuator drive signals (5 dB ON/OFF, 10 dB ON/OFF, 15 dB ON/OFF, 20 dB ON/OFF, 25 dB ON/OFF). These signals are supplied to A8 through the A20 motherboard.
DIGITAL CONTROL OPERATION The digital control functional group consists of the following assemblies: A1 CPU A17 24 bit I/O Port A30 Front Keyboard A31 I/O Connector A32 I-BASIC Interface A51 GSP A52 LCD A53 FDD (Flexible Disk Drive) These assemblies combine to provide digital control for the analyzer. They provide math processing functions, as well as communications between the analyzer and an external controller and/or peripherals.
Figure 10-3.
A1 CPU The A1 CPU consists of the following circuits and parts (See Figure 10-3): CPU central processing unit that controls the analyzer. DSP digital signal processor that is used for fast data processing. Memory storages consists of BOOT ROMs, Flash Memory, EEPROM, Backup SRAM, DRAM, and Dual Port SRAM. The backup SRAM is powered from a large capacitor that is charged when the analyzer is turned on. Therefore, the SRAM keeps its data at least 72 hours after the analyzer is turned o .
A32 I-BASIC Interface The A32 I-BASIC Interface is the board with three connectors: the EXT PROG RUN/CONT connector, the I/O Port connector, and the mini-DIN connector. These connectors are connected to the I/O control and mini-DIN control circuit on A1 through the A20 motherboard. A51 GSP The A51 GSP (graphics system processor) provides an interface between the A1 CPU and the A52 LCD. The A1 CPU converts the formatted data to GSP commands and writes them to the A51 GSP.
SOURCE THEORY The 4352B generates the DC POWER voltage, the DC CONTROL voltage, and the MOD out modulation signal (1 kHz) on the front panel. See Figure 10-4. Figure 10-4. Source Group Simpli ed Block Diagram The source group consists of the following assemblies: A3/A13 Source A60 DC Source LPF A part of A6 Spectrum Analyzer as a reference oscillator A70 DC O set (Opt.
RECEIVER THEORY The 4352B receives the input signal from RF IN connector on the front panel, and measures/analyzes the input signal according to the measurement item selected (RF POWER, FREQUENCY, C/N RATIO, DC POWER CURRENT, PHASE NOISE, RF TRANSIENT, SPECTRUM, and FM DEVIATION). See Figure 10-5. Figure 10-5.
A5 Second PLL The A5 Second PLL consists of the 2nd local oscillator, the frequency counter, and the FV converter. The 2nd local oscillator generates the applicable signals to make the proper 2nd IF signal. The frequency counter is used to measure the frequency. In case of 64 kHz resolution selection, the frequency counter counts the signal, which is RF input signal/64. In case of 1 kHz resolution selection, the frequency counter counts the 1st IF signal.
A11 Thermometer The A11 Thermometer is used to measure the temperature around the A9 Peak Detector, and to compensate the RF power value of the A9 Peak Detector with the A11 Thermometer reading value. A part of A3/A13, A60 The A3/A13/A60 not only generates the DC POWER/DC VOLTAGE/MOD OUT outputs, but also monitors the current of the DC POWER output. The A13 also contains a mutiplexer which selects one of several nodes to the A6 Spectrum Analyzer in accordance with the measurement item.
11 Replaceable Parts Introduction This chapter lists the analyzer's replaceable parts. How to order the parts is also described. Ordering Information To order a part listed in the replaceable parts table, quote the Agilent Technologies part number (with a check digit), indicate the quantity required, and address the order to the nearest Agilent Technologies o ce. The check digit will ensure accurate and timely processing of the order.
Replaceable Parts List The Replaceable parts table lists the following information for each part. 1 2 3 4 5 6 Agilent Technologies part number. Part number check digit (CD). Part quantity as shown in the corresponding gure. There may or may not be more of the same part located elsewhere in the instrument. Part description, using abbreviations (see Table 11-2). A typical manufacturer of the part in a ve-digit code (see Table 11-1). The manufacturer's part number. Table 11-1.
Table 11-2. List of Abbreviations A A.F.C. AMPL B.F.
Figure 11-1. Top View Table 11-3. Top View Ref. Desig. A52 A51 A50 A2 A3 A13 A17 A5 A6 A60 A40 A70 A54 11-4 Agilent Part Number 2090-0534 E4970-66552 E4970-66550 04396-66542 04352-66503 04352-66513 04351-66517 04352-66515 04352-66506 04352-66560 0950-3246 04352-66540 0950-2924 Replaceable Parts C Qty. D 8 9 7 4 5 7 0 9 8 4 7 0 6 1 1 1 1 1 1 1 1 1 1 1 1 1 Description LCD GSP Board DC-DC Converter Post Regulator Connector Board DC/FM Source Board 24 Bit I/O Board Receiver Board Spe. Ana.
Figure 11-2. Bottom View Ref. Desig. A1 A7 A8 A9 A10 A11 A20 A53 Agilent Part Number E4970-66501 11636B 0955-1008 8471E#004 0955-0971 04352-66516 04352-61621 04396-66520 0950-3208 Table 11-4. Bottom View C Qty.
Figure 11-3. Front Assembly Parts 1 Table 11-5. Front Assembly Parts 1 Ref. Desig. 1 2 3 4 5 11-6 Agilent Part Number 04352-00222 1250-0252 5040-3325 5040-3324 2950-0035 Replaceable Parts C Qty.
Figure 11-4. Front Assembly Parts 2 Table 11-6. Front Assembly Parts 2 Ref. Desig. 1 2 3 Agilent Part Number 04351-61611 04351-61614 04351-61612 C Qty.
Figure 11-5. Front Assembly Parts 3 Table 11-7. Front Assembly Parts 3 Ref. Desig. 1 2 3 3 11-8 Agilent Part Number E4970-25001 04396-40071 3050-0891 0515-1550 Replaceable Parts C Qty.
Figure 11-6. Front Assembly Parts 4 Table 11-8. Front Assembly Parts 4 Ref. Desig. 1 2 3 4 Agilent Part Number 04286-40001 04352-25051 04352-66530 0515-1550 C Qty.
Figure 11-7. Front Assembly Parts 5 Table 11-9. Front Assembly Parts 5 Ref. Desig. 1 2 3 4 5 6 11-10 Agilent Part Number E4970-04002 E4970-25002 0950-2924 0515-0977 04396-61709 0400-0010 Replaceable Parts C Qty. D 3 8 6 3 5 2 1 1 1 2 1 1 Description Cover Insulator A54 Inverter Board SCR-MACH M2X0.
Figure 11-8. Front Assembly Parts 6 Table 11-10. Front Assembly Parts 6 Ref. Desig. 1 2 Agilent Part Number 2090-0574 04396-25071 C Qty.
Figure 11-9. Front Assembly Parts 7 Table 11-11. Front Assembly Parts 7 Ref. Desig. 1 2 11-12 Agilent Part Number E4970-66539 0515-1550 Replaceable Parts C Qty.
Figure 11-10. Front Assembly Parts 8 Table 11-12. Front Assembly Parts 8 Ref. Desig. 1 2 Agilent Part Number 0515-1550 E4970-61651 C Qty.
Figure 11-11. Front Assembly Parts 9 Table 11-13. Front Assembly Parts 9 Ref. Desig. 1 11-14 Agilent Part Number 0515-1550 Replaceable Parts C Qty.
Figure 11-12. Rear Assembly Parts 1 Table 11-14. Rear Assembly Parts 1 Ref. Desig. 1 2 3 4 5 Agilent Part Number 1250-0252 2190-0102 2950-0035 5040-3325 5040-3324 C Qty.
Figure 11-13. Rear Assembly Parts 2 Table 11-15. Rear Assembly Parts 2 Ref. Desig. 1 2 3 4 5 6 7 11-16 Agilent Part Number 04396-61633 04396-61634 04352-61614 04351-61622 04352-61618 04396-61635 1400-1334 Replaceable Parts C Qty.
Figure 11-14. Rear Assembly Parts 3 Table 11-16. Rear Assembly Parts 3 Ref. Desig. 1 2 3 4 Agilent Part Number 04396-61001 0515-1598 2190-0586 3050-0893 C Qty.
Figure 11-15. Rear Assembly Parts 4 Table 11-17. Rear Assembly Parts 4 Ref. Desig. 1 2 3 4 5 11-18 Agilent Part Number E4970-66534 1251-7812 0380-0644 2190-0577 0515-1550 Replaceable Parts C Qty.
Figure 11-16. Rear Assembly Parts 5 Table 11-18. Rear Assembly Parts 5 Ref. Desig. 1 2 3 4 5 Agilent Part Number E4970-66532 3050-1546 2190-0054 2950-0054 1251-7812 C Qty.
Figure 11-17. Rear Assembly Parts 6 Table 11-19. Rear Assembly Parts 6 Ref. Desig. 1 11-20 Agilent Part Number 1252-6951 2110-0030 2110-1134 Replaceable Parts C Qty.
Figure 11-18. Rear Assembly Parts 7 Table 11-20. Rear Assembly Parts 7 Ref. Desig. 1 2 3 4 Agilent Part Number E5100-61640 04396-61706 1400-0611 04396-61682 C Qty.
Figure 11-19. 1st Mixer Board -1 Ref. Desig. 1 2 3 4 5 6 7 8 9 10 11-22 Agilent Part Number 04352-66516 1250-2312 2190-0104 2950-0132 11636B 1250-1159 0955-1008 0515-1550 0955-0971 8471E#004 Replaceable Parts Table 11-21. 1st Mixer Board -1 C Qty.
Figure 11-20. 1st Mixer Board -2 Ref. Desig. 1 2 Agilent Part Number 04352-61622 04352-61623 Table 11-22. 1st Mixer Board -2 C Qty.
Figure 11-21. Power Switch ASSY Ref. Desig. 1 2 3 4 11-24 Agilent Part Number 04396-61701 04396-01274 0515-0999 5041-0564 Replaceable Parts Table 11-23. Power Switch ASSY C Qty. Description D 7 3 9 4 1 1 2 1 Cable ASSY Holder M2.5X0.
Figure 11-22. Chassis/Frames -1 Ref. Desig. 1 2 3 4 5 6 Agilent Part Number 04396-60071 5021-5837 0515-1719 5022-1190 5021-5808 0515-1668 Table 11-24. Chassis/Frames -1 C Qty. Description D 2 2 3 4 7 1 1 2 8 1 1 8 Chassis ASSY STRUT COR 497.8D SCR M4X10 Front Frame221.5 RR-FR 221.
Figure 11-23. Chassis/Frames -2 Ref. Desig. 1 2 3 4 5 11-26 Agilent Part Number 5021-5837 0515-1668 0515-2079 0515-1718 0515-0868 Replaceable Parts Table 11-25. Chassis/Frames -2 C Qty. Description D 2 1 0 2 1 2 8 4 2 2 STRUT COR 497.
Figure 11-24. 1st Mixer Installation Ref. Desig. 1 2 3 3 Agilent Part Number Table 11-26. 1st Mixer Installation C Qty.
Figure 11-25. FDD Assembly Table 11-27. FDD Assembly Ref. Desig. 1 2 3 4 5 6 11-28 Agilent Part Number 04396-01275 04396-25004 0950-3208 04396-61651 04396-61672 0515-0914 Replaceable Parts C Qty. D 4 7 0 6 1 8 1 1 1 1 1 4 Description Angle Sponge A53 FDD Flat CBL ASSY Wire ASSY SCR-MACH M3X0.
Figure 11-26. Motherboard Installation Ref. Desig. 1 2 3 5 6 7 Agilent Part Number 04396-66520 04396-61661 0515-1550 04352-61613 04352-61621 04352-61615 Table 11-28. Motherboard Installation C Qty.
Figure 11-27. CPU Board Installation Ref. Desig. 1 2 3 4 5 11-30 Agilent Part Number E4970-66501 04396-61661 04396-61671 04396-61662 0515-1550 Replaceable Parts Table 11-29. CPU Board Installation C Qty.
Figure 11-28. Saddle Edge Table 11-30. Saddle Edge Ref. Desig. 1 2 Agilent Part Number 1400-1048 1400-2198 C Qty.
Figure 11-29. Preregulator Installation Table 11-31. Preregulator Installation Ref. Desig. 1 2 3 11-32 Agilent Part Number 0950-3246 04396-61671 0515-1719 Replaceable Parts C Qty.
Figure 11-30. DC-DC Converter Installation Ref. Desig. 1 Table 11-32. DC-DC Converter Installation Agilent Part C Qty.
Figure 11-31. Front Panel Installation Ref. Desig. 2 11-34 Agilent Part Number 0515-0889 Replaceable Parts Table 11-33. Front Panel Installation C Qty. Description D 6 10 SCR-MACH M3.5X.
Figure 11-32. Troidal Core Ref. Desig. 1 Agilent Part Number 1400-1334 Table 11-34. Troidal Core C Qty.
Figure 11-33. Front Bezel Ref. Desig. 1 2 3 4 5 6 7 11-36 Agilent Part Number 04191-08000 04352-00221 04396-40051 04352-87121 5182-7522 5041-9173 5041-9176 Replaceable Parts Table 11-35. Front Bezel C Qty. Description D 0 6 6 7 6 9 2 1 1 1 1 1 2 1 Spring Panel Front Bezel Label Front RPG Knob SIDE TRIM 221.
Figure 11-34. Rear Panel Installation Ref. Desig. 2 3 4 5 Agilent Part Number 1400-1391 1400-0611 0400-0276 04396-61662 Table 11-36. Rear Panel Installation C Qty.
Figure 11-35. Covers Ref. Desig. 1 2 3 4 5 6 7 8 11-38 Agilent Part Number 5002-3989 5063-9210 5041-9186 5041-9187 0515-1132 5002-1088 1460-1345 5041-9167 Replaceable Parts Table 11-37. Covers C Qty. Description D 1 1 4 5 4 7 5 1 2 2 2 2 4 1 2 4 Cover Side REFE Strap Handle Strap Handle FRT Strap Handle Rear SCR-MACH M5X0.
Figure 11-36. DC/FM Source Board ASSY Ref. Desig. 1 2 3 Table 11-38. DC/FM Source Board ASSY Description Agilent Part C Qty.
Figure 11-37. DC/FM Source Board Installation Ref. Desig. 1 11-40 Table 11-39. DC/FM Source Board Installation Description Mfr Agilent Part C Qty.
Figure 11-38. GSP Board Installation Ref. Desig. 1 2 Agilent Part Number E4970-66552 04396-61707 Table 11-40. GSP Board Installation C Qty.
Figure 11-39. Post-Regulator Installation Table 11-41. Post-Regulator Installation Ref. Desig. 1 2 3 11-42 Agilent Part Number 04396-66542 04396-61674 0515-1550 Replaceable Parts C Qty.
Figure 11-40. Receiver Board and Spe Ana Board Table 11-42. Receiver Board and Spe Ana Board Ref. Desig. 1 2 3 Agilent Part Number 04352-66515 04352-66506 04396-61626 C Qty. D 7 8 5 1 1 1 Description A5 Receiver Board A6 Spe. Ana.
Figure 11-41. Cables Ref. Desig. 1 2 11-44 Agilent Part Number 04352-61611 04351-61618 Replaceable Parts Table 11-43. Cables C Qty.
Figure 11-42. Output Filter ASSY Table 11-44. Output Filter ASSY Ref. Desig. 1 2 3 4 5 Agilent Part Number 04352-66560 04352-61616 04352-61617 0515-1550 1400-1391 C Qty.
Figure 11-43. DC O set (Option 001) Table 11-45. DC O set (Option 001) Ref. Desig. 1 2 3 4 5 6 7 8 11-46 Agilent Part Number 04352-66560 04352-61631 04352-61617 0515-1550 1400-1391 04352-66540 04352-61632 0515-2079 Replaceable Parts C Qty.
Figure 11-44. 24 Bit I/O Board Ref. Desig. 1 2 Agilent Part Number 04351-66517 0515-2079 Table 11-46. 24 Bit I/O Board C Qty.
Figure 11-45. Top Shield Plate Table 11-47. Top Shield Plate Ref. Desig. 1 2 3 11-48 Agilent Part Number 04352-00621 0515-0914 0515-0913 Replaceable Parts C Qty. D 0 8 7 Description 1 Shield Top 15 SCR-MACH M3X0.5 4 SCR-MACH M4X0.
Figure 11-46. BNC-BNC Adapter Table 11-48. BNC-BNC Adapter Ref. Desig. 1 Agilent Part Number 1250-1859 C Qty.
Figure 11-47. Top Covers/Foot Table 11-49. Top Covers/Foot Ref. Desig. 1 2 3 11-50 Agilent Part Number 5002-1047 5041-9188 0515-1232 Replaceable Parts C Qty. D 8 6 1 1 4 4 Description Cover Top Foot Rear SCR-MACH M3.
12 Post Repair Procedures INTRODUCTION This chapter lists the procedures required to verify the analyzer operation after an assembly is replaced with a new one. POST REPAIR PROCEDURES Table 12-1 Post Repair Procedures lists the required procedures that must be performed after the replacement of an assembly or the EEPROM. These are the minimum recommended procedures to ensure that the analyzer is working properly following the replacement.
Table 12-1.
Table 12-1.
Table 12-1. Post Repair Procedures (continued) Adjustments Correction Constants (CC) Replaced Assembly or Part A17 24 Bit I/O Port None Veri cation INSPECT THE POWER ON SEQUENCE 1 External Test 13: 24 BIT I/O PORT2 A20 Motherboard None INSPECT THE POWER ON SEQUENCE OPERATOR'S CHECK A30 Keyboard None 1 1 INSPECT THE POWER ON SEQUENCE 1 External Test 11: FRONT PANEL DIAG.
A Manual Changes Introduction This Appendix contains the information required to adapt this manual to earlier versions or con gurations of the 4352B than the current printing date of this manual. The information in this manual applies directly to the 4352B VCO/PLL Signal Analyzer serial number pre x listed on the title page of this manual.
Change 1 Change the Replaceable Parts as following. Figure A-1. Front Assembly Parts 5 Table A-3. Front Assembly Parts 5 Ref. Desig. 1 2 3 4 A-2 Agilent Part Number E4970-04002 E4970-25002 0950-2924 0515-0977 Manual Changes C Qty. D 3 8 6 3 1 1 1 2 Description Cover Insulator A54 Inverter Board SCR-MACH M2X0.
Figure A-2. Front Assembly Parts 6 Table A-4. Front Assembly Parts 6 Ref. Desig. 1 2 Agilent Part Number C Qty.
Figure A-3. Front Assembly Parts 7 Table A-5. Front Assembly Parts 7 Ref. Desig. 1 2 3 A-4 Agilent Part Number E4970-61651 04396-61709 0515-1550 Manual Changes C Qty.
Serial Number Agilent Technologies uses a two-part, ten-character serial number that is stamped on the serial number plate (see Figure A-4) attached to the rear panel. The rst ve digits and the letter are the serial pre x and the last ve digits are the su x. Figure A-4.
B Power Requirement Replacing Fuse Fuse Selection Select proper fuse according to the Table B-1. Table B-1. Fuse Selection Fuse Rating/Type Fuse Part Number 5A 250Vac UL/CSA type Time Delay 2110-0030 For ordering the fuse,contact your nearest Agilent Technologies Sales and Service O ce. Lever a small minus screwdriver to dismount the fuse holder above the AC line receptacle on the rear panel. To check or replace the fuse, pull the fuse holder and remove the fuse.
Power Requirements The 4352B requires the following power source: Voltage : 90 to 132 Vac, 198 to 264 Vac Frequency : 47 to 63 Hz Power : 300 VA maximum Power Cable In accordance with international safety standards, this instrument is equipped with a three-wire power cable. When connected to an appropriate ac power outlet, this cable grounds the instrument frame. The type of power cable shipped with each instrument depends on the country of destination.
Figure B-1.
Error Message This section lists the error messages that are displayed on the 4352B display or transmitted by the instrument over GPIB. Each error message is accompanied by an explanation, and suggestions are provided to help in solving the problem. Where applicable, references are provided to the related chapter of the appropriate manual. When displayed, error messages are preceded with the word \CAUTION:." That part of the error message has been omitted here for the sake or brevity.
Error Messages (Alphabetical Order) Error Messages in Alphabetical Order 45 1st IF Out Of Range The 4352B's 1st IF frequency is outside of the proper range. Possible problems and the corrective action are shown below: The frequency of the external signal generator is not correct. The 4352B has not performed automatic control of the external signal generator via GPIB ( LO CONTROL MAN and/or ADDRESSABLE ONLY is selected). Verify the frequency of the external signal generator.
Error Messages (Alphabetical Order) AFC Out Of Loop 48 The automatic frequency control function could not follow the uctuation in the measurement condition, and did not converge on the target frequency. Possible problems and the corrective action are shown below: The tuning sensitivity is improperly set. Press 4Menu5, AUTO FREQ CONTROL , SENSITIVITY , and the entry keys to specify a proper tuning sensitivity (the unit is [Hz/V]). The maximum value of the control voltage is too small.
Error Messages (Alphabetical Order) 132 CAN'T SAVE GRAPHICS WHEN COPY IN PROGRESS If you attempt to save graphics when a print is in progress, this error message is displayed. Wait until the print is completed, then save the graphics again. 0281 Cannot create program Indicates that an attempt to create a program was unsuccessful. A reason for the failure might include not enough memory. 54 Carrier Overload The carrier level in a C/N ratio measurement or a phase noise measurement is too large.
Error Messages (Alphabetical Order) 52 DC Output On Required in AFC The automatic frequency control function was set on, however, the power or control voltage is not being applied to the DUT. Verify that the power/control voltages output is set to ON on the LCD display information (the measurement setting parameter display or the status notations). If the power/control voltage output is turned to OFF, press 4DC Power5 or 4DC Control5, and OUTPUT ON off .
Error Messages (Alphabetical Order) 44 F-V Input Over ow The input frequency to the 4352B's F-V converter is too high. This message indicates that the DUT's frequency has uctuated widely in a very short time (several hundred kHz in several tens of ms). Verify the DUT's output frequency stability. 0257 FILE NAME ERROR Indicates that a legal program command or query could not be executed because the le name on the device media was in error. For example, an attempt was made to copy to a duplicate le name.
Error Messages (Alphabetical Order) 0282 Illegal program name The name used to reference a program was invalid. For example, rede ning an existing program, deleting a nonexistent program, or in general, referencing a nonexistent program. 0283 Illegal variable name An attempt was made to reference a nonexistent variable in a program. 0213 Init ignored A request for a measurement initiation was ignored as another measurement was already in progress.
Error Messages (Alphabetical Order) 50 Invalid Dev Cal The correction coe cient of the FM deviation calibration is not proper. Adjustment or repair is necessary. Contact our service o ce or the company from which you purchased the 4352B. 130 INVALID FILE NAME The le name for the RECALL, PURGE, or RE-SAVE function must have a \_D" or \_S" extension for LIF format. 0103 Invalid separator The parser was expecting a separator and encountered an illegal character (semicolon (;), comma (,), etc.).
Error Messages (Alphabetical Order) 137 NO DATA TRACE DISPLAYED Indicates that SCALE FOR [DATA] was pressed when no data trace is displayed. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 118 NO FIXED DELTA MARKER The xed 1marker was not turned on. Be sure to turn the xed 1marker on before using FIXED 1MKR VALUE or FIXED 1MKR AUX VALUE .
Error Messages (Alphabetical Order) 0120 Numeric data error 0128 Numeric data not allowed This error, as well as errors 0121 through 0129, are generated when parsing a data element that appears to be numeric, including the nondecimal numeric types. This error message might be displayed if the 4352B detects an unknown problem. A legal numeric data element was received, but the 4352B does not accept it in this position for a header. 75 POWER FAILED ON nnn Serious error.
Error Messages (Alphabetical Order) 0350 Queue over ow A speci c code entered into the queue instead of the code that caused the error. This code indicates that there is no room in the queue and an error occurred but was not recorded. 0400 Query error This is the generic query error that the 4352B displays when it cannot detect more speci c errors. This code indicates only that a query error as de ned in IEEE 488.2, 11.5.1.1.7 and 6.3 has occurred.
Error Messages (Alphabetical Order) Verify that the DUT generates the proper signal, and inputs it to the 4352B RF IN connector. If the signal is generated, check its frequency. Press 4Sense Range5, MAX TRANS FREQ or MIN TRANS FREQ , and the entry keys to change the detection bandwidth, if required. NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 78 RF Level Overload The input level to the 4352B RF IN connector is too high (+20 dBm or more).
Error Messages (Alphabetical Order) 0150 String data error 0158 String data not allowed This error, as well as errors 0151 and 0158, are generated when analyzing the syntax of a string data element. This error message might be displayed if the 4352B detects an unknown problem. A string data element was encountered but was not allowed by the 4352B at this point in parsing. 0130 Su x error 0138 Su x not allowed This error, as well as errors 0131 through 0139, are generated when parsing a su x.
Error Messages (Alphabetical Order) 0124 Too many digits The mantissa of a decimal numeric data element contains more than 255 digits excluding leading zeros (see IEEE 488.2, 7.7.2.4.1). 0223 Too much data A legal program data element of block, expression, or string type was received that contained more data than the 4352B could handle due to memory or related device-speci c requirements. 0210 Trigger error A trigger related error occurred.
Error Messages (Numerical Order) Error Messages in Numerical Order Note 0 The positive number error messages are listed rst, and then negative number error messages are listed.
Error Messages (Numerical Order) 57 RF Input Under Trans Min Freq 58 RF Input Over Trans Max Freq 59 Target Freq Out Of Range 70 A/D Overload 75 POWER FAILED ON nnn 76 DC Power Current Overload 77 DC Control Current Overload 78 RF Level Overload 79 X-tal PLL Unlocked (40 MHz) 80 X-tal PLL Unlocked (85.
Error Messages (Numerical Order) 130 INVALID FILE NAME 131 NO STATE/DATA FILES ON DISK 132 CAN'T SAVE GRAPHICS WHEN COPY IN PROGRESS 133 LIF-DOS COPY NOT ALLOWED 134 NO STATE/DATA FILES ON MEMORY 135 DUPLICATE FILE EXTENSION 137 NO DATA TRACE DISPLAYED 138 NO MEMORY TRACE DISPLAYED 144 CAN'T CHANGE NUMBER OF POINTS 159 INSUFFICIENT memory 160 WRONG I/O PORT DIRECTION 171 INVALID DATE 230 FLOPPY DISK DRIVE FAILURE FOUND 0100 Command error 0101 Invalid character 0102 Syntax erro
Error Messages (Numerical Order) 0113 Unde ned header 0114 Header Su x out of range 0120 Numeric data error 0121 Invalid character in number 0123 Exponent too large 0124 Too many digits 0128 Numeric data not allowed 0130 Su x error 0131 Invalid su x 0134 Su x too long 0138 Su x not allowed 0140 Character data error 0141 Invalid character data 0144 Character data too long 0148 Character data not allowed 0150 String data error 0151 Invalid string data 0158 String data not a
Error Messages (Numerical Order) 0213 Init ignored 0220 Parameter error 0221 Settings con ict 0222 Data out of range 0223 Too much data 0224 Illegal parameter value 0225 Data out of memory 0230 Data corrupt or stale 0231 Data questionable 0240 Hardware error 0241 Hardware missing 0250 MASS STORAGE ERROR 0257 FILE NAME ERROR 0280 Program error 0281 Cannot create program 0282 Illegal program name 0283 Illegal variable name 0284 Program currently running 0285 Program synta
Error Messages (Numerical Order) 0400 Query error 0410 Query INTERRUPTED 0420 Query UNTERMINATED Messages-20