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Page 2 Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX. For example, model number HP8648A is now model number Agilent 8648A.
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Page 4 ervice Guide P 8753D Network Analyzer Option 011 BCDE rinted in USA DRAFT 3/21/106 15:16 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 5 P part number: 08753-90406 Supersedes October 1997 Printed in USA December 1997 otice. The information contained in this document is subject to change without notice. ewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and tness for a particular purpose.
Page 6: Table Of Contents
ontents . Service Equipment and Analyzer Options able of Service est Equipment ....Principles of Microwave Connector Care ....Analyzer Options Available .
Page 7 Tables 1-1. Required ools ......1-2. Service est Equipment ..... . . 1-3.
Page 8: Service Equipment And Analyzer Options
Service Equipment and Analyzer Options able of Service est Equipment Table 1-1. Required Tools -8, -10, -15, and -20 ORX screwdrivers Flat-blade screwdrivers small, medium, and large 5/16-inch open-end wrench (for SMA nuts) 3/16, 5/16, and 9/16-inch hex nut drivers 5/16-inch open-end torque wrench (set to 10 in-lb) 2.5 mm hex-key driver Non-conductive and non-ferrous adjustment tool...
Page 9 Test et HP 85046B/47B P (Option 011) or use with HP 8753D Option 011 or use with HP 8753D Option 011 and 006. 1-2 Service Equipment and Analyzer Options RAFT 3/21/106 15:06 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 10 Attenuator 110 dB(Calibrated @ 30 MHz) HP 8496A Attenuators (xed): Return loss: 32 dB 3 dB Type-N HP 8491A Opt. 003 20 dB Type-N HP 8491A Opt. 020 A, P, T 10 dB Type-N HP 8491A Opt. 010 A, P...
Page 11 P, T outputs: .25 dB Output WR: 1.1 dB > Low Pass Filter 50 dB @ 2.96 Hz and passband that includes HP P/N 9135-0198 800 MHz Termination 50 , Type-N (m), Return loss 30 dB HP 908A Anti-static Wrist trap...
Page 12: Principles Of Microwave Connector Care
Chapter 3 of the calibration kit manuals. For additional connector care instruction, contact your local Hewlett-Packard Sales and Service Oce about course numbers HP 85050A+24A and HP 85050A+24D. See the following table for quick reference tips about connector care.
Page 13 Table 1-3. Connector Care Quick Reference andling and Storage Do Not Keep connectors clean Touch mating-plane surfaces Extend sleeve or connector nut Set connectors contact-end down Use plastic end-caps during storage Visual Inspection Do Not Inspect all connectors carefully Use a damaged connector - ever Look for metal particles, scratches, and dents Connector Cleaning Do Not...
Page 14: Analyzer Options Available
Analyzer Options Available ption 1D5, High Stability Frequency Reference his option oers 0.05 ppm temperature stability from 0 to 60 C (referenced to 25 C). ption 002, Harmonic Mode his option provides measurement of second or third harmonics of the test device's fundamental output signal.
Page 15: Service And Support Options
W08 Option, which converts the one year on-site warranty to a three year return to HP warranty. Consult your local HP customer engineer for details.
Page 16: Option W54
If support was not purchased along with the analyzer, there are many repair and calibration options available from Hewlett-Packard's support organization. hese options cover a range of on-site services and agreements with varying response times as well as return to HP agreements and per-incident pricing. Contact your local Hewlett-Packard customer engineer for details.
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Page 18 ontents a. Performance Test Record or Analyzers with a requency Range of 300 kHz to 3 GHz ..2a-1 RAFT Contents-1 3/21/106 15:21 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
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Page 20 Performance Test Record or Analyzers with a requency Range of 300 kHz to 3 GHz See the next \Performance Test Record" section if your analyzer frequency range is from 30 kHz to 6 GHz (Option 006). RAFT Performance Test Record 2a-1 3/21/106 15:21 Artisan Scientific - Quality Instrumentation ...
Page 21 HP 8753 Performance Test Record (1 of 18) alibration Lab Address: Report Number Date Last alibration Date ustomer's Name Performed by odel HP 8753D Option 011 Serial No. Option(s) Firmware Revision Ambient Temperature Relative Humidity Test Equipment Used: Description odel Number...
Page 22 HP 8753 Performance Test Record (2 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 1. Source Frequency Range and Accuracy CW Frequency Lower Limit Measured Value Upper Limit Measurement...
Page 23 HP 8753 Performance Test Record (3 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Path Loss Calculations Worksheet CW Frequency Source Output...
Page 24 HP 8753 Performance Test Record (4 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Power Range and Power Linearity Source Power Level...
Page 25 HP 8753 Performance Test Record (5 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Power Level Accuracy CW Frequency Path Loss Calibrated...
Page 26 HP 8753 Performance Test Record (6 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 3. Receiver Minimum R Channel Level CW Frequency Specication Marker Value Measurement (dB) (dB) Uncertainty (dB) 3.29 MHz...
Page 27 HP 8753 Performance Test Record (7 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 4. Receiver Minimum R Channel Level for External Source Mode CW Frequency Frac-N VCO Frac-N VCO...
Page 28 HP 8753 Performance Test Record (8 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 5. Receiver Channel Noise Floor Level Frequency Range IF Bandwidth Specication Calculated Measurement (dBm) Value...
Page 29 HP 8753 Performance Test Record (9 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 7. Receiver Magnitude Frequency Response CW Frequency Power R Input A Input B Input Greatest Spec.
Page 30 HP 8753 Performance Test Record (10 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 8. Phase Frequency Response Frequency Range Ratio Specication Measured Value Measurement Uncertainty kHz - 3 GHz...
Page 31 HP 8753 Performance Test Record (11 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 9. Receiver Input Crosstalk Frequency Range Specication Marker Value Measurement (dB) Uncertainty R into A Crosstalk kHz - 1.
Page 32 HP 8753 Performance Test Record (12 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 10. Receiver Trace Noise CW Frequency Ratio Measured Value Specication Measurement (G z) (rms) Uncertainty .
Page 33 HP 8753 Performance Test Record (13 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 11. Receiver Input Impedance Frequency Range B Return Loss A Return Loss R Return Loss...
Page 34 HP 8753 Performance Test Record (14 of 18) For 300 kHz|3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 12. Receiver Magnitude Dynamic Accuracy Test Port 8496A Test Port Expected Dynamic Spec. Meas. Input Power Attn.
Page 35 HP 8753 Performance Test Record (15 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 13. Receiver Compression - Magnitude CW Frequency Start Power Stop Power Measured Specication Measurement (dBm)
Page 36 HP 8753 Performance Test Record (16 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 14. Receiver Compression - Phase CW Frequency Start Power Stop Power Measured Specication Measurement (dBm)
Page 37 HP 8753 Performance Test Record (17 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 15. Source and Receiver armonics Stop Frequency armonic Specication Measured Value Measurement (G z) (dBc)
Page 38 HP 8753 Performance Test Record (18 of 18) For 300 kHz-3 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 Report Number Serial Number Date 16. Magnitude Frequency Response Analyzer Ext. Power Input A Input B Max. Di. Spec. Meas.
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Page 40 ontents b. Performance Test Record or Analyzers with a requency Range of 30 kHz to 6 GHz ..2b-1 RAFT Contents-1 3/21/106 15:21 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 41 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 42 Performance Test Record or Analyzers with a requency Range of 30 kHz to 6 GHz See the previous \Performance Test Record" section if your analyzer frequency range is from 300 kHz to 3 GHz. RAFT Performance Test Record 2b-1 3/21/106 15:21 Artisan Scientific - Quality Instrumentation ...
Page 43 HP 8753 Performance Test Record (1 of 18) alibration Lab Address: Report Number Date Last alibration Date ustomer's Name Performed by odel HP 8753D Option 011 and Option 006 Serial No. Option(s) Firmware Revision Ambient Temperature Relative Humidity Test Equipment Used:...
Page 44 HP 8753 Performance Test Record (2 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option Report Number Serial Number Date 1. Source Frequency Range and Accuracy CW Frequency Lower Limit Measured Value Upper Limit...
Page 45 HP 8753 Performance Test Record (3 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Path Loss Calculations Worksheet CW Frequency...
Page 46 HP 8753 Performance Test Record (4 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Power Range and Power Linearity...
Page 47 HP 8753 Performance Test Record (4 of 18) For 30 kHz-6 GHz Analyzers (continued) ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Power Range and Power Linearity...
Page 48 HP 8753 Performance Test Record (5 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 2. Source Power Range, Linearity, and Accuracy: Power Level Accuracy CW Frequency...
Page 49 HP 8753 Performance Test Record (6 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 3. Receiver Minimum R Channel Level CW Frequency Specication Marker Value Measurement...
Page 50 HP 8753 Performance Test Record (7 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 4. Receiver Minimum R Channel Level for External Source Mode CW Frequency...
Page 51 HP 8753 Performance Test Record (8 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 6. Receiver Channel Noise Floor Level Frequency Range IF Bandwidth Specication Calculated...
Page 52 HP 8753 Performance Test Record (9 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 7. Receiver Magnitude Frequency Response CW Frequency Power R Input A Input...
Page 53 HP 8753 Performance Test Record (10 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 8. Phase Frequency Response Frequency Range Ratio Specication Measured Value Measurement Uncertainty...
Page 54 HP 8753 Performance Test Record (11 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 9. Receiver Input Crosstalk Frequency Range Specication Marker Value Measurement (dB) Uncertainty R into A Crosstalk kHz - 1.
Page 55 HP 8753 Performance Test Record (12 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 10. Receiver Trace Noise CW Frequency Ratio Measured Value Specication Measurement (G z)
Page 56 HP 8753 Performance Test Record (13 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 11. Receiver Input Impedance Frequency Range B Return Loss A Return Loss...
Page 57 HP 8753 Performance Test Record (14 of 18) For 30 kHz|6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 12. Receiver Magnitude Dynamic Accuracy Test Port 8496A Test Port Expected Dynamic Spec.
Page 58 HP 8753 Performance Test Record (15 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 13. Receiver Compression - Magnitude CW Frequency Start Power Stop Power Measured...
Page 59 HP 8753 Performance Test Record (16 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 14. Receiver Compression - Phase CW Frequency Start Power Stop Power Measured...
Page 60 HP 8753 Performance Test Record (17 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Report Number Option 006 Serial Number Date 15. Source and Receiver armonics Stop Frequency armonic Specication Measured Value Measurement...
Page 61 HP 8753 Performance Test Record (18 of 18) For 30 kHz-6 GHz Analyzers ewlett-Packard Company Model P 8753D Option 011 and Option 006 Report Number Serial Number Date 16. Magnitude Frequency Response Analyzer Ext. Power Input A Input B Max. Di.
Page 62 Frequency Accuracy Adjustment ....3-45 H 8753D Option 011 with Option 1D5 Only ....3-47 High/Low Band Transition Adjustment .
Page 63 How to Set Up the High/Low Band Transition Adjustments ..3-59 How to Set Up the Fractional-N Spur Avoidance and FM Sideband Adjustment 3-59 Sequence Contents ......3-59 Sequence for the High/Low Band Transition Adjustment .
Page 64 Figures 3-1. artial Component Location Diagram ....3-2. Setup A for the H 8753D Option 011 RF Output Correction Constants . . 3-11 3-3. Setup B for the H 8753D Option 011 RF Output Correction Constants . .
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Page 66 Adjustments and orrection onstants This chapter has the following adjustment procedures: A9 CC Jumper ositions Source Default Correction Constants (Test 44) Source retune Default Correction Constants (Test 45) Analog Bus Correction Constants (Test 46) RF Output ower Correction Constants (Test 47) Source retune Correction Constants (Test 48) Display Intensity Correction Constants (Test 49) IF Amplier Correction Constants (Test 51)
Page 67: 3-2 Adjustments And Correction Constants
H 8753D Option 011 Table 3-1 lists the additional service procedures which you must perform to ensure that the instrument is working correctly, following the replacement of an assembly. erform the procedures in the order that they are listed in the table.
Page 68 Table 3-1 Related Service Procedures (2 of 3) eplaced Adjustments Verication Assembly Correction Constants (CC) 9 CPU 9CC Jumper Positions Output Power Serial Number CC (Test 55) bsolute mplitude ccuracy Option Number CC (Test 56) Frequency Response Display Intensity and Focus CC (Test 49) Dynamic ccuracy Source Def CC (Test 44) Pretune Default CC (Test 45)
Page 69 Table 3-1 Related Service Procedures (3 of 3) eplaced Adjustments Verication Assembly Correction Constants (CC) 12 Reference 9CC Jumper Positions Frequency Range and ccuracy High/Low Band Transition Frequency ccuracy System Verication EEPROM Backup Disk 13 Fractional-N 9CC Jumper Positions Spectral Purity ( nalog) Fractional-N Spur and (other spurious signals)
Page 70: A9 Cc Jumper Ositions
A9 CC Jumper ositions 1. Remove the power line cord from the analyzer. 2. Set the analyzer on its side. 3. Remove the two lower-rear corner bumpers from the bottom of the instrument with the T-10 TORX screwdriver. 4. Loosen the captive screw on the bottom cover's back edge, using a T-15 TORX screwdriver.
Page 71: Source Default Correction Constants (Test 44)
Source Default Correction Constants (Test 44) Analyzer warm-up time: 0 minutes. This internal adjustment routine writes default correction constants for the source power accuracy. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 44 5 x 5 2.
Page 72: Source Retune Default Correction Constants (Test 45)
Source retune Default Correction Constants (Test 45) Analyzer warm-up time: 0 minutes. This adjustment writes default correction constants for rudimentary phase lock pretuning accuracy. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 45 5 x 5 2.
Page 73: Analog Bus Correction Constant (Test 46)
Analog Bus Correction Constant (Test 46) Analyzer warm-up time: 0 minutes. This procedure calibrates the analog bus by using three reference voltages: ground, +0.37 V and +2.5 V. The calibration data is stored as correction constants in EE ROMs. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5...
Page 74: Rf Output Ower Correction Constants (Test 47)
RF Output ower Correction Constants (Test 47) Required Equipment and Tools ower meter H 437B or H 438A ower sensor H 8482A ower sensor (for Option 006 analyzers) H 8481A ower splitter (2) H 11667A Option 001 Attenuator 20 dB H 8491A Option 020 H -IB cable H 10833A...
Page 75: Ower Sensor Calibration Factor Entry
Power Sensor Calibration Factor Entry 5. Zero and calibrate the power meter and sensor. 6. ress ERVICE MENU TE T OPTION LO / EN R LI T SYSTEM 5 to access the calibration factor menu for power sensor CAL FACTOR EN OR A A (H 8482A).
Page 76 9. reset, zero, and calibrate the power meter and the H 8482A power sensor. 10. Connect the equipment as shown in Figure 3-2. Figure SETU A here. Figure 3-2. Setup A for the HP 8753 Option 011 RF Output Correction Constants 11. ress CW FREQ...
Page 77 If you are using the H 437B power meter, zero and calibrate the H 8482A sensor. Figure SETU B here. Figure 3-3. Setup B for the HP 8753 Option 011 RF Output Correction Constants 3-12 Adjustments and Correction Constants RAFT 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ...
Page 78: Source Correction Routine
22. Connect the equipment as shown in Figure 3-4, using splitter #2 and the power sensor requested by the prompt. Figure SETU C here. Figure 3-4. Setup C for the HP 8753 Option 011 RF Output Correction Constants RAFT Adjustments and Correction Constants 3-13 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ...
Page 79 23. ress CONTINUE 24. Observe the analyzer display for the results of the adjustment routine: If the analyzer shows , press and you have completed this OURCE Cor DONE PRESET 5 procedure. If the analyzer fails this routine, refer to \Source Troubleshooting." 3-14 Adjustments and Correction Constants RAFT 3/21/106 15:11...
Page 80: Source Retune Correction Constants (Test 48)
Source retune Correction Constants (Test 48) Analyzer warm-up time: 0 minutes. This procedure generates pretune values for correct phase-locked loop operation. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 48 5 x 5 2. Observe the analyzer for the results of this adjustment routine: If the analyzer displays , you have completed this procedure.
Page 81: Display Intensity Correction Constants (Test 49)
Display Intensity Correction Constants (Test 49) Required Equipment and Tools hotometer Tektronix J16 photometer robe Tektronix J6503 Light occluder Tektronix 016-0305-00 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up time: 0 minutes.
Page 82: Maximum Intensity Adjustment
4. ress at the prompt to alter the correction constants. EXECUTE TE T Alternating vertical bars of three dierent intensities will be drawn on the display. Each bar has a number written below it: 0, 1, or 2. 5. Adjust the analyzer front panel knob until the vertical bar labeled \1" is just barely visible against the black border.
Page 83: Operating Default Intensity Adjustment
If the photometer registers a reading of less than 90 Nits (or 150 Nits without the bezel), and greater than 60 Nits (or 100 without the bezel), proceed to \Operating Default Intensity Adjustment." If the photometer registers a reading of less than 60 Nits (or 100 Nits without the bezel), the display is faulty.
Page 84 IF Amplifier Correction Constants (Test 51) Required Equipment and Tools ower splitter H 11667A Option 001 RF cable (2) H 11500B Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up Time: 0 minutes.
Page 85 4. ress and observe the analyzer for the results of the adjustment routine: CONTINUE is displayed, you have completed this procedure. DONE is displayed, check that the RF cables are connected from the power splitter to R FAIL input and A (or B) input. Then repeat this adjustment routine. If the analyzer continues to fail the adjustment routine, refer to the \Digital Control Troubleshooting"...
Page 86 ADC Offset Correction Constants (Test 52) Analyzer warm-up time: 0 minutes. These correction constants improve the dynamic accuracy by shifting small signals to the most linear part of the ADC quantizing curve. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 52 5 x 5 This routine takes about three minutes.
Page 87: Sampler Magnitude And Hase Correction Constants (Test 53)
This adjustment procedure corrects the overall atness of the microwave components that make up the analyzer receiver and test separation sections. This is necessary for the H 8753D Option 011 to meet the published test port atness. 1. If you just completed \Source Correction Constants (Test 47)," continue this procedure with step 8.
Page 88: Ower Sensor Calibration Factor Entry
Power Sensor Calibration Factor Entry 5. ress ERVICE MENU TE T OPTION LO / EN R LI T SYSTEM 5 to access the calibration factor menu for power sensor CAL FACTOR EN OR A A (H 8482A). 6. Build a table of up to twelve points (twelve frequencies with their calibration factors). To enter each point, follow these steps: a.
Page 89 Figure SAM R here. Figure 3-7. Input R Sampler Correction Setup 12. ress CONTINUE The analyzer starts the rst part of the automatic adjustment. This part will take about seven minutes. After the analyzer has nished the rst part of the For Option 006 Instruments Only: adjustment, disconnect the H 8482A (sensor A) from the power splitter, and replace it with the H 8481A (sensor B) for the 6 GHz measurement.
Page 90 Figure SAM A here. Figure 3-8. Input A Sampler Correction Setup 16. ress . The analyzer starts the second part of the automatic adjustment. CONTINUE RAFT Adjustments and Correction Constants 3-25 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 91 17. Follow the analyzer prompt to move the cable from input A to input B, as shown in Figure 3-9. Figure SAM B here. Figure 3-9. Input B Sampler Correction Setup 18. ress . The analyzer starts the third part of the automatic adjustment. CONTINUE 19.
Page 92: Cavity Oscillator Frequency Correction Constants (Test 54)
Cavity Oscillator Frequency Correction Constants (Test 54) Required Equipment and Tools Low pass lter /N 9135-0198 ower splitter H 11667A Option 001 Attenuator 20 dB H 8491A Option 020 RF cable set H 11851B Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797...
Page 93 1. Connect the equipment shown in Figure 3-10. Figure CAVOSC here. Figure 3-10. Setup for Cavity Oscillator Frequency Correction Constant Routine 2. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 54 5 x 5 During this adjustment routine, you will see several softkeys: Sweeps the current frequency span: you may press it repeatedly for CONTINUE additional sweeps of the current frequency span.
Page 94: Spur Search Rocedure With A Filter
Figure TARGET here. Figure 3-11. Typical isplay of Spurs with a Filter Spur Search Procedure with a Filter 5. ress and the other softkeys as required to observe and EXECUTE TE T YE CONTINUE mark the target spur. The target spur will appear to the right of a second spur, similar to Figure 3-11.
Page 95: Spur Search Rocedure Without A Filter
7. Observe the analyzer for the results of this adjustment routine: If the analyzer displays , you have completed this procedure. Cav Osc Cor DONE If the analyzer does not display , repeat this procedure. DONE If the analyzer continues not to display , refer to the \Source Troubleshooting"...
Page 96 On occasion the largest spur appears as one of a group of ve evenly spaced spurs as shown in Figure 3-13. The target spur is again the fourth from the left (not the fth, right-most spur). Figure TARGET2 here. Figure 3-13. Target Spur in isplay of Five Spurs Figure 3-14 shows another variation of the basic four spur pattern: some up, some down, and the target spur itself almost indistinguishable.
Page 97 9. Rotate the front panel knob to position the marker on the target spur. Then press ELECT and observe the analyzer for the results of the adjustment routine: If the analyzer displays , you have completed this procedure. Cav Osc Cor DONE If the analyzer displays , refer to the \Source Troubleshooting"...
Page 98: Serial Number Correction Constant (Test 55)
Serial Number Correction Constant (Test 55) Analyzer warm-up time: 5 minutes. This procedure stores the analyzer serial number in the A9 C U assembly EE ROMs. Caution erform this procedure ONLY if the A9 C U assembly has been replaced. 1.
Page 99 6. Observe the analyzer for the results of the routine: If the analyzer displays the message , you have completed this erial Cor DONE procedure. If the analyzer does not display , then either the serial number entered in steps 3 DONE and 4 did not match the required format or a serial number was already stored.
Page 100: Option Numbers Correction Constant (Test 56)
Option Numbers Correction Constant (Test 56) This procedure stores instrument option(s) information in A9 C U assembly EE ROMs. You can also use this procedure to remove a serial number or install an option, with the unique as referred to in \Serial Number Correction Constant." 1.
Page 101: Calibration Kit Default Correction Constants (Test 57)
Calibration Kit Default Correction Constants (Test 57) This internal adjustment test writes default calibration kit denitions (device model coecients) into EE ROM's. 1. ress ERVICE MENU TE T EXECUTE TE T YE PRESET 5 SYSTEM 5 57 5 x 5 2.
Page 102: Initialize Ee Roms (Test 58)
Initialize EE ROMs (Test 58) This service internal test performs the following functions: destroys all correction constants and all un-protected options initializes certain EE ROM address locations to zeroes replaces the display intensity correction constants with default values This routine alter the serial number or Options 002, 006 and 010 WILL NOT correction constants.
Page 103: Ee Rom Backup Disk Rocedure
EE ROM Backup Disk rocedure Required Equipment and Tools 3.5-inch oppy disk H 92192A (box of 10) Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 The correction constants, that are unique to your instrument, are stored in EE ROM on the A9 controller assembly.
Page 104: How To Retrieve Correction Constant Data From The Ee Rom Backup Disk
5. Write the following information on the disk label: analyzer serial number today's date \EE ROM Backup Disk" How to Retrieve Correction Constant Data from the EEPROM Backup Disk 1. Insert the \EE ROM Backup Disk" into the analyzer disk drive. 2.
Page 105: Vertical Osition And Focus Adjustments
Vertical osition and Focus Adjustments Required Equipment and Tools Torx screwdriver T-15 Non-conductive at head screwdriver,-2 inches /N 8830-0024 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up time: 0 minutes.
Page 106: Display Degaussing (Demagnetizing)
Display Degaussing (Demagnetizing) Required Equipment and Tools Any CRT demagnetizer or bulk tape eraser Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 As with all color monitors, the display is very susceptible to external magnetic elds. These elds can originate from many sources, including unshielded motors, metal frame tables, and from the earth itself.
Page 107: Fractional-N Frequency Range Adjustment
Fractional-N Frequency Range Adjustment Required Equipment and Tools TORX screwdriver T-15 Non-metallic adjustment tool /N 8830-0024 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up time: 0 minutes This procedure centers the fractional-N VCO (voltage controlled oscillator) in its tuning range to insure reliable operation of the instrument.
Page 108 Figure RANGE here. Figure 3-17. Fractional-N Frequency Range Adjustment isplay RAFT Adjustments and Correction Constants 3-43 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 109 8. To ne-tune this adjustment, press CW FREQ ERVICE MENU PRESET 5 MENU 5 SYSTEM 5 to set \FRAC N TUNE" to 29.2 MHz. ANALOG BU ON ERVICE MODE FRACN TUNE ON 9. ress PARAMETER ANALOG IN Aux Input MORE MEAS 5 29 5 x 5 MARKER 5 FORMAT 5 REAL...
Page 110: Frequency Accuracy Adjustment
Frequency Accuracy Adjustment Required Equipment and Tools Spectrum analyzer H 8563E ower splitter H 11667A Option 001 RF cable 24-inch (2) H 11500B Non-metallic adjustment tool /N 8830-0024 TORX screwdriver T-15 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797...
Page 111 5. On the H 8753D Option 011, press CW FREQ PRESET 5 MENU 5 2.9 5 G/n 5 5.9 5 G/n 5 Option 006). 6. No adjustment is required when the spectrum analyzer measures 2.9 GHz ;5 kHz (or 5.9 5 kHz for Option 006).
Page 112: H 8753D Option 011 With Option 1D5 Only
HP 8753D Option 011 with Option 1D5 Only 8. Connect the BNC to BNC jumper between the \EXT REF" and the \10 MHz recision Reference" as shown in Figure 3-20. 9. Use a at-head screwdriver to remove the screw that covers the precision frequency adjustment as shown in Figure 3-20.
Page 113: High/Low Band Transition Adjustment
High/Low Band Transition Adjustment Required Equipment and Tools Non-metallic adjustment tool /N 8830-0024 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up time: 0 minutes. This adjustment centers the VCO (voltage controlled oscillator) of the A12 reference assembly for high and low band operations.
Page 114 Figure HLADJ here. Figure 3-22. High/Low Band Adjustment Locations RAFT Adjustments and Correction Constants 3-49 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 115: Fractional-N Spur Avoidance And Fm Sideband Adjustment
Fractional-N Spur Avoidance and FM Sideband Adjustment Required Equipment and Tools Spectrum analyzer H 8563E ower splitter H 11667A Option 001 Attenuator 10 dB H 8491A Option 010 BNC cable /N 8120-1840 H -IB cable H 10833A/B/C/D RF cable set H 11851B Non-metallic adjustment tool /N 8830-0024...
Page 116 1. Connect the equipment as shown in Figure 3-23. 2. Make sure the instruments are set to their default H -IB addresses: H 8753D Option 011 = 16, Spectrum Analyzer = 18. Figure FRACS UR here. Figure 3-23. Fractional-N Spur Avoidance and FM Sideband Adjustment Setup 3.
Page 117 Figure A I here. Figure 3-24. Location of API and 100 kHz Adjustments 7. On the spectrum analyzer, set the center frequency for 676.051105 MHz. 8. On the H 8753D Option 011, press CW FREQ MENU 5 676.048 05 5 M/ 9.
Page 118 In Case of Diculty If this adjustment can not be performed satisfactorily, repeat the entire procedure. Or else replace the A13 board assembly. RAFT Adjustments and Correction Constants 3-53 3/21/106 15:11 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 119: Source Spur Avoidance Tracking Adjustment
Source Spur Avoidance Tracking Adjustment Required Equipment and Tools TORX screwdriver T-15 BNC alligator clip adapter /N 8120-1292 BNC to BNC cable /N 8120-1840 Antistatic wrist strap /N 9300-1367 Antistatic wrist strap cord /N 9300-0980 Static-control table mat and earth ground wire /N 9300-0797 Analyzer warm-up time: 0 minutes.
Page 120 3. ress PRESET 5 CENTER 5 400 5 M/ 5 SPAN 5 50 5 M/ 4. ress ERVICE MENU ANALOG BU ON PARAMETER SYSTEM 5 MEAS 5 ANALOG IN Aux Input 5 x 5 5. ress MORE REAL MARKERREFERENCE FORMAT 5 SCALE REF 5 0 5 k/m 5 6.
Page 121: Unprotected Hardware Option Numbers Correction Constants
Unprotected Hardware Option Numbers Correction Constants Analyzer warm-up Time: None. This procedure stores the instrument's unprotected option(s) information in A9 C U assembly EE ROMs. 1. Make sure the A9 CC jumper is in the ALT (ALTER) position. 2. Record the installed options that are printed on the rear panel of the analyzer. 3.
Page 122 6. After you have entered all of the instrument's hardware options, press the following keys: ERVICE MENU FIRMWARE REVI ION SYSTEM 5 7. View the analyzer display for the listed options. 8. When you have entered all of the hardware options, return the A9 CC jumper to the NRM (NORMAL) position.
Page 123: Sequences For Mechanical Adjustments
Sequences for Mechanical Adjustments The network analyzer has the capability of automating tasks through a sequencing function. The following adjustment sequences are available through InterNet. Fractional-N Frequency Range Adjustment High/Low Band Transition Adjustment Fractional-N Spur Avoidance and FM Sideband Adjustment How to Load Sequences from Disk 1.
Page 124 How to Set Up the High/Low Band Transition Adjustments 1. ress (where X is the sequence number). EQ X HBLBADJ PRESET 5 2. Observe the VCO tuning trace: If the left half of trace = 0 1000 mV and right half of the trace = 100 to 200 mV higher (one to two divisions), no adjustment is necessary.
Page 125 SCALE/REF .1 x1 Sequences for the Fractional- Frequency Range Adjustment |Sequence FNADJ sets up A14 (FRAC N Digital) VCO.| DIS LAY DUAL CHAN ON SYSTEM SERVICE MENU ANALOG BUS ON MENU NUMBER OF OINTS 11 x1 COU LED CHAN OFF START 36 M/u STO 60.75 M/u MENU...
Page 126 Sequences for the Fractional- Avoidance and FM Sideband Adjustment |Sequence A IADJ sets up the fractional-N A I spur adjustments.| TITLE S 2.5K ERI HERAL H IB ADDR 18 x1 TITLE TO ERI HERAL WAIT x 0 x1 TITLE AT 0DB TITLE TO ERI HERAL WAIT x 0 x1...
Page 127 AUSE TITLE CF 676.003450MZ TITLE TO ERI HERAL WAIT x 0 x1 CW FREQ 676.000450M/u TITLE ADJ A13 A I3 SEQUENCE AUSE TITLE CF 676.003045MZ TITLE TO ERI HERAL WAIT x 0 x1 CW FREQ 676.000045M/u TITLE ADJ A13 A I4 3-62 Adjustments and Correction Constants RAFT 3/21/106 15:11...
Page 128 If the Operator's Check Failed ....Step 3. HP-IB Systems Check .....
Page 129 4-9. Typical Measurement Trace ..... 4-16 4-10. HP 8753D Option 011 Overall Block Diagram ... . . 4-20...
Page 130 Locate the specic troubleshooting procedures to identify the assembly or peripheral at fault. To identify the portion of the analyzer at fault, follow these procedures: Step 1. Initial Observations Step 2. Operator's Check Step 3. HP-IB System Check Step 4. Faulty Group Isolation RAFT Start Troubleshooting Here 4-1 3/21/106 15:12...
Page 131 Replacement Sequence The following steps show the sequence to replace an assembly in an HP 8753D Option 011 Network nalyzer. 1. Identify the faulty group. Refer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 132 Step 1. Initial Observations nitiate the Analyzer Self-Test 1. Disconnect all devices and peripherals from the analyzer (including all test set interconnects). 2. Switch on the analyzer and press RESET 3. Watch for the indications shown in Figure 4-1 to determine if the analyzer is operating correctly.
Page 133 Step 2. Operator's Check This procedure veries with 80% condence that the analyzer is functioning properly. Equipment 20 dB attenuator HP 8491 Option 020 RF cable set HP 11851B Two-way power splitter HP 11667 Option 001 Procedure 1. Switch on the analyzer for a 30 minute warm-up.
Page 134 Visually inspect the connectors. Retest or refer to \Step 4. Faulty Group Isolation" as indicated. Step 3. HP-IB Systems Check Check the analyzer's HP-IB functions with a passive peripheral (such as a nown wor ing plotter, printer, or disk drive).
Page 135 \Troubleshooting Systems with Controllers", or the \Step 4. Faulty Group Isolation" section in this chapter. If the result is not a copy of the analyzer display, suspect the HP-IB function of the analyzer. Refer to Chapter 6, \Digital Control Troubleshooting."...
Page 136 RESET SAVE/RECALL RECALL TATE If the resultant trace starts at 1 MHz, HP-IB is functional in the analyzer. Continue with \Troubleshooting Systems with Multiple Peripherals", \Troubleshooting Systems with Controllers", or the \Step 4. Faulty Group Isolation" section in this chapter.
Page 137 Step 4. Faulty Group Isolation Use the following procedures only if you have read the previous sections in this chapter and you think the problem is in the analyzer. These are simple procedures to verify the four functional groups in sequence, and determine which group is faulty. The four functional groups are: power supplies digital control...
Page 138 Power Supply Check the Rear Panel LEDs Switch on the analyzer. Notice the condition of the two LEDs on the 15 preregulator at rear of the analyzer. See Figure 4-4. The upper (red) LED should be o. The lower (green) LED should be on. Figure RE RLED4 here.
Page 139 Digital Control Observe the Power Up Sequence Switch the analyzer power o, then on. The following should take place within a few seconds: 1. On the front panel observe the following: ll six amber LEDs illuminate. The amber LEDs go o after a few seconds, except the CH 1 LED. See Figure 4-5.
Page 140 If the analyzer indicates failure but does not identify the test, press to search for the failed test. Then refer to Chapter 6, \Digital Control Troubleshooting." Likewise, if the response to front panel or HP-IB commands is unexpected, troubleshoot the digital control group. 2. Perform the nalog Bus test. Press...
Page 141 Source Phase Lock Error Messages The error messages listed below are usually indicative of a source failure or improper instrument conguration. (Ensure that the R channel input is receiving at least 0 35 dBm power). Continue with this procedure. NO IF FOUND: CHECK R INPUT LEVEL The rst IF was not detected during the pretune stage of phase lock.
Page 142 Check Source Output Power 1. Connect the equipment as shown in Figure 4-6. Figure ESSPC4 here. Figure 4-6. Equipment Setup for Source Power Check 2. Zero and calibrate the power meter. Press on the analyzer to initialize the RESET instrument. 3.
Page 143 Figure BUS4 here. Figure 4-7. ABUS Node 16: 1V/GHz If any of the above procedures provide unexpected results, or if error messages are present, refer to Chapter 7, \Source Troubleshooting." 4-14 Start Troubleshooting Here RAFT 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 144 Receiver Observe the R, A, and B nput Traces 1. Connect the equipment as shown in Figure 4-8 below. Figure REC4 here. Figure 4-8. Equipment Setup 2. Press AUTO CALE MARKERREFERENCE RESET MEAS SCALE REF MARKER FCTN 3. Observe the measurement trace displayed by the R input. The trace should have about the same atness as the trace in Figure 4-9.
Page 145 Figure TMT4 here. Figure 4-9. Typical Measurement Trace If the source is working, but the R, , or B input traces appear to be in error, refer to Chapter 8, \Receiver Troubleshooting." The following symptoms may also indicate receiver failure. Receiver Error Messages CAUTION: OVERLOAD ON INPUT A;...
Page 146 The error messages above indicate that you have exceeded approximately +3 dBm at one of the input ports. The RF output power is automatically switched o. The annotation P appears in the left margin of the display to indicate that the power trip function has been activated.
Page 147 ccessories If the analyzer has passed all of the above checks but is still making incorrect measurements, suspect the system accessories. ccessories such as RF or interconnect cables, calibration and verication kit devices, adapters, and test sets can all induce system problems. Recongure the system as it is normally used and reconrm the problem.
Page 148 RAFT Start Troubleshooting Here 4-19 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 149 (oversized art) /08753/90261/egs/sg614d.hpg Figure 4-10. HP 8753 Option 011 Overall Block iagram 4-20 Start Troubleshooting Here RAFT 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 150 ontents . Power Supply Troubleshooting ssembly Replacement Sequence ....Simplied Block Diagram ..... . . Start Here .
Page 151 Figures 5-1. Power Supply Group Simplied Block Diagram ... . . 5-2. Location of 15 Diagnostic LEDs ....5-3.
Page 152: Power Supply Troubleshooting
Power Supply Troubleshooting Use this procedure only if you have read Chapter 4, \Start Troubleshooting Here." Follow the procedures in the order given, unless: an error message appears on the display, refer to \Error Messages" near the end of this chapter.
Page 153: Ssembly Replacement Sequence
Replacement Sequence The following steps show the sequence to replace an assembly in an HP 8753D network analyzer. 1. Identify the faulty group. Refer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 154: Start Here
Simplified Block Diagram Figure 5-1 shows the power supply group in simplied block diagram form. Refer to the detailed block diagram of the power supply (Figure 5-8) located at the end of this chapter to see voltage lines and specic connector pin numbers. Figure BLOCK5 here.
Page 155: Measure The Post Regulator Voltages
Figure LED5 here. Figure 5-2. Location of A15 iagnostic LE s heck the Green LEDs on A8 Remove the top cover of the analyzer and locate the 8 post regulator; use the location diagram under the top cover if necessary. Check to see if the green LEDs on the top edge of 8 are all on.
Page 156 Figure TPL5 here. Figure 5-3. A8 Post Regulator Test Point Locations Table 5-1. A8 Post Regulator Test Point Voltages Supply Range +65 V +64.6 to +65.4 AGND +5 VD +4.9 to +5.3 SDIS 4.4 to 2.6VPP (probe power) 2. to + 5 V + 4.5 to + 5.5 +5 VU...
Page 157: If The Green Led On 15 Is Not On Steadily
If the Green LED on 15 is not ON Steadily If the green LED is not on steadily, the line voltage is not sucient to power the analyzer. heck the Line Voltage, Selector Switch, and Fuse Check the main power line cord, line fuse, line selector switch setting, and actual line voltage to see that they are all correct.
Page 158: If The Red Led On 15 Is On
If the Red LED on 15 is ON If the red LED is on or ashing, the power supply is shutting down. Use the following procedures to determine which assembly is causing the problem. heck the A8 Post Regulator 1. Switch o the analyzer. 2.
Page 159 Verify the A15 Preregulator Verify that the 15 preregulator is supplying the correct voltages to the 8 post regulator. Use a voltmeter with a small probe to measure the output voltages of 15W1's plug. Refer to Table 5-2 and Figure 5-6. If the voltages are not within tolerance, replace 15.
Page 160 heck for a Faulty Assembly This procedure checks for a faulty assembly that might be shutting down the 15 preregulator via one of the following lines (also refer to Figure 5-1): 15W1 connecting to the 8 post regulator the +5VCPU line through the motherboard the +5VDIG line through the motherboard Do the following: 1.
Page 161: Inspect The Motherboard
heck the Operating Temperature The temperature sensing circuitry inside the 15 preregulator may be shutting down the supply. Make sure the temperature of the open air operating environment does not exceed 55 C (131 F), and that the analyzer fan is operating. If the fan does not seem to be operating correctly, refer to \Fan Troubleshooting"...
Page 162: If The Green Leds On 8 Are Not Ll On
If the Green LEDs on 8 are not ll ON The green LEDs along the top edge of the 8 post regulator are normally on. Flashing LEDs on 8 indicate that the shutdown circuitry on the 8 post regulator is protecting power supplies from overcurrent conditions by repeatedly shutting them down.
Page 163 14 fractional-N digital 19 graphics processor (disconnect W14, 18W1, and W20) 4. Switch on the analyzer and observe the green LEDs on 8. If any of the green LEDs are o or ashing, it is not likely that any of the assemblies listed above is causing the problem.
Page 164 Cross reference all assemblies that use the power supplies whose 8 LEDs went out when 8TP4 (SDIS) was connected to chassis ground. RAFT Power Supply Troubleshooting 5-13 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 165 Make a list of these assemblies. Delete the following assemblies from your list as they have already been veried earlier in this section. 10 digital IF 11 phase lock 12 reference 13 fractional-N analog 14 fractional-N digital 18 display 19 graphics processor 4.
Page 166: Inspect The Motherboard
Inspect the Motherboard Inspect the 17 motherboard for solder bridges and shorted traces. In particular, inspect the traces that carry the supplies whose LEDs faulted when 8TP4 (SDIS) was grounded earlier. RAFT Power Supply Troubleshooting 5-15 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 167: Error Messages
Error Messages Three error messages are associated with the power supplies functional group. They are shown here. OWER SU LY SHUT DOWN! One or more supplies on the 8 post regulator assembly is shut down due to one of the following conditions: overcurrent, overvoltage, or undervoltage.
Page 168 Refer to Figure 5-7 and carefully measure the power supply voltages at the front panel RF probe connectors. Figure PROBE5 here. Figure 5-7. Front Panel Probe Power Connector Voltages 1. If the correct voltages are present, troubleshoot the probe. 2. If the voltages are not present, check the +15 V and 12.6 V green LEDs on 8. If the LEDs are on, there is an open between the 8 assembly and the front panel probe power connectors.
Page 169 heck the Fuses and Isolate A8 Check the fuses associated with each of these supplies near the 8 test points. If these fuses keep burning out, a short exists. Try isolating 8 by removing it from the motherboard connector, but keeping the cable 15W1 connected to 8J2. Connect a jumper wire from 8TP2 to chassis ground.
Page 170: Fan Troubleshooting
Fan Troubleshooting Fan Speeds The fan speed varies depending upon temperature. It is normal for the fan to be at high speed when the analyzer is just switched on, and then change to low speed when the analyzer is cooled. heck the Fan Voltages If the fan is dead, refer to the 8 post regulator block diagram (Figure 5-8) at the end of this chapter.
Page 171: Intermittent Problems
Intermittent Problems PRESET states that appear spontaneously (without pressing ) typically signal a RESET power supply or 9 CPU problem. Since the 9 CPU assembly is the easiest to substitute, do so. If the problem ceases, replace the 9. If the problem continues, replace the 15 preregulator assembly.
Page 172 (oversized art) /08753/90261/egs/sg629d.hpg Figure 5-8. Power Supply Block iagram RAFT Power Supply Troubleshooting 5-21 3/21/106 15:12 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 173 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 174 ontents . Source Troubleshooting ssembly Replacement Sequence ....Before You Start Troubleshooting ....Power .
Page 175 Phase Lock Check by Signal Examination ....7-32 Source Group Troubleshooting ppendix ....7-34 Troubleshooting Source Problems with the nalog Bus .
Page 176 Figures 7-1. Basic Phase Lock Error Troubleshooting Equipment Setup ..7-2. Jumper Positions on the 9 CPU ....7-3.
Page 177 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 178: Source Troubleshooting
Source Troubleshooting Use this procedure only if you have read Chapter 4, \Start Troubleshooting Here." This chapter is divided into two troubleshooting procedures for the following problems: Incorrect power levels: Perform the \Power" troubleshooting checks. Phase lock error: Perform the \Phase Lock Error" troubleshooting checks. The source group assemblies consist of the following: 3 source 4 sampler/mixer...
Page 179: Ssembly Replacement Sequence
Replacement Sequence The following steps show the sequence to replace an assembly in an HP 8753D Network nalyzer. 1. Identify the faulty group. Refer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 180: Power
Power If the analyzer output power levels are incorrect but no phase lock error is present, perform the following checks in the order given: . Source Default Correction Constants (Test 44) To run this test, press ERVICE MENU TE T EXECUTE TE T RESET SYSTEM...
Page 181: Phase Lock Error
Phase Lock Error Figure PLE7 here. Figure 7-1. Basic Phase Lock Error Troubleshooting Equipment Setup Troubleshooting tools include the assembly location diagram and phase lock diagnostic tools. The assembly location diagram is on the underside of the instrument top cover. The diagram shows major assembly locations and RF cable connections.
Page 182 d. Loosen the captive screw on the bottom cover's back edge. e. Slide the cover toward the rear of the instrument. f. Move the jumper to the LT position as shown in Figure 7-2. g. Replace the bottom cover, corner bumpers, and power cord. Figure JUMP7 here.
Page 183: Sampler/Mixer Check
A4 Sampler/Mixer Check The 4, 5, and 6 (R, and B) sampler/mixers are identical. ny sampler can be used to phase lock the source. To eliminate the possibility of a bad R sampler, follow this procedure: 1. Connect the power splitter, RF cable and attenuator to inputs (or B) and R as shown in Figure 7-1.
Page 184: Source And 11 Phase Lock Check
A3 Source and A Phase Lock Check This procedure checks the source and part of the phase lock assembly. It opens the phase-locked loop and exercises the source by varying the source output frequency with the 11 pretune D C. If the analyzer failed internal test 48, default pretune correction constants Note were stored which may result in a constant oset of several MHz.
Page 185 5. The signal observed on an oscilloscope should be as solid as the signal in Figure 7-4. Figure W VE7 here. Figure 7-4. Waveform Integrity in SRC Tune Mode 6. The signal observed on the spectrum analyzer will appear jittery as in Figure 7-5 (b), not solid as in Figure 7-5 (a).
Page 186 If the frequency changes are not correct, continue with \YO Coilk Drive Check with nalog Bus." If the power output changes are not correct, check analog bus node 3. a. Press ERVICE MENU ANALOG BU ON PARAMETER SYSTEM MEAS ANALOG IN Aux Input MORE REAL FORMAT b.
Page 187 YO Coil rive Check with Analog Bus If the analog bus is not functional, perform the \YO Drive Coil Check with Note Oscilloscope" test. 1. Press ERVICE MENU ANALOG BU ON ERVICE MODE RESET SYSTEM OURCE PLL OFF PARAMETER ANALOG IN Aux Input COUNTER: ANALOG BU MEAS 2.
Page 188: Reference Check
Use the large extender board for easy access to the voltage points. The Note extender board is included with the HP 8753 Tool Kit. See Chapter 13, \Replaceable Parts," for part numbers and ordering information. 1. Connect oscilloscope probes to 11P1-1 and 11P1-2. The YO coil drive signal is actually two signals whose voltage dierence drives the coil.
Page 189 Analog Bus Method 1. Press ERVICE MENU ANALOG BU ON PARAMETER RESET SYSTEM MEAS to switch on the analog bus and its counter. ANALOG IN Aux Input ANALOG BU 2. Press to count the frequency of the 100 kHz signal. 3.
Page 190: Oscilloscope Method
If the counter readings are incorrect at the 500 kHz and 2 MHz settings only, go to \FN LO at 12 Check." If all the counter readings are incorrect at all three CW frequencies, the counter may be faulty. Perform the \Oscilloscope Method" check of the signals described below. (If the signals are good, either the 10 or 14 assemblies could be faulty.) Oscilloscope Method You need not use the oscilloscope method unless the analog bus is non-functional or any of the...
Page 191: 100 Khz Pulses
100 kHz Pulses The 100 kHz pulses are very narrow and typically 1.5 V in amplitude. You may have to increase the oscilloscope intensity to see these pulses. (See Figure 7-8.) Figure SH RP7 here. Figure 7-8. Sharp 100 kHz Pulses at A13TP5 (any frequency) 7-14 Source Troubleshooting RAFT 3/21/106 15:13...
Page 192: Plref Waveforms
PLREF Waveforms REF is the buered PLREF+ signal. The 1st IF is phase locked REF Signal At A11TP1 Pin 9. to this signal. Use an oscilloscope to observe the signal at the frequencies noted in Figure 7-9 and Figure 7-10. In high band the REF signal is a constant 1 MHz square wave as High Band REF Signal.
Page 193: Low Band Ref Signal
In low band this signal follows the frequency of the RF output signal. Low Band REF Signal. Figure 7-10 illustrates a 5 MHz CW signal. Figure REFSIG7 here. Figure 7-10. REF Signal at A11TP9 (5 MHz CW) If REF looks good, skip ahead to \4 MHz Reference Signal." If REF is bad in low band, continue with \FN LO at 12 Check."...
Page 194 FN LO at A12 Check 1. Use an oscilloscope to observe the FN LO from 14 at the cable end of 14J2. Press to switch on the ERVICE MENU ERVICE MODE FRACN TUNE ON RESET SYSTEM fractional-N service mode. 2. Use the front panel knob to vary the frequency from 30 to 60 MHz. The signal should appear similar to Figure 7-11.
Page 195: Mhz Reference Signal
4 MHz Reference Signal This reference signal is used to control the receiver. If faulty, this signal can cause apparent source problems because the CPU uses receiver data to control the source. t 12TP9 it should appear similar to Figure 7-12. Figure REFS7 here.
Page 196: Degree Phase OSet Of 2Nd Lo Signals In High Band
2N LO Waveforms The 2nd LO signals appear dierent in phase and shape at dierent frequencies. Refer to Table 7-3 for convenient test points. In high band, the 2nd LO is 996 90 egree Phase Offset of 2nd LO Signals in High Band. kHz.
Page 197: In-Phase 2Nd Lo Signals In Low Band
The 2nd LO signals in low band, as shown in In-Phase 2nd LO Signals in Low Band. Figure 7-14, are not phase shifted. In low band these signals track the RF output with a 4 kHz oset. Figure INPH S7 here. Figure 7-14.
Page 198: L Enref Line
A12 igital Control Signals Check Several digital control signals must be functional for the 12 assembly to operate properly. Check the control lines listed in Table 7-4 with the oscilloscope in the high input impedance setting. Table 7-4. A12-Related igital Control Signals Mnemonic ignal Location...
Page 199: L Hb And L Lb Lines
These complementary signals toggle when the instrument switches from L HB and L LB Lines. low band to high band as illustrated by Figure 7-16. Figure COMPSIG7 here. Figure 7-16. Complementary L HB and L LB Signals (Preset) If all of the digital signals appeared good, the 12 assembly is faulty. A 3/A 4 Fractional-N Check Use the analog bus or an oscilloscope to check the 14 VCO's ability to sweep from 30 MHz to 60 MHz.
Page 200: Vco Range Check With Oscilloscope
If the readings fail the specied limits, perform the \ 14 VCO Exercise." A14 VCO Range Check with Oscilloscope 1. Remove the W9 HI OUT cable ( 14J1 to 7) from the 7 assembly and connect it to an oscilloscope set for 50 ohm input impedance. Switch on the analyzer. 2.
Page 201 Figure HO257 here. Figure 7-18. 25 MHz HI OUT Waveform from A14J1 Figure HO607 here. Figure 7-19. 60 MHz HI OUT Waveform from A14J1 A14 VCO Exercise The nominal tuning voltage range of the VCO is +10 to 5 volts. When the analyzer is in operation, this voltage is supplied by the 13 assembly.
Page 202 Connecting an oscilloscope to 14J2 (labeled LO OUT) and looking for waveforms similar to Figure 7-20. Figure LOW V27 here. Figure 7-20. LO OUT Waveform at A14J2 4. Vary the voltage at 14TP14 from +10 to 5 volts either by: Connecting an appropriate external power supply to 14TP14, or First jumping the +15 V internal power supply from 8TP8 to 14TP14 and then jumping the 5.2 V supply from 8TP10 to 14TP14.
Page 203 A14 ivide-by-N Circuit Check The 13 assembly should still be out of the instrument and the 14 assembly Note on an extender board. 1. Ground 14TP14 and conrm (as in the 14 VCO Exercise) that the VCO oscillates at approximately 50 to 55 MHz. 2.
Page 204: H Mb Line
Figure DCS7 here. Figure 7-21. A14 Generated igital Control Signals This signal is active during the 16 MHz to 31 MHz sweep. The upper trace of H MB Line. Figure 7-22 shows relative inactivity of this signal during preset condition. The lower trace shows its status during a 16 MHz to 31 MHz sweep with inactivity during retrace only.
Page 205: Pulse Generator Check
A7 Pulse Generator Check The pulse generator aects phase lock in high band only. It can be checked with either a spectrum analyzer or an oscilloscope. A7 Pulse Generator Check with Spectrum Analyzer 1. Remove the 7-to- 6 SMB cable (W7) from the 7 pulse generator assembly. Set the analyzer to generate a 16 MHz CW signal.
Page 206 Figure COMB7 here. Figure 7-24. High Quality Comb Tooth at 3 GHz 3. If the signal at the 7 output is good, check the 7-to- 4 cable. 4. If the signal is not as clean as Figure 7-24, observe the HI OUT input signal to the 7 assembly.
Page 207: Pulse Generator Check With Oscilloscope
Figure ST BHO7 here. Figure 7-25. Stable HI OUT Signal in FRACN TUNE Mode A7 Pulse Generator Check with Oscilloscope Perform this check if a spectrum analyzer is not available. 1. Remove the 4-to- 11 SMB cable from the 4 (R) sampler/mixer output. Connect the oscilloscope to the 4 output (1st IF).
Page 208: Phase Lock Check
Figure IFW VE7 here. Figure 7-26. Typical 1st IF Waveform in FRACN TUNE/SRC TUNE Mode Phase Lock Check t this point, the 11 phase lock assembly appears to be faulty (its inputs should have been veried already). Nevertheless, you may elect to use the phase lock diagnostic routines or check the relevant signals at the assembly itself for conrmation.
Page 209: Phase Lock Check With Pll Di G
Phase Lock Check with PLL IAG Refer to \Phase Lock Diagnostic Tools" in \Source Group Troubleshooting ppendix" at the end of this chapter for an explanation of the error messages and the diagnostic routines. Follow the steps there to determine in which state the phase lock is lost. is displayed, conrm that the analog bus is functional and perform the NO IF FOUND \Source Pretune Correction Constants (Test 48)"...
Page 210 Figure FMCOIL7 here. Figure 7-27. FM Coil { Plot with 3 Point Sweep 4. If any of the input signals are not proper, refer to the overall block diagram in Chapter 4, \Start Troubleshooting Here," as an aid to trouble shooting the problem to its source. 5.
Page 211 Source Group Troubleshooting ppendix Troubleshooting Source Problems with the Analog Bus The analog bus can perform a variety of fast checks. However, it too is subject to failure and thus should be tested prior to use. You should have done this in Chapter 4, \Start Troubleshooting Here."...
Page 212 3. Press to pause the phase lock sequence and determine where the source is PLL PAU E trying to tune when lock is lost. Refer to \Source Theory Overview" in Chapter 12, \Theory of Operation," for additional information regarding band related problems. Then use the procedures in this chapter to check source functions at specic frequencies.
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Page 214 ontents . Receiver Troubleshooting ssembly Replacement Sequence ....Receiver Failure Error Messages ....Check the R, , and B inputs .
Page 215 Figures 8-1. Equipment Setup ......8-2. Typical Good Trace ......8-3.
Page 216: Receiver Troubleshooting
Receiver Troubleshooting Use this procedure only if you have read Chapter 4, \Start Troubleshooting Here." Follow the procedures in the order given, unless instructed otherwise. The receiver group assemblies consist of the following: 4/5/6 sampler/mixer assemblies 10 digital IF assembly RAFT Receiver Troubleshooting 8-1 3/21/106 15:13...
Page 217: Ssembly Replacement Sequence
Replacement Sequence The following steps show the sequence to replace an assembly in an HP 8753D Network nalyzer. 1. Identify the faulty group. Refer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 218: Check The R, , And B Inputs
Good inputs produce traces similar to Figure 8-2 in terms of atness. To examine each input trace, do the following: 1. Connect the equipment as shown in Figure 8-1. (The thru cable is HP part number 8120-4781.) Figure SETUP8 here.
Page 219: Troubleshooting When Ll Inputs Look Bad
Figure GOOD8 here. Figure 8-2. Typical Good Trace Troubleshooting When ll Inputs Look Bad Run Internal Tests 18 and 17 1. Press to run the DC PRESET SYSTE SERVI E MENU TESTS EXE UTE TEST oset. 2. Then, when the analyzer nishes test 18, press to run the DC EXE UTE TEST linearity test.
Page 220: Check The 4 Mhz Ref Signal
Check the 4 MHz REF Signal 1. Connect a cable from the RF OUT to input R. 2. Press PRESET 3. Use an oscilloscope to observe the 4 MHz reference signal at 10P2-6. If the signal does not resemble Figure 8-3, troubleshoot the signal source ( 12P2-36) and path.
Page 221 Table 8-1. Signals Required for A10 Assembly Operation nemonic Description Signal Location Source Figure IF 0 igital IF data 0 (LSB) P2-27 A9P2-27 IF 1 igital IF data 1 P2-57 A9P2-57 IF 2 igital IF data 2 P2-28 A9P2-28 IF 3 igital IF data 3 P2-58 A9P2-58...
Page 222 Figure D T L8 here. Figure 8-4. igital ata Lines Observed Using L INTCOP as Trigger Figure CNTRL8 here. Figure 8-5. igital Control Lines Observed Using L INTCOP as Trigger RAFT Receiver Troubleshooting 8-7 3/21/106 15:13 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 223: Troubleshooting When One Or More Inputs Look Good
Troubleshooting When One or More Inputs Look Good Since at least one input is good, all of the common receiver circuitry beyond the multiplexer is functional. Only the status of the individual sampler/mixers and their individual signal paths is undetermined. Check the 4 kHz Signal 1.
Page 224 Check the Trace with the Sampler Correction Constants Off 1. Press PRESET SCALE REF AUTO S ALE 2. The trace is currently being displayed with the sampler correction constants on and should resemble Figure 8-7a. 3. Press SYSTE SERVI E MENU SERVI E MODES MORE SAMPLER OR OFF 4.
Page 225: Check 1St Lo Signal At Sampler/Mixer
Check 1st LO Signal at Sampler/Mixer If the 4 kHz signal is bad at the sampler/mixer assembly, check the 1st LO signal where it enters the sampler/mixer assembly in question. If the 1st LO is faulty, check the 1st LO signal at its output connector on the 7 assembly to determine if the failure is in the cable or the assembly.
Page 226 ontents . Accessories Troubleshooting ssembly Replacement Sequence ....Inspect the ccessories ......Inspect the System's Connectors and Calibration Devices .
Page 227 Figures 9-1. Typical Return Loss Traces of Good and Poor Cables ..9-2. Typical Smith Chart Traces of Good Short (a) and Open (b) ..9-3.
Page 228: Accessories Troubleshooting
Accessories Troubleshooting Use this procedure only if you have read Chapter 4, \Start Troubleshooting Here." Follow the procedures in the order given, unless instructed otherwise. Measurement failures can be divided into two categories: Failures which don't aect the normal functioning of the analyzer but render incorrect measurement data.
Page 229: Ssembly Replacement Sequence
Replacement Sequence The following steps show the sequence to replace an assembly in an HP 8753D Network nalyzer. 1. Identify the faulty group. Refer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 230: Inspect The Ccessories
Inspect the ccessories nspect the System's Connectors and Calibration Devices 1. Check for damaged mating interfaces and loose connector bulkheads on the analyzer's front panel connectors. 2. Check the test set and power splitter connectors for defects as well. 3. Inspect the calibration kit devices for bent or broken center conductors and other physical damage.
Page 231: Cable Test
Table 9-1. Components Related to Specific Error Terms omponent Directivity Source Re ection Isolation Load Transmission Match Tracking Match Tracking alibration Kit open/short Test Set connectors bridge bias tee transfer switch step attenuator power sp itter Analyzer samp er A10 digita External cables If you detect problems using error term analysis, use the following approach to isolate the fault:...
Page 232: Verify Shorts And Opens
Figure LOSS9 here. Figure 9-1. Typical Return Loss Traces of Good and Poor Cables Verify Shorts and Opens Substitute a known good short and open of the same connector type and sex as the short and open in question. If the devices are not from one of the standard calibration kits, refer to the P 8753D Network Analyzer User's Guide for information on how to use the function.
Page 233: Test Set Troubleshooting
Figure 9-2. Typical Smith Chart Traces of Good Short (a) and Open (b) Test Set Troubleshooting Test set problems are of three varieties: RF problems, power problems and control problems. The HP 85044 /B can only experience RF problems as it is not powered or controlled by the analyzer. To troubleshoot: The HP 85044 /B: refer to its manual.
Page 234 2. Press SE VICE MENU PEEK/POKE ADD ESS RESET SYSTEM 1314412 3. \POKE" the address for the appropriate test set: HP 85047 : Press POKE RESET HP 85046 /B: Press POKE RESET 4. Measure the DC voltage at pin 14 (see Figure 9-4) of the analyzer rear panel test set interconnect connector.
Page 235 The analyzer controls the test set attenuator, the transfer switch (for forward and reverse measurements), and, in the case of the HP 85047 , bypasses the frequency doubler. The associated test set interconnect connector pins are shown in Figure 9-4; refer to it as needed.
Page 236 Sweep Delay. settling time. It also distinguishes, by encoding, the HP 85047 from the 85046 /B test sets. See the test set manual for more detail. For HP 85047 systems, rst see HP 85047 Note, above, to reset the analyzer.
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Page 238: Index
Firmware Revision oftkey ..... . . 10-39 HP-IB ervice Mnemonic Denitions ....
Page 239 Figures 10-1. Internal Diagnostics Menus ..... . 10-2 10-2. Jumper Positions on the A9 CPU ....10-7 10-3.
Page 240 The menus are divided into two groups: 1. Internal Diagnostics 2. ervice Features When applicable, the HP-IB mnemonic is written in parentheses following the key. ee HP-IB ervice Mnemonic Denitions at the end of this section. Error Messages The displayed messages that pertain to service functions are also listed in this chapter to help you: Understand the message.
Page 241 Throughout this service guide, these conventions are observed: are labeled front panel keys. ARDKEYS display dened keys (in the menus). SOF KEYS (HP-IB COMMAND ) When applicable, follow the keystroke in parentheses. Tests Menu To access this menu, press SYSTEM SERVICE MENU...
Page 242 Table 10-1 shows the test status abbreviation that appears on the display, its denition, and the equivalent HP-IB code. The HP-IB command to output the test status of the most recently executed test is OUTPTE . For more information, refer to \HP-IB ervice Mnemonic Denitions"...
Page 243 Toggles the record function on and o. When the function is (TO1) RECORD on OFF ON, certain test results are sent to a printer via HP-IB. This is especially useful for correction constants. The instrument must be in system controller mode or pass control mode to print. (Refer to the \Printing, Plotting, and aving Measurement Results"...
Page 244 Edit List Menu To access this menu, press SYSTEM SERVICE MENU ES OP IONS LOSS/SENSR LIS S and then press one of the following: CAL FAC OR SENSOR A CAL FAC OR SENSOR B POWER LOSS elects a segment (frequency point) to be edited, deleted from, or SEGMEN added to the current data table.
Page 245 If all pass, this test displays a PA status. Each test in the subset retains its own test status. This same subset is available over HP-IB as \T T?". It is not performed upon remote preset. Part of the ROM/RAM tests and cannot be run separately. Refer to the ROM.
Page 246 Figure JUMPLOC here. Figure 10-2. Jumper Positions on the A9 CPU Jumper positions 1 to 5 run right to left. For additional information, see \Internal Tests" (near the front of this section) and the \Digital Control Troubleshooting" chapter. Veries the ability of the main processor and the D P (digital signal DSP Wr/Rd.
Page 247 It tests the A16 rear panel, and A9 CPU data buering HP-IB and address decoding. (It does not test the HP-IB interface; for that see the Programming Guide .) This runs only when selected or with ALL INTERNAL.
Page 248 Use this test before running test 48, below. Measures source output power accuracy, atness, and linearity against Source Cor. an external power meter via HP-IB to generate new correction constants. Run tests 44, 45, 46, and 48 rst. Generates source pretune values for proper phase-locked loop Pretune Cor.
Page 249 Measures the absolute amplitude response of the R sampler against an Sampler Cor. external power meter via HP-IB, then compares A and B, (magnitude and phase), against R. It improves the R input accuracy and A/B/R tracking. Calculates the frequency of the cavity oscillator and the instrument Cav Osc Cor.
Page 250 Test Patterns Test patterns are used in the factory for display adjustments, diagnostics, and troubleshooting, but they are not used for eld service. Test patterns are executed by entering the test number (66 through 80), then pressing . The test pattern EXECU E ES CON INUE will be displayed and the softkey labels blanked.
Page 251 Displays a color rainbow pattern for showing the ability of the A19 Test Pat 3. G P board to display 15 colors plus white. The numbers written below each bar indicate the tint number used to produce that bar (0 & 100=pure red, 33=pure green, 67=pure blue).
Page 252 ervice Key Menus - ervice Features The service feature menus are shown in Figure 10-3 and described in the following paragraphs. The following keys access the service feature menus: SERVICE MODES ANALOG BUS on OFF PEEK/POKE FIRMWARE REVISION Figure ERVFEAT here. Figure 10-3.
Page 253 Accesses the functions that allow you to adjust the source: SRC ADJUS MENU Tests the pretune functions of the phase lock SRC UNE on OFF and source assemblies. Use the entry controls to set RF OUT to any frequency from 300 KHz to 3 GHz. When in this mode: 1.
Page 254 Service Modes More Menu To access this menu, press SYSTEM SERVICE MENU SERVICE MODES MORE Toggles the sampler correction ON, for normal operation, or OFF, SAMPLER COR ON off for diagnosis or adjustment purposes. ( M6) Normal operating condition and works in conjunction with IF IF GAIN AU O GAIN ON and OFF.
Page 255 The analog bus is a single multiplexed line that networks 31 nodes within the instrument. It can be controlled from the front panel, or through HP-IB, to make voltage and frequency measurements just like a voltmeter, oscilloscope, or frequency counter. The next few paragraphs provide general information about the structure and operation of the analog bus.
Page 256 SERVICE MODES To read the counter over HP-IB, use the command OUTPCNTR. Notes The display and marker units (U) correspond to volts. Nodes 17 (1st IF) and 24 (2nd LO) are unreliable above 1 MHz.
Page 257 (Note: Using the counter slows the sweep.) The counter bandwidth is 16 MHz unless otherwise noted for a specic node. OUTPCNTR is the HP-IB command to output the counter's frequency data. switches the counter to monitor the analog bus. ANALOG BUS...
Page 258 Analog Bus odes The following paragraphs describe the 31 analog bus nodes. The nodes are listed in numerical order and are grouped by assembly. Refer to the \Overall Block Diagram" for node locations. A3 Source To observe six of the eight A3 analog bus nodes (not node 5 or 8), perform tep A3 to set up a power sweep on the analog bus.
Page 259 Node Mn Pwr DAC (main power DAC) Perform step A3, above, to set up a power sweep on the analog bus. Then press MEAS ANALOG IN 1 SCALE REF AU O SCALE Node 1 detects the RF power from the cavity oscillator into the level modulator. Flat line segments indicate ALC saturation and should not occur between 15 dBm and +10 dBm.
Page 260 Node 2 Src V/GHz (source volt per GHz) Perform step A3, above, to set up a power sweep on the analog bus. Then press MEAS ANALOG IN 2 SCALE REF AU O SCALE Node 2 detects the RF power out of the level modulator. Flat line segments indicate ALC saturation and should not occur between 15 dBm and +10 dBm.
Page 261 Node 3 Amp Id (amplier input detector) Perform step A3, above, to set up a power sweep on the analog bus. Then press MEAS ANALOG IN 3 SCALE REF AU O SCALE Node 3 detects the power out of the mixer and into the amplier. Typically the trace is at at 0 V up to about 10 dBm, the response limit of the analog bus detector.
Page 262 Node 4 Det (detects RF OUT power level) Perform step A3, above, to set up a power sweep on the analog bus. Then press MEAS ANALOG IN 4 SCALE REF AU O SCALE Node 4 detects power that is coupled and detected from the RF OUT arm to the ALC loop. Note that the voltage exponentially follows the power level inversely.
Page 263 Node 5 Temp (temperature sensor) This node registers the temperature of the cavity oscillator which must be known for eective spur avoidance. The sensitivity is 10 mV per degree Kelvin. The oscillator changes frequency slightly as its temperature changes. This sensor indicates the temperature so that the frequency can be predicted.
Page 264 Node 7 Log (log amplier output detector) Perform step A3, above, to set up a power sweep on the analog bus. Then press MEAS ANALOG IN 7 SCALE REF AU O SCALE Node 7 displays the output of a logger circuit in the ALC loop. The trace should be a linear ramp.
Page 265 (see under the \Analog Bus Menu" heading). For HP-IB AUX OU on OFF considerations, see \HP-IB ervice Mnemonic Denitions," located later in this chapter. Node 2 A 0 Gnd (ground reference) This node is used in the \Analog Bus Correction Constants" adjustment as a reference for calibrating the analog bus low and high resolution circuitry.
Page 266 A11 Phase Lock To observe the A11 analog bus nodes perform step A11, below. Then follow the node-specic instructions. Step A . Press: PRESET MEAS ANALOG IN MARKER SYSTEM SERVICE MENU ANALOG BUS ON FORMAT MORE REAL Node 3 VCO Tune 2 (not used) Node 4 Vbb Ref (ECL reference voltage level) Perform step A11, above, and then press MEAS...
Page 267 Node 5 Pretune (open-loop source pretune voltage) Perform step A11, above, and then press MEAS ANALOG IN 15 SCALE REF AU OSCALE This node displays the source pretune signal and should look like a stair-stepped ramp. Each step corresponds to the start of a band. Disregard the error message CAU ION: POSSIBLE FALSE LOCK Figure NODE15 here.
Page 268 Node 6 V/GHz (source oscillator tuning voltage) Perform step A11, above, and then press MEAS ANALOG IN 16 SCALE REF AU OSCALE This node displays the tuning voltage ramp used to tune the source oscillator. You should see a voltage ramp like the one shown in Figure 10-11. If this waveform is correct, you can be condent that the A11 phase lock assembly, the A3 source assembly, the A13/A14 fractional-N assemblies, and the A7 pulse generator are working correctly and the instrument is phase locked.
Page 269 Node 7 st IF (IF used for phase lock) Perform step A11, above, and then press MEAS ANALOG IN 17 COUN ER: ANALOG BUS MENU CW FREQ Vary the frequency and compare the results to the table below. Entered Frequency Counter Reading 0.3 to 15.999 MHz same as entered 16 MHz to 3 GHz...
Page 270 Node 8 IF Det 2N (IF on A phase lock after 3 MHz lter) Perform step A11, above, and then press MEAS ANALOG IN 18 STOP SCALE REF AU OSCALE This node detects the IF within the low pass lter/limiter. The lter is used during the track and sweep sequences but never in band 1 (3.3 to 16 MHz).
Page 271 Node 2 00 kHz ( 00 kHz reference frequency) Perform step A12, above, and then press MEAS ANALOG IN 21 COUN ER: ANALOG BUS This node counts the A12 100 kHz reference signal that is used on A13 (the fractional-N analog assembly) as a reference frequency for the phase detector.
Page 272 Node 23 VCO Tune (A 2 VCO tuning voltage) Perform tep A12, above, and then press MEAS ANALOG IN 23 STOP MARKER FCTN SCALE REF AU O SCALE The trace should show a voltage step as shown in Figure 10-14. If not, refer to the High/Low Band Transition Adjustment.
Page 273 Node 24 2nd LO Perform step A12, above, and then press MEAS ANALOG IN 24 COUN ER: ANALOG BUS MENU CW FREQ This node counts the 2nd LO used by the sampler/mixer assemblies to produce the 2nd IF of 4 kHz. As you vary the frequency, the counter reading should change to values very close to those indicated below: Frequency Entered Counter Reading...
Page 274 Node 26 Ext Ref (rear panel external reference input) Perform step A12, above, and then press MEAS ANALOG IN 26 The voltage level of this node indicates whether an external reference timebase is being used: No external reference: about 0.9 V With external reference: about 0.6 V Node 27 VCXO Tune (40 MHz VCXO tuning voltage)
Page 275 Node 29 FN VCO Tun (A 4 FN VCO tuning voltage) Perform step A14, above, and then press MEAS ANALOG IN 29 SCALE REF AU OSCALE Observe the A14 FN VCO tuning voltage. If the A13 and A14 assemblies are functioning correctly and the VCO is phase locked, the trace should look like Figure 10-15.
Page 276 Node 30 FN VCO Det (A 4 VCO detector) Perform step A14, above, and then press MEAS ANALOG IN 30 RESOLU ION [HIGH] SCALE REF ee whether the FN VCO is oscillating. The trace should resemble Figure 10-16. Figure NODE30 here. Figure 10-16.
Page 277 Resets or clears the memory where instrument states are stored. RESE MEMORY To do this, press RESE MEMORY PRESET 10-38 Service Key Menus and Error Messages RAFT 3/21/106 15:14 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 278 Firmware Revision oftkey Press SYSTEM to display the current rmware revision SERVICE MENU FIRMWARE REVISION information. The number and implementation date appear in the active entry area of the display as shown in Figure 10-17 below. The installed options are also displayed. Another way to display the rmware revision information is to cycle the line power.
Page 279 HP-IB ervice Mnemonic Definitions All service routine keystrokes can be made through HP-IB in one of the following approaches: sending equivalent remote HP-IB commands. (Mnemonics have been documented previously with the corresponding keystroke.) invoking the ystem Menu (MENU Y T) and using the analyzer mnemonic ( OFTn), where \n"...
Page 280 N I[D] Measures and displays the analog input. The preset state input to the analog bus is the rear panel UX IN. The other 30 nodes may be selected with only if the BUS is enabled ( N Bon). OUTPCNTR Outputs the counter's frequency data. OUTPERRO Reads any prompt message sent to the error queue by a service routine.
Page 281 The information in the list includes explanations of the displayed messages and suggestion to help solve the problem. The error messages that pertain to measurement applications are included in HP 8753D Option 011 Network Analyzer User's Guide BA ERY FAILED. S A E MEMORY CLEARED Error Number The battery protection of the non-volatile CMOS memory has failed.
Page 282 The device at the selected address cannot be accessed by the analyzer. Verify that the device is switched on, and check the HP-IB connection between the analyzer and the device. Ensure that the device address recognized by the analyzer matches the HP-IB address set on the device itself.
Page 283 HP-IB connection between the analyzer and the disk drive. Ensure that the disk drive address recognized by the analyzer matches the HP-IB address set on the disk drive itself. DISK READ/WRI E ERROR Error Number There may be a problem with your disk.
Page 284 MORE SLIDES NEEDED Error Number When you use a sliding load (in a user-dened calibration kit), you must set at least three slide positions to complete the calibration. NO CALIBRA ION CURREN LY IN PROGRESS Error Number softkey is not valid unless a calibration RESUME CAL SEQUENCE is already in progress.
Page 285 PRESET NO ALLOWED DURING POWER ME ER CAL Error Number When the analyzer is performing a power meter calibration, the HP-IB bus is unavailable for other functions such as printing or plotting. OVERLOAD ON INPU A, POWER REDUCED Error Number See error number 57.
Page 286 Check to see if the power level you set is within specications. If it is, refer to Chapter 7, \Source Troubleshooting." You will only receive this message over the HP-IB. On the analyzer, is displayed. RAFT...
Page 287 POW ME INVALID Error Number The power meter indicates an out-of-range condition. Check the test setup. POW ME NO SE LED Error Number Sequential power meter readings are not consistent. Verify that the equipment is set up correctly. If so, preset the instrument and restart the operation.
Page 288 HP-IB address set on the printer itself. PROBE POWER SHU DOWN! Error Number The analyzer biasing supplies to the HP 85024 external probe are shut down due to excessive current. Troubleshoot the probe, and refer to Chapter 5, \Power Supply Troubleshooting."...
Page 289 SYS EM IS NO IN REMO E Error Number The analyzer is in local mode. In this mode, the analyzer will not respond to HP-IB commands with front panel key equivalents. It will, however, respond to commands that have no such equivalents, such as status requests.
Page 290 ontents . Error Terms rror Terms Can Also Serve a Diagnostic Purpose ... . 11-1 Full Two-Port rror-Correction Procedure ....11-2 rror Term Inspection .
Page 291 Tables 11-1. Calibration Coecient Terms and Tests ....11-5 11-2. Uncorrected System Performance of HP 8753D (50 ) with 7 mm Test Ports 11-7 Contents-2 RAFT 3/21/106 15:14 Artisan Scientific - Quality Instrumentation ...
Page 292: Error Terms
\Optimizing Measurement P 8753D Option 011 Network Analyzer User's Guide Results" chapter of the . Fore details on the theory of error-correction, refer to the \Application and Operation Concepts"...
Page 293: Full Two-Port Rror-Correction Procedure
Consider the following while troubleshooting: 1. All parts of the system, including cables and calibration devices, can contribute to systematic errors and impact the error terms. 2. Connectors must be clean, gaged, and within specication for error term analysis to be meaningful.
Page 294 Figure FULLCAL here. Figure 11-1. Standard Connections for Full Two-Port Error-Correction RAFT Error Terms 11-3 3/21/106 15:14 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 295 6. To measure the standard, when the displayed trace has settled, press: FORWARD: OPEN The analyzer underlines the softkey after it measures the standard. OPEN 7. Disconnect the open, and connect a short circuit to PORT 1. 8. To measure the device, when the displayed trace has settled, press: FORWARD: SHORT The analyzer underlines the softkey after it measures the standard.
Page 296 16. To measure the standard, when the trace has settled, press: TRANSMISSION DO BOTH FWD + REV 17. To compute the error coecients, press: DONE 2-PORT AL The analyzer displays the corrected measurement trace. The analyzer also shows the notation at the left of the screen, indicating that error-correction is on.
Page 297: Rror Term Inspection
Connect a printing or plotting peripheral to the analyzer. b. Press and select the appropriate SYSTEM ONTROLLER SET ADDRESSES LO AL peripheral to verify that the HP-IB address is set correctly on the analyzer. c. Press and then choose either PRINT MONO HROME PLOT SAVE/RE ALL d.
Page 298: Rror Term Descriptions
Table 11-2. Uncorrected System Performance of HP 8753 (50 ) with 7 mm Test Ports requency Range 30 kHz to 300 kHz 300 kHz to 1.3 GHz 1.3 GHz to 3 GHz 3 GHz to 6 GHz Directivity 20 dB...
Page 299: Description
Affected Measurements Low re ection device measurements are most aected by directivity errors. Figure DF DR here. Figure 11-2. Typical E F/E R without and with Cables Source Match (ESF and ESR) escription Source match is a measure of test port connector match, as well as the match between all components from the source to the test port.
Page 300 Figure SF SR here. Figure 11-3. Typical ESF/ESR without and with Cables Reflection Tracking (ERF and ERR) escription Re ection tracking is the dierence between the frequency response of the reference path (R path) and the frequency response of the re ection test path (A or B input path). Significant System Components open calibration kit device short calibration kit device...
Page 301 Figure RF RR here. Figure 11-4. Typical ERF/ERR Without and With Cables Isolation (Crosstalk, EXF and EXR) escription Isolation is a measure of the leakage between the test ports and the signal paths. The isolation error terms are characterized by measuring transmission (S21, S12) with loads attached to both ports during the error-correction procedure.
Page 302 Figure XF XR here. Figure 11-5. Typical EXF/EXR with 10 Hz Bandwidth and with 3 kHz Bandwidth Load Match (ELF and ELR) escription Load match is a measure of the impedance match of the test port that terminates the output of a 2-port device.
Page 303 Figure LF LR here. Figure 11-6. Typical ELF/ELR Transmission Tracking (ETF and ETR) escription Transmission tracking is the dierence between the frequency response of the reference path (including R input) and the transmission test path (including A or B input) while measuring transmission.
Page 304 Figure TF TR here. Figure 11-7. Typical ETF/ETR RAFT Error Terms 11-13 3/21/106 15:14 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
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Page 306 2. Theory of Operation ow the P 8753D Option 011 Works ....12-1 The Built-In Synthesized Source ....
Page 307 Frequency Oset ......12-15 armonic Analysis (Option 002) ....12-15 External Source Mode .
Page 308 Figures 12-1. Simplied Block Diagram of the Network Analyzer System ..12-2 12-2. Power Supply Functional Group, Simplied Block Diagram ..12-4 12-3. Digital Control Group, Simplied Block Diagram ... . 12-7 12-4.
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Page 310: Theory Of Operation
Theory of Operation This chapter is divided into two major sections: \ ow the P 8753D Option 011 Works" gives a general description of the P 8753D Network Analyzer's operation. \A Close Look at the Analyzer's Functional Groups" provides more detailed operating theory for each of the analyzer's functional groups.
Page 311 Sets Signal separation for the P 8753D Option 011 network analyzer can be accomplished using any one of the following accessories: P 85044A/B Transmission/Re ection Test Set...
Page 312: Test Set Step Attenuator
The P 85046A/B and P 85047A S-parameter test sets contain the hardware required to make simultaneous transmission and re ection measurements in both the forward and reverse directions. An RF path switch in the test set allows reverse measurements to be made without changing the connections to the device under test.
Page 313: Power Supply Theory
sampler is also related since it is part of the source phase lock loop. The source supplies a phase-locked RF signal to the device under test. The signal separation group divides the source signal into a reference Signal Separation. path and a test path, and provides connections to the device under test. To accomplish this, one of several external test sets must be connected to the analyzer.
Page 314: Line Power Module
Line Power Module The line power module includes the line power switch, voltage selector switch, and main fuse. The line power switch is activated from the front panel. The voltage selector switch, accessible at the rear panel, adapts the analyzer to local line voltages of approximately 115 V or 230 V (with 350 VA maximum).
Page 315: Shutdown Circuit
indicated. The troubleshooting procedures later in this chapter detail the steps to trace the cause of the problem. Shutdown Circuit The shutdown circuit is triggered by overcurrent, overvoltage, undervoltage, or overtemperature. It protects the instrument by causing the regulated voltage supplies to be shut down.
Page 316: A2 Front Panel Processor
as communications between the analyzer and an external controller and/or peripherals. Figure 12-3 is a simplied block diagram of the digital control functional group. Figure DIBLK12 here. Figure 12-3. igital Control Group, Simplified Block iagram A1 Front Panel The A1 front panel assembly provides user interface with the analyzer. It includes the keyboard for local user inputs, and the front panel LEDs that indicate instrument status.
Page 317: Main Ram
data in the main RAM. It controls the digital signal processor, the front panel processor, the display processor, and the interconnect port interfaces. In addition, when the analyzer is in the system controller mode, the main CPU controls peripheral devices through the peripheral port interfaces.
Page 318: A16 Rear Panel
A16 Rear Panel The A16 rear panel includes the following interfaces: This allows you to connect an P 8753D Option 011 TEST SET I/O INTERCONNECT. analyzer to an P 85046A/B or 85047A S-parameter test set using the interconnect cable supplied with the test set. The S-parameter test set is then fully controlled by the analyzer.
Page 319: A14/A13 Fractional-N
band is not phased locked nor does it use the ALC. It is the basic amplied output of the fractional-N synthesizer. The source functional group consists of the individual assemblies described below. A14/A13 Fractional-N These two assemblies comprise the synthesizer. The 30 to 60 M z VCO in the A14 assembly generates the stable LO frequencies for fundamental and harmonic mixing.
Page 320: Source Super Low Band Operation
Source Super Low Band Operation The Super Low Band Frequency Range is 10 k z to 300 k z. These frequencies are generated by the A12 Reference Board. They are the amplied output of the fractional-N synthesizer. This output is not phase locked and is not subject to ALC control. Refer to Table 12-1. Table 12-1.
Page 321 When lock is A synthesized sub sweep is generated. The source tracks the synthesizer. achieved at the start frequency, the synthesizer starts to sweep. This changes the phase lock reference frequency, and causes the source to track at a dierence frequency 40 M z below the synthesizer.
Page 322: Source Igh Band Operation
Source igh Band Operation The high band frequency range is 16 M z to 3.O G z or 16 M z to 6.0 G z with Option 006. These frequencies are generated in subsweeps by phase-locking the A3 source signal to harmonic multiples of the fractional-N VCO.
Page 323 The 1st The dierence frequency ( st IF) from the A4 sampler is compared to a reference. IF feedback signal from the A4 is ltered and applied to a phase comparator circuit in the A11 phase lock assembly. The other input to the phase comparator is a crystal controlled 1 M z signal from the A12 reference assembly.
Page 324 950 to 6000 Source Operation in other Modes/Features Besides the normal network analyzer mode, the P 8753D Option 011 has extra modes and features to make additional types of measurements. The following describes the key dierences in how the analyzer operates to achieve these new measurements.
Page 325 Since the chosen VCO harmonic and the source dier by 0.500 or 0.333 M z, then another VCO harmonic, 2 or 3 times higher in frequency, will be exactly 1.000 M z away from the 2nd or 3rd harmonic of the source frequency. The samplers, then, will also down-convert these harmonics to yield the desired components in the 1st IF at 1.000 M z.
Page 326 Figure EXBLK12 here. Figure 12-7. External Source Mode uned Receiver Mode In tuned receiver mode, the analyzer is a synthesized, swept, narrow-band receiver only. The external signal source must be synthesized and reference-locked to the analyzer. To achieve this, the analyzer's source and phase lock circuits are completely unused. See Figure 12-8.
Page 327 8753C source frequency. A portion of the RF signal is coupled to the analyzer R input for reference. (For an P 8753D Option 011 combined with Option 006, the frequency doubler is bypassed since the analyzer's source is capable of generating a swept RF signal up to 6 G z.) The remaining signal is routed through a 70 dB programmable step attenuator to...
Page 328 Figure TSBLK12 here. Figure 12-9. Simplified Block iagrams of the Test Sets Receiver Theory The receiver functional group consists of the following assemblies: A4 sampler/mixer A5 sampler/mixer A6 sampler/mixer A10 digital IF These assemblies combine with the A9 CPU (described in Digital Control Theory) to measure and process input signals into digital information for display on the analyzer.
Page 329 Figure RFGBLK12 here. Figure 12-10. Receiver Functional Group, Simplified Block iagram A4/A5/A6 Sampler/Mixer The A4, A5, and A6 sampler/mixers all down-convert the RF input signals to xed 4 k z 2nd IF signals with amplitude and phase corresponding to the RF input. The Sampler Circuit in High Band In high band operation, the sampling rate of the samplers is controlled by the 1st LO from the A7 pulse generator assembly.
Page 330 0.996 MHz .0 kHz * This band is present on the HP 8753D Option 011 nly when it is combined with the Option 006. A10 Digital IF The three 4 k z 2nd IF signals from the sampler/mixer assemblies are input to the A10 digital IF assembly.
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Page 332 ontents 4. Assembly Replacement and Post-Repair Procedures eplacing an assembly ......14-2 Procedures described in this chapter ....14-3 Line Fuse .
Page 333 ......14-50 Post- epair Procedures for HP 8753D Option 011 ... . . 14-52...
Page 334 Tables 14-1. elated Service Procedures ..... . 14-52 RAFT Contents-3 3/21/106 15:15 Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
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Page 336: Assembly Replacement And Post-Repair Procedures
Post-Repair Procedures This chapter contains procedures for removing and replacing the major assemblies of the HP 8753D Option 011 Network Analyzer. A table showing the corresponding post-repair procedures for each replaced assembly is located at the end of this chapter.
Page 337: Eplacing An Assembly
The following steps show the sequence to replace an assembly in an HP 8753D Option 011 Network Analyzer. 1. Identify the faulty group. efer to Chapter 4, \Start Troubleshooting Here." Follow up with the appropriate troubleshooting chapter that identies the faulty assembly.
Page 338: Procedures Described In This Chapter
Procedures described in this chapter The following pages describe assembly replacement procedures for the HP 8753D Option 011 assemblies listed below: Line Fuse Covers Front Panel Assembly ear Panel Assembly Type-N Connector Assembly Keyboard Front Panel Interface Source Assembly Samplers and...
Page 339: Line Fuse
1. Disconnect the power cord. 2. Use a small slot screwdriver to pry open the fuse holder. 3. eplace the blown fuse with a 3 A 250 V F fuse (HP part number 2110-0708). Replacement Simply replace the fuse holder.
Page 340 Line Fuse Insert artwork here. RAFT Assembly Replacement and 14-5 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 341: Covers
Covers Tools Required T-10 TO X screwdriver T-15 TO X screwdriver T-20 TO X screwdriver Removing the top cover 1. emove both upper rear feet (item 1) by loosening the attaching screws (item 2). 2. Loosen the top cover screw (item 3). 3.
Page 342 Covers Insert artwork here. RAFT Assembly Replacement and 14-7 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 343: Front Panel Assembly
Front Panel Assembly Tools Required T-10 TO X screwdriver T-15 TO X screwdriver small slot screwdriver ESD (electrostatic discharge) grounding wrist strap 5/16-inch open-end torque wrench (set to 10 in-lb) Removal 1. Disconnect the power cord. 2. emove the bezel's softkey cover (item 1) by sliding your ngernail under the left edge, near the top or bottom of the cover.
Page 344 Front Panel Assembly Insert artwork here. RAFT Assembly Replacement and 14-9 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 345: Eplacement
Front Panel Assembly 7. emove both front feet (item 8). 8. emove the four screws (item 9) from the bottom edge of the frame. 9. Slide the front panel over the four Type-N connectors (item 10). 10. Disconnect the ribbon cable (W17) from the front panel by pressing down and out on the connector locks.
Page 346 Front Panel Assembly Insert artwork here. RAFT Assembly Replacement and 14-11 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 347: Ear Panel Assembly
ear Panel Assembly Tools Required T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top and bottom covers (refer to \Covers" in this chapter). 2. emove six screws (item 1) from the rear frame: two from the top edge and four from the bottom edge.
Page 348 Rear Panel Assembly Insert artwork here. RAFT Assembly Replacement and 14-13 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 349: Eplacement
Rear Panel Assembly 7. Pull the rear panel away from the frame. Disconnect the ribbon cable (W27) from the motherboard connector (A17J6), pressing down and out on the connector locks. The rear panel is now connected only by three exible cables (W21, W22, and W23). 8.
Page 350 Rear Panel Assembly Insert artwork here. RAFT Assembly Replacement and 14-15 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 351: Type-N Connector Assembly
Type-N Connector Assembly Tools Required T-10 TO X screwdriver T-15 TO X screwdriver small slot screwdriver ESD (electrostatic discharge) grounding wrist strap 5/16-inch open-end torque wrench (set to 10 in-lb) Removal 1. Disconnect the power cord and remove the top cover (refer to \Covers" in this chapter). 2.
Page 352 Type-N Connector Assembly Insert artwork here. RAFT Assembly Replacement and 14-17 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 353: Eplacement
Type-N Connector Assembly 7. emove the three screws (item 6) from the bottom edge of the front frame that secure the connector bracket. emove the connector assembly (item 7). Replacement everse the order of the removal procedure. Note When reconnecting semi-rigid cables, it is recommended that the connections be torqued to 10 in-lb.
Page 354 Type-N Connector Assembly Insert artwork here. RAFT Assembly Replacement and 14-19 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 355: A1 Keyboard
A1 Keyboard Tools Required T-10 TO X screwdriver T-15 TO X screwdriver small slot screwdriver ESD (electrostatic discharge) grounding wrist strap 5/16-inch open-end torque wrench (set to 10 in-lb) Removal 1. emove the front panel interface board (refer to \A2 Front Panel Interface" in this chapter).
Page 356 A1 Keyboard Insert artwork here. RAFT Assembly Replacement and 14-21 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 357: A2 Front Panel Interface
A2 Front Panel Interface Tools Required T-10 TO X screwdriver T-15 TO X screwdriver small slot screwdriver ESD (electrostatic discharge) grounding wrist strap 5/16-inch open-end torque wrench (set to 10 in-lb) Removal 1. emove the front panel (refer to \Front Panel Assembly" in this chapter). 2.
Page 358 A2 Front Panel Interface Insert artwork here. RAFT Assembly Replacement and 14-23 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 359: A3 Source Assembly
A3 Source Assembly Tools Required T-15 TO X screwdriver 5/16-inch open-end torque wrench (set to 10 in-lb) ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top cover (refer to \Covers" in this chapter). 2.
Page 360 A3 Source Assembly Insert artwork here. RAFT Assembly Replacement and 14-25 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 361: A4, A5, A6 Samplers And A7 Pulse Generator
A4, A5, A6 Samplers and A7 Pulse Generator Tools Required T-10 TO X screwdriver 5/16-inch open-end torque wrench (set to 10 in-lb) ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top cover (refer to \Covers" in this chapter). 2.
Page 362 A4, A5, A6 Samplers and A7 Pulse Generator Insert artwork here. RAFT Assembly Replacement and 14-27 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 363: A8, A10, A11, A12, A13, A14 Card Cage Boards
A8, A10, A11, A12, A13, A14 Card Cage Boards Tools Required T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top cover (refer to \Covers" in this chapter). 2.
Page 364 A8, A10, A11, A12, A13, A14 Card Cage Boards Insert artwork here. RAFT Assembly Replacement and 14-29 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 365 A9 CPU Board Tools Required T-10 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord. 2. emove the four screws (item 1) on the rear panel. 3. emove the bottom cover (refer to \Covers" in this chapter). 4.
Page 366 A9 CPU Board Insert artwork here. RAFT Assembly Replacement and 14-31 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 367 A9BT1 Battery Tools Required T-10 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap soldering iron with associated soldering tools Removal 1. emove the A9 CPU board (refer to \A9 CPU Board" in this chapter). 2. Unsolder and remove A9BT1 from the A9 CPU board. arning Battery A9BT1 contains lithium.
Page 368 A9BT1 Battery Insert artwork here. RAFT Assembly Replacement and 14-33 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 369 A15 Preregulator Tools Required T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. emove the rear panel (refer to \ ear Panel Assembly" in this chapter). 2. Disconnect the wire bundle (A15W1) from A8J2 and A17J3. 3.
Page 370 A15 Preregulator Insert artwork here. RAFT Assembly Replacement and 14-35 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 371 A16 ear Panel Interface Tools Required T-10 TO X screwdriver T-15 TO X screwdriver 3/16-inch hex-nut driver 9/16-inch hex-nut driver ESD (electrostatic discharge) grounding wrist strap Removal 1. emove the rear panel (refer to \ ear Panel Assembly" in this chapter). 2.
Page 372 A16 Rear Panel Interface Insert artwork here. RAFT Assembly Replacement and 14-37 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 373 A17 Motherboard Assembly Tools Required T-10 TO X screwdriver T-15 TO X screwdriver T-20 TO X screwdriver small slot screwdriver 2.5 mm hex-key driver 5/16-inch open-end torque wrench (set to 10 in-lb) ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top, bottom, and side covers (refer to \Covers" in this chapter).
Page 374 A17 Motherboard Assembly Insert artwork here. RAFT Assembly Replacement and 14-39 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 375 A17 Motherboard Assembly 11. emove the display (refer to \A18 Display" in this chapter). 12. emove the source assembly (refer to \A3 Source Assembly" in this chapter). 13. emove the samplers and pulse generator (refer to \A4, A5, A6 Samplers and A7 Pulse Generator"...
Page 376 A17 Motherboard Assembly Insert artwork here. RAFT Assembly Replacement and 14-41 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 377 A18 Display Tools Required T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord. 2. emove the bezel's softkey cover (item 1) by sliding your ngernail under the left edge, near the top or bottom of the cover.
Page 378 A18 isplay Insert artwork here. RAFT Assembly Replacement and 14-43 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 379 A19 Graphics Processor Tools Required T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the top cover (refer to \Covers" in this chapter). 2. emove the clip (item 1) that secures the graphics processor board (A19), removing the two screws that attach it to the rear frame.
Page 380 A19 Graphics Processor Insert artwork here. RAFT Assembly Replacement and 14-45 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 381 A20 Disk Drive Tools Required T-8 TO X screwdriver T-10 TO X screwdriver T-15 TO X screwdriver small slot screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. Disconnect the power cord and remove the bottom cover (refer to \Covers" in this chapter).
Page 382 A20 isk rive Insert artwork here. RAFT Assembly Replacement and 14-47 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 383 A26 High Stability Frequency eference (Option 1D5) Tools Required T-10 TO X screwdriver T-15 TO X screwdriver 9/16-inch hex-nut driver ESD (electrostatic discharge) grounding wrist strap Removal 1. emove the rear panel (refer to \ ear Panel Assembly" in this chapter). 2.
Page 384 A26 High Stability Frequency Reference (Option 1 5) Insert artwork here. RAFT Assembly Replacement and 14-49 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 385 B1 Fan Tools Required 2.5 mm hex-key driver T-10 TO X screwdriver T-15 TO X screwdriver ESD (electrostatic discharge) grounding wrist strap Removal 1. emove the rear panel (refer to \ ear Panel Assembly" in this chapter). 2. Disconnect the fan harness (B1W1) from the motherboard (A17J5). 3.
Page 386 B1 Fan Insert artwork here. RAFT Assembly Replacement and 14-51 3/21/106 15:15 Post-Repair Procedures Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com...
Page 387 Post- epair Procedures for HP 8753D Option 011 Table 14-1 lists the additional service procedures which you must perform to ensure that the instrument is working correctly, following the replacement of an assembly. Perform the procedures in the order that they are listed in the table.
Page 388 Table 14-1 Related Service Procedures (2 of 3) eplaced Adjustments Verication Assembly Correction Constants (CC) 9 CPU 9CC Jumper Positions Output Power Serial Number CC (Test 55) bsolute mplitude ccuracy Option Number CC (Test 56) Frequency Response Display Intensity and Focus CC (Test 49) Dynamic ccuracy Source Def CC (Test 44) Pretune Default CC (Test 45)
Page 389 Table 14-1 Related Service Procedures (3 of 3) eplaced Adjustments Verication On-Site Verication Assembly Correction Constants (CC) 11 Phase Lock 9CC Jumper Positions Minimum R Level nalog Bus CC (Test 46) Frequency ccuracy Source Pretune CC (Test 48) EEPROM Backup Disk On-Site Verication 12 Reference 9CC Jumper Positions...
Page 390 ontents 5. Safety and Licensing otice ....... . 15-1 Certication ......15-1 Warranty .
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Page 392: Safety And Licensing
Safety and Licensing otice The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including but not limited to, the implied warranties of merchantability and tness for a particular purpose.
Page 393 O OTHER WARRA TY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRA TIES OF MERCHA TABILITY A D FIT ESS FOR A PARTICULAR PURPOSE. Exclusive Remedies THE REMEDIES PROVIDED HEREI ARE BUYER'S SOLE A D EXCLUSIVE REMEDIES. HEWLETT-PACKARD SHALL OT BE LIABLE FOR A Y DIRECT, I DIRECT, SPECIAL, I CIDE TAL, OR CO SEQUE TIAL DAMAGES, WHETHER BASED O CO TRACT, TORT, OR A Y OTHER LEGAL THEORY.
Page 394 Hewlett-Packard Sales and Service Offices S FIELD OPERATIONS Headquarters California, Northern California, Southern ewlett-Packard Co. ewlett-Packard Co. ewlett-Packard Co. 19320 Pruneridge Avenue 301 E. Evelyn 1421 South Manhattan Ave. Cupertino, CA 95014 Mountain View, CA 94041 Fullerton, CA 92631 (800) 752-0900 (415) 694-2000 (714) 999-6700 Colorado...
Page 395: Shipment For Service
If you are sending the instrument to Hewlett-Packard for service, ship the analyzer to the nearest HP service center for repair, including a description of any failed test and any error message. Ship the analyzer, using the original or comparable anti-static packaging materials.
Page 396: Safety Symbols
Safety Symbols The following safety symbols are used throughout this manual. Familiarize yourself with each of the symbols and its meaning before operating this instrument. Caution denotes a hazard. It calls attention to a procedure that, if not Caution correctly performed or adhered to, would result in damage to or destruction of the instrument.
Page 397: General Safety Considerations
General Safety Considerations Safety Earth Ground Warning This is a Safety Class I product (provided with a protective earthing ground incorporated in the power cord). The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor, inside or outside the instrument, is likely to make the instrument dangerous.

HP 8753D Option 011 Service Manual

Section 1

Section 2

Section 3

Section 4

Section 5

Section 6

Section 7

Section 8

Section 9

Quick Links

Chapters

Troubleshooting

Related Manuals for HP 8753D Option 011

Summary of Contents for HP 8753D Option 011

Table of Contents