HP (Hewlett-Packard)メーカー8559Aの使用説明書/サービス説明書
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OPERATION AND SERVICE ANUAL SPECTRUM ANALYZER.
Hewlett - Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett - Packard further certij?es that its calibration measurements are traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau's calibration facility.
HEWLETT PACKARD OPERATION AND SERVICE MANUAL 8559A SPECTRUM ANALYZER 0.1 - 21 GHz SERIAL NUMBERS This manual applies directly to instruments with serial numbers prefixed 2347A. With modifications described in Section VII, this manual also applies to instruments with serial num - ber prefixes 1909A through 2320A.
CONTENTS Se ctio n P age .............. I GE NERA L INFORMATION 1-1. 1-3. 1 -6. 1-9. 1-11. 1-13. 1-14. 1-16. 1-19. 1 -2 2. 1-1 1-1 1-1 1-1 1-1 1-2 1-2 1-2 1-2 1-2 1-2 1 -2 6. Not Supp lied 1-10 .............. 1-27. Display Mainframe 1-30. Extende r Cable Assembly .
CONTENTS S e c t i o n Pag e 5-29. Ca l O u t p u t a nd Ref Le vel Cal .................. A d j u s t m e n t s 5 - 6 6 ...... 5-30. F r e q u e n c y Display A d j u s t m e n t s 5 - 6 9 V I REPLACEABLE PAR TS ................ 6 - 1 ...............
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MODEL 8559A GENERAL INFORMATION SAFETY SYMBOLS The following safety symbols are used throughout this manual and in the instrument. Familiarize yourself with each of the symbols and its meaning before operating this instrument. Instruction manual symbol.
GENERAL INFORMATION MODEL 8559A ADAPTER SIDE STOP KIT 1250 - 0780 08558 - 601 31 SPECTRUM ANALYZER OVERLAY KIT 5060-03 1 9 FIGURE 1-1. HP MODEL8559A SPECTRUM ANALYZER AND ACCESSORIES SUPPLIED 1-0.
MODEL 8559A GENERAL INFORMATION SECTION I GENERAL INFORMATION 1-1. INTRODUCTION 1 - 2. This Operation and Service manual contains information required to install, operate, test, adjust, and service the Hewlett - Packard 8559A Spectrum Analyzer. Figure 1 - 1 shows the instrument and acces - sories supplied.
GENERAL INFORMATION MODEL 8559A 1-1 1. SAFETY CONSIDERATIONS 1 - 12. Before operating this instrument, you should familiarize yourself with the safety markings on the instrument and safety instructions in this manual. This instrument has been manufactured and tested according to international safety standards.
MODEL 8559A GENERAL INFORMATION TABLE 1-1. HP MODEL8569A SPECIFICATIONS (1 OF 4) SPECIFICATIONS FREQUENCY SPECIFICATIONS FREQUENCY RANGE 10 MHz to 21 GHz, covered in six pushbutton- selectable ranges: Frequency Mixing Band Mode G Hz (n) Lowest Freq (GHz) [ALT IF] 0.
GENERAL INFORMATION MODEL 8559A TABLE 1-1. HP MODEL 8559A SPECIFICATIONS (2 OF 4) Maximum lnput (without damage) Levels Total Power: +20 dBm (O.lW, 2.2 Vrms) with 0 dB input attenuation +30 dBm (lW, 7.1 Vrms) with 2 10 dB input attenuation DC: +-7.1V AC (<I00 Hz): 7.
MODEL 8559A GENERAL INFORMATION TABLE 1 - 1. HP MODEL 8559A SPECIFICATIONS (3 OF 4) Display Fidelity CRT linearity and log or linear fidelity affect amplitude accuracy at levels other than Refer - ence Level. Log Incremental Accuracy: + 0.1 dB per dB from Reference Level Log Maximum Cumulative Error: I + 1.
GENERAL INFORMATION TABLE 1.1. HP MODEL8559A SPECIFICATIONS (4 OF 4) MODEL 6559A DIMENSIONS HP Model 8559A Spectrum Analyzer: HP Model 182T Display: HP Model 853A Display: Note: Dimensions in millimeters and (~nches). HP Model 853A Option 001 Display: TOP Note: Dimensions in mtllorneters and (inches).
MODEL 8559A GENERAL INFORMATION TABLE 1-2. MODEL 8559N180-SERIES SUPPLEMENTAL CHARACTERISTICS (1 OF 3) SUPPLEMENTAL CHARACTERISTICS NOTE: Values in this table are not specifications. They are typical characteristics included for user information. FREQUENCY CHARACTERISTICS FREQUENCY ACCURACY Frequency Cal Adjusts digital FREQUENCY GHz readout.
GENERAL INFORMATION MODEL 8559A TABLE 1-2. MODEL8559A / 180-SERIES SUPPLEMENTAL CHARACTERISTICS (2 OF 3) SUPPLEMENTAL CHARACTERISTICS NOTE: Values in this table are not specifications.
MODEL 8559A GENERAL INFORMATION TABLE 1-2. MODEL 8559N180SERIES SUPPLEMENTAL CHARACTERISTICS (3OF 3) SUPPLEMENTAL CHARACTERISTICS NOTE: Values in this table are not specifications. They are typical characteristics included for user information. AUX C 21.
GENERAL INFORMATION MODEL 8559A 1 - 26. EQUIPMENT REQUIRED BUT NOT SUP - PLIED 1 - 27. Display Mainframe 1 - 28. An HP 853A digital Spectrum Analyzer Dis - play is recommended for use with the HP 8559A. The rear panel of the HP 853A mainframe provides the following output connections: HORIZ (SWEEP), VERTICAL (VIDEO), BLANK (PENLIFT), 21.
MODEL 8559A GENERAL INFORMATION 1 - 41. SERVICE ACCESSORIES 1 - 44. Table 1 - 4 lists all of the equipment required for testing, adjusting and troubleshooting the 1 - 42. Service accessories are shown in Figure 1 - 6. Hewlett - Packard Model 8559A Spectrum Analyzer.
GENERAL INFORMATION MODEL 8559A FIGURE 16. SERVICE ACCESSORIES (1 OF 2).
MODEL 8559A Item 1 2 3 4 5 6 7 8 9 10 11 12 13 Description Board Puller, 2 prongs to lift PC boards Extender Board, 6 pin, 12 contacts Extender Board, 10 pin, 20 contacts Extender Board, 12 pin, 24 co.
GENERAL INFORMATION TABLE 1-4. RECOMMENDEDTEST EQUIPMENT(1 OF 4) MODEL 8559A Instrument Display Mainframe Sweep Oscillator RF Plug - In Comb Generator Spectrum Analyzer Synchronizer Critical Specifications HP 180 Series with Variable Persistence Mainframe for RF Plug - Ins below.
MODEL 8559A TABLE 1-4. RECOMMENDEDTEST EQUIPMENT(2 OF4) GENERAL INFORMATION Critical Specifications Frequency: 500 Hz Display Amplitude : - 1 5 Vdc Single - Channel Frequency Range : 20 MHz to 23 GHz Sensitivity: - 1 5 dBm Resolution: 0.
GENERAL INFORMATION TABLE 14. RECOMMENDED TEST EQUIPMENTQ OF 4) MODEL 8559A Instrument Fixed Attenuator (2 required) Fixed Attenuator Crystal Detector Termination Tuning Voltage Circuit Crystal Bypass.
MODEL 8559A TABLE 1-4. RECOMMENDEDTEST EQUIPMENT (4 OF 4) GENERAL INFORMATION Instrument Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Adapter Tuning .
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MODEL 8559A INSTALLATION AND OPERATION VERIFICATION SECTION II INSTALLATION AND OPERATION VERIFICATION 2-1. INTRODUCTION 2 - 2. This section includes information on initial inspection, preparation for use, and storage and shipping requirements for the HP 8559A.
INSTALLATION AND OPERATION VERIFICATION 2-12. To install side stops: Before removing covers from display mainframe, disconnect line power by removing ac power cord. Remove side covers from bottom section of mainframe. (Remove only right side cover if mainframe is a rack-mounted model.
MODEL 8559A INSTALLATION AND OPERATION VERIFICATION 2-1 4. Graticule Overlays 2-1 7. Operating Environment 2- 15. To install a graticule overlay: 1 Select proper overlay.
INSTALLATION AND OPERATION VERIFICATION MODEL 8559A 2 - 21. STORAGE AND SHIPMENT 2 - 22. Environment 2-23. The instrument may be stored or shipped in environments within the following limits: Temperat.
MODEL 8559A INSTALLATION AND OPERATION VERIFICATION D HP Part No. Description CARTON - OUTER FOAM PADS - INNER MANUAL PAD - FRONT CARTON - INNER BAG - ANTISTATIC FIGURE 2-2.
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MODEL 8559A OPERATION SECTION Ill OPERATION 3-1. INTRODUCTION 3 - 2. This section provides operating information for the HP 8559A Spectrum Analyzer plug - in. It also provides a brief description of display mainframe controls. For a detailed description of the display mainframe, refer to its manual.
OPERATION MODEL 8559A 3 - 17. The frequency group enables the operator to control how the Spectrum Analyzer displays the fre- quency domain. The RESOLUTION BW and FREQ SPAN/DIV controls, when pushed in, are coupled together, and moving either control moves the other.
MODEL 8559A OPERATION spectrum analyzer is calibrated for absolute ampli- tude and frequency measurements. Set the controls as shown in Table 1 before you start the adjustment procedure.
OPERATION 3 - 31. Frequency and Amplitude Adjustments Adjust VERTICAL POSN to align the CRT trace with the bottom graticule line. Center the LO feedthrough (i.e., the " signal " at 0 MHz) on the CRT with the TUNING control. Narrow the FREQ SPAN/DIV to 200 kHz.
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MODEL 8559A PERFORMANCE TESTS SECTION IV PERFORMANCE TESTS 4-1. INTRODUCTION 4-2. The procedures in this section test the electrical performance of the instrument using the specifica- tions in Section I as the performance standards. The performance tests included in this section are listed in Table 4-1.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS NOTE Perform the Front Panel Adjustment Procedure in Section Ill before proceeding with performance tests. Allow at least 30 minutes warmup time. 4-1 1. FREQUENCY SPAN ACCURACY SPECIFICATION: There are 14 calibrated spans ranging from 10 kHz per division to 200 MHz per division in a 1, 2, 5 sequence.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 11. FREQUENCY SPAN ACCURACY (Cont'd) PROCEDURE: 1. Set equipment controls as follows: Spectrum Analyzer: FREQUENCYBANDGHz .................................................. .01-3 TUNING ........
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4-1 1. FREQUENCY SPAN ACCURACY (Cont'd) Adjust spectrum analyzer TUNING control to position one spectral line (from comb generator) at first graticule line (left - hand edge of display). Measure the error between 17th spectral line and 9th graticule line as shown in Figure 4 - 2.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4-1 1. FREQUENCY SPAN ACCURACY (Cont'd) f 0.4 DIVISION -d I4 FIRST GRATICULE LINE COMB SIGNALS FIRST SPECTRAL LlNE NINTH GRATICULE LlNE NINTH SPECTRAL LlNE CENTERFREQUENCY FlGURE4-3. FREQUENCY SPAN ACCURACY MEASUREMENT FOR NINTH SPECTRAL LINE Set FREQ SPAN/DIV to 5 MHz.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4-1 1. FREQUENCY SPAN ACCURACY (Cont'd) 13. Set function generator frequency to 200 kHz (k 0.5%) using frequency counter. Connect function genera - tor output to comb generator MODULATION input. Set function generator OUTPUT LEVEL for a clean 200 - kHz comb on the spectrum analyzer display.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4.1 2. TUNING ACCURACY SPECIFICATION: 0.1 - 3.0 GHz: -t (1 MHz + 0.3% of center frequency) 3.0 - 21.0 GHz: -t (5 MHz + 0.2% of center frequency) DESCRIPTION: An external RF source is used to provide a frequency - calibrated input signal to the spectrum analyzer for three points on each frequency band.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 12. TUNING ACCURACY (Cont'd) PROCEDURE: Set spectrum analyzer controls as follows: FREQUENCYBANDGHz .................................................. .01-3 TUNING ..............................
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 12. TUNING ACCURACY (Cont'd) NOTE The 10 dB attenuator should be connected directly to the INPUT 50Q of the spectrum analyzer and the 11667A power splitter (no cable assembly should be used between attenuator and analyzer or power splitter).
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 13. RESIDUAL FM SPECIFICATION: Less than 2 kHz peak - to - peak for a time interval 10.1 second; less than 2 kHz peak - to - peak in a 180 - series display mainframe with 220/240 line voltage.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 13. RESIDUAL FM (Cont'd) Comb Generator: ............................................... COMB FREQUENCY - MHz 100 MC ...................................... INTERPOLATION AMPLITUDE - 1 MHz OFF ..
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 14. NOISE SIDEBANDS SPECIFICATION: Noise sidebands are at least 70 dB below a CW signal, 30 kHz or more away from the signal with a 1 kHz resolution bandwidth and full video filtering. DESCRIPTION: A stable 1.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 14. NOISE SIDEBANDS (Cont'd) Comb Generator: ............................................... COMB FREQUENCY - MHz 100 MC ...................................... INTERPOLATION AMPLITUDE - 1 MHz OFF .
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 15. RESOLUTION BANDWIDTH ACCURACY SPECIFICATION: Individual resolution bandwidth 3 - dB points are calibrated to + 15% (+ 30% for 3 MHz bandwidth). DESCRIPTION: Resolution bandwidth accuracy is measured in the linear mode to eliminate log amplifier errors.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4-1 5. RESOLUTION BANDWIDTH ACCURACY (Cont'd) PROCEDURE: Part of this test must be performed with power supplied to the instrument and with protective covers removed. The test should be performed only by sewice - trained personnel who are aware of the hazards involved.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4-1 5. RESOLUTION BANDWIDTH ACCURACY (Cont'd) 5. Tune signal generator frequency until trace drops to 5 divisions above graticule baseline. Record signal generator frequency. MHz 6. Tune signal generator frequency in direction opposite to that of step 5 until trace peaks (7.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 15. RESOLUTION BANDWIDTH ACCURACY (Cont'd) Dl SPLAY SIGNAL GENERATOR . RF OUTPUT FIGURE 4 - 10. RESOLUTION BANDWIDTH ACCURACY TEST SETUP, 30 kHz TO 1 kHz In the following procedure, the plug - in must be removed from the display mainframe and connected through the extender cable assembly.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4-1 5. RESOLUTION BANDWIDTH ACCURACY (Cont'd) Signal Generator: .............................................. COUNTERMODE INT,EXPANDXlO AM ..........................................................
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4-1 5. RESOLUTION BAN DWlDTH ACCURACY (Cont'd) 19. Set RESOLUTION BW to 3 kHz, leaving FREQ SPAN/DIV set to 0. Repeat steps 14 through 17. Min. Actual Max. 2.5 kHz 3.45 kHz 20. Set RESOLUTION BW to 1 kHz, leaving FREQ SPAN/DIV set to 0.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 16. RESOLUTION BANDWIDTH SELECTIVITY SPECIFICATION: 60-dB/3-dB resolution bandwidth ratio: < 15: 1 DESCRIPTION: The 60 - dB bandwidth is measured for all resolution bandwidths.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 16. RESOLUTION BANDWIDTH SELECTIVITY (Cont'd) PROCEDURE: 1. Set equipment controls as follows: Spectrum Analyzer: FREQUENCYBANDGHz .................................................. .01-3 TUNING .
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 16. RESOLUTION BANDWIDTH SELECTIVITY (Cont'd) 5. Tune signal generator in direction opposite to that of step 4 until trace peaks (top graticule line) and then drops to 2 divisions above graticule baseline.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4-1 6. RESOLUTION BANDWIDTH SELECTIVITY (Cont'd) Signal Generator: COUNTERMODE .............................................. INT,EXPANDXlO AM .......................................................
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4-1 6. RESOLUTION BANDWIDTH SELECTIVITY (Cont'd) Set RESOLUTION BW to 300 kHz, leaving FREQ SPAN/DIV set to 0. Repeat steps 14 through 18. kHz Set RESOLUTION BW to 1 MHz, leaving FREQ SPAWDIV set to 0.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 17. AVERAGE NOISE LEVEL SPECIFICATION: The maximum average noise level for each frequency band, with 1 kHz resolution bandwidth and 0 dB attenua - tion, is given in Table 4 - 5.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 17. AVERAGE NOISE LEVEL (Cont'd) PROCEDURE: 1. Set spectrum analyzer controls as follows: FREQUENCYBANDGHz .................................................. .01-3 TUNING .......................
MODEL 8559A PERFORMANCETESTS PERFORMANCE TESTS 4 - 17. AVERAGE NOISE LEVEL (Cont'd) NOTE Do not tune above 18.0 GHz for this step. 11. Repeat steps 2 through 5 for the frequency range of 18.0 - 21.0 GHz. 12. Repeat entire procedure with ALT IF on.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 18. RESIDUAL RESPONSES SPECIFICATION: Residual responses are less than - 90 dBm (0.01 - 3.06 GHz) with 0 dB input attenuation and no signal present at input. They are less than - 90 dBm (0.025 - 3.06 GHz) with ALT IF selected.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 18. RESIDUAL RESPONSES (Cont'd) Terminate INPUT 5(M2 connector with 50 - ohm termination. Adjust TUNING control to position LO feedthrough signal on leftmost vertical graticule line. Set RESOLUTION BW control to 10 kHz, leaving FREQ SPAN/DIV set to 10 MHz.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS - - 4 - 19. FREQUENCY RESPONSE SPECIFICATION: Frequency response measured with 0 or 10 dB of input attenuation includes input attenuator flatness, mixer flatness, and band - to - band amplitude variation.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 19. FREQUENCY RESPONSE (Cont'd) NOTE The HP 853A Spectrum Analyzer Display is not recommended for use in this procedure. The HP 8350A Sweep Oscillator may be substituted for the HP 8620C in this procedure, if necessary.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 19. FREQUENCY RESPONSE (Cont'd) Sweep Oscillator: CW Frequency ............. MARKERS ............... ............ SWEEP MODE ......... SWEEP TRIGGER SWEEP - TIME - SEC ........ RF OFF - ON .....
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 19. FREQUENCY RESPONSE (Cont'd) 4. Adjust spectrum analyzer TUNING control for a FREQUENCY GHz readout of 0.100. Set sweep oscilla - tor to CW with frequency of 100 MHz and use CW control to center signal on spectrum analyzer display.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 19. FREQUENCY RESPONSE (Cont'd) NOTE Use maximum possible ALC GAIN to avoid leveling errors during swept measurements. Do not adjust spectrum analyzer REF LEVEL FINE control or sweep oscillam tor POWER LEVEL control during the remaining steps of this performance test.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4.19. FREQUENCY RESPONSE (Cont'd) Frequency Response, 3 - 18 GHz NOTE For the higher frequency bands, multiple responses may appear on spec - trum analyzer display during frequency response measurement.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A - - 4 - 19. FREQUENCY RESPONSE (Cont'd) 21. Select 9 - 15 GHz frequency band on spectrum analyzer. Set sweep oscillator to CW and frequency to 12.0 GHz. Use CW control to center signal on spectrum analyzer display.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 19. FREQUENCY RESPONSE (Cont'd) 26. Subtract mean deviation of step 16 from maximum and minimum values recorded in step 25. Frequency response for 12.1 - 18 GHz portion of 12.1 - 21 GHz frequency band should not exceed + 2.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 19. FREQUENCY RESPONSE (Cont'd) TABLE 4-7. CORRECTING FOR FREQUENCY RESPONSE OF SIGNAL SOURCE Frequency (G Hz) 18.0 *deviation relative to Power Meter lndication (d Bm) Power Deviation* (dB) 0 (Ref .
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 20. GAlN COMPRESSION SPECIFICATION: Gain compression is less than 0.5 dB for a - 10 dBm input level with 0 dB attenuation. DESCRIPTION: Gain compression is measured by changing the power level at the spectrum analyzer input from - 20 dBm to - 10 dBm.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 20. GAIN COMPRESSION (Cont'd) PROCEDURE: 1. Set equipment controls as follows: Spectrum Analyzer: FREQUENCYBANDGHz .................................................. .01-3 ......................
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 20. GAIN COMPRESSION (Cont'd) Adjust signal generator OUTPUT LEVEL control for a power meter reading of - 10 dBm ( - 20 dBm at spectrum analyzer 50Q connector). Set spectrum analyzer INPUT ATTEN control to 0 dBm, REFERENCE LEVEL control to - 20 dBm, and REF LEVEL FINE control to 0.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4.21. BANDWIDTH SWITCHING (AMPLITUDE VARIATION) SPECIFICATION: Bandwidths 3 MHz to 300 kHz: < + 0.5 dB Bandwidths 3 MHz to 1 kHz: < + 1 .O dB DESCRIPTION: The CAL OUTPUT signal is applied to INPUT 50Q connector and displayed on CRT.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4-21. BANDWIDTH SWITCHING (AMPLITUDE VARIATION) (Cont'd) TABLE 4-8. BANDWIDTH SWITCHING (AMPLITUDE VARIATION) RESOLUTION BW Setting 100 kHz 30 kHz .
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 22. INPUT ATTENUATOR ACCURACY SPECIFICATION: Step Accuracy (0 dB to 60 dB): < k 1.0 dB per 10 - dB step, 0.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 22. INPUT ATTENUATOR ACCURACY (Cont'd) PROCEDURE: Connect equipment as shown in Figure 4 - 17 and set controls as follows: Spectrum Analyzer: .................................................. FREQUENCY BAND GHz .
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4.22. INPUT ATTENUATOR ACCURACY (Cont'd) TABLE 4-9. INPUT AllENUATOR ACCURACY INPUT ATTEN Setting (dB) Step Attenuator Setting (dB) Amplitude Deviation (dB) Step Attenuator Error (Calibration) " Corrected Deviation (dB) I *Attenuations > dial settings are positive (+).
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 23. REFERENCE LEVEL ACCURACY SPECIFICATION: Step Accuracy (steps referenced with 0 dB input attenuation): - 10 dBm to - 80 dBm: + 0.
PERFORMANCE TESTS PERFORMANCE TESTS MODEL 8559A 4 - 23. REFERENCE LEVEL ACCURACY (Cont'd) PROCEDURE: Step Accuracy in Log Mode Set equipment controls as follows: Spectrum Analyzer: FREQUENCYBANDGHz ................................................
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 23. REFERENCE LEVEL ACCURACY (Cont'd) REFERENCE LEVEL Setting (dBm) Corrected Deviation (dB) TABLE 4 - 10. IF GAIN ACCURACY IN LOG MODE *Attenuations > dial settings are positive (+). Attenuations < dial settings are negative ( - ).
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 23. REFERENCE LEVEL ACCURACY (Cont'd) TABLE 4-11. IF GAIN ACCURACY IN LINEAR MODE Step Attenuator Setting (dB) I Deviation from 6th Division Linear Mode (div.) REFERENCE LEVEL Setting (d Bm) - 10 - 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100 0 (Ref.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 23. REFERENCE LEVEL ACCURACY (Cont'd) Vernier Accuracy 9. Replace 10 - dB step attenuator with 1 - dB step attenuator. Set spectrum analyzer controls as follows: FREQUENCY BAND GHz .............
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 24. SWEEP TlME ACCURACY SPECIFICATION: There are 20 selectable and calibrated sweep times in a 1 - 2 - 5 sequence from 2 pec/DIV to 10 sec/DIV (excluding 2 sec/DIV) .
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 24. SWEEP TIME ACCURACY (Cont'd) PROCEDURE: 1. Set equipment controls as follows: Spectrum Analyzer: .................................................. FREQUENCY BAND GHz .0 1 - 3 TUNING .......
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 24. SWEEP TIME ACCURACY (Cont'd) 2. Connect equipment as shown in Figure 4 - 19. Connect counter's B 10 MHz input to the function generator low output and the signal generator's AM input.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 24. SWEEP TIME ACCURACY (Cont'd) TABLE 4-14, SWEEPTIME ACCURACY, 2pSECTHROUGH 10 MSEC 2 psec 5 psec 10 psec 20 psec 50 psec .
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 24. SWEEP TIME ACCURACY (Cont'd) TABLE4-15. SWEEPTIME ACCURACY, 20 MSECTHROUGH 10SEC WEEP TIMEIDIV Setting 20 msec 50 msec .1 sec .2 sec .5 sec 1 sec 5 sec 10 sec Sweep Time Minimum I Actual I Maximum 9.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 25. CALIBRATOR OUTPUT ACCURACY SPECIFICATION: Amplitude: - 10 dBm + 0.3 dB Frequency: 35 MHz + 400 kHz DESCRIPTION: The frequency of the calibrator output signal is measured with a microwave counter.
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS , 4 - 26. DISPLAY FIDELITY SPECIFICATION: Log Incremental Accuracy: f 0.1 dB per dB from Reference Level Log Maximum Cumulative Error: < +_ 1.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 26. DISPLAY FIDELITY (Cont'd) FREQ SPAN/DIV ......................................................... 500 kHz RESOLUTION BW .............................................. 300 kHz, uncoupled INPUT ATTEN .
PERFORMANCE TESTS MODEL 8559A PERFORMANCE TESTS 4 - 26. DISPLAY FIDELITY (Cont'd) TABLE 4 - 16. AMPLITUDE LOG DISPLAY ACCURACY Attenuator Setting (dB) 0 10 20 30 40 50 60 70 DVM Reading (mV) I *DVM Reading minus Corrected DVM Reading* (mV) +800 (Ref.
MODEL 8559A PERFORMANCE TESTS PERFORMANCE TESTS 4 - 26. DISPLAY FIDELITY (Cont'd) Algebraically subtract each converted reading (Theoretical Reading Subtracted from Corrected DVM Reading) from previous converted reading. Record results in Table 4-16 (see sample computations).
PERFORMANCE TESTS MODEL 8559A TABLE 4 - 18. PERFORMANCE TEST RECORD (1 OF 4) HewlettPackard Company Model 8559A Spectrum Analyzer .01-21 GHz Serial No. Para. No. Test Description Frequency Span Accuracy 3. 200 MHz FREQ SPANIDIV 4. 100 MHz FREQ SPANIDIV 5.
MODEL 8559A Para. No. 4.13. 4-1 4. 4-1 5. 4-1 6. 4 - 17. PERFORMANCE TESTS TABLE 4 - 18. PERFORMANCE TEST RECORD (2 OF 4) Test Description Residual FM 6. Peak - to - Peak Variation of Trace Noise Sidebands 6. Noise Sidebands Resolution Bandwidth Accuracy 7.
PERFORMANCE TESTS MODEL 8559A TABLE 4 - 18. PERFORMANCE TEST RECORD (3 OF 4) Para. No. Test Description Residual Responses 6. Residual Responses, .Ol GHz to 3 GHz 7. Residual Responses, .Ol GHz to 3 GHz (ALT IF) Frequency Response 15. Frequency Response, .
MODEL 8559A PERFORMANCE TESTS TABLE 4 - 18. PERFORMANCE TEST RECORD (4 OF 4) Para. No. Test Description Sweep Time Accuracy 7. Sweep Time, 2 psecldiv 8. Sweep Time, 5 psec/div Sweep Time, 10 psecldiv Sweep Time, 20 psecldiv Sweep Time, 50 psecldiv Sweep Time, .
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MODEL 8559A ADJUSTMENTS SECTION V ADJUSTMENTS 5-1. INTRODUCTION 5-2. This section describes the adjustments used to restore the HP 8559A to its peak operating condition after a repair or to compensate for changes resulting from component aging. Illustrations showing the appropriate test setups are included in the adjust - ment procedures.
ADJUSTMENTS MODEL 8559A 5 - 13. RELATED ADJUSTMENTS 5- 14. These adjustments should be performed when the troubleshooting information in Section VIII indicates that an adjustable circuit is not operat- ing correctly. Perform the adjustments after repair or replacement of the circuit.
MODEL 8559A TABLE5-1. ADJUSTABLECOMPONENTS (1 OF 3) ADJUSTMENTS Adjustment Name GAIN OFFSET 2nd MIXER MATCH z 1 22 23 2nd LO FREQUENCY 3 GHz - lov +14.
ADJUSTMENTS MODEL 8559A TABLE 5-1. ADJUSTABLE COMPONENTS (2 OF 3) Adjustment I Name LC CTR CTR C73 (LC DIP) C74 (LC DIP) LC XTL RF GAIN l0D (10 dB) 20D (20 dB) 40D (40 dB) LC CTR CTR SYM LC CTR CTR C7.
MODEL 8559A ADJUSTMENTS TABLE 5 - 1. ADJUSTABLE COMPONENTS (3 OF 3) Adjustment Name LOG GAIN 1 dB (offset) OD (0 dB) - 12D ( - 12 dB) 1 B 2B 3B 4B 5B 5C 6B 6C 1 A 2A 3A 4A 5A 6A v3+ v3 - v1 v2 - v2+ S.
ADJUSTMENTS MODEL 8559A TABLE 5 - 2. RELATED ADJUSTMENTS or Repaired DPM Display DPM Driver Front Panel Switch Assembly Input Attenuator First Mixer Second Converter YIG - Tuned Oscillator Frequency C.
MODEL 8559A ADJUSTMENTS TABLE 53. FACTORY SELECTED COMPONENTS IN ALPHA - NUMERICALORDER Reference Designator r- Basis of Selection Adjusts bias on DPM Clock Oscillator. Selected to provide delay compensation for main coil sweeps. Adjusts YTO sweep linearity.
ADJUSTMENTS MODEL 8559A TABLE 5 - 4. HP PART NUMBERS OF STANDARD VALUE REPLACEMENT COMPONENTS (1 OF 3) CAPACITORS RANGE: 1 to 24 pF TYPE: Tubular TOLERANCE: 1 to 9.
MODEL 8559A ADJUSTMENTS TABLE 5-4. HP PART NUMBERS OFSTANDARD VALUE REPLACEMENT COMPONENTS (2 OF3) RESISTORS RANGE: 10 to 464K Ohms Value (52) 10.0 1 1 .o 12.1 13.3 14.7 16.2 17.8 19.6 21.5 23.7 26.1 28.7 31.6 34.8 38.3 42.2 46.4 51.1 56.2 61.9 68.1 75 .
ADJUSTMENTS MODEL 8559A TABLE 5 - 4. HP PART NUMBERS OF STANDARD VALUE REPLACEMENTCOMPONENTS (3 OF3) RESISTORS RANSE: 10 to 1.47M Ohms TYPE: Fixed - Film WATTAGE: .5 at 125°C TOLERANCE: *I% HP Part Number Value (52) HP Part Number Value (a) 4.64K 5.11K 5.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS - - 5 - 17. POWER SUPPLY CHECKS AND ADJUSTMENTS REFERENCE: A7, A8, A9 Schematics DESCRIPTION: The + 14.5V and - 10V regulated power supplies on Frequency Control Assembly A7 are adjusted.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS - - 5 - 17. POWER SUPPLY CHECKS AND ADJUSTMENTS (Cont'd) PROCEDURE: 1. Set spectrum analyzer controls as follows: FREQUENCYBANDGHz .................................................. .01-3 TUNING ...............
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 17. POWER SUPPLY CHECKS AND ADJUSTMENTS (Cont'd) NOTE The two following voltage adjustments, + 10V and VO (Varactor Offset), must be performed while the spectrum analyzer is still cold (during first five minutes after turn - on).
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 18. CALIBRATED SWEEP TIME ADJUSTMENT REFERENCE: A9 Schematic DESCRIPTION: A counter is used to adjust the time interval of the 1 millisecond per division and 5 milliseconds per division sweep times. Calibrated sweep times from 0.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 18. CALIBRATED SWEEP TIME ADJUSTMENT (Cont'd) 1. Set equipment controls as follows: NOTE If an HP 853A Spectrum Analyzer Display mainframe is used, and a sweep time faster than 10 msec is selected, an error message will appear on the analyzer's CRT and the analyzer will go into mixed mode.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 18. CALIBRATED SWEEP TIME ADJUSTMENT (Cont'd) NOTE In early instruments, A9R13 is labeled " 2 ms." The adjustment of A9R13, however, should be performed with SWEEP TlMUDlV set at 5 ms. 5. Set spectrum analyzer SWEEP TIME/DIV control to 5 msec.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS REFERENCE: A14 and A1 5 Schematics DESCRIPTION: Step attenuators are used to change the level of the input signal to the spectrum analyzer in calibrated steps.
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) PROCEDURE: 1. Set equipment controls as follows: Spectrum Analyzer: FREQUENCY BAND GHz .................................................. .0 1 - 3 TUNING .
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5-19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) Disconnect signal generator output from step attenuator. Adjust spectrum analyzer VERTICAL POSN control to position signal trace at bottom CRT graticule line.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) TABLE 5-6. LOG FIDELITY CHECK Test Limits (mV) Step Attenuator Setting (dB) Theoretical Reading (mV) Theoretical Reading Subtracted from Corrected DVM Reading (mV) DVM Reading (mV) * DVM reading minus offset recorded in step 4.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) Linear Output and Linear Step Gain 20. Disconnect AlOWl from step attenuator and reconnect to A5J2. When reconnecting A1OW1 to A5J2, do not tighten to over 6 inch pounds of torque; A5J2 can be damaged if the connector is overtightened.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) Log Gain 24. Set spectrum analyzer controls as follows: REFERENCE LEVEL .................................................... - 50 dBm Amplitudescale ...
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENTS (Cont'd) TABLE 5-10, LOG AMPLIFIER OUTPUT LIMITS Step Attenuator Setting (dB) DVM Reading (mV) Corrected DVM Reading* (mV) Test Limits (mV) Theoretical Reading (mV) Theoretical Reading Subtracted from Corrected DVM Reading (mv) * DVM Reading minus offset.
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 20. 1-dB OFFSET ADJUSTMENT REFERENCE: A 15 Schematic DESCRIPTION: Reference is set in 10 dB/DIV amplitude scale and 1 dB offset is adjusted in 1 dB/DIV for the same full display reference. Dl SPLAY SPECTRUM ANALYZER EXTENDER CABLE ASSEMBLY 0.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 20. 1 - dB OFFSET ADJUSTMENT (Cont'd) 2. Connect equipment as shown in Figure 5 - 4. 3. Adjust vertical position to align trace on bottom graticule. 4. Set tuning to 35 MHz. Set TUNING control to center the trace on the display.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS REFERENCE: A9, A1 1, and A13 Schematics DESCRIPTION: The crystal and LC bandwidth filter circuits are adjusted for symmetry, center, and peak. The 3 - dB bandwidths are adjusted with Sweep Generator/Bandwidth Control Assembly A9 (paragraph 5 - 22).
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) TERMINAL CONNECTORS FIGURE 5-6. CRYSTAL SHORT CONFIGURATION PROCEDURE: NOTE Allow 30 minutes warmup time before performing adjustments. 1. Set spectrum analyzer controls as follows: FREQUENCYBAND .
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) Center the signal with TUNING control. Using REF LEVEL FINE control, place signal peak at 7.1 divisions (0.9 division from top graticule line). Adjust A9R85 LC until signal is five divisions wide at the fifth graticule line (1 MHz wide at 3 - dB points).
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) CHECK CENTERING HERE (SPIKE IS CRYSTAL RINGING) CHECK SYMMETRY HERE (LOW ON SKIRTS) FIGURE 5-7. ADJUSTING CRYSTAL SYMMETRY AND CRYSTAL CENTERING Remove crystal short from A13TP 1 /TP2 and connect it across A1 3TP4/TP5.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) LC Alignment Accidentally shorting the case of A9Q1 (directly below A9TP6) to ANY test point will cause catastrophic failure to Sweep Generator Assembly A9. 24. Set RESOLUTION BW control to 100 kHz.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) 26. Short to ground A1 lTP3, A1 lTP6, and A13TP3. Set RESOLUTION BW to 100 kHz and set FREQ SPAN/DIV to 20 kHz.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (Cont'd) Adjust FINE TUNING and REF LEVEL FINE controls for a centered signal at 7 divisions from bottom graticule line. Remove shorts from A13TP3 and A13TP6 and center signal with FINE TUNING control.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 22. 3.dB BANDWIDTH ADJUSTMENTS REFERENCE: A9 Schematic DESCRIPTION: The 3 - dB bandwidths for the 3 MHz through the 30 kHz RESOLUTION BW settings are adjusted using the CAL OUTPUT as the signal source.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 22. 3 - dB BANDWIDTH ADJUSTMENTS (Cont'd) PROCEDURE: Set spectrum analyzer controls as follows: FREQUENCYBAND ................................................. 0.01-3GHz TUNING .............................
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 22. 3 - dB BANDWIDTH ADJUSTMENTS (Cont'd) NOTE If the 100 kHz bandwidth is not within the specified limits, change the values of factory - selected resistors A11R19*, A11R43*, A13R19*, and A13R43*.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 22. 3 - dB BANDWIDTH ADJUSTMENTS (Cont'd) Adjust A9R72 XTL to bring signal level to the fifth graticule line (three divisions from the top graticule line). Increase signal generator frequency until signal on CRT display peaks and then decreases to the fifth graticule line.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 22. 3 - dB BANDWIDTH ADJUSTMENTS (Cont'd) Increase signal generator frequency until signal on CRT display decreases to the fifth graticule line. Record the counter frequency. Compare new frequency with frequency originally noted in step 25.
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 23. RF GAlN ADJUSTMENT REFERENCE: A12 Schematic DESCRIPTION: The RF gain (sensitivity) of Step Gain Assembly A12 is adjusted by injecting a 21.4 MHz signal at XAlOPl. Third Converter Assembly A10 is removed and replaced with a special extender board for applying the 21.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 23. RF GAIN ADJUSTMENT (Cont'd) NOTE To make special extender board, solder 51.1 ohm resistor from pin 18 to pin 22 of standard 24 pin extender board, HP Part No. 5060-0258. Leave resistor leads long for easy connection of clip leads.
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 23. RF GAlN ADJUSTMENT (Cont'd) When reconnecting A1OW1 to A5J2, exercise caution; the connector should not be torqued more than 6 inch - pounds, othewise damage to A5J2 will result. NOTE Front panel VERTICAL GAlN and POSN control settings can affect the volt - age measured at A15TP1.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 24. STEP GAlN ADJUSTMENTS REFERENCE: A12 Schematic DESCRIPTION: REF LEVEL FINE, 0 dB, and - 12 dB adjustments are properly set and step gains of 10 dB, 20 dB, and 40 dB are adjusted. SIGNAL GENERATOR . DIGITAL VOLTMETER l NPUT Dl SPLAY ATTENUATOR RF OUTPUT STEP ATTENUATOR FIGURE 5 - 10.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 24. STEP GAIN ADJUSTMENTS (Cont'd) PROCEDURE: Set spectrum analyzer controls as follows: FREQSPAN/DIV .......................................................... lMHz ........................................
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 24. STEP GAIN ADJUSTMENTS (Cont'd) NOTE Some video filtering might help reduce noise. Set VIDEO FILTER control so noise is reduced, but the signal amplitude remains unchanged. 16. Adjust A12R29 40 D adjustment for signal level one division from top graticule line.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS REFERENCE: A3, A4, AS, A6, and A7 Schematics DESCRIPTION: The First LO (A6 YTO) is adjusted by monitoring the YTO output at the .
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (Cont'd) First LO Adjustments 2. Connect DVM to A7TP6 TUNE. 3. Set spectrum analyzer controls as follows: INPUT ATTEN ........................................................
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (Cont'd) Alternate IF First LO Shift Check 15. Press front - panel ALT IF pushbutton IN to activate alternate IE 16. Verify YTO frequency shift according to Table 5 - 12. FREQUENCY BAND GHz 17.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (Cont'd) Adjust front - panel TUNING FINE control to place a comb tooth on the first vertical graticule line of the CRT display. Adjust A7R92 FM to place a comb tooth on the ninth vertical graticule line of the CRT display.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (Cont'd) Set FREQ SPAN/DIV to 1 MHz. Note position of comb tooth. Adjust A7R81 (MO) to place comb tooth midway between position noted in step 38 and center graticule line. Set FREQ SPAN/DIV to 2 MHz.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 26. SECOND CONVERTER ADJUSTMENTS REFERENCE: A3, A4, AS, A6, and A8 Schematics DESCRIPTION: First, the Second LO is adjusted for proper frequency using a frequency counter.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 26. SECOND CONVERTER ADJUSTMENTS (Cont'd) PROCEDURE: Second LO Preliminary Adjustment Allow one - half hour warm - up time of equipment with analyzer connected to mainframe with extender cable. Connect frequency counter input to A5J3 2nd LO output using the test cable and two SMB adapters.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 26. SECOND CONVERTER ADJUSTMENTS (Cont'd) nrn ALT IF on and verify that the two signals do not appear to move.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 26. SECOND CONVERTER ADJUSTMENTS (Cont'd) The requirements for the converter response are illustrated in Figure 5 - 13a and are as follows: Bandpass should be at least 17 MHz, 1 dB down. Amplitude of response at 3.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 26. SECOND CONVERTER ADJUSTMENTS (Cont'd) THESE POINTS SHOULD BE AT SAME AMPLITUDE WITH BANDPASS >17 MHz WIDE 1 dB DOWN AS SHOWN r - 3.75 DIV 1 +3.75 DIV THESE POINTS SHOULD BE AT SAME AMPLITUDE LEVEL k0.
ADJUSTMENTS ADJUSTMENTS MODEL 8559A 5 - 27. THIRD CONVERTER ADJUSTMENTS REFERENCE: A10 Schematic DESCRIPTION: First, the Third LO is adjusted for proper frequency using a frequency counter. Next, the second IF bandpass filter is aligned by injecting a frequency modulated 321.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 27. THIRD CONVERTER ADJUSTMENTS (Cont'd) PROCEDURE: 1. Allow one-'lalf hour warmup time of equipment with analyzer connected to mainframe with extender cable. Third LO Adjustment 2. Connect frequency counter to AlOJl 300 MHz output using the BNC to SMB test cable.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 27. THIRD CONVERTER ADJUSTMENTS (Cont'd) Adjust function generator amplitude and frequency for at least 10 MHz deviation (k 5 MHz) and an easy- to - view display on the 8569B spectrum analyzer. Refer to Figure 5-15.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS REFERENCE: A3, A4, AS, A6, and A12 Schematics NOTE Perform CAL OUTPUT and REF LEVEL CAL adjustments (5-29) before pro - ceeding with frequency response adjustments.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) FROM AUX ANALYZER D { STP >-h +5v +, 4 -IOV REFERENCE DESIGNATOR CRl J 1 52 R1 R2 R3 R4 R5 R6 R7 R8 u 1 + &a.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) EQUIPMENT: Sweep Oscillator ......................................................... HP 8620C RF Plug - In (.01- 2.4 GHz) .......................................
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) 5. Set spectrum analyzer controls as follows: REF LEVEL FINE .......................................................... 0 dBm REFLEVELdBm ........................
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) 11. Adjust Tuning Voltage Circuit GAIN control to expand the phase - locked display over 8 1/2 divisions on CRT (.01- 2.4 GHz). Refer to Figure 5 - 18b. It may be necessary to readjust OFFSET slightly to achieve phase - lock over entire range.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) 26. Adjust Tuning Voltage Circuit GAIN and OFFSET controls to phase - lock swept signal from 2 to 3 GHz. 27. Adjust RF plug - in POWER LEVEL control to place trace at approximately - 27 dBm on CRT.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) ROLL - OFF AT ~2.5 GHz BAND SWITCH POlNT AT 6.2 GHz a. BAND 1 L01-3 GHz) BAND SWITCH POlNT AT 6.2 GHz b. BAND 2 (6 - 9 GHz) BAND SWITCH POlNT AT 12.4 GHz c. BAND 3 (3 - 9 GHz) BAND SWITCH POINT BAND SWITCH POINT AT 6.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) 3 to 9 GHz Adjustment 39. Change synchronizer POLARITY to - . 40. Change spectrum analyzer Amplitude Scale to 10 dB/DIV and FREQUENCY BAND GHz to 3 - 9. 41. Adjust sweep oscillator for swept output from 3 to 9 GHz.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd) 57. Change spectrum analyzer Amplitude Scale to 1 dB/DIV. 58. Adjust A12R71 V3 - (bias), A12R61 5A (offset), A1.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 29. CAL OUTPUT AND REF LEVEL CAL ADJUSTMENTS NOTE These adjustments should be followed by frequency response adjustments, since adiustment of A12R57 1A (offset) will shift the freauencv resDonse of Band 1 (.bl - 3 GHz).
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 29. CAL OUTPUT AND REF LEVEL CAL ADJUSTMENTS (Cont'd) PROCEDURE: CAL OUTPUT Adjustment 1. Allow one-half hour warmup time of equipment with spectrum analyzer connected to mainframe with extender cable. 2. Connect power meter/power sensor to front-panel CAL OUTPUT connector as shown in Figure 5-20.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 29. CAL OUTPUT AND REF LEVEL CAL ADJUSTMENTS (Cont'd) 15. Signal peak should now be approximately at top graticule line (Reference Level) on CRT. 16. Switch between 10 dB/DIV and LIN while adjusting A12R57 1A (offset) to place signal peak at same level in both 10 dB/DIV and LIN.
MODEL 8559A ADJUSTMENTS ADJUSTMENTS 5 - 30. FREQUENCY DISPLAY ADJUSTMENTS REFERENCE: A1 and A8 Schematics DESCRIPTION: The Digital Panel Meter (DPM) OFFSET and GAIN controls are adjusted for proper FREQUENCY display indication at corresponding tuning voltage (DPMA) levels.
ADJUSTMENTS MODEL 8559A ADJUSTMENTS 5 - 30. FREQUENCY DISPLAY ADJUSTMENTS (Cont'd) PROCEDURE: Allow one - half hour warmup time of equipment with analyzer connected to mainframe with extender cable. Jumper A8TP5 DPM to ground. Set front - panel FREQUENCY BAND GHz to Band 1 (.
MODEL 8559A REPLACEABLE PARTS SECTION VI REPLACEABLE PARTS 6-1. INTRODUCTION The replaceable parts list breakdown for each 6-5. The following information is listed for each part: 1. The Hewlett-Packard part number. major assembl y is located in Section VIII, following 2.
REPLACEABLE PARTS MODEL 8559A TABLE 6.1. REFERENCE DESIGNATIONS AND ABBREVIATIONS (1 OF 3) REFERENCE DESIGNATIONS Assembly ........................ Attenuator, Isolator, .............. Limiter, Termination Fan,Motor ...................... Battery ....
MODEL 8559A REPLACEABLE PARTS TABLE 6-1. REFERENCE DESIGNATIONSAND ABBREVIATIONS (2 OF 3) J - FET ........... Junction Field Effect Transistor JFET ............ Junction Field Effect Transistor K ......... Kelvin, Key, Kilo, Potassium KNRLD ..........
REPLACEABLE PARTS MODEL 8559A TABLE 6-1. REFERENCE DESIGNATIONS AND ABBREVIATIONS (3 OF 3) TABLEG - 2. MANUFACTURERS CODE LIST MULTIPLIERS Mfr. No. Abbreviation Prefix Multiple T tera 1012 G gigs lo9 .
MODEL 8559A REPLACEABLE PARTS Reference Designator A 1 AlAl A1A2 A 2 A2A1 A3 A4 A 5 A6 A 7 A8 A 9 A10 A1 1 A12 A13 A14 A15 A16 HP Part Number TABLE 6-3.
REPLACEABLE PARTS MODEL 8559A HP Part Number TABLE 6-3. REPLACEABLE PARTS Description ACCESSORIES SUPPLIED SIDE STOP KIT ADAPTER, TYPE N MALE TO BNC FEMALE CRT - OVERLAY, HP 180 SERIES DISPLAYS CRT - OVERLAY. HP 181 SERIES DISPLAYS CRT - OVERLAY. HP 182 SERIES DISPLAYS ECONOMY S.
MODEL 8559A REPLACEABLE PARTS Reference Designator HP Part Number TABLE 6-3. REPLACEABLE PARTS Description MISCELLANEOUS CHASSIS PARTS ELECTRICAL CAP (MOUNTED ON REAR PANEL) CAP (MOUNTED ON REAR PANEL.
REPLACEABLE PARTS MODEL 8559A HP Part Number Description PANEL, FRONT GUSSET, LEFT SIDE GUSSET, RIGHT SIDE PANEL, REAR RAIL. GUIDE TOP EXTRUSION, CIRCUIT ENCLOSURE, TAPPED EXTRUSION. END PLATE ENCLOSURE EXTRUSION, CIRCUIT ENCLOSURE, TAPPED EXTRUSION, CIRCUIT ENCLOSURE WINDOW, FREQ.
.
MODEL 8559A MANUAL BACKDATING CHANGES SECTION VII MANUAL BACKDATING CHANGES 7-1. INTRODUCTION 7 - 2. This section contains information for adapting this manual to earlier 8559A Spectrum Analyzers.
Page 1 - 3: Table 1-1. HP 85596 Specifications (1 of 4) 2236A & Below Change " Residual FMw specification to read as follows: less than 1 kHz p - p for a time interval less than or equal to .O1 sec, 100/120 line voltages; less than 2 kHz p - p, 220/240 line voltages.
/ - Pages 4 - 10 and 4 - 11: Paragraph 4 - 13. Residual RI 2320A & Below Change SPECIFICATION to read as follows: Less than 1 kHz peak - to - peak for a time interval 0.1 second; 100/120 line voltages; less than 2 kHz peak - to - peak in a 180- series display mainframe with 220/240 line voltage.
Page 4 - 63: Table 4 - 18. Performance Test Record (2 of 4) 2320A & Below Under Para. No. 4 - 13. Residual FM, change the maximum Peak-to- Peak Variation of Trace in test 6 to 0.
- Pages 5 - 11 through 5 - 13: Paragraph 5 - 17. Power Supply Checks and Adjustments 2236A & Below Replace Paragraph 5 - 17 with new Paragraph 5 - 17 (SERIAL PREFIX 2236A) included in this Manual Backdating supplement.
/ -- ADJUSTMENTS 5 - 17. POWER SUPPLY CHECKS AND ADJUSTMENTS (SERIAL PREFIX 2236A) REFERENCE: A7, A8, A9 Schematics DESCRIPTION: The + 14.5V and - 10V supplies on Frequency Control Assembly A7 are adjusted. The - 12.OV supply on A7 is checked for proper dc output with less than + 50 mV variation when tuning the HP 8559A from 0 to 3 GHz.
ADJUSTMENTS 5 - 17. POWER SUPPLY CHECKS AND ADJUSTMENTS (SERIAL PREFIX 2236A) (Cont'd) 6. Remove extender board and reinstall Frequency Control Assembly A7. NOTE The two following voltage adjustments, + 10V and VO (Varactor Offset), must be adjusted while analyzer is still cold (during first five minutes after turn - on).
Pages 5 - 17 through 5 - 23: Paragraph 5 - 19, Log Amplifier and Linear Adjustments 2208A & Below Replace Paragraph 5 - 19 with new Paragraph 5 - 19 (SERIAL PREFIX 2208A) included in this Manual Backdating supplement.
ADJUSTMENTS 5.19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENT (SERIAL PREFIX 2208A) REFERENCE: A14 and A15 Schematics DESCRIPTION: 10 dB/DIV and LIN are adjusted for correct steps and full - screen display translations. DISPLAY DIGITAL VOLTMETER SIGNAL GENERATOR F UTPUT ATTENUATOR FIGURE 53.
ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENT (SERIAL PREFIX 22O8A) (Cont'd) Connect equipment as shown in Figure 5-3. Set signal generator frequency to 321.4 MHz and output level to - 40 dBm. Remove AlOW 1 from A5 J2 2nd CONV OUT. Connect signal generator output through step attenuator and adapters to AlOWl .
ADJUSTMENTS 5 - 19. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENT (SERIAL PREFIX 22O8A) (Cont'd) 12. Set step attenuator to 0 dB. Digital voltmeter should indicate 800 mV, plus offset (algebraic sum) * 1 mV.
ADJUSTMENTS 519. LOG AMPLIFIER LOG AND LINEAR ADJUSTMENT (SERIAL PREFIX 22O8A) (Cont'd) Set output level of signal generator for a digital voltmeter reading of 800 mV plus offset (algebraic sum) f lmY Set Amplitude Scale to 10 dB/DIV and adjust A14R2 LOG LIN adjustment for a digital voltmeter reading of 800 mV plus offset.
Pages 5 - 26 through 5 - 32: Paragraph 5 - 21. Bandwidth Filter Adjustments 1909A & Below Replace Paragraph 5 - 21 with new Paragraph 5 - 21 (SERIAL PREFIX 1909A) included in this Manual Backdating supplement.
ADJUSTMENTS 521. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) REFERENCE: A9, A 1 1, and A1 3 Schematics DESCRIPTION: The crystal and LC bandwidth filter circuits are adjusted for symmetry, center, and peak. ThreedB bandwidths are adjusted in Sweep Generator/Bandwidth Control Assembly A9 (paragraph 5 - 22).
ADJUSTMENTS , 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) PROCEDURE: NOTE Allow 30 minutes warmup time before performing adjustments. 1. Set spectrum analyzer controls as follows: FREQUENCYBANDGHz .........................
ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) 11. Set FREQ SPAN/DIV to 20 kHz, RESOLUTION BW to 30 kHz, and SWEEP TIME/DIV to 10 mSEC. NOTE A non - metallic tuning tool is required for adjustments on Bandwidth Filter Assemblies A1 1 and A1 3.
ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) 16. Adjust A13C15 SYM and A13C25 CTR for a centered and symmetrical bandpass. Adjust A13C25 CTR for minimum signal amplitude, 17. Remove crystal short from A1 lTP4/TPS.
ADJUSTMENTS 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) 23. Carefully center signal on CRT in 30 kHz RESOLUTION BW; then switch RESOLUTION BW to 100 kHz. Note where signal intersects the center vertical graticule line. 24.
ADJUSTMENTS , 5 - 21. BANDWIDTH FILTER ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) 37. Set FREQ SPAN/DIV to 10 kHz and RESOLUTION BW to 1 kHz with arrows aligned (OPTIMUM). Push in to couple the two controls. 38. Adjust REF LEVEL FINE for a signal amplitude of 7 divisions.
Pages 5 - 33 through 5-37: Paragraph 5 - 22. 3 dB Bandwidth Adjustslent 1909A & Below Replace Paragraph 5 - 22 with new Paragraph 5 - 22 (SERIAL PREFIX 1909A) included in this Manual Backdating supplement.
ADJUSTMENTS / -- 5 - 22. 3 dB BANDWIDTH ADJUSTMENTS (SERIAL PREFIX 1909A) REFERENCE: A9 Schematic DESCRIPTION: The 3 - dB bandwidths for the 3 MHz, 1 MHz and 300 kHz RESOLUTION BW settings are adjusted using the CAL OUTPUT as the signal source.
ADJUSTMENTS 5 - 22. 3 dB BANDWIDTH ADJUSTMENTS (SERIAL PREFIX l9O9A) (Cont'd) 3. Set signal level of 7.1 divisions on display with REF LEVEL FINE control. (Signal should be 0.9 division from top graticule line.) 4. Set RESOLUTION BW to 1 MHz and FREQ SPAN/DIV to 200 kHz.
/ - ADJUSTMENTS 5 - 22. 3 dB BANDWIDTH ADJUSTMENTS (SERIAL PREFIX 1909A) (Cont'd) 10. Remove AlOWl from A5J2 2nd CONV OUT Connect step attenuator through adapter to A1OW 1. 11. Set HP 8559A RESOLUTION BW to 1 MHz. Adjust the output level of signal generator to place the signal near center graticule line.
ADJUSTMENTS * 5 - 22. 3 dB BANDWIDTH ADJUSTMENTS (SERIAL PREFIX lgO9A) (Cont'd) Compare new frequency with frequency recorded in step 20. The difference between the two frequencies should be 9.
Pages 5 - 44 through 5 - 48: Paragraph 5 - 25. First Converter Ad justrents 2236A & Below Replace Paragraph 5 - 25 with new Paragraph 5 - 25 (SERIAL PREFIX 2236A) included in this Manual Backdating supplement. 2004A & Below Delete steps 28 through 37.
ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (SERIAL PREFIX 2236A) REFERENCE: A3, A4, AS, A6, and A7 Schematics DESCRIPTION: The First LO (A6 YTO) is adjusted by monitoring the YTO output at the RF.
ADJUSTMENTS 5 - 25. FIRST CONVERTER ADJUSTMENTS (SERIAL PREFIX 2236A) (Cont'd) Connect frequency counter to analyzer RF Input. Jumper A16TP1 DIODE BIAS to Ground. A16TP1 is located on the Motherboard through a hole in the analyzer side frame. Adjust front-panel TUNING control for DVM indication of 0.
ADJUSTMENTS /' - 5 - 25. FIRST CONVERTER ADJUSTMENTS (SERIAL PREFIX 2236A) (Cont'd) FM Driver Adjustment 18. Disconnect frequency counter from analyzer RF Input and connect comb generator to RF Input, 19. Set comb generator for 1 MHz comb teeth.
ADJUSTMENTS , 5 - 25. FIRST CONVERTER ADJUSTMENTS (SERIAL PREFIX 2236A) (Cont'd) 32. Set FREQ SPAN/DIV to 1 MHz. Note position of comb tooth. 33. Adjust A7R99 MO to place comb tooth midway between position noted in step 32 and center graticule line.
/ - Page 6 - 7: Table 6 - 3. Replaceable Parts 2236A & Below Change W3 to HP Part Number 1250 - 1159, Check Digit 4, CABLE ASSEMBLY, YTO TO FIRST MIXER. 1951A.1945A Change W4 to HP Part Number 08559 - 60001, Check Digit 3, & Below CABLE ASSEMBLY, CAL OUTPUT.
Page 6-8: Figure 6-1, Mechanical Chassis Parts 2236A & Below Change item (21, GUSSET, LEFT, to HP Part Number 08559-60032, Check Digit 4. Change item (3), GUSSET, RIGHT, to HP Part Number 08559 - 60031, Check Digit 3. 2208A & Below Change item (I), PANEL, FRONT, to HP Part Number 08559 - 00001, Check Digit 7.
Pages 8 - 17 through 8-23/8-24: DIGITAL PANEL METER ASSEneLY A1 Table 8 - 1. Digital Panel Meter Assembly A1, Replaceable Parts 221 8A & Below Replace Table 8 - 1 with new Table 8 - 1 (SERIAL PREFIX 2218A) included in this Manual Backdating supplement.
DIGITAL PANEL METER ASSEMBLY AI, REPLACEABLE PARTS (SERIAL PREFIX 2218A) Reference Designation HP Part Number Description FREQUENCY DISPLAY ASSEHRI Y DPH DISPLAY DISPLAY NUH SCG I - CHAR .3 11 DICjPL AY NllH :KC 1 CHAR .3 H DISPLAY - NUH -SFG 1 - CHAR .
A1A2 DPM DRIVER OFFSET AlAl DPM DISPLAY FIGURE 85. DIGITAL PANEL METER ASSEMBLY Al, COMPONENT LOCATIONS (SERIAL PREFIX 2218A).
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/ - Pages 8 - 25 through 8-49/8-50: FROtiI WITCH JBSEllBLY A2 Figure 8 - 10. Front Switch Assembly 62, Exploded View 2208A & Below Delete Figure 8 - 10. 2109A00441 Add HP Part Number 08558-00021, Check Digit 0, PLATE LEVEL, & Below POT (S1). Table 8-2.
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TABLE 8-2. FRONT SWITCH BOARD ASSEMBLY A2, REPLACEABLE PARTS (2 OF 2) (SERIAL PREFIX 2218A) Reference Designation HP Part Number Description SPACFR ,5001. ,11411) (51, 53, 54, S'J, $6,) SPACFR ROTOR (S5) SPR CC'R .1800U ($1, !i3, 54, GS, :ib) IsPR CPR .
Pages 8 - 51 through 8-6W8-66: YIC-TUUED OSCILLATOR MEHBLY A6 Table 8 - 3. BF Section, Replaceable Parts 2240A & Below Add A5MP3, HP Part Number 08559 - 20041, Check Digit 7, COVER, 2ND L.O. Under Miscellaneous Parts: Change the quantity of HP Part Number 2200 - 0119 from 7 to 9.
- I - I A6 YIG - TUNED OSCl LLATOR (FIRST LO: . 5086 - 7301 YDR - J2 1, FROM A7PI-21 YC - FROM A7PI-21 YC+ FROM A7PI-20 YDR+ (+I5V) FROM A7PI-24 +I4 5V FROM A7PI-I0 I I -IOV FROM A7PI-32 I YFM- FROM A7Pl-15.
Pages 8 - 67 through 8 - 81/8 - 82: FBEQOEWCY COIlTROL ASSEHBLY A7 Table 8-4. Frequency Control Assembly A7, Replaceable Parts 2236A & Below Replace Table 8 - 4 with new Table 8 - 4 (SERIAL PREFIX 2236A) included in this Manual Backdating supplement.
Figure 8 - 29. Frequency Control Assembly A7, Schematic Diagram (1 of 2) (CO G ~'~) 2004A & Below Make the following changes in function block (A): Delete R99.
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TABLE 0-4. FREQUENCY CONTROL ASSEMBLY A7, REPLACEABLE PARTS (2 OF 3) (SERIAL PREFIX 2236A) 1 ~efeknce Designation -- - HP Part Number Description RESISTOR 3.16K 1% .1?5W r TC=O+ 100 RFSI9TOR 133 1% 12U PW TC=OI-2 RFSISTOR TRMR 20 5% WW STDT AD3 1 TRN RESISTOR 19.
TABLE 84. FREQUENCY CONTROL ASSEMBLY A7, REPLACEABLE PARTS (3 OF 3) (SERIAL PREFIX 2236A) Reference Designation HP Part Number Description CONNFCTOR -SGL CnNT PIN 1 .14 HH- HSC 57 SO A7 HIT,l'I'LI ANEOIIP. PARTS 'TRFW MACH ? Sh .:'5 TN 1 C PAN 1'071 SCRTW MACH 4 40 .
A7 FREQUENCYCONTROL FIGURE 828. FREQUENCY CONTROL ASSEMBLY A7, COMPONENT LOCATIONS (SERIAi PREFIX =A).
GND YTO % TUNE +14.5V d FIGURE 828. FREQUENCY CONTROL ASSEMBLY A7, COMPONENT LOCATIONS (SERIAL PREFIX 2208A).
YC + 40 2h5K R30 14.7 PI-ISIOUTI ,, FM FILTER +lCl +LC2 jLC.3 I 220 220 PI - 21 (OUT) - PI0 FIGURE 829. FREQUENCY CONTROL ASSEMBLY A7, SCHEMATIC DIAGRAM (SERIAL PREFIX 22084.
J D D D D D F J B B C I J C A J H I J I J J J G J B C E B E E C J A.
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Table 8-5. Harker Assembly 88, Replaceable Parts 23098 & Below Change A8 to HP Part Number 08559 - 60022, Check Digit 8. Delete A8C2. Change A8R13 to HP Part Number 0757-0438, Check Digit 3, RESISTOR 5%~ 1% .i25w F TC=O+-loo. Change A8R36 to HP Part Number 0757 - 0466, Check Digit 7, RESISTOR 1lOK 1% ,125W F TC=O+-100.
Figure 8 - 33. Marker Assembly A8, Schematic Diagram (1 of 2) 2309A & Below Change A8 to HP Part Number 08559 - 60022. Replace function block (I) of Figure 8 - 33 with new P/O Figure 8- 33 (1 of 2) (SERIAL PREFIX 2309A) included in this Manual Backdating supplement.
A8 MARKER Q R61 DPM ZERO ' FIGURE 6-32. MARKER ASSEMBLY A8, COMPONENT LOCATIONS (SERIAL PREFIX 2309A).
10 +5V POWER SUPPLY PI0 FIGURE 8 - 33. MARKER ASSEMBLY A8, SCHEMATIC DIAGRAM (1 OF 2) (SERIAL PREFIX 2309A) SIC ID 9 R40 SOOK U2B,C 3.10 OFF 4.11 , R 39 IY PI0 FIGURE 8 - 33.
Pages 8 - 97 through 8-115/8-116: WEEP GEIlERATOR/BIWI[IYIDM COmOL ASSEHBLY A9 Table 8-6. Sweep Generator/Bandwidth Control Assembly A9, Replaceable Parts 2236A & Below Change A9 to HP Part Number 08559-60074, Check Digit 0. Change A9C24 to HP Part Number 0160 - 2055, Check Digit 9, CAPACITOR - FXD .
Figure 8 - 40. Swep Generator/Bandwidth Control Assembly A9, Schematic Diagrm (2 of 2 1 2236A & Below Change A9 to HP Part Number 08559 - 60074. Change the following in function block (A): C26 to .001UF. R120* to 3830. Change the following in function block (0): R83 to 111.
TABLE 86. SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, REPLACEABLE PARTS (1 OF 4) (SERIAL PREFIX 2107A01633) Reference Desianation HP Part Number Description WEEP GENERATO!t/BANDWIDTH CONTROL CAPACITOR - FXD 2.
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TABLE 8-6. SWEEPGENERATORIBANDWIDTH CONTROL ASSEMBLY A9, REPLACEABLE PARTS (4 OF 4) (SERIAL PREFIX 2107A01633) Reference Designation HP Part Number Description CONNTCKIR-SCI. CON1 PIN 1.14 UM-HSC-O7 SR IC UP AMP LP Tfl-99 PKG IC OP AMP CP DllAL TO - 99 PKI: IC DP AMP bP 0 - TO 99 PKG DIODC 7NR 10V 5% DO - 35 PD .
A9 SWEEP GENERATOR/BANDWIDTH CONTROL FIGURE 839. SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, COMPONENT LOCATIONS (SERIAL PREFIX 2203A).
A9 SWEEP GENERATORIBANDWIDTH CONTROL FIGURE 839. SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, COMPONENT LOCATIONS (SERIAL PREFIX 2107A01633).
I RETRACE OUT BUFFER AMPLIFIER +I4 5V R 39 10% k PI - 2IIN) - - SYNC PE SHAPER @ PULSE SHAPER + 15v -2411N) IL SINGLE TRIGGER I SWITCH PI - l (OUT1 PI0 FIGURE 840.
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/- Pages 8 - 117 through 8-127/8-128: THIRD CONVERIEB ASSEUBLY A10 Table 8-7. Third Converter Assembly A10, Replaceable Parts 2218A & Below Delete the following: Aioc57, A10C58, A10C59, A10R52, A10R53, and A10U2. Chacge A10R6 to HP Part Number 0757-0280, Check Digit 3, RESISTOR 1K 1% .
8 AlOWl 321.4 MHz IF IN Q 321.4 MHz BPF ADJUST THIRD CONVERTER "4 C10 - Cll c12H J1 300 MHz LO OUT (TEST CONNECTOR) ?J LO ADJ Q , R13 CAL AMPL CAL FREO FIGURE 8-43.
Q POWER SUPPLIES PI - 24 5.11v PI - 23 - 12 6VF FIGURE 844. THIRD CONVERTER ASSEMBLY A10, SCHEMATIC DIAGRAM (SERIAL PREFIX 2218A).
Pages 8 - 129 through 8-141/8-142: BANDWIDTH FILTER w0. 1 ASSEUBLY A11 Table 8-8: Bandwidth Filter No. 1 Assembly All, Replaceable Parts 1909A & Below Change A1 1 to HP Part Number 08559 - 60057, Check Digit 9, BANDWIDTH FILTER NO. 1. Add A11C3, HP Part Number 0160-2236, Check Digit 8, CAPACITOR - FXD 1PF +-.
@FIRST LC POLE LC DIP Q, c73 IS-54pF I' L5 tV BIAS 22 R19 * I + IOVF NOTE 6 BpF CI~ R32 R4 220pF 464K IOK R26 IOOK + IOVF LC (FEEDBACK) PI0 FIGURE 856.
Pages 8 - 143 through 8-155/8-156: STEP GAIIY ASSJ9lBLY A12 Table 8 - 10. Step Gain Assembly A12, Replaceable Parts 2107A & Below Delete A12C40, A12C41, and A12C42. Figure 8 - 60. Step Gain Assembly A12, Schematic Diagram 2107A & Below In function block (El, delete C40.
/ - Pages 8 - 157 through 8-165/8-166: BAHIIWIlYlM FILTER 10. 2 ASSEMBLY A13 Table 8 - 11: Bandwidth Filter No. 2 Assembly A13, Replaceable Parts 1909A & Below Change A13 to HP Part Number 08559-60057, Check Digit 9, BANDWIDTH FILTER NO. 2. Add A13C3, HP Part Number 0160 - 2236, Check Digit 8, CAPACITOR - FXD 1PF +-.
@ FIRST LC POLE I FEEDBACK) PI0 FlGURE8-63. BANDWIDTH FILTER NO. 2ASSEMBLY A13, SCHEMATIC DIAGRAM (SERIAL PREFIX 1909A).
/' - Pages 8 - 167 through 8-179/8-180: LOG MPLIFIER ASSEHBLY A14 Table 8 - 12. Log Amplifier Assembly A14, Replaceable Parts 2208A & Below Replace Table 8 - 12 with new Table 8 - 12 (SERIAL PREFIX 2208A) included in this Manual Backdating supplement.
TABLE 812. LOG AMPLIFIER ASSEMBLY A14, REPLACEABLE PARTS (1 OF 4) (SERIAL PREFIX 2208A) Reference Designation HP Part Number Description LOG AMPLIFIER CAPACITOR - FXD .OIUF +80-20% lOOVDC CfR CAPACITOR -FXD .02UF + - 20% lOOVDC CER CAPACITOR - FXD .O?UF +-20% IOOVDC CER CAPACITOR -FXD ,021JF + - 20% 1 OOVDC CER CAPACITOR - FXD .
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Reference Designation TABLE 812. LOG AMPLIFIER ASSEMBLY A14, REPLACEABLE PARTS (3 OF 4) (SERIAL PREFlX22W) HP Part Number Description TRANSISTOR NPN SI TO - 18 PD-360HU TRANSISTOR PNP SI PD=300HU FT=l.
TABLE 812. LOG AMPLIFIER ASSEMBLY A14, REPLACEABLE PARTS (4 OF4) (SERIAL PREFIX 220814) Reference I Designation HP Part Number Description RESISTOR 316 1% ,125U F TC=O+--100 RESISTOR 6.191 1% ,125U F TC-0+-100 NOT ASSIGNED RESISTOR 2.871 1% .125U F TC=O+-100 RESI9TOR IOK 1% ,125U F TC=Ot-100 RCSISTOR 13.
R 2 @ LOGILIN- - 7v ~l/ LOG GAIN A14 LOG AMPLIFIER - - FIGURE 8 - 68. LOG AMPLIFIER ASSEMBLY A14, COMPONENT LOCATIONS (SERIAL PREFIX 2208A).
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Pages 8 - 191 and 8-199/8-200: MOTHERBOARD ASSEMBLY A16 Table 8-1 4. Motherboard Assembly A1 6, Replaceable Parts 2236A & Below Change A16 to HP Part Number 08559 - 60066, Check Digit 0. Change A16C3 and A16C21 to HP Part Number 0160 - 2055, Check Digit 9, CAPACITOR - FXD .
DIODE BIAS A16 MOTHERBOARD R4 EXT HORIZ GAIN .. XAll r-7 'J41 h-4 'I-? I I 0 XAlOPl FIGURE 8 - 76. MOTHERBOARD ASSEMBLY A16, COMPONENT LOCATIONS (SERIAL PREFIX 2236A).
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MODEL 8559A SECTION Vlll SERVICE SERVICE 8-1. INTRODUCTION the listed instrument is not available, another instru- ment that meets the required minimum specifications 8-2. This section provides instructions for trouble- may be substituted. shooting and repairing the HP Model 855914 Spec - trum Analyzer.
SERVICE MODEL 8559A 8 - 12. Printed Circuit Board Edge Connector Contact Cleaning MATERIALS: Lint - free cloth or equivalent (HP Part Number 93 10-0039, Check Digit 3). Solution of 80% electronics - grade isopropyl alcohol and 20% water. Static - free work station.
MODEL 8559A SERVICE SYMBOLS USED IN SCHEMATICS AND BLOCK DIAGRAMS BASIC COMPONENT SYMBOLS Variable Resistor: Clockwise rotation of shaft moves wiper towards end of resistor mark - ed CW.
SERVICE MODEL 8559A SYMBOLS USED IN SCHEMATICS AND BLOCK DIAGRAMS BASIC COMPONENT SYMBOLS Connection symbol indicating a Jack (except for PC board edge connectors) Connection symbol indicating a Plug (except for PC board edge connectors) Test Point: Terminal provided for test probe.
MODEL 8559A SERVICE SYMBOLS USED IN SCHEMATIC AND BLOCK DIAGRAMS BASIC LOGIC SYMBOLS Distinctive - Shape Symbols Output is active when input is active. SCHMITT TRIGGER AND FUNCTION OR FUNCTION EXCLUSIVE - OR FUNCTION WIRED AND FUNCTION WIRED OR FUNCTION Output changes abruptly as a fixed DC level is crossed by the input signal.
SERVICE MODEL 8559A SYMBOLS USED IN SCHEMATIC AND BLOCK DIAGRAMS BASIC LOGIC SYMBOLS Indicator Symbols (positive logic assumed) R EDGE - TRIGGERED (dynamic) inputs are indicated by the presence of the dynamic input symbol. Input is active only on the positive - going transition.
MODEL 8559A SERVICE Nominal power levels, voltages, and waveforms shown on schematic diagrams were measured using the test setup shown below. Note that signal characteristics shown on schematic diagrams are pro - vided as a troubleshooting aid only. They should not be used for making instrument adjustments.
SERVICE MODEL 8559A PROCEDURE: Set HP 8559A Spectrum Analyzer controls as follows: TUNING ...................................................... .035 GHz FREQ SPAN/DIV ................................................. 1 MHz RESOLUTION BW .............
MODEL 8559A SERVICE THE HP 8559A SPECTRUM ANALYZER THEORY OF OPERATION General Information The HP 8559A is a wideband spectrum analyzer plug-in module for use with either the HP 180 series or HP 853A display mainframes.
SERVICE MODEL 8559A holes, in the aluminum block housing to filter the first IF. A fourth cavity is used as the resonant circuit for the second LO, which operates at one of two fixed frequencies. After mixing with the first IF, the second LO produces the second IF at 321.
MODEL 8559A SERVICE Regardless of which harmonic is used for mixing, image frequencies can create problems. Image frequencies occur when a signal not in the band being viewed mixes with the LO to produce a response. It is possible to be in the 1 - band and have a signal at 5 GHz produce a response at 2 GHz; the opposite can occur in the 1 + band.
MODEL 8559A TROUBLESHOOTING HINTS Begin troubleshooting by measuring the mainframe - supplied voltages as close to the HP 8559A as possible. The Vertical Driver/Blanking Assembly A15 offers three test points (A15TP6, A15TP7, A15TP8) to make the measurements.
MODEL 8559A SERVICE DPM Accuracy The following is a guide to troubleshooting poor DPM accuracy. Further information is included following the circuit descriptions of the indicated assemblies. Check + 14.5V supply on the Frequency Control Assembly A7 (A7TP3).
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MODEL 8559A SERVICE DIGITAL PANEL METER ASSEMBLY Al, CIRCUIT DESCRIPTION The Digital Panel Meter (DPM) Assembly AlAl/AlA2 is a dc voltmeter that measures a tuning voltage from Marker Assembly A8, and converts it to a front - panel frequency readout.
SERVICE MODEL 8559A Display Interface (E) During the period the DPM drive input is being converted, the BCD output circuitry in U3 is shut off. Once the conversion in U2 and U3 is complete, the four-line BCD is sent to U4 where it is converted to a seven-line (segment) drive.
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SERVICE MODEL 8559A TABLE 81. DIGITAL PANEL METER ASSEMBLY Al, REPLACEABLE PARTS (2 OF 2) Reference Designation HP Part Number Description CI1NNFClOR TI1 l llNT PIN 015 IN DX '97 59 DIODT-ZNR IN1129 6 2V 5% D:l 7 PD= 2'0d DIODi ZNR 1N534PII 6 IJV 52 PD=5W Tr=i.
MODEL 8559A SERVICE A1 A2 DPM DRIVER ASSEMBLY A1 A1 DPM DISPLAY ASSEMBLY DPM INPUT SIGNAL (This test point is located on the trace side of the circuit board.
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SERVICE FRONT SWITCH ASSEMBLY A2, CIRCU!T DESCRIPTION Functions of the switches and potentiometers on the Front Switch Assembly A2 are covered in the circuit descriptions for the electronic assemblies they control.
SERVICE MODEL 8559A FRONT SWITCH ASSEMBLY A2 DISASSEMBLY AND REPAIR REMOVAL OF FRONT SWITCH ASSEMBLY FROM HP 8559A CHASSIS Turn HP 8559A upside down on a flat work surface. NOTE Numbers in parentheses match the numerical callouts on Figure 8 - 10 Front Switch Assembly (exploded view).
MODEL 8559A SERVICE 14. Disconnect 10-conductor ribbon cable connected to DPM Driver Assembly AlA2. Remove screw holding DPM Display Assembly AlAl to diecast. DPM window will fall out. 15. Use a 5/16-inch nut driver to remove the two nuts attaching front panel to Front Switch Diecast (1).
SERVICE NOTE MODEL 8559A Rear Drive Hub (15) on Bandwidth Shaft (55) is preset flush with collar on shaft (see Figure 8 - 7B). Do not remove drive hub unless necessary for repair. e. Use a no. 4 hex wrench to loosen the two screws on Coupling Hub (54) attached to Frequency Span Shaft (9), and remove hub from shaft.
MODEL 8559A SERVICE Misapplied grease might cause intermittent switch connections. Utmost care must be taken during reassembly to avoid excessive application of grease and contamination of switch contacts. Avoid getting grease on fingers. ASSEMBLY OF FRONT SWITCH ASSEMBLY 1.
SERVICE MODEL 8559A i. Inspect Attenuator Drive Rotor (8). Roll Pins (12) should be positioned in hole 1 and hole 9, as shown in Figure 8-8D. j. Inspect front Anticrush Drive Hub Assembly (7). Note that pin is offset to one side of drive hub; place drive hub over right-most bushing in Front Switch Diecast (I) with this side down (i.
MODEL 8559A SERVICE i. Use a no. 4 hex wrench to temporarily install SWEEP TRIGGER, SWEEP TIME/DIV, MANUAL SWEEP, and FREQ SPAN/DIV knobs. j. Tighten Stud (53) and left-most Screw (48) attaching Front Switch Board Assembly to Front Switch Diecast (1).
SERVICE MODEL 8559A k. Pull and turn FREQ SPAN/DIV Knob until a set screw is visible on Coupling Hub (54). Push FREQ SPAN/DIV knob in and out to align pin on Coupling Hub with slots in Bandwidth Rotor (56). With FREQ SPAN/DIV knob pushed in and Coupling Hub flush again Bandwidth Rotor (pin aligned), tighten set screw using a no.
MODEL 8559A SERVICE k. Use a no. 4 hex wrench to firmly tighten both set screws in front Anticrush Drive Hub (7). Recheck Ref Level Shaft (6) as in step j, and readjust front Anticrush Drive Hub as necessary. 1. Slip Miter Gear (51) over Attenuator Shaft Assembly (18).
SERVICE MODEL 8559A 8. Installation of Knobs: a. Turn SWEEP TRIGGER Shaft (24) fully clockwise (as seen from front of Front Switch Assembly) to spring - loaded SINGLE position and release. Use a no. 4 hex wrench to install SWEEP TRIGGER knob with SINGLE line aligned with painted arrow on front panel.
MODEL 8559A SERVICE INSTALLATION OF FRONT SWITCH ASSEMBLY INTO HP 8559A CHASSIS 9. Set Front Switch Assembly into place in chassis, being careful not to bend semi - rigid cables or pinch wires or ribbon cables. Attach Front Switch Diecast (1) to left and right side gussets with four screws.
SERVICE MODEL B559A FACTORY PRESET SHAFT ASSEMBLIES REF LEVEL SHAFT BANDWIDTH SHAFT C FREQUENCY SPAN SHAFT NOTE Arrows point toward rear of HP 8559A FIGURE 8-7.
MODEL 8559A SERVICE A SWEEP TRIGGER ROTOR HOLE #I7 C FREQ SPANIDIV ROTOR E RESOLUTION BW ROTOR B SWEEP TIMEIDIV ROTOR HOLE #1 D ATTENUATOR DRIVE ROTOR HOLE #I HOLE #9 ' F REF LEVEL ROTOR FIGURE 8-8.
SERVICE MODEL 8559A FIGURE 8.9. MACHINED PARTS.
MODEL 6559A SERVICE Reference Designation TABLE 8-2. FRONT SWITCHBOARD ASSEMBLY A2A1, REPLACEABLE PARTS HP Part Number Description Mfr Part Number 1:4.
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MODEL 8559A ------ A2A1 W1 -- -- - L16 MOTHERBOARD 1 RIBBON CABLE ASSEMBLY OpM 1 A2A1W1 FANOUT RIBBON CABLE ASSEMBLY lWlPl .% I (CIRCUITSlDQof A1A2 DPM DRIVER PC BOARD. .Lac. 10 1 A2AlWlP2 AlAPJl ."ow* A2AlWlP3 A2AlJ3 I I. A2AlJ3 PlNS ARE SHOWN AS SEEN FROM TOP OF A2AlJ3 (FRONT OF REAR SWITCH BOARD ASSEMBLY).
SERVICE MODEL 8559A A2A1 W2 RIBBON CABLE ASSEMBLY -- - '10 A16 MOTHERBOARD P/O A2 FRONT SWITCH ASSEMBLY Pl RlbBMI OWL A21112 r-- PIN ARRANGEMENT SHOWN FOR A16J2 IS AS SEEN FROM TOP (COMPONENT SIDE) OF MOTHERBOARD. A2AlW2P2 PLUGS DIRECTLY INTO AND IS SOLDEREDTO PC BOARD PLATED - THRU HOLES, COLLECTIVELY DESIGNATED A2AlJ2.
MODEL 8559A SERVICE ASSEMBLY NUMBERS REFER TO SCHEMATICS WHERE DIAGRAM OF INDICATED SWITCH OR CONTROL IS LOCATED. DIAGRAMS OF ALL SWITCHES AND CONTROLS ARE ALSO LOCATED ON THE A2 FRONT PANEL SWITCH ASSEMBLY SCHEMATIC.
SERVICE - - - 8-46 MNEMONIC ALT IF BL CLIP BW1 BW2 BW3 BW4 BW5 C TUNE EXPAND FlNE TUNE FREQ ZERO FS 1 FS2 FS3 FS4 FS5 FS6 FS7 FS8 FS9 GAlN H2 H 3 lFGl IFG2 IFG3 I FG4 IFG5 IFG6 LlNE TRlG LOGILIN MAN S.
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MODEL 8559A SERVICE RF SECTION CIRCUIT DESCRIPTIONS List of parts included in RF Section. INPUT ATTENUATOR ASSEMBLY A3, CIRCUIT DESCRIPTION The HP 8559A Input Attenuator Assembly A3 is a 50 ohm, precision, coaxial step attenuator.
SERVICE MODEL 8559A FIRST MIXER ASSEMBLY A4, TROUBLESHOOTING Typically, a bad first mixer results in at least a 15 to 20 dB loss in sensitivity (i.e., the amplitude of displayed signals is 15 to 20 dB low). There are, however, other factors that can affect spectrum analyzer sensitivity that should be checked.
MODEL 8559A SERVICE SECOND CONVERTER ASSEMBLY A5, CIRCUIT DESCRIPTION The IF from the First Mixer Assembly A4 is coupled into the Second Converter Assembly A5 bandpass filter through coupling loop L3. Three circular, slug - tuned cavity resonators, operating as an inductive transmission line, make up the bandpass filter.
MODEL 8559A YIG-TUNED OSCILLATOR ASSEMBLY A6, CIRCUIT DESCRIPTION The YIG - Tuned Oscillator Assembly A6 consists of three parts: a sealed magnet assembly that encloses the YIG sphere and oscillator; .
MODEL 8559A TABLE 8-3. RF SECTION, REPLACEABLE PARTS SERVICE Reference Desianation HP Part Number Description SECOND CONVERTER ASSEMBLY (Does not mclude A5A: RCCOND COVI'RTCR IJSCll l ATlll? A66r.
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MODEL 8559A SERVICE Number 86290 - 60005 Description Connector Assy (Type N) Body: RF Connector (Type N) Contact: RF Connector (Type N) Insulator Center Conductor Body: Bulkhead Washer: Lock 0.439 " ID Nut: Hex 7/16 - 28 Insulator Mfr. Code 28480 02660 02660 28480 28480 28480 OOOOJ OOOOJ 28480 Mfr.
SERVICE MODEL 8559A FIGURE 8-17, INPUT ATTENUATOR ASSEMBLY A3 FIGURE 8 - 18. 3 dB ATTENUATOR ASSEMBLY.
MODEL 8559A SERVICE - - FIGURE 8-19, FIRST MIXER ASSEMBLY A4 FIGURE8-20. 4.8GHz LOWPASS FILTER ASSEMBLY FL1.
SERVICE MODEL 8559A OSCILLATOR HOUSING POS NEG 2ND LO BIAS BIAS COVER MP1 L4 L 5 2ND CONV OUT 52 TUNING SLUG 24 FL4 FL3 J3 COUPLING POST MP4 2N D SECOND CONVERTER MIXER MATCH 2ND LO OSCILLATOR ASSEMBL.
MODEL 8559A SERVICE 2ND CONVERTER VA R INPUT Jl (UNDERNEATH) FLl CR2 INPUT COUPLING LOOP L3 CAVITY B L OCK MP2 VARFL~ c k3 A5A2 SECOND CONVERTER FILTER ASSEMBLY P VARACTO R 1 V TO 28V FIGURE 8-21, SEC.
SERVICE MODEL 8559A YTO SHIELD COVER 7100 - 1273 YIG ASSEMBLY INSULATOR YIG - TUNED OSCILLATOR ASSEMBLY A6 08559 - 00041 5086 - 7329 ( LOCATED O N SIDE O F CAN ) SPACER PLATE WITH HEAT SINK COMPOUND YTO SHIELD CAN 08559 - 00039 7100 - 1272 LOCATED ON INSIDE OF CAN) FIGURE 8 - 22.
MODEL 8559A SERVICE - - - -- INPUT ATTENUATOR 7 1 86240-60022 I A~~RST~ I MI XER 1 FLI 4.lOHa LOWPASS f ILTER r - - - -I -0-0 A6 YIG TUNED YFM- I OW0 I 3-8 ella ria d8* FIGURE 8-23, RF SECTION, BLOCK .
SERVICE MODEL 8559A (08565 - 60090) YIG - TUNED OSCILLATOR FIRST MIXER 3 dB ATTENUATOR ASSEMBLY A6 ASSEMBLY AT1 R E A R Y I G S E C O N D C O N V E R T E R F R O N T Y I G MIXER A16W2 MOUNTING BRACKET ASSEMBLY A5 MOUNTING BRACKET SUPPORT BRACKET (08559 - 60061) (08559 - 00036) (08559 - 00035) (08559 - 00013) FIGURE &24.
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MODEL 8559A SERVICE FREQUENCY CONTROL ASSEMBLY A7, CIRCUIT DESCRIPTION The Frequency Control Assembly A7 drives the YIG-Tuned Oscillator Assembly A6 and provides the regulated + 14.5V and - 10V supplies to the First Mixer Assembly A4, the Second Converter Assembly AS, and the Marker Assembly A8.
SERVICE MODEL 8559A Resistor R92 is an adjustable current limiter that makes possible sweep width adjustment by changing the gain of the stage. Delay compensation for FM coil swept spans is provided by U14, C14, R96*, and potentiometer R83, the delay compensation adjustment.
MODEL 8559A SERVICE RESIDUAL FM TROUBLESHOOTING FLOWCHART ANNOTATION In the next steps, edge connector contacts on the circuit board are taped over to isolate portions of the circuit.
SERVICE MODEL 8559A Observe 1st L.O. Isolate YTO Main Coil Tune Driver Isolate YTO FM Source of FM Replace Tune YES Coil Driver is YTO FM Voltage with Coil Driver 0 I0 Source of FM Source of FM is 1s .
MODEL 8559A SERVICE If the residual FM is unchanged, assume that the YTO Main Coil Fixed Driver is not its source. Retune the HP 8559A to minimum, .010 GHz. Isolate the YTO Main Coil Filter from the circuit by mounting the Frequency Control Assembly A7 on an extender board and taping over PI-19, PI-20, P1 - 25, while short - ing PI-2 to PI-19.
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MODEL 8559A SERVICE TABLE 8-4. FREQUENCY CONTROL ASSEMBLY A7, REPLACEABLE PARTS (3 OF 3) Reference I Designation HP Part Number Description I'I~NNI crnra rim rosr P I N 1, IHM FCC !;i sn I CNN~ rlw. ,,r,I [r,uNr rBIN I .I 4 nn m: 57 !.u CCINNCI:TO11 -Sf;! C:rliUT PTN 1 .
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MODEL 8559A SERVICE ALTERNATE IF DRIVERS TUNE/FULL SPAN VOLTAGE COARSE TUNE YTO MAIN COIL ORIVER SUMMING DRIVER tsv - > I - ! FS6 YOR - I YTO FW COIL DRIVER ' -1OV - VOLTAGE 1 TUNE REF ' REGULATOR tj4.
SERVICE MODEL 8559A A7 FREQUENCY CONTROL ASSEMBLY SwP h TUNE * GND &- YTO FIGURE 8 - 28. FREQUENCY CONTROL ASSEMBLY A7, COMPONENT LOCATIONS.
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MODEL 8559A SERVICE MARKER ASSEMBLY A8, CIRCUIT DESCRIPTION The Marker Assembly A8 comprises the Marker Generator, the DPM and Second LO Drivers, the ALT IF and SIG IDENT circuits, the Auto Scan Time Drivers, and the Scan Attenuators. Marker Generator (F) The Marker Generator is basically a zero voltage detector.
SERVICE MODEL 8559A Second LO Driver (E) The Second LO Driver varies the voltage applied to the varactors in the second LO cavity (A5CR2 and A5CR3). The upper limit of this voltage is dependent on the second LO sensitivity and varies during operation from about I V to between 7V and 30V.
MODEL 8559A SERVICE Auto Scan Time (AST) Accuracy: Observe front panel switch positions to isolate the problem area. Auto scan time can also be affected by circuits on the Sweep Generator/Bandwidth Control Assembly A9 and the VIDEO FILTER control position.
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MODEL 8559A SERVICE Reference Designation HP Part Number TABLE 8 - 5. MARKER ASSEMBLY A8, REPLACEABLE PARTS (3 OF 3) Description Mfr Code Mfr Part Number.
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MODEL 8559A SERVICE -- 0. SCAN ATTENUATOR > , I FSB - I ATTEN I ) SWEEP LOQIC CONTROLLED YTO SYP I > I I I TIME DRIVERS AST I ,.ma Inmu) LLlL L H3 I 1, . LOOIC / VIDEO H2 INPUT m SYIFT LL r - MARK=" VIOEO SHIFT GENERATO DPM FREO ZERO SECOND LOY DRIVER PM - ALT IF ALT IF SIG ID SIG I0 VAR > RETRACE RETRACE I -- FIGURE 8-31.
SERVICE MODEL 8559A A8 MARKER ASSEMBLY FIGURE 6-32. MARKER ASSEMBLY A8, COMPONENT LOCATIONS b92.
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MODEL 8559A SERVICE SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, CIRCUIT DESCRIPTION The Sweep Generator/Bandwidth Control Assembly A9 consists of the sweep generator circuit, the sweep trigger circuits, the resolution bandwidth control circuits, the video filtering circuits, the sweep attenuator circuit, and the sweep offset circuit.
SERVICE MODEL 8559A AMPL l F l ER = t1OV RETRACE = +0.5V SWEEP FIGURE 8 - 34. SIMPLIFIED SCHEMATIC OF SWEEP GENERATOR IN AUTO MODE With CR2 off, the current source begins charging the timing capacitor (C3 and C4, block I). As the timing capacitor charges, the output of the buffer amplifier increases linearly.
MODEL 8559A SERVICE SW l TCH I @SWEEP DEAD TIME SWITCH 7&6 I I FIGURE 8 - 35. SIMPLIFIED SCHEMATIC OF FASTISLOW SWEEP TIME OPERATION FastlSlow Sweep Time Operation Timing capacitors C3 and C4 provide fast and slow sweep operation (refer to Figure 8-35).
SERVICE MODEL 8559A Pulse Shaper (M) The pulse shaper circuit (block M) consists of an FET switch, a Schmitt trigger, a differentiator, and an emitter - - follower (see Figure 8-36).
MODEL 8559A SERVICE to the Pulse Shaper. Resistor A16R2 and capacitor A16C8 on the motherboard attenuate the ac line signal to approximately 1V peak-to-peak (at the base of 435) and filter line spikes. Single Sweep Triggering and Abort When the TRIGGER switch is in the single sweep position, the sync line is grounded and the single line open.
SERVICE MODEL 8559A switch that connects R34 to the comparator. Turning the manual sweep control (A2R4) adjusts the voltage at the control side of R34. Operational amplifier U 1, operating in a linear mode, fixes the voltage at pin 2 by feedback through CR2, the buffer amplifier, and R29.
MODEL 8559A SERVICE Crystal filter bandwidth is determined by the current on BW6. Transistor 413 in the Xtal PIN Driver Buffer (block D) is turned off, allowing 414 to establish the bandwidth control current.
SERVICE MODEL 8559A Video Filter The video filter comprises control A2R6, RESOLUTION BW switch A2AlS5, and eight capacitors on the Sweep Generator/Bandwidth Control Assembly A9 (blocks A and B). VIDEO FILTER control A2R6 varies the resistance of the RC filtering network that it forms with the video filter capacitor.
MODEL 8559A SERVICE SWEEP GENERATOWBANDWIDTH CONTROL ASSEMBLY A9, TROUBLESHOOTING When making measurements at or near test points, be careful not to short adjacent points or circuit components together. Auto Scan Time (AST) Accuracy: Observe front panel switch positions to help isolate the problem area.
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MODEL 8559A SERVICE TABLE 8-6. SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, REPLACEABLE PARTS (1 OF 4) Reference Designation HP Part Number Description CAPACITCW F XD 1:IOi'F r- 19% 1K'JI)c CER I:APACI TOR -Frn I cr'F + -2% :~cnvnc ri P o I -60 CAPACITOR - FXD .
SERVICE TABLE 8-6. SWEEPGENERATORIBANDWIDTH CONTROL ASSEMBLY A9, REPLACEABLE PARTS (2 OF 4) MODEL 8559A Reference Designation HP Part Number Description lI<ANSTP,TllR PNP ST PD=lOOkW Fr=-l!79V,ll7 .
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SERVICE MODEL 8559A Reference Desianation TABLE 6-6. SWEEP GENERATORIBANDWIDTH CONTROL ASSEMBLY A9, REPLACEABLE PARTS (4 OF 4) HP Part Number Description I:ISNNI-CTOB -SGI. cnsr P rN I . i 4 nn -rm sr sn I;IINNFCTI,R- SLI. r,rlNT PIN 1 . 14 -flH- KC 52 !',Q CONNECTOR SSI CrlNl PIN 1 .
MODEL 8559A SERVICE -0 -0 -- ESWEEP OENERATORIBANDWI DTH CONTROL - - I I MAN SCAN d?? FAST/SLOW SWEEP I CAPACITORS ATTEN SWP I) VIDEO FILTER 1 6' I TRIQ LINE/VIDEO SINBLE >BY1 1 # I r' PIN DRIVERS - I- - I I - -$, I VERT I ' > I-- $ 00 0- -- _I FIGURE 838.
SERVICE MODEL 8559A 0 ADJ Q "L ADJ @ +lOV ADJ ' @ 1MS ADJ ' @ 5 MS' ADJ A9 SWEEP GENERATOR/BANDWIDTH CONTROL ASSEMBLY FIGURE 8 - 39.
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MODEL 8559A SERVICE THIRD CONVERTER ASSEMBLY A10, CIRCUIT DESCRIPTION The Third Converter Assembly A10 contains a 321.4 MHz amplifier followed by a 321.4 MHz bandpass filter, a double balanced mixer, a 21.4 MHz IF preamplifier, a flatness compensation amplifier, and a band conversion loss compensating amplifier.
SERVICE MODEL 8559A IF Preamplifier (F) The IF Preamplifier voltage gain is provided by Q8 in a common - emitter amplifier configuration. Circuit gain is controlled with collector - to - base feedback through PIN diode CR4.
MODEL 8559A SERVICE 35 MHz Calibration Oscillator (B) The 35 MHz Calibration Oscillator consists of a differential amplifier formed by Qll and 412. A frequency determining tank circuit (L21, C45, and C46) is connected to the base of Q11. The base of 412 and one side of the tank are at RF ground due to C48.
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MODEL 8559A TABLE 8-7. THIRD CONVERTER ASSEMBLY A10, REPLACEABLE PARTS (1 OF 3) SERVICE Reference Designation A1 0 h10L1 41 lr,' A1 0C3 A1 11 4 A l OC5 AI Or61 41 IlC7 AI nrc A1 OC9 A1 lri 3 AIPCll ni lnr 1 .
SERVICE MODEL 8559A TABLE 8-7. THIRD CONVERTER ASSEMBLY A10, REPLACEABLE PARTS (2 OF3) Reference Designation Al OL6 A1 '11 7 A I llL8 A1 ll 9 Al OLIO A11111 A1 CLIP A1 ll 1 i A10L14 A10I l',.
MODEL 8559A TABLE 8 - 7. THIRD CONVERTER ASSEMBLY A10, REPLACEABLE PARTS (3 OF 3) Reference Designation AIOI<3b A1 CN?,'? A1 OR30 A1 3R79 A1 OR40 nl Jnzl A1 OR42 At 0R4 1 A L OR44 A1 3R4'.
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MODEL 8559A SERVICE FLATNESS COMPENSATION AMPLIFIER NON - LINEAR I FIGURE 842. THIRD CONVERTER ASSEMBLY A10, BLOCK DIAGRAM.
SERVICE MODEL 8559A AlOWl 321.4 MHz IF IN @ 321.4 MHz BPF ADJUST 300 MHz LO OUT (TEST CONNECTOR) 0 L12 LO ADJ A1 0 THIRD CONVERTER ASSEMBLY Q ' C46 CAL FRED FIGURE 6-43.
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MODEL 8559A SERVICE BANDWIDTH FILTERS No. 1 and No. 2 ASSEMBLIES All and A13, CIRCUIT DESCRIPTION Bandwidth Filters No. 1 and No. 2 Assemblies All and A13 are identical except for some off - board connec - tions. Bandwidth Filter No. 1 Assembly A1 1 is described here.
SERVICE MODEL 8559A emitter is fixed by R8. The collector, therefore, becomes a constant - current sink for 20 rnA of current supplied by Q1 and 43. A decrease in the current supplied by 43 results in increased current through Q1, keeping the current through 42 constant.
MODEL 8559A SERVICE When the 1 kHz bandwidth is selected, CR4 is biased on and has a resistance of about 60 ohms. This resistance forms a voltage divider with R, that results in signal amplitude loss across the crystal. Increased gain in the input buffer amplifier, caused by the load on 43, compensates for these losses.
SERVICE MODEL 8559A The case capacitance of the crystal (C,) would cause a second resonant point, or dip, in the bandpass if compensation were not used to nullify its effects. Compensation is provided by 44 as a current equal to and opposite in phase with the current flowing through C,, as shown in Figure 8-51.
MODEL 8559A SERVICE FIGURE8-52. LC POLE MODEL A simplified schematic of the first LC pole is shown in Figure 8 - 53. The fundamental frequency-determining components are L6 and the center - tapped capacitance C16* and C20*. Positive feedback is applied to the center- tap at 21.
SERVICE Second Xtal Pole (G) The operation of the Second Xtal Pole is identical with the First Xtal Pole. MODEL 8559A Second LC Pole (F) Operation of the Second LC Pole is the same as the First LC Pole, except that R56* performs the same function as PIN diode CR5.
MODEL 8559A TABLE 88. BANDWIDTH FILTER NO. 1 ASSEMBLY All. REPLACEABLE PARTS (1 OF 3) SERVICE Reference Designation All C27 A1 lC28 ~11rz9 A1 lC30 hl lC3l - - HP Part Number Description CAPACITOR -FXD ?;'OPT t - 5% 30OVDC M[CA CAPACITCIR f XD 1:'PF t 52 5DJVCC ILR CAPACITOR -V TRMR -CCR 5.
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MODEL 8559A TABLE 8 - 8. BANDWIDTH FILTER NO. 1 ASSEMBLY All, REPLACEABLE PARTS (3 OF 3) SERVICE Reference Designation HP Part Number Description RT'il'ilnR 511 1% .
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MODEL 8559A I I BY6 BY5 [POLE SELECTION1 I BY8 [CRYSTAL BANOYIOTH CONTROL) BY7 [LC BANOYIOTH CONTROL) - - -- -- J FIGURE 8-54. BANDWIDTH FILTER NO. 1 ASSEMBLY A1 1, BLOCK DIAGRAM.
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MODEL 8559A SERVICE STEP GAIN ASSEMBLY A12, CIRCUIT DESCRIPTION The Step Gain Assembly A12 provides from 0 to 50 dB amplification of the 21.4 MHz IF in 10 dB steps, as selected from the REFERENCE LEVEL control. A zero to - 12 dB REFERENCE LEVEL FINE attenuator control is also included on the front panel.
SERVICE MODEL8559A The maximum current flow through the PIN diode is set with the 0 dB potentiometer R35. Resistor R35 is adjusted to the 12.3 dB attenuation point with the REFERENCE LEVEL FINE control set fully counterclock - wise (0 position). Transistors Q5 and 47 are identical current sources.
MODEL 8559A SERVICE Band Offset (D) Operational amplifiers U4a, U4d, U4c, and their associated circuits provide offset and gain for the tilt voltage. Potentiometers R57, R58, R59, R60, R61, and R62 are used to adjust the offset of each band. A fixed negative offset is provided for all bands by operational amplifier U4c.
SERVICE MODEL 8559A + 5.1 V Reference (K) Transistor 44 and its associated circuitry operate off the + 15V supply to furnish a regulated + 5.1V reference for the flatness and mixer diode bias circuit. Power Supplies (J) Extensive filtering of the + 15V, + 12V, and - 12.
MODEL 8559A TABLE 8 - 10. SERVICE STEP GAIN ASSEMBLY A12, REPLACEABLE PARTS (1 OF3) Reference Designation HP Part Number Description CAPACITOR FXD r C:'C~ITI R FAD CAPATTTOR rxD CAPATSTOR FXD rr,r1r,r1 ir,R f $1) OIIJF ~nn 202 ionucr: I~R Cllll- I30 ?CX ICCL'DC I:I I.
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MODEL 8559A SERVICE A12 STEP GAIN 0 - 12 dB CONTROL REF LEVEL WP 1 REF LEVEL CY 2ND 10 dB 20 dB 20 dB AMPLIFIER AMPLIFIER AMPLIFIER I 21.4 MHz ( IF61 IF62 I St1 FLATNESS BAND MIXER DIODE BIAS .Ol-s 6-g r H2 BAND SELECT ::is DIODE BIAS DECODER ,' - 12.
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MODEL 8559A BANDWIDTH FILTER No. 2 ASSEMBLY A13 SERVICE Bandwidth Filter No. 2 Assembly A13 is very similar to Bandwidth Filter No. 1 Assembly A1 1, and correspond - ing components have the same reference designators. The differences between the two assemblies are in the TO/ FROM designations listed on the schematic diagrams.
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SERVICE MODEL 8559A TABLE 8 - 11. BANDWIDTH FILTER NO. 2 ASSEMBLY A13, REPLACEABLE PARTS (2 OF 3) Reference I Designation HP Part Number Description DtODr SWrTCHINC ?0V 7594 1CN'i DlllDl' PJN 113V TI?AN!:lSTOR PNP 2NI?251 ST TO 18 PD :3hOMIJ RCSISTOR 100 1% ,125W F 1I:::OI - 100 RES1:;TCIR 6.
n 0 ' LnP - rJ 0 POP N 0 0 00- NI I -CIS . nn r- n c omm (i'ocr i-LCG < - LC - Gj99< GJCGS C99GG 24999 Gogri ooeoo conoO 0 0 on GOO *-*c* u-C-u U~CCP ouuco PU~CO *PUPU ~eum~ oc~ma momma o a Em 9mm "7-i-2~: " ..-..2-, -- 2~3bl~32 JCCS-: b?k3~:-3&3 ~ECSL ~c~en uru-P TPTPC P *P he* qi.
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MODEL 8559A SERVICE FIRST CRYSTAL POLE SECONO CRYSTAL POLE I I BY5 (POLE SELECTION) BY6 BY6 (CRYSTAL BANOYIOTH CONTROL) I BY7 (LC BANOYIOTH CONTROL] 00 -9 90 -.
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MODEL 8559A SERVICE LOG AMPLIFIER ASSEMBLY A14, CIRCUIT DESCRIPTION The Log Amplifier Assembly A14 includes seven amplifier stages, each capable of providing linear and loga- rithmic amplification. A detector circuit following the amplifier stages detect.
SERVICE MODEL 8559A Resistance R, is at a minimum (approximately 150 ohms) for small signals. The small signal gain of the stage (about 10 dB) is established by the dc bias through the log diodes. As the signal level at the emitter of 413 increases, signal current cancels bias current in the log diodes, increasing R,.
MODEL 8559A SERVICE / SECOND STAGE i1iV i1lV -1OdB ADJUST A- - C FEEDBACK PITH 1, . LOG/LIN L I N E -BVT .Jk-@$ Q24 FIGURE &66.10dB GAIN OPERATION IN LINEAR MODE, SIMPLIFIED SCHEMATIC collector of 424 goes to - 8 VT, turning the log diodes on.
SERVICE MODEL 8559A Buffer Amplifier (L) The detector's output, the video signal, is amplified by the Buffer Amplifier. Differential pair 421 and driver 422 approximate a noninverting operational.
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SERVICE MODEL 8559A TABLE 8-12. LOG AMPLIFIER ASSEMBLY A14, REPLACEABLE PARTS (4 OF 4) Reference Designation HP Part Number Description RFSIGTOR 2.37K 1% .125W F TC=O+-100 1FRHlIdAL TtST POINT PCB TFRMINAL TrqT POINT PCB TERMJNAI lFST POlNT PCB TCRMINAI.
MODEL 8559A SERVICE I LO6 MODE TEWPERATURE LO6 CONTROLLEO I I AMPLIFIER ATTENUATOR DETECTOR I I b BAIN CONTROL LINES IF65 IF65 1- IF68 IF68 ",6/LIN ) C POWER SUPPLY FIGURE 8-67.
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MODEL 8559A SERVICE VERTICAL DRlVlNGlBLANKlNG ASSEMBLY A15, CIRCUIT DESCRIPTION The Vertical Driving/Blanking Assembly A15 contains a preamplifier to amplify the detected and filtered video received from the Log Amplifier Assembly A14. It also supplies the video signal needed to trigger the sweep generator in the video trigger mode.
SERVICE MODEL 8559A Beamfinder With 1 dB per division selected, the baseline is off-screen. Without a visible signal present, there is no displayed trace. This condition could be misinterpreted as a display malfunction. On an HP 180 series mainframe, a visible trace can be produced by pressing the BEAMFINDER switch on the mainframe.
MODEL 8559A SERVICE Sweep Ramp HighlLow Limit Comparator (C) Operational amplifiers Ula and Ulb are connected to form a comparator circuit. A voltage divider, comprising resistors R6, R7, and R8, establishes a high voltage reference at Ula pin 2 and a low voltage reference at Ulb pin 5.
SERVICE MODEL 8559A output to the mainframe, 44 must receive a positive voltage. The Blanking Driver is driven by the Vertical/ Baseline Comparator and the Sweep Ramp High/Low Limit Comparator. Either of these circuits can produce the positive input needed by the Blanking Driver to produce a blanking output.
MODEL 8559A TABLE 8 - 13. VERTICAL DRlVERlBLANKlNG ASSEMBLY A15, REPLACEABLE PARTS (1 OF 2) Reference Designation HP Part Number Description I:I1NNI~CIOI? S!;l CIIXT PIN 1, IS MH rl ;!: !;I SQ I-I:IW:.
SERVICE TABLE 8 - 13. VERTICAL DRIVEFLUANKING ASSEMBLY A15, REPLACEABLE PARTS (2 OF 2) MODEL 8559A Reference Designation HP Part Number Description HCSJSTOR 100C 1% 125W r Tr-O+ 1CO RFSTr,lCiR 1.9fK 1% 125W F Tr=Di 100 CONNCCTOR-SGI CONT PIN 1.14 Mfi-RSC S7 SQ r,otwrCic,R SGL CONT PJN 1.
MODEL 8559A SERVICE 0- 0 0 A15 VERTICAL DRIVERIBLANKING r-- VERTICAL DRIVER -7 I VIDEO TRIG > PREANPLIFIER AUX VERT I I i VERT - GAIN > SWEEP RAMP HIGWLOY LIMIT COMPARATOR I VER? POSN BLANKING DRIVER PENLIFT VERT + > I DRIVER - I PENLIFT > SWEEP INDICATOR RETRACE DRIVER (r * I I SUP LEO > FIGURE 8-73.
SERVICE MODEL 8559A A15 VERTICAL DRIVERJBLANKING ASSEMBLY VERTICAL 53 DEFLECTION OUT & L L NORM J1 52 @ VERT (-1 VERT {+) I R 1 1 dB OFFSET 0 GND 54 /Y NORM FIGURE 8 - 74.
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MODEL 8559A TABLE 8-14. M O T H E R B O A R D ASSEM B LY A16, REPLACEABLE PARTS (1 OF 2) Reference Designation HP Part Number Description I:ONNL CTOR 40 PIN M RC 1:TANI'IIL AR TClNNTrlrIR 43 PlN .
SERVICE MODEL 8559A Reference Designation TABLE 814. MOTHERBOARD ASSEMBLY A16, REPLACEABLE PARTS (2 OF 2) HP Part Number Description Alb MISCFLL ANFnlJS FfcRTS CAN II TIC ,067--.6:?5 -DTA , C91 - WD NIL. CC!NNFClOR- SGL LnNT $KT . 9.32 JN IICC '.
MODEL 8559A SERVICE A1 6 MOTHERBOARD ASSEMBLY L r- I I r I 1 r ~' '-7 0 r' I I. I I -7 I I DIODE * / B I A S I - I I I I J2 I I J 1 I I I I I L -------------- J r--7 L --------- -----A LRlL Ff$ TP 1 8/ mm Q riil FIGURE 876.
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HEWLETT - PACKARD SALES AND SERVICE OFFICES To obtain servicing information or to order replacement parts, contact the nearest Hewlett- Packard Sales and Service Office listed in the HP Catalog, or contact the nearest regional office listed below : IN THE UNITED STATES CALIFORNIA 3939 Lankershim Boulevard North Hollywood 9 1 604 GEORGIA P.
デバイスHP (Hewlett-Packard) 8559Aの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
HP (Hewlett-Packard) 8559Aをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはHP (Hewlett-Packard) 8559Aの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。HP (Hewlett-Packard) 8559Aの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。HP (Hewlett-Packard) 8559Aで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
HP (Hewlett-Packard) 8559Aを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はHP (Hewlett-Packard) 8559Aの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、HP (Hewlett-Packard) 8559Aに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちHP (Hewlett-Packard) 8559Aデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
