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2. High-Voltage Adjustment (SN 3001A and Below)

This procedure is for IF-Display Sections with serial number prefixes
3001A and below. The procedure for serial prefixes 3004A and above
is located immediately after this procedure.

This procedure should be performed whenever the

High

Voltage Multiplier,

CRT, or

High Voltage Regulator

Assembly is repaired or replaced.

IF-Display Section:

Z-Axis Amplifier
High-Voltage Regulator

V Regulator

+ 100 V,

V Regulator

This procedure is intended for adjustment purposes only.

Voltages are present which, if contacted, could cause serious

personal injury. Approximately -4000 V dc can be present on

the

High Voltage assembly even when the ac line cord is

disconnected. Do not attempt to remove the

High-Voltage

Assembly from the instrument. Do not disconnect the CRT’s

post-accelerator cable; the CRT can hold a + 18

dc charge for

several days.

If for any reason the

High Voltage Assembly or the

postaccelerator cable must be removed, refer to “Discharge

Procedure for High Voltage and CRT” at the end of this

adjustment procedure.

A

divider probe is used to measure the CRT cathode voltage.

First, the high-voltage probe is calibrated by comparing measurements
of the + 100 V dc supply voltage with and without the probe. Any
measurement error due to the use of the high-voltage probe is
calculated into the adjustment specification of the CRT cathode
voltage, which is adjusted with the

HV ADJUST control. When

the CRT cathode voltage is properly adjusted, the CRT filament
voltage will be

f0.04 V rms measured with CRT beam at

cut-off, which is required for maximum CRT life. The filament voltage
is referenced to the high-voltage cathode and can only be measured
directly with special equipment.

Adjustments 3-3 1

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Summary of Contents for HP 8566B

Page 1: ...ble You will find any other available product information on the Agilent Test Measurement website www tm agilent com HP References in this Manual This manual may contain references to HP or Hewlett Packard Please note that Hewlett Packard s former test and measurement semiconductor products and chemical analysis businesses are now part of Agilent Technologies We have made no changes to this manual...

Page 2: ...Performance Tests and Adjustments Manual HP 8566B Spectrum Analyzer F a HEWLETT PACKARD HP Part No 08566 90168 Printed in USA September 1993 ...

Page 3: ...for a particular purpose Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Copyright Hewlett Packard Company 1993 All Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws 1400 Fount...

Page 4: ...r Buyer shall pay all shipping charges duties and taxes for products returned to Hewlett Packard from another country Hewlett Packard warrants that its software and firmware designated by Hewlett Packard for use with an instrument will execute its programming instructions when properly installed on that instrument Hewlett Packard does not warrant that the operation of the instrument or software or...

Page 5: ...rocedure that if not correctly performed or adhered to could result in damage to or destruction of the instrument Do not proceed beyond a caution sign until the indicated conditions are fully understood and met Warning Warning denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning note...

Page 6: ...sult in personal injury Warning There are many points in the instrument which can if contacted cause personal injury Be extremely careful Any adjustments or service procedures that require operation of the instrument with protective covers removed should be performed only by trained service personnel Caution Before this instrument is switched on make sure its primary power circuitry has been adapt...

Page 7: ...spectrum analyzer are manuals The Installation and Verification Manual the Operating and Programming Manual and the Performance Tests and Adjustments Manual HP part number 08566 90169 Contents General information installation specifications characteristics and operation verification HP part number 08566 90040 Contents Manual and remote operation including complete syntax and command description Ac...

Page 8: ...ise Level Test 15 Residual Responses Test 16 Harmonic and Intermodulation Distortion Test 17 Image Multiple and Out of Band Responses Test 18 Gain Compression Test 19 1st LO Output Amplitude Test 20 Sweep Tune Out Accuracy Test 21 Fast Sweep Time Accuracy Test 20 ms 22 Frequency Reference Error Test Iable 2 24 Performance Test Record Test 1 Center Frequency Readout Accuracy Test 2 Frequency Span A...

Page 9: ...and Below 3 Preliminary Display Adjustments SN 3004A and Above 4 Final Display Adjustments SN 3001A and Below 4 Final Display Adjustments SN 3004A and Above 5 Log Amplifier Adjustments 6 Video Processor Adjustments 7 3 MHz Bandwidth Filter Adjustments 8 21 4 MHz Bandwidth Filter Adjustments 9 3 dB Bandwidth Adjustments 10 Step Gain and 18 4 MHz Local Oscillator Adjustments 11 Down Up Converter Adj...

Page 10: ...ormance Test Record Test 4 6 dB Resolution Bandwidth Selectivity p o Table 2 24 Performance Test Record Test 4 Impulse and Resolution Bandwidth Selectivity p o Table 2 24 Performance Test Record Test 5 Impulse and Resolution Bandwidth Switching Uncertainty p o Ihble 2 24 Performace Test Record 9 6 dB Resolution Bandwidth Adjustments 9 Impulse Bandwidth Adjustments 4 l 4 2 4 4 4 10 4 13 4 16 4 18 4...

Page 11: ... Sidebands Test Setup 2 23 Noise Sidebands Measurement 2 24 Line Related Sidebands Test Setup 2 25 Line Related Sidebands Measurement 2 26 Average Noise Level Measurement 2 27 Residual Responses Measurement 2 28 Harmonic Distortion Test Setup 2 29 Intermodulation Distortion Test Setup 2 30 Third Order Intermodulation Products 2 31 Image Multiple and Out of Band Responses Test Setup 2 32 Gain Compr...

Page 12: ...p 3 36 Location of Video Processor Adjustments 3 37 3 MHz Bandwidth Filter Adjustments Setup 3 38 Location of Center Symmetry and 10 Hz Amplitude Adjustments 3 39 Location of 3 MHz Peak Adjustments 3 40 21 4 MHz Bandwidth Filter Adjustments Setup 3 41 Location of A4A4 21 4 MHz LC Filter Adjustments 3 42 Location of A4A4 21 4 MHz Crystal Filter Adjustments 3 43 Location of A4A8 21 4 MHz LC Filter a...

Page 13: ...nts 3 156 3 81 RF Module Phase Lock Adjustments Setup 3 161 3 82 Location of RF Module Phase Lock Adjustments 3 161 3 83 A Sampler Balance Adjustment Waveform 3 164 3 84 Cal Output Adjustment Setup 3 166 3 85 Location of CAL OUTPUT Adjustment 3 167 3 86 CAL OUTPUT Harmonics 3 168 3 87 Last Converter Adjustments Setup 3 170 3 88 Location of Last Converter Adjustments 3 171 3 89 Frequency Response P...

Page 14: ...dB Bandwidth Measurement 4 6 Bandwidth Switching Uncertainty Measurement 4 7 Location of Bandwidth Adjustments 4 8 Location of Bandwidth Adjustments 5 l Option 857 Amplitude Fidelity Test Setup 6 l RF Section Top View 6 2 RF Section Front View 6 3 RF Section Bottom View 6 4 IF Section Top View SN 3001A and Below 6 5 IF Section Ibp View SN 3004A and Above 6 6 IF Section Front View 6 7 IF Section Bo...

Page 15: ...oss Reference 3 2 Adjustable Components 3 3 Factory Selected Components 3 4 Standard Value Replacement Capacitors 3 5 Standard Value Replacement 0 125 Resistors 3 6 Standard Value Replacement 0 5 Resistors 3 5 Initial Adjustment Positions 3 6 Initial Adjustment Positions 3 7 Standard Values for A7A2L4 3 8 Limits for 100 MHz Harmonics 3 9 Selection Chart for Attenuator Resistors 3 10 Resistor Value...

Page 16: ...B Resolution Bandwidth Accuracy 4 4 6 dB Resolution Bandwidth Selectivity 4 5 Impulse and Resolution Bandwidth Selectivity 4 6 Bandwidth Switching Uncertainty 5 l Log Amplitude Fidelity 10 Hz RBW Option 857 5 2 Log Amplitude Fidelity 10 kHz RBW Option 857 5 3 Linear Amplitude Fidelity 3 219 4 3 4 9 4 9 4 12 4 15 4 17 5 4 5 5 5 5 Contents 9 ...

Page 17: ...cement of a part or component that affects electrical performance Warning The adjustment procedures require access to the interior of the instrument and therefore should only be performed by qualified service personnel There are voltages at many points in the instrument which can if contacted cause personal injury Be extremely careful Adjustments should be performed only by trained service personn...

Page 18: ...r repairs since it requires much less time and test equipment A description of the program can be found in the Installation and Verification manual Option 462 Option 462 instruments require that the performance tests and Instruments adjustment procedures listed below be performed instead of their standard versions included in chapters two and three Information on Option 462 versions is located in ...

Page 19: ... 100 kHz Leveling Internal External Power Meter Frequency 2 18 GHz Stability 5 x lo lo Frequency 200 Hz to 80 MHz Stability fl x IO day Amplitude Range 13 to 86 dBm with 0 01 dB resolution Attenuator Accuracy f0 07 dB 13 to 47 dBm Pulse Width 10 nsec to 250 nsec Rise and Fall Times 6 ns Output Level 2 5V Output Sine Wave and Triangle Wave BVp p Range 100 Hz to 500 kHz Sweep Function Available 2 re...

Page 20: ...nsition signals For use with HP 10020A Bandwidth 5 Hz to 500 MHz Input R lOO k62 Input C 3 pF Frequency 20 MHz to 400 MHz Sensitivity 30 dBm HP IB Compatible bnge lO MHz Xesolution 2 x 10Wg gate time Zxt Time Base 1 2 5 or 10 MHz equency dc to 100 MHz Time Interval A B 100 ns to 200s sensitivity 50 mV rms Eange 30 mV to 5V p p 1 Channel requency 100 MHz sensitivity 005V Division O 1 Divider compat...

Page 21: ...uracy f0 02dB Frequency Ol to 18 GHz Compatible with HP 436A Power Meter Frequency 50 MHz to 26 5 GHz Compatible with HP 436A Power Meter for Tektronix J 16 range 1 to 100 NITS cd m acceptance angle 8 spectral response CIE Photopic curve for Tektronix J 16 Por Tektronix J 16 3teps 10 dB from 0 to 120 dB requency 20 MHz to 1500 MHz 2alibrated to uncertainty error of t O 02 dB to 01 dB lO dB step at...

Page 22: ...tep at 20 MHz from 0 dB to 12 dB Frequency 200 Hz to 18 GHz SMA Connectors Frequency 200 Hz to 18 GHz SMA Connectors 2 required Impedance 5OQ BNC Impedance 500 SMA m I ype N Male Connector Frequency dc to 18 GHz mpedance 5061 kt off Frequency 250 MHz Rejection at 460 MHz 60 dB kt off Frequency 8 GHz iejection at 14 GHz 80 dB ht off Frequency 1200 MHz Xejection at 1500 MHz 50 dB I 20 volts O 2 ampe...

Page 23: ...equency 400 Hz Voltage lOO 120 220 or 240 V Power 6OOVA Frequency 1 MHz to 22 GHz Tracking 0 2 dB 10 MHz to 33 GHz Range 2 to 22 GHz Isolation 220 dB Required for preliminary display adjustment Optional Refer to Figure 3 108 Refer to Figure 3 109 4 required APC 3 5 m BNC 122 cm 48 in 3 required SMA m to SMA m BNC m to SMB Snap On f Recommended Model California Instr uments Model 153T Opt 400 HP 11...

Page 24: ...1250 l 158 X Adapter SMA m to SMA m 1250 1159 X Adapter BNC f to SMA m 1250 1200 X Adapter BNC f to SMB f 1250 1236 X Adapter Type N m to SMA f 1250 1250 X Adapter BNC to aligator clip 1250 1292 X Adapter Type N f to BNC m 1250 1477 X Adapter APC 3 5 m to Type N m 1250 1743 X Adapter Type N m to APC 3 5 f 1250 1744 X Adapter APC 3 5 f TO N f 2 required 1250 1745 X Adapter APC 3 5 f to APC 3 5 f 12...

Page 25: ... on 85680 60093 Adapter SMB snap on male to SMB snap on male 1250 0669 PC Board Display Adjustment Test 8 5 6 6 2 6 0 0 8 8 Extender Board 30 contacts 2 rows of 15 08505 60041 Extender Board 44 contacts 2 rows of 22 0 8 5 0 5 6 0 1 0 7 Extender Board 50 contacts 2 rows of 25 8 5 6 8 0 6 0 0 3 4 Extender Board 36 contacts 2 rows of 18 0 8 5 0 5 6 0 0 4 2 Figure l l Service Accessories HP Part Numbe...

Page 26: ...f specifications is required proceed as follows 1 Run the Operation Verification Program 2 The Operation Verification Program verifies compliance with specifications of all tests it performs The tests not performed by the Operation Verification Program must be done manually and are as follows n Sweep Time Accuracy including Fast Sweep Time Accuracy n Noise Sidebands n Harmonic and Intermodulation ...

Page 27: ...ands 12 Noise Sidebands Test Line Related Sidebands 13 Line Related Sidebands Test Noise Floor 14 Average Noise Level Test Residual Responses 15 Residual Responses Test Harmonic and Intermodulation Distortion 16 Harmonic and Intermodulation Distortion Test Image Multiple and Out of Band Responses 17 Image Multiple and Out of Band Responses Test Gain Compression 18 Gain Compression Test 1ST LO OUTP...

Page 28: ...am provides a detailed test record Record when a printer is used with the controller If manual performance tests are done the results of the performance tests may be tabulated on the HP 8566B Performance Test Record at the end of this chapter The HP 8566B Performance Test Record lists all of the tested specifications and the acceptable ranges for the measurement values obtained during the tests No...

Page 29: ...cy reference error X center frequency 10 Hz For spans n X 5 MHz f 2 of frequency span n X 100 kHz frequency reference error X center frequency n Center Frequency 1 100 Hz to 5 8 GHz 2 5 8 GHz to 12 5 GHz 3 12 5 GHz to 18 6 GHz 4 18 6 GHz n is the harmonic mixing number depending on center frequency SPECTRUM ANALYZER FAEOUENCY STANDARD Figure 2 l Center Frequency Test Setup 24 Performance Tests ...

Page 30: ...ccuracy within f 1 part in lOlo such as HP 5061A Adapter Type N m to SMA f 1250 1250 Adapter SMA f to SMA f 1250 1158 Cable Assembly SMA Male Connectors 5061 1086 1 2 3 4 5 6 7 8 Connect CAL OUTPUT to RF INPUT Press c KJ IRECALL Adjust FREQ ZERO for a maximum amplitude trace Press 2 j Set the synthesized sweeper for a 2 000000 GHz signal at a level of approximately 0 dBm Connect equipment as shown...

Page 31: ...t may fall outside of the specified limits if the internal frequency reference of the analyzer has not been calibrated within the past year To eliminate the frequency reference error X center frequency error the analyzer s 10 MHz Frequency Reference Output on the rear panel may be substituted for the frequency standard 2 6 Performance Tests ...

Page 32: ...GHz 1 MHz 15 GHz 10 MHz 15 GHz 100 MHz 15 GHz 1 GHz 15 GHz 10 GHz 15 GHz Center Frequency Readout 1Actual Min 1 999 98 GHz 1 999 7 GHz 1 998 GHz 1 98 GHz l IX 2 000 02 GHz 2 000 3 GHz 2 002 GHz 2 02 GHz 3 000 02 GHz 3 000 3 GHz 3 002 GHz 3 02 GHz 6 000 02 GHz 6 000 2 GHz 6 002 GHz 6 02 GHz 9 000 02 GHz 9 000 2 GHz 9 002 GHz 9 02 GHz 9 2 GHz 12 000 02 GHz 12 000 2 GHz 12 002 GHz 12 02 GHz 12 2 GHz ...

Page 33: ...onic mixing number depending on center frequency Description Spans less than 100 MHz are checked with a frequency synthesizer by comparing the displayed frequency span of two signals with their known span Wider spans are tested by tuning a synthesized sweeper from one edge of the analyzer display to the other and measuring the frequency change with a frequency counter FAEOUENCY SYNTHESIZER SPECTRU...

Page 34: ... SEARCH 8 Using the procedure of steps 5 6 and 7 measure the frequency separation of the indicated signals for each setting in fable 2 3 The MARKER A frequency should be within the limits given in the table Ihble 2 3 Narrow Span Accuracy Spectrum Analyzer Frequency Synthesizer MARKER A Frequency FREQUENCY SPAN Low High w m Min Actual Max 20 kHz 39 992 OOO 40 008 OOO 15 84 kHz 16 16 kHz 50 kHz 39 9...

Page 35: ...HZ 14 Set the synthesized sweeper to 3 8 MHz See fable 2 4 Press PEAK SEARCH 15 Press MARKER NORMAL and PEAK SEARCH 16 Press MARKER A and set the synthesized sweeper to 4 2 GHz See Table 2 4 Press CPEAK SEARCH 17 The MARKER A frequency should be between 388 MHz and 412 MHz 18 Set spectrum analyzer FREQUENCY SPAN and CENTER FREQUENCY according to Table 2 4 and measure the frequency span by the proc...

Page 36: ...MHz 14 800 15 200 388MHz 412 MHz 20GHz 500MHz 19 800 20 200 388MHz 412 MHz 4GHz 1 GHz 3 600 4 400 776MHz 824MHz 10GHz 1 GHz 9 600 10 400 776MHz 824 MHz 15GHz 1 GHz 14 600 15 400 776 MHz 824MHz 20GHz 1 GHz 19 600 20 400 776 MHz 824MHz 10GHz 5 GHz 8 000 12 000 3 88 GHz 4 12 GHz 15GHz 5 GHz 13 000 17 000 3 88 GHz 4 12 GHz 18GHz 5 GHz 16 000 20 000 3 88 GHz 4 12 GHz 10GHz 10 GHz 6 000 14 000 7 76 GHz ...

Page 37: ...FERENCE LEVEL 10 dBm Press SCALE LIN pushbutton Press SHIFT m resolution bandwidth for units in dBm Adjust REFERENCE LEVEL to position peak of signal trace at or just below reference level top graticule line Press SWEEP SINGLE Press MARKER NORMAL and place marker at peak of signal trace with DATA knob Press MARKER al and position movable marker 3 dB down from the stationary marker on the positive ...

Page 38: ...l between the limits shown in the table Ihble 2 5 Bandwidth Accuracy RESJ 3 MHz 1 MHz 300 kHz 100 kHz 30 kHz 10 kHz 3 kHz 1 kHz 300 Hz 100 Hz 30 Hz 10 Hz FREQUENCY SPAN 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 20 kHz 5 kHz 2 kHz 500 Hz 200 Hz 100 Hz 100 Hz MARKER A Readout of 3 dB Bandwidth 1 Min 2 400MHz 900 kHz 270 0 kHz 90 0 kHz 27 00 kHz 9 00 kHz 2 700 kHz 800 Hz 240 Hz 80 Hz 24 0 Hz 8 0 Hz Actual 3...

Page 39: ...e Test 3 RESOLUTION BANDWIDTH ACCURACY TEST must be performed before starting this test 1 Press 7ZiZj 2 Connect CAL OUTPUT to RF INPUT 3 Key in analyzer control settings as follows ENTER FREQUENCY FREQUENCY SPAN I VIDEO BW SWEEP Z j 100 MHz 20 MHz 3 MHz 100 Hz 4 Press MARKER j j and position marker at peak of signal trace Press MARKER ZJ and position movable marker 60 dB down from the stationary m...

Page 40: ...cord the value in lhble 2 6 8 Record the 3 dB bandwidths from Table 2 5 in Table 2 6 9 Calculate the bandwidth selectivity for each setting by dividing the 60 dB bandwidth by the 3 dB bandwidth The bandwidth ratios should be less than the maximum values shown in Table 2 6 10 The 60 dB bandwidth for the 10 Hz resolution bandwidth setting should be less than 100 Hz Figure 2 6 60 dB Bandwidth Measure...

Page 41: ... 100 Hz 30 Hz 10 Hz 20 MHz 15 MHz 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 10 kHz 5 kHz 2 kHz 500 Hz 100 HZ 100 Hz 300 Hz AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO Measured 60 dB Bandwidth Measured Bandwidth Maximum 3dB Selectivity Selectivity Ratia Bandwidth 60 dB BW 3dBBW 15 l 15 l 15 l 15 l 13 l 13 l 11 l 11 l 11 l 11 l 11 l 60 dB points separated by cl00 Hz 2 15 Performance Tests ...

Page 42: ...The CAL OUTPUT signal is applied to the input of the spectrum analyzer The deviation in peak amplitude of the signal trace is then measured as each resolution bandwidth filter is switched in Connect CAL OUTPUT to RF INPUT Key in the following control settings CENTER FREQUENCY 100 MHZ FREQUENCY SPAN 5 MHZ REFERENCE LEVEL 8 dBm t Q 1 MHz Press LOG ENTER da oh j and key in 1 dB Press MARKER PEAK SEAR...

Page 43: ...nty RES CFREQUENCY SPAN D e v i a t i o n Allowable MKR A Deviation Readout dB WV 1 MHz 5 MHz 0 ref 0 ref 3 MHz 5 MHz fl OO 300 kHz 5 MHz f0 50 100 kHz 500 kHz f0 50 30 kHz 500 kHz f0 50 10 kHz 50 kHz f0 50 3 kHz 50 kHz f0 50 1 kHz 10 kHz f0 50 300 Hz 1 kHz f0 50 100 Hz 1 kHz f0 50 30 Hz 200 Hz f0 80 10 Hz 100 Hz f2 00 2 18 Performance Tests ...

Page 44: ... SPAN 100 kHz REFERENCE LEVEL TiQ 8 dBm 30 kHz 3 Press LOG ENTER dB DIv and key in a log scale of 1 dB per division 4 5 Connect CAL OUTPUT to RF INPUT Press MARKER PEAK SEARCH and MKR REF LVL Record the marker amplitude upper right of display in Iable 2 8 6 Step up through the log scales with At each step press MARKER PEAK SEARCH then record the marker amplitude in Table 2 8 Refer to Figure 2 8 7 ...

Page 45: ... I I I CENTER 100 000 MHz SPAN 100 Is 42 RES DW 30 kHt VW 100 ktiz SWP 20 0 InPPC Figure 2 8 Log Scale Switching Uncertainty Measurement Ihble 2 8 Log Scale Switching Uncertainty SCALE MKR Amplitude I I dB DIV PW Deviation W 0 ref Allowable Deviation WV 0 ref f0 5 f0 5 f0 5 2 20 Performance Tests ...

Page 46: ...contribute to IF gain uncertainty as shown Range Uncertainty uncorrected 20 to 30 C 0 dBm to 55 9 dBm Res BW 230 Hz f0 6 dB Res BW 10 Hz f1 6 dB 56 0 dBm to 129 9 dBm Res BW 230 Hz l O dB Res BW 10 Hz f2 0 dB Description The IF gain steps are tested over the entire range from 0 dBm to 129 9 dBm using an RF substitution method The 10 dB 2 dB and 0 1 dB steps are compared against a calibrated signal...

Page 47: ...2 kHz 8 9 10 11 12 Press MARKER PEAK SEARCH j 1 or adjust CENTER FREQUENCY to center signal trace on display Set analyzer as follows iEEGii 100 Hz RES j 1 kHz LOG ENTER dB DIvj 1 dB Press MARKER PEAK SEARCHJ Ia Press sHIFTI CATTEN to permit extended reference level settings Set the analyzer REFERENCE LEVEL j IDEOj and frequency synthesizer amplitude according to Iable 2 9 settings Use the frequenc...

Page 48: ...Figure 2 10 IF Gain Uncertainty Measurement Ihble 2 9 IF Gain Uncertainty 10 dB Steps Ihble 2 9 IF Gain Uncertainty 10 dB Steps CREFERENCE LEVEL Frequency iE EZBW Deviation Pm Synthesizer m Marker A Amplitude Amplitude ww WV 0 2 100 0 ref 10 12 100 20 22 100 30 32 100 40 42 100 50 52 100 60 62 10 70 72 10 rn ENTER dB DIv 80 32 100 90 42 100 100 52 10 110 62 10 120 72 10 Performance Tests 2 23 ...

Page 49: ... the MKR A amplitude and record it in the table Ihble 2 10 IF Gain Uncertainty 2 dB Steps REFERENCE LEVEL Frequency Deviation Pm Synthesizer MARKER A Amplitude Amplitude Wm W 1 9 3 9 0 ref 3 9 5 9 5 9 7 9 7 9 9 9 9 9 11 9 L 0 1 dB Gain Steps 19 Set REFERENCE LEVEL to 0 dB 20 Set the frequency synthesizer for an output power level of 2 00 dBm Set the amplitude increment for 0 1 dB steps 21 Press MA...

Page 50: ... LEVEL WW 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 Frequency Synthesize1 Amplitude WW 2 00 2 10 2 20 2 30 2 40 2 50 2 60 2 70 2 80 2 90 3 00 3 10 3 20 3 30 3 40 3 50 3 60 3 70 3 80 3 90 Deviation MKR A AAplitude w9 0 ref Performance Tests 2 25 ...

Page 51: ...80 to 120 dBm dB dB 24 Find the largest positive and negative deviations in Table 2 10 and Table 2 11 Largest Positive Deviation Largest Negative Deviation C able 10 D Yhble 11 dB dB dB dB 25 The sum of the positive deviations recorded in A C and D should not exceed 0 6 dB 26 The sum of the negative deviations recorded in A C and D should not be less than 0 6 dB 27 The sum of the positive deviatio...

Page 52: ...0 dB display 20 to 30 C sf1 5 dB over 0 to 90 dB display Linear 4 3 of Reference Level for top 9 l 2 divisions of display Description Amplitude fidelity in log and linear modes is tested by decreasing the signal level to the spectrum analyzer in 10 dB steps with a calibrated signal source and measuring the displayed amplitude change with the analyzer s MARKER A function FREOUENCY SYNTHESIZER SPECT...

Page 53: ... 1 Hz 6 Press MARKER Ia Step the frequency synthesizer output amplitude from 10 dBm to 80 dBm in 10 dB steps noting the MARKER A amplitude a negative value at each step and recording it in column 2 of Table 2 12 Allow several sweeps after each step for the video filtered trace to reach its final amplitude See Figure 2 12 7 Subtract the value in column 1 from the value in column 2 for each setting ...

Page 54: ...tude Column 2 Column 1 Amplitude Amplitude W c 1 am Step w9 lO 0 ref 0 ref 0 ref 0 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 ip R 10 dB WKR A 0 000 w c EF 9 7 dBm ATTEN 20 d0 i0 00 dB CENTER 20 000 iS0 MHz SPAN 0 Hz AES EW 1 kHz VBW i HZ SWP 300 em Figure 2 12 Amplitude Fidelity Measurement Performance Tests 2 29 ...

Page 55: ...LE LIN pushbutton Press MARKER PEAK SEARCH MKR to center the signal on the display 13 Set CFREQUENCY SPAN to 0 Hz and V1DEOj to 1 Hz Press SHIFT AUTOP resolution bandwidth MARKER a 14 Decrease frequency synthesizer output amplitude by 10 dB steps noting the MARKER A amplitude and recording it in column 2 of Table 2 13 lhble 2 13 Linear Amplitude Fidelity 0 10 87 9 21 10 23 10 17 72 2 30 Performanc...

Page 56: ...brator signal is measured with a power meter SPECTRUM ANALYZER POWER METER POWER SENSOR Figure 2 13 Calibrator Amplitude Accuracy Test Setup Equipment Power Meter HP436 A Power Sensor HP8481 A Adapter Type N f to BNC m 1250 1477 Procedure 1 Connect equipment as shown in Figure 2 13 2 Measure output level of the CAL OUTPUT signal The value should be 10 0 dBm f0 3 dB dBm Performance Tests 2 31 ...

Page 57: ...2 2 dB f3 0 dB k2 2 dB 4 3 0 dB f0 6 dB Frequency response is checked across the full range of the spectrum analyzer In the non preselected range from 100 Hz to 2 5 GHz three signal sources are used to make swept measurements a function generator 100 Hz to 100 kHz a frequency synthesizer 100 kHz to 60 MHz and a synthesized sweeper 60 MHz to 2 5 GHz In the preselected bands from 2 GHz to 22 GHz a s...

Page 58: ... and Figure 2 18 Equipment Synthesized Sweeper HP 8340A B Frequency Synthesizer HP 3335A Function Generator HP 3312A Power Meter HP436 A Power Sensor H P 8485A Adapter Type N m to APC 3 5 m 1250 1743 Adapter Type N Male Connectors 1250 0778 Adapter Type N m to BNC f 1250 0780 Adapter APC 3 5 f to APC 3 5 f two required 1250 1749 Power Splitter HP 11667B Low loss Microwave Test Cable APC 3 5 8120 4...

Page 59: ... Percent Modulation fullycw 6 Adjust function generator FREQUENCY to place generator signal near the center graticule on the analyzer display 7 Adjust the AMPLITUDE VERNIER on the function generator until the peak of the generator signal is at the reference level line on the analyzer display 8 Press LOG ENTER dB plv on the analyzer and key in 1 dB per division 9 Adjust function generator AMPLITUDE...

Page 60: ...unction may be used to measure this amplitude difference Deviation 1 kHz to 100 kHz 13 Press 2 22GHT on the analyzer Key in the following settings CENTER FREQUENCY 100 HZ FREQUENCY SPAN 100 Hz 14 Press LOG ENTER dB DIv and key in 1 dB 15 Set function generator controls as follows RANGE Hz 100 FREQUENCY 1 MODULATION all out 16 Adjust function generator FREQUENCY to center signal on analyzer display...

Page 61: ... Frequency Response Test Setup 100 kHz to 60 MHz 20 Press 7ZX on the analyzer Key in the following settings CENTER FREQUENCY 4 MHZ FREQUENCY SPAN 2 MHz CENTER dB DIV 1 dB 21 Set the controls of the frequency synthesizer as follows FREQUENCY 4 MHz AMPLITUDE 2 dBm 22 Adjust the output amplitude of the frequency synthesizer to place the signal at the 8th graticule line 23 Key in the analyzer settings...

Page 62: ... l ble 2 14 Note Disregard any response 1100 kHz L REP 0 0 darn ATTLN 10 dB 1 dB Spectrum Analyzer START STOP FRJ3Q F R E Q 100 Hz 4 MHz I 4 MHz 60 MHz 60 MHz 2 5 GHz START II SWP 20 0 In Figure 2 17 Frequency Response Measurement 100 kHz to 4 MHz lfdble 2 14 100 Flz to 2 5 GHz Frequency Rand Frequency Synthesizer Freq Sweep Width 2 000 lOO Hz 3 998 OOO Hz 30050 kHz 59900 kHz Synthesized Sweeper T...

Page 63: ...settings as follows FREQUENCY 30 050 OOO Hz SWEEP WIDTH 59 900 000 Hz 33 Press TRACE A CLEAR WRITE and C 1 on the analyzer 34 Press START SINGLE 50 SEC SWEEP on the frequency synthesizer Wait for completion of the sweep 35 Activate MARKER NORMAL on the analyzer Determine minimum and maximum amplitude points by using the DATA knob to position the marker Record the amplitude and frequency for each o...

Page 64: ...he 100 MHz calibration setting 38 Press NSTR PRESET on the synthesized sweeper Set the controls of the synthesized sweeper as follows CW 100 MHz POWER LEVEL 9 0 dBm RF on LEVELING INT 39 On the synthesized sweeper press POWER LEVELS and adjust the ENTRY knob for a power meter indication of 15 00 dBm fO 10 dB at 100 MHz 40 On the power meter press RANGE HOLD turning it on 41 On the synthesized swee...

Page 65: ...7 dBm 44 On the spectrum analyzer press MARKER PEAK SEARCH and adjust the front panel AMPTD CAL control for a MARKER indication of 10 00 dBm fO O1 dB 45 On the synthesized sweeper key in START FREQ 60 MHz kz 2 5 GHz CsWEEPj 150 s SWEEP C 1 SWEEP 46 On the spectrum analyzer key in TART FREQ 60 MHz k 1 2 5 GHz TRACE B CLEAR WRITE TRACE B MAX HOLD 47 On the synthesized sweeper press SWEEP SINGLE_ and...

Page 66: ... marker on the lowest point on the TRACE B waveform Record the amplitude and frequency for this minimum point in Iable 2 14 The minimum absolute amplitude should be greater than 11 20 dBm On the spectrum analyzer press MARKER al and use the DATA knob to position a second marker on the highest point on the TRACE B waveform Flatness total peak to peak amplitude deviation of the displayed trace shoul...

Page 67: ... 4 of Table 2 15 The maximum absolute amplitude should be less than 7 70 dBm 60 On the spectrum analyzer use the DATA knob to position a marker on the lowest point on the TRACE B waveform Record the amplitude and frequency for this minimum point in Column 4 of Table 2 15 The minimum absolute amplitude should be greater than 12 30 dBm 61 On the spectrum analyzer press MARKER al and use the DATA kno...

Page 68: ...peat steps 62 through 72 for the six remaining frequency ranges listed in Ihble 2 15 setting both the power meter CAL FACTOR 96 switch and the synthesized sweeper Icw frequency for the power sensor Cal Frequency listed in Column 3 74 For each frequency band tested calculate the overall flatness by subtracting the maximum amplitude value from the minimum amplitude value recorded in Column 4 of Ihbl...

Page 69: ...r 82 On the spectrum analyzer key in i ISHIFT KSU 6 Hz ISHIFT REFERENCE LEVEL KSZ 0 dB setting the K band conversion loss to 30 dB Set the spectrum analyzer controls as follows RES BW 1 MHz REFERENCE LEVEL 3 dBm LOG SCALE 1 dB DIV 83 On the spectrum analyzer press MARKER Q The MARKER indication should be 0 00 dBm fl OO dB Subtract 0 00 dBm from the MARKER amplitude and record the result 321 4 MHz ...

Page 70: ...100 MHz Spec 11 20 8 80 1 20 2 5 8 GHz 2 GHz 3 9 GHz 3 GHz 3 9 GHz 5 8 GHz 5 GHz Spec 12 30 7 70 3 40 5 8 12 5 GHz 5 8 GHz 9 15 GHz 7 GHz 9 15 GHz 12 5 GHz 11 GHz Spec 12 30 7 70 3 40 12 5 18 6 GHz 12 5 GHz 15 55 GHz 14 GHz 15 55 GHz 18 6 GHz 17 GHz spec 12 80 7 20 4 40 18 6 20 GHz 18 6 GHz 20 GHz 19 GHz Spec 12 80 7 20 4 40 20 22 GHz 20 GHz 22 GHz 21 GHz Spec 13 60 6 40 6 00 umulative Flatness dB...

Page 71: ......

Page 72: ...ope g Set Channel B trigger level to trigger on positive slope h Set both Channel A and Channel B ac dc switches to dc i Connect the digital voltmeter to Channel A TRIGGER LEVEL OUT Be sure to ground the DVM properly j Adjust Channel A trigger level to set a DVM voltage reading of 0 3 v k Repeat steps i and j for Channel B 5 Set analyzer WEEP TIME to 20 ms Reset the universal counter and press SWE...

Page 73: ...rtical graticule 10 Press SHIFT GZiX 11 Set analyzer SWEEP TIME to 20 s Allow the universal counter enough time to settle at this sweep time 12 Note the measured sweep time on the universal counter and record this value in Table 2 17 The measured sweep time should be a value between the minimum and maximum values given in Iable 17 13 Repeat steps 11 and 12 for 200 s and 240 s sweep times Ihble 2 1...

Page 74: ...and Level dBc Hz 320 Hz 80 1 kHz 85 10 kHz 90 100 kHz 105 A 5 7 GHz signal with low phase noise is input to the spectrum analyzer The signal and noise sidebands are displayed on the analyzer and the trace is video averaged The displayed noise sideband level at various frequency offsets is measured and the measured values are corrected for log amplification and detection errors then normalized to a...

Page 75: ...REQ ZERO control for maximum signal amplitude Repeat this frequency calibration on the other analyzer When completed press 21 again on each of the analyzers 3 Connect 1ST LO OUTPUT of source analyzer to RF INPUT of analyzer under test as shown in Figure 2 22 Note Do not connect the frequency reference on the rear panel of the analyzers to a common frequency reference 4 Key in the following on the ...

Page 76: ...H j 1 Wait again for the completion of the sweep Press SHIFT VIDEoJG to initiate video averaging When the VID AVG readout at the left edge of the display reaches 20 press m TRACE B mj 9 10 Press MARKER PEAK SEARCH In and key in 320 Hz Record the MARKER A amplitude dBc See Figure 2 23 Find the equivalent noise power bandwidth BWenp for the 10 Hz resolution bandwidth filter by multiplying the 3 dB b...

Page 77: ...ter dBc 2 5 dB 10 log BW dBcil Hz The result should be c 85 dBc l Hz Press iF SWEEP m4tE Change FREQUENCY SPAN to 25 kHz Press SHIFT VIDEO G When the VID AVG readout reaches 20 or higher press cm TRACE B FiFJ Press MARKER PEAK SEARCH la and key in 10 kHz Record the MARKER A amplitude dBc Compute the noise sideband level at a 10 kHz offset by the procedure of steps 10 and 11 using the 3 dB bandwidt...

Page 78: ... GHz Offset from Carrier Center Frequency Sidebands 3 Description The line related sidebands are measured on signals of 100 MHz 2 4 GHz 2 6 GHz and 5 7 GHz A second HP 8566AIB Spectrum Analyzer is used as the signal source for this test Therefore if measured values are not within specified limits either analyzer may be at fault SPECTRUN ANALYZER 7ADAPTER SPECTRUN ANALYZER fSOURCEl ADAPTER ADAPTER ...

Page 79: ...on each analyzer Connect CAL OUTPUT of source analyzer to RF INPUT of analyzer under test as shown in Figure 2 24 Key in the following on the analyzer under test CENTER FREQUENCY 100 MHZ CFREQUENCY SPAN 1 2 kHz Wait for asterisk in upper right of display to disappear Press MARKER PEAK SEARCH jMKR MKR REF LVL and wait for asterisk to disappear Trace should now be centered on display Press cm mjG SW...

Page 80: ...UT of analyzer under test as shown in Figure 2 24 Key in the following on the source analyzer ENTER FREQUENCY_ FREQUENCY SPAN SHIFT MKR REF LVL Display diagnostics CSHIFT REsjr YTO Pretest Mode SWEEP SINGLE for 2 4 GHz OHz convenience The first line of the diagnostic display and the CENTER readout should both now indicate 2 400 000 000 GHz This is the 1ST LO OUTPUT frequency Key in CENTER FREQUENC...

Page 81: ...on 400 1 Set the AC power source output equal to the required line voltage and frequency The analyzer under test should be operated at 400 Hz and the source analyzer at 50 to 60 Hz 2 Allow both analyzers to warm up for at least one half hour with LINE switch in either STANDBY or ON position 3 Perform frequency calibration of each analyzer as specified in step 2 of standard instrument procedure 4 C...

Page 82: ...equency for example 400 Hz 800 Hz 1200 Hz 13 The MARKER A amplitude for all line sidebands below 2 kHz should be c 55 dB The A amplitude for sidebands from 2 kHz to 5 5 kHz should be c 65 dB Largest Level 2 kHz dB a t H z Largest Level 2 kHz to 5 5 kHz dB at H Z 14 Change CENTER FREQUENCY of source analyzer to 5 7 GHz and repeat steps 5 through 13 for 5 7 GHz Performance Tests 2 57 ...

Page 83: ...th no signal applied to the analyzer input 50 Ohm Coaxial Termination HP 909A Option 012 1 Press C 1 2 Connect CAL OUTPUT to RF INPUT 3 Press LRECALL Adjust AMPTD CAL for a MARKER amplitude of 10 00 dBm f0 02 dB 4 Disconnect CAL OUTPUT Terminate RF INPUT with a 50 ohm coaxial termination 5 Press YYZZ Key in settings as follows START FREQ Ti Ei 8 0 Hz 180 Hz REFERENCE LEVEL m 70 dBm 0 dB VIDEO BW H...

Page 84: ...1 kHz OHz 20 ms Wait several seconds for the trace to stabilize VID AVG 20 Read the amplitude from the MARKER readout The value should be less than 112 dBm Set CENTER FREQUENCY according to Table 2 18 At each setting allow several seconds for the trace to stabilize before reading the amplitude from the MARKER readout The maximum allowable level for each frequency is given in the table Performance ...

Page 85: ...e Noise Level CENTER FREQUENCY 2 0 MHz 1 001 GHz 2 499 GHz 2 510 GHz 5 799 GHz 5 810 GHz 12 499 GHz 12 510 GHz 18 59 GHz 18 61 GHz 22 0 GHz MARKER Amplitude WW Maximum Amplitude Pm 134 134 134 132 132 125 125 119 119 114 114 2 60 Performance Tests ...

Page 86: ...OUTPUT and terminate RF INPUT with a 50 ohm coaxial termination 5 Key in the following 6 REFERENCE LEVEL 20 dBm km 0 dB RES 30 kHz VIDEO 1 kHz sTop 1 5 GHz Press DISPLAY LINE ENTER and key in 100 dBm Note There should be at least 3 dB margin between the noise trace and the display line so that any residual responses may be distinguished from the noise It may be necessary to reduce the resolution o...

Page 87: ...s to be marginal perform the following check to a b determine whether or not it exceeds the specification Press ISAVE_ 0 Press MARKER 1 and place the marker on the peak of the response in question C d Press MARKER SIGNAL TRACK then activate SWEEP ICONT Reduce FREQUENCY SPAN to 1 MHz Reduce RESJ until there is at least a 7 dB margin between the display line and the average noise level The amplitude...

Page 88: ...90 MHz 1 GHz 1 kHz 15 Set the display line at 95 dBm Check for residual responses 95 dBm by using steps 7 through 9 Largest Residual Level dBm at Hz 16 Step CENTER FREQUENCY to 11 150 GHz with Q and check for residual responses 95 dBm at each step by using steps 7 through 9 Largest Residual Level dBm at H Z 17 Key in the following settings START FREQ 11 6 GHz TFEj 12 5 GHz jiiZZTBW_ 3 kHz 18 Check...

Page 89: ...onses x 85 dBm by using steps 7 through 9 Largest Residual Level H Z 22 Key in the following dBm at TART FREQ 18 5 GHz sTopI 2 2 GHz 23 Set the display line at 80 dBm 24 Check for residual responses 80 dBm by using steps 7 through 9 Largest Residual Level H Z dBm at 2 64 Performance Tests ...

Page 90: ... Order Intercept TOI 5 dBm 100 Hz to 5 MHz 7 dBm 5 MHz to 5 8 GHz 5 dBm 5 8 GHz to 18 6 GHz Description Second harmonic distortion in the non preselected and preselected bands is checked with a signal source and low pass filter The low pass filter ensures that the harmonics measured are due to the analyzer and not the source Third order intermodulation distortion is measured in the non preselected...

Page 91: ...tive Power Divider Omni Spectra 2090 6202 00 20 dB Attenuator 2 required HP 8493B Option 020 3 dB Attenuator HP 8493B Option 003 Low Pass Filter 250 MHz K L 5L380 250 B B Low Pass Filter 8 GHz K L 6L250 8000 NP N Low Pass Filter 1200 MHz HP 360B 61 cm 24 in Cable Assembly SMA Male Connectors 2 required 5061 1086 Adapter Type N m to BNC f 2 required 1250 0780 Adapter Type N m to SMA f 1250 1250 Ada...

Page 92: ...monic should be below the display line c 80 dBc Second harmonic level of 230 MHz dBc Replace the 250 MHz low pass filter with the 1200 MHz low pass filter Set the synthesized sweeper for an output CW frequency of 800 000 MHz Press 21 on the analyzer Key in CENTER FREQUENCY 800 MHz FREQUENCY SPAN 100 kHz REFERENCE LEVEL 30 dBm Adjust synthesized sweeper output level to place peak of signal trace at...

Page 93: ...e below the display line 100 dBc Intermodulation 2 6 Distortion Second harmonic level of 7200 MHz dBc Set both synthesized sources as follows RANGE 10 dBm METER MODE LEVEL RF OUTPUT OFF ALC INT AM OFF FM DEVIATION MHz OFF 27 Connect equipment as shown in Figure 2 29 with output of power divider connected to power sensor The FREQ REFERENCE switch on the rear panel of the analyzer should be set to I...

Page 94: ...change in the measured power level To minimize flexing place the power sensor close to the analyzer input 32 Press 7GZiZJ on the spectrum analyzer l 4 POWER NETER JUT FllEO RVElEYCE I IPOWER SENSOR ADAPTER 3 DB POWER ATTENUATOR D I V I D E R SIBNAL BENERATOR Figure 2 29 Intermodulation Distortion Test Setup 33 Key in analyzer settings as follows CENTER FREQUENCY 2099 5 MHZ CF STEP SIZEj 1 MHz FREQ...

Page 95: ...amplitude dB 38 Choose the smallest MKR A amplitude in steps 36 and 37 Record its absolute value dB For example if one MKR A amplitude is 82 dB and the other is 79 dB record 79 dB This value is S the third order suppression 39 Compute the third order intercept TOI as follows TO1 P S 2 where P input signal power and S third order suppression from step 38 TO1 25 dBm dBl2 dBm 40 The result should be ...

Page 96: ...tion Set output levels of synthesizers according to the procedure of steps 29 and 30 44 Connect the output of the power divider to the analyzer input as shown in Figure 2 29 45 Key in the following analyzer settings CCENTER FREQUENCY 3999 5 MHZ FREQUENCY SPAN l MHZ REFERENCE LEVEL 20 dBm 46 Press MARKER OFF PEAK SEARCH and wait for PEAKING message to disappear from display 47 Set FREQUENCY SPAN to...

Page 97: ...amplitude dB 52 Choose the smallest MKR A amplitude in steps 50 and 51 Record its absolute value S dB 53 Compute the TOI TO1 P S 2 25 dBm dB 2 dBm 54 The result should be 7 dBm TO1 for signals of 3999 5 MHz and 4000 5 MHz dBm 55 Repeat steps 41 through 53 for the input signal frequencies and the third order products shown in Ikble 2 19 The TO1 for each setting should be 5 dBm Ihble 2 19 TO1 Measur...

Page 98: ...st LO frequency and all positive integer values of n In this test only values of n corresponding to the analyzer mixing modes are used Multiple responses are checked by applying an input signal and measuring the response at those center frequencies for which a harmonic of the 1st LO mixes with the input signal SPECTRUM ANALYZER QADAPTER MA CMLE ACNIIBLV lPo1 ADAPl BNC TEE ER Figure 2 31 Image Mult...

Page 99: ...6 Adjust the power level of the synthesized sweeper to place the peak of the signal trace at the top CRT graticule line Note If the maximum output power level of the synthesized sweeper is not enough to place the signal peak at the top CRT graticule line then adjust the spectrum analyzer REFERENCE LEVEL as required to place the signal peak at the top CRT graticule line 7 Press MARKER Ia Using the ...

Page 100: ...57 200 7196 500 7839 300 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4571 500 5214 300 9464 300 0107 100 4357 200 5238 100 5880 900 0797 700 1440 500 6357 200 4348 300 4991 100 9017 900 9660 700 3687 600 4330 400 8357 200 4848 300 5491 100 10017 900 10660 700 15187 600 15830 400 ZO357 200 r 1 Displayed Spurious Displayed Spurious Amplj it 1 it 1 ide Maximum WC 70 60 60 60 60 70 60 60 70 60 60 60 60 70 60 60 6...

Page 101: ...ess MARKER a Using the DATA knob determine the amplitude of the spurious response and enter the result in Iable 2 21 15 Change CENTER FREQUENCY to 2 36790 GHz The multiple response at the center frequency should be below the m SWEEP CONT display line s 70 dBc Multiple response at 2 36790 GHz dBc 16 Press ISHIFT MKR A STP SIZE Q 17 Set the synthesized sweeper output CW frequency and analyzer CENTER...

Page 102: ... the displayed deviation to give the deviation due to gain compression only SPECTAUWANALYZER YER Figure 2 32 Gain Compression Test Setup Equipment Synthesized Signal Generator HP 8340A Power Meter HP436 A Power Sensor HP8485A Adapter Type N m to SMA f 2 required 1250 1250 Adapter Type N Female Connectors 1250 0777 Adapter SMA f to SMA f 1250 1158 Adapter BNC Tee m f f 1250 0781 Low Loss Microwave ...

Page 103: ...ain amplitude readouts in dBm Turn the AMPTD CAL control fully clockwise Press MARKER NORMAL Connect cable to power sensor and adjust synthesizer output level for a power meter reading of 15 00 dBm f0 02 dB Reconnect cable to the spectrum analyzer RF INPUT Change spectrum analyzer REFERENCE LEVEL to 5 dBm Record the MKR A amplitude dB This is the IF gain error in changing the reference level from ...

Page 104: ...m analyzer input 22 Change REFERENCE LEVEL to 5 dBm Record the MKR Aamplitude dB 23 Subtract the value recorded in step 9 from the value obtained in step 22 to find the gain compression dB The result should be 1 0 dB less than 1 dB compression 24 Press FZiYYJ on the spectrum analyzer Press CsHlFTl ATTENY SHIFT 1 0 dBm 25 Set synthesizer to 9000 000 MHz Connect cable from synthesizer to power senso...

Page 105: ...m Record the MKR A amplitude dB 32 Subtract the value recorded in step 9 from the value obtained in step 31 to find the gain compression dB The result should be 1 0 dB less than 1 dB compression 33 Disconnect cable from the spectrum analyzer RF INPUT Connect the spectrum analyzer CAL OUTPUT to RF INPUT 34 Press c 1 MARKER PEAK SEARCH Adjust AMPTD CAL for a MARKER amplitude of 10 00 dBm f0 02 dB 2 ...

Page 106: ...e SPECTRUM ANALYZER BSENSOR Figure 2 33 1st LO Output Amplitude Test Setup Equipment Power Meter HP436A Power Sensor HP8485A Procedure 1 Press 2 Key in a sTop of 5 8 GHz 2 Set SWEEP TIME to 100 seconds 3 Calibrate power meter and sensor Connect equipment as shown in Figure 2 33 4 Observe the meter indication as the analyzer sweeps from 2 0 to 5 8 GHz The indication should be 5 dBm across the full ...

Page 107: ...NALYZER DIGITAL VOLTMETER Figure 2 34 Sweep Tune Out Accuracy Test Setup Equipment Digital Voltmeter HP 3456A Procedure 1 Press 7ZK on the analyzer Set FREQUENCY SPAN to 0 Hz 2 Connect digital voltmeter to the SWEEP TUNE OUT auxiliary output on the rear panel of the analyzer as indicated in Figure 2 34 3 Set CENTER FREQUENCY according to Table 2 22 and record the voltmeter readings in the table Th...

Page 108: ...REQUENCY 0 Hz 0 010 1 MHz 0 011 12 MHz 0 022 130 MHz 0 143 670 MHz 0 693 1 3 GHz 1 336 5 7 GHz 5 824 12 5 GHz 12 760 18 6 GHz 18 982 22 GHz 22 450 Voltmeter Reading Volts Min 1 Actual I Max 0 010 0 009 0 002 0 117 0 647 1 264 5 576 12 240 18 218 21 550 Performance Tests 2 83 ...

Page 109: ...r sweep times 20 ms is tested by checking the spacing of the signal peaks on the displayed waveform SPECTRUMANALVZER SYNTHESIZED SWEEPER Figure 2 35 Fast Sweep Time Accuracy 20 ms Test Setup Equipment Function Generator HP 3312A Universal Counter HP5316A Signal Generator HP 8340A Procedure 1 Connect equipment as shown in Figure 2 35 2 Press ZZQ on spectrum analyzer 3 Key in analyzer settings as fo...

Page 110: ... for a reading of 2 00 f0 02 kHz 10 Adjust spectrum analyzer TRIGGER LEVEL to place a peak of the triangular waveform on the first graticule from the left edge of the CRT display as a reference Adjust function generator amplitude if necessary to provide a signal large enough to produce a stable display The fifth peak from the reference should be within tO 5 division of the sixth graticule from the...

Page 111: ...cy Test 20 ms Jhble 2 23 Fhst Sweep Time Accuracy 20 ms SWEEP TIME Function Generator Frequency Sweep Time Error wa divisions 5 ms 2 00 f0 02 2 ms 5 00 f0 05 1 ms 10 0 zto 1 200 ps 50 0 f0 5 100 ps 100 fl 2 86 Performance Tests ...

Page 112: ...on after being off for a period not exceeding 24 hours Because the frequency reference is sensitive to shock and vibration care must be taken not to disturb the spectrum analyzer during the 24 hour period in which the frequency measurement is made The frequency reference should remain within its attained aging rate if the instrument is left on the instrument orientation with respect to the earth s...

Page 113: ...ANNEL A Input Impedance 50 CHANNEL A ATTEN xl CHANNEL A Coupling AC CHANNEL A LEVEL midrange 3 Connect equipment as shown in Figure 2 37 4 Record the frequency of the analyzer time base as measured by the counter Frequency 10 M H z Date Time Ambient Temperature 5 Allow the analyzer to remain undisturbed for 24 hours then note the time base frequency again Frequency 10 M H z Date Time Ambient Tempe...

Page 114: ...Table 2 24 Performance Tkst Record Hewlett Packard Company Model HP 8566B Serial No IF Display Section RF Section Tested by Report No Date Performance Tests 2 89 ...

Page 115: ...998 GHz 3 GHz 2 98 GHz 6 GHz 5 999 98 GHz 6GHz 5 999 8GHz 6 GHz 5 998 GHz 6 GHz 5 98 GHz 9GHz 8 999 98GHz 9GHz 8 999 8GHz 9 GHz 8 998 GHz 9GHz 8 98 GHz 9GHz 8 8GHz 12 GHz 11 999 98 GHz 12 GHz 11 999 8 GHz 12 GHz 11 998 GHz 12 GHz 11 98 GHz 12 GHz 11 8 GHz 15 GHz 14 999 98 GHz 15 GHz 14 999 8 GHz 15 GHz 14 998 GHz 15 GHz 14 98 GHz 15 GHz 14 8 GHz 18 GHz 17 999 98GHz 18 GHz 17 999 8 GHz 18 GHz 17 99...

Page 116: ... 4 GHz 1 GHz 3 600 4 400 10 GHz 1 GHz 9 600 10 400 15 GHz 1 GHz 14 600 15 400 20 GHz 1 GHz 19 600 20 400 MARKER A Frequency C E N T E R FREcjumc J CFREQUENCYSPAN Low GW High WW 4 GHz 500 MHz 3 800 4 200 10 GHz 500 MHz 9 800 10 200 15 GHz 500 MHz 14 800 15 200 20 GHz 500 MHz 19 800 20 200 10 GHz 5 GHz 8 000 12 000 15 GHz 5 GHz 13 000 17 000 18 GHz 5 GHz 16 000 20 000 10 GHz 10 GHz 6 000 14 000 15 G...

Page 117: ...Hz 5 kHz 1 kHz 2 kHz 300 Hz 500 Hz 100 Hz 200 Hz 30 Hz 100 Hz 10 Hz 100 Hz MARKER A Readout of 3 dB Bandwidth 1 Min 2 400 MHz 900 kHz 270 0 kHz 90 0 kHz 27 00 kHz 9 00 kHz 2 700 kHz 800 Hz 240 Hz 80 Hz 24 0 Hz 8 0 Hz Actual 3 600 MHz 1 100 MHz 330 0 kHz 110 0 kHz 33 00 kHz 11 00 kHz 3 300 kHz 1 200 kHz 360 Hz 120 Hz 36 0 Hz 12 0 Hz 2 92 Performance Tests ...

Page 118: ...100 Hz 30 Hz 10 Hz FREQUENCY SPAN jjBW 20 MHz 15 MHz 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 10 kHz 5 kHz 2 kHz 500 Hz 100 HZ 100 Hz 300 Hz AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO Measured 60 dB Bandwidth Measured 3dFS Bandwidth Bandwidth Selectivity 60 dH BW 3dBBW Maximum Selectivity Ratic 15 l 15 l 15 l 15 1 13 l 13 l 11 l 11 l 11 l 11 l 11 l SO dB points sewrated bs cl00 Hz Performance Tes...

Page 119: ... kHz 100 kHz 30 kHz 10 kHz 3 kHz 1 kHz 300 Hz 100 Hz 30 Hz 10 Hz FREQUENCY SPAN 5 MHz 5 MHz 5 MHz 500 kHz 500 kHz 50 kHz 50 kHz 10 kHz 1 kHz 1 kHz 200 Hz 100 Hz Deviation MKR A Readout dB 0 ref Allowable Deviation WV 3 ref fl OO f0 50 f0 50 kO 50 Ito f0 50 f0 50 f0 50 f0 50 f0 80 f2 00 2 94 Performance Tests ...

Page 120: ...certainty Test lkst 6 Log Scale Switching Uncertainty Test Step 6 Log Scale Switching Uncertainty SCALE MKR Amplitude dB DIV Wm 1 I 2 I 5 10 Deviation Allowable WV Deviation ml 0 ref I 0 ref f0 5 f0 5 I f0 5 Performance Tests 2 95 ...

Page 121: ... Wm J 0 2 100 0 ref 10 12 100 20 22 100 30 32 100 40 42 100 50 52 100 60 62 10 70 72 10 ISHIFT ENTER df3pvJ 80 32 100 90 42 100 100 52 10 110 62 10 120 72 10 Step 18 IF Gain Uncertainty 2 dB Steps REFERENCE LEVEL Frequency Wm Synthesizer Amplitude VW Deviation MARKER A Amplitude 0 m 1 9 3 9 3 9 5 9 5 9 7 9 7 9 9 9 9 9 11 9 0 ref u 2 96 Performance Tests ...

Page 122: ...LEVEL Wm 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 Frequency Synthesizer Amplitude ww 2 00 2 10 2 20 2 30 2 40 2 50 2 60 2 70 2 80 2 90 3 00 3 10 3 20 3 30 3 40 3 50 3 60 3 70 3 80 3 90 Deviation MKR A Amplitude 9 0 ref Performance Tests 2 97 ...

Page 123: ...tive 80 to 120 dBm 24 Recorded deviation from steps 18 and 22 Largest Positive step 18 Largest Negative step 18 Largest Positive step 22 Largest Negative step 22 25 Sum of Positive Deviations of steps 23 and 24 26 0 6 dB Sum of Negative Deviations of steps 23 and 24 0 6 dB 27 Sum of Positive Deviations of steps 23 and 24 28 1 0 dB Sum of Positive Deviations of steps 23 and 24 1 0 dB 2 99 Performan...

Page 124: ...f 0 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 2 MARKER A Amplitude WV 0 ref Fidelity Error Column 2 Column 1 P9 0 ref Cumulative Error 0 to 80 dB WV sk1 0 dB Step 14 Linear Scale Fidelity 0 10 Cumulative Error 0 to 90 dB 9 sf1 5 dB MARKER A Allowable Range Amplitude 53 of Reference Level WV WV 10 87 9 21 23 10 17 72 Performance Tests 2 99 ...

Page 125: ...Test 9 Calibrator Amplitude Accuracy Step 2 CAL OUTPUT Level Min Measured Max 1 Cal OUTPUT level I 10 30 dB 1 I 9 70 dB I 2 100 Performance Tests ...

Page 126: ...z Deviation 100 Hz to 1 kHz Min 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB 1 4 dB Measured Steps 27 35 and 49 100 Hz to 2 5 GHz Frequency Rand Frequency Synthesizer Freq Sweep START STOP Width FRRQ FRRQ 2 000 lOO Hz 3 998 OOO Hz 30050 kHz 59900 kHz Synthesized Sweeper Sweep Time 150 s 60 MHz 2 5 GHz Max 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 2 6 dB 1 2 d...

Page 127: ...Hz 100 MHz Spec 11 20 8 80 1 20 2 5 8 GHz 2 GHz 3 9 GHz 3 GHz 3 9 GHz 5 8 GHz 5 GHz Spec 12 30 7 70 3 40 i 8 12 5 GHz 5 8 GHz 9 15 GHz 7 GHz 9 15 GHz 12 5 GHz 11 GHz Spec 12 30 7 70 3 40 2 5 18 6 GHz 12 5 GHz 15 55 GHz 14 GHz 15 55 GHz 18 6 GHz 17 GHz Spec 12 80 7 20 4 40 18 6 20 GHz 18 6 GHz 20 GHz 19 GHz spec 12 80 7 20 4 40 20 22 GHz 20 GHz Spec emulative Flatness dB 100 Hz to 20 GHz 22 GHz 21 ...

Page 128: ...ms 170 ms 200 ms 2 s Step 6 Sweep Time Accuracy Sweep Times 220 ms Sweep Time Min M e a s u r e d M a x 18 ms 22 ms 27 ms 33 ms 45 ms 55 ms 63 ms 77 ms 81 ms 99 ms 99 ms 121 ms 153 ms 187 ms 180 ms 220 ms 1 8 s 2 2 s Step 12 Sweep Time Accuracy I I I SWEEP TIME MARKER A Time I I Performance Tests 2 103 ...

Page 129: ...d Level 320 Hz offset 16 Noise Sideband Level 1 kHz offset 2 1 Noise Sideband Level 10 kHz offset 26 Noise Sideband Level 100 kHz offset Min Measured Min Measured Max Max 80 dBc 80 dBc 85 dBc 85 dBc 90 dBc 90 dBc 105 dBc 105 dBc 2 104 Performance Tests ...

Page 130: ... 20 Line Related Sidebands Levels for 2 6 GHz signal Largest level 360 Hz away from signal 25 Line Related Sidebands Levels for 5 7 GFlz signal Largest level 360 Hz away from signal Option 400 13 Line Related Sidebands Levels for 5 7 GHz signal Largest level 2 kHz away from signal Largest level 2 kHz to 5 5 kHz away from signal Min Measured Max dB a t H z dB a t H z 7 0 dB 75 dBm dB a t H z 60 dBm...

Page 131: ...00 Hz 51 kHz 95 dBm 112 dBm Step 11 Average Noise Level CENTER FREQUENCY 2 0 MHz 1 001 GHz 2 499 GHz 2 510 GHz 5 799 GHz 5 810 GHz 12 499 GHz 12 510 GHz 18 59 GHz 18 61 GHz 2 0 GHz MARKER Amplitude ww Maximum Amplitude tam 134 134 134 132 132 125 125 119 119 114 114 2 106 Performance Tests ...

Page 132: ...GHz Largest Residual Level 16 Residual Responses 6 690 to 11 650 GHJ Largest Residual Level 18 Residual Responses 11 6 to 12 5 GHz Largest Residual Level 21 Residual Responses 12 4 to 18 6 GHz Largest Residual Level 24 Residual Responses 18 5 to 22 GEz Largest Residual Level Min I Measured dBm a t H z 100 dBm dBm a t H z 100 dBm dBm a t H z 100 dBm dBm a t H z 95 dBm dBm a t H z 95 dBm dBm a t H z...

Page 133: ... of 800 MHz 25 Second Harmonic Level of 7200 MHz 40 TO1 for signals of 2099 5 and 2100 5 MHz 54 TO1 for signals of 3999 5 and 4000 5 MHz 55 TO1 for signals of 8999 5 and 9000 5 MHz TO1 for signals of 13999 500 and 14000 499 MHz Min Measured 7 dBm 7 dBm 5 dBm 5 dBm Max 80 dBc 70 dBc 100 dBc 2 l 08 Performance Tests ...

Page 134: ...42 800 6321 400 6964 200 6 2517 900 3160 700 5357 200 9 4017 900 4660 700 8357 200 12696 500 13339 300 12 5517 900 6160 700 11357 200 17196 500 17839 300 15 4571 500 5214 300 9464 300 10107 100 14357 200 17 5238 100 5880 900 10797 700 11440 500 16357 200 1 Displayed Spurious Amplit Measured VW de Maximum ww 70 60 60 60 60 70 60 60 70 60 60 60 60 70 60 60 60 60 60 60 70 60 60 60 60 70 1 Performance...

Page 135: ...0 700 15187 600 15830 400 20357 200 T Displayed Spurious Amplit Measured ww Step 17 Multiple Responses de Maximum WC 60 60 60 60 60 60 60 60 60 60 60 60 60 50 1 Synthesized CENTER FREQUENCY Sweeper Multiple Response Frequency MHz W W 5700 000 2 68930 6000 000 1 18930 12000 000 8 107133 I I 8 535667 13000 000 1 06790 1 9107 0 53395 15000 000 10 107133 10 535667 Displayed s purious Amplit tde Measur...

Page 136: ...n Compression Steps Min 14 Gain Compression for input 10 to 0 dBm at 2 GHz 1 0 dB 27 Gain Compression for input 15 to 5 dBm at 3 GHz 1 0 dB 36 Gain Compression for input 15 to 5 dBm at 9 GHz 1 0 dB Measured Max 7l Performance Tests 2 111 ...

Page 137: ...Test 19 1st LO Output Amplitude Steps Min Measured Max 4 1st LO OUTPUT Level 5 dBm 2 112 Performance Tests ...

Page 138: ...curacy CENTER FREQUENCY 0 Hz 1 MHz 12 MHz 130 MHz 670 MHz 1 3 GHz 5 7 GHz 12 5 GHz 18 6 GHz 22 GHz Min 0 010 0 011 0 022 0 143 0 693 1 336 5 824 12 760 18 982 22 450 Voltmeter Reading Volts Actual 1 Max 0 010 0 009 0 002 0 117 0 647 1 264 5 576 12 240 18 218 21 550 Performance Tests 2 l 13 ...

Page 139: ... l t 21 Fast Sweep Time Accuracy 20 ms Step 10 Fhst Sweep Time Accuracy 20 ms Function Generator Frequency W 2 00 f0 02 5 00 f0 05 10 0 fO 1 50 0 f0 5 100 fl I 2 l 14 Performance Tests ...

Page 140: ...eference Error Test Test 22 Frequency Reference Error T t Steps I I Min Measured I Max I 4 Initial Frequency 1 0 M H z 5 Frequency after 24 hours 1 0 M H z 6 Difference between 4 and 5 H Z 0 01 Hz Performance Tests 2 l 15 ...

Page 141: ...ts 3 92 10 Step Gain and 18 4 MHz Local Oscillator Adjustments 3 96 11 Down Up Converter Adjustments 3 102 12 10 MHz Standard Adjustment SN 2637A and Below 3 106 12 10 MHz Standard Adjustment SN 2728A and Above 3 110 13 Sweep DAC and Main Coil Driver Adjustments 3 114 14 100 MHz VCXO Adjustments 3 126 15 M N Loop Adjustments 3 133 16 YTO Loop Adjustments 3 137 17 20 30 Loop Phase Lock Adjustments ...

Page 142: ... wait for the MAINS indicators red LEDs to go completely out Capacitors inside the instrument may still be charged even if the instrument has been disconnected from its source of power Use a non metallic tuning tool whenever possible Equipment Required The equipment required for the adjustment procedures is listed in Table l l Recommended Test Equipment at the beginning of this manual If the test ...

Page 143: ...which interact with or are related to other adjustments are indicated in the adjustments procedures It is important that adjustments so noted are performed in the order indicated to ensure that the instrument meets specifications Location of Test Points and Adjustments Illustrations showing the locations of assemblies containing adjustments and the location of those adjustments within the assembli...

Page 144: ...er Adjustments 10 Step Gain and 18 4 MHz Local Oscillator Adjustments 6 Video Processor Adjustments 7 3 MHz Bandwidth Filter Adjustments 8 21 4 MHz Bandwidth Filter Adjustments 11 Down Up Converter Adjustments 9 3 dB Bandwidth Adjustments 12 10 MHz Standard Adjustment 19 CAL Output Adjustments 13 Sweep DAC and Main Coil Driver Adjustments 13 Sweep DAC and Main Coil Driver Adjustments 13 Sweep DAC ...

Page 145: ...Magnitude of top bottom focus correction Centering of top bottom focus correction Magnitude of right left focus correction Centering of right left focus correction Sets orthogonality of CRT Adjusts spot size Sets adjustment range of front panel INTENSITY control Adjusts astigmatism of CRT Coarse adjusts CRT focus Adjusts rise and fall times of X deflection amplifier pulse Adjusts rise and fall tim...

Page 146: ... vertical long lines on graticule information Adjusts bottom line of graticule to align with fast sweep signal A3A8R5 GAIN 23 Adjusts high end of digitized sweep A3A8R6 OFFS 23 Adjusts low end of digitized sweep A3A9R36 OFS NEG 24 Adjusts offset of negative peak detect mode A3A9R39 GPOS 24 Adjusts gain for positive peak detect mode A3A9R44 OFS POS 24 Adjusts offset of positive peak detect mode A3A...

Page 147: ... range of front panel FREQ ZERO control A4A5R2 A4A5R32 A4A5R33 A4A5R44 A4A5R51 A4A5R54 1OV ADJ SGlO CAL SG20 1 VR SG20 2 Adjusts 1OV temperature compensation supply Adjusts 10 dB step gain Adjusts IF gain Adjusts first 20 dB step gain Adjusts variable step gain Adjusts second 20 dB step gain A4A6AlC31 A4A6AlR29 18 4 MHz NULL WIDE GAIN Nulls 18 4 MHz local oscillator signal Adjusts gain of down up ...

Page 148: ...Hz 300 kHz 10 kHz 3 kHz 1 kHz 9 Adjusts 3 MHz bandwidth 9 Adjusts 1 MHz bandwidth 9 Adjusts 300 kHz bandwidth 9 Adjusts 10 kHz bandwidth 9 Adjusts 3 kHz bandwidth 9 Adjusts 1 kHz bandwidth Option 067 C8 c9 Cl0 Cl1 Cl2 10 7 MHz NOTCH 20 Adjusts 321 4 MHz bandpass filter 20 Adjusts 321 4 MHz bandpass filter 20 Adjusts 321 4 MHz bandpass filter 20 Adjusts 321 4 MHz bandpass filter 20 Adjusts 32 1 4 M...

Page 149: ...IF gain 2 to 5 8 GHz Adjusts IF gain 5 8 to 12 5 GHz Adjusts IF gain 12 5 to 18 6 GHz Adjusts IF gain 18 6 to 22 GHz Adjusts linearity 5 8 to 12 5 GHz high end Adjusts linearity 12 5 to 18 6 GHz low end Adjusts linearity 12 5 to 18 6 GHz high end Adjusts linearity 5 8 to 12 5 GHz Adjusts linearity 12 5 to 18 6 GHz low end Adjusts linearity 12 5 to 18 6 GHz high end Adjusts linearity 18 6 to 22 GHz...

Page 150: ...put 165 MHz NULL 160 MHz NULL 170 MHz NULL 17 Nulls signal at 165 MHz 17 Nulls signal at 160 MHz 17 Nulls signal at 170 MHz 160 MHz PEAK VCO ADJ 160 MHz PEAK 160 MHz PEAK 17 Peaks 160 MHz output signal 17 Adjusts PLL3 VCO frequency 17 Peaks 160 MHz output signal 17 Peaks 160 MHz output signal 150 MHz ADJ 100 MHz ADJ 17 Adjusts VCO TUNE voltage at 150 MHz 17 Adjusts VCO TUNE voltage at 100 MHz 2 MH...

Page 151: ... 13 13 Adjusts 20 V dc supply voltage Adjusts 12 6 V reference for YTO dAC high end 6 2 GHz Adjusts summing amplifier offset Adjusts 5 8 GHz switchpoint overlap Adjusts 25 GHz span offset Adjusts 5 8 and 12 5 GHz switchpoint overlaps Adjusts HOV reference for YTO DAC low end 2 GHz Adjusts 2 5 GHz span offset A20R25 A20R34 A22A2 6 15 GHz 13 Sets high end frequency of YTO 2 3 GHz 13 Sets low end fre...

Page 152: ...ntal position of trace AlA4R27 X GAIN 3 4 Adjusts horizontal gain of trace AlA4R28 HFGAIN 3 Adjusts rise and fall times or X deflection amplifier pulse AlA5ClO Cl0 3 AlA5Cll Cl1 3 AlA5R7 Y POSN 3 4 AlA5R27 Y GAIN 394 AlA5R28 HF GAIN 374 Adjusts rise and fall times of Y deflection amplifier pulse Adjusts rise and fall times of Y deflection amplifier pulse Adjusts vertical position of trace Adjusts ...

Page 153: ...89 44A2R96 44A2R97 44A2R99 5 68 1 to 178 Sets adjustment range of LG20 1 96 K to 5 11 K Adjusts log fidelity 1 K to 31 6 K Log fidelity 90 9 to 237 Adjusts overall linear gain 5 16 2 to 46 4 Sets adjustment range of ATTEN 100 to OPEN Temperature compensation 1 K to OPEN Temperature compensation 1 K to OPEN Temperature compensation 1 K to OPEN Temperature compensation 1 K to OPEN Temperature compen...

Page 154: ...l of 10 V TC supply A4A4R44 1 K to OPEN Sets level of 10 V TC supply A4A4R45 0 to 100 Adjusts bandwidth shape in 10 kHz bandwidth A4A4R60 3 1 6 K to 8 25 K Adjusts LC filter bandwidth A4A4R64 6 19 K to 12 1 K Adjusts crystal filter bandwidth A4A4R65 909 to 2 73 K Adjusts positive feedback A4A4R94 100 K to 1M Sets adjustment range of LC amplitudes A4A5C9 10 A4A5RlO 11 A4A5R62 10 A4A5R70 10 A4A5R86 ...

Page 155: ...r bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Compensates for gain of A4A6Al Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter bandwidth Adjusts crystal filter band...

Page 156: ... K 75 K to 178 K 10 0 K to 17 5 K 100 to 5 11 K Function of Component Sets adjustment range of LC amplitude Adjusts bandwidth shape in 10 kHz bandwidth Adjusts crystal filter bandwidth Adjusts LC mode feedback Adjusts LC filter bandwidth 85662 60131 only 85662 60190 only Adjusts crystal filter bandwidth Adjusts LC filter bandwidth Sets TC of 3 kHz RBW Sets TC of 10 kHz RBW Sets TC of 300 kHz RBW S...

Page 157: ...ange of A6AlOR29 GE 10 to 40 K Sets adjustment range of A6AlOR81 GF 100 K to 196 K Adjusts band A breakpoint for best flatness 0 1 to 0 68 PF Sets YTX delay compensation 0 1 to 0 68 PF Sets YTX delay compensation OPEN Not loaded for HP 85660B 0 1 to 0 68 PF Sets YTX delay compensation 0 1 to 0 68 PF Sets YTX delay compensation 13 356 K 15 K Sets adjustment range of A6A12R63 5 8 GHz Open to 15 pF 0...

Page 158: ...50 A4A9R52 A4A9R55 A4A9R57 A4A9R59 A4A9R70 A4A9R72 A4A9R74 8 25 to 12 1 K Centers 3 kHz BW adjustment range 82 5 to 121 K Centers 10 kHz BW adjustment range 110 to 162 K Centers 300 kHz BW adjustment range 14 7 to 21 5 K Centers 1 MHz BW adjustment range 162 to 237 K Centers 3 MHz BW adjustment range 82 5 to 147 K Sets 1 0 dB step size 261 to 464 K Sets 0 2 dB step size 56 2 to 100 K Sets 1 2 dB s...

Page 159: ... K 5 62 K to 7 5 K 5 62 K to 7 5 K 5 62 K to 7 5 K 5 62 K to 7 5 K 5 62 K to 7 5 K 5 11 K to 6 81 K 5 11 K to 6 81 K 5 11 K to 6 81 K 5 11 K to 6 81 K 99 to 133 383 to 681 99 to 133 99 to 133 316 to 619 99 to 133 316 to 619 99 to 133 316 to 619 6 19Kto 16K 6 8 K to 17 6 K 1 0 to 8 2 4 22 K to 6 19 K 21 5 K to 34 8 K 51 1 K to 75 0 K 11 0 K to 16 2 K 2 87 K to 4 22 K 7 50 K to 14 7 K 162 K to 348 K...

Page 160: ... 0 0160 2260 8 15 0 0160 2261 9 16 0 0160 2262 0 18 0 0160 2263 1 20 0 0160 2264 2 22 0 0160 2265 3 24 0 0160 2266 4 Type Dipped Mica Range 27 to 680 pF Tolerance f5 Value pF EP Part Number CD 27 0160 2306 3 30 0160 2199 2 33 0160 2150 5 36 0160 2308 5 39 0140 0190 7 43 0160 2200 6 47 0160 2307 4 51 0160 2201 7 56 0140 0191 8 62 0140 0205 5 68 0140 0192 9 75 0160 2202 8 82 0140 0193 0 91 0160 2203...

Page 161: ...0698 3435 0 1 62K 0757 0428 1 42 2 0757 0316 6 1 78K 0757 0278 9 46 4 0698 4037 0 1 96K 0698 0083 8 51 1 0757 0394 0 2 15K 0698 0084 9 56 2 0757 0395 1 2 37K 0698 3150 6 61 9 0757 0276 7 2 61K 0698 0085 0 68 1 0757 0397 3 2 87K 0698 3151 7 75 0 0757 0398 4 3 16K 0757 0279 0 82 5 0757 0399 5 3 4813 0698 3152 8 90 9 0757 0400 9 3 83K 0698 3153 9 100 0757 0401 0 4 22K 0698 3154 0 110 0757 0402 1 4 64...

Page 162: ...38 3K 0698 3161 9 42 2K 0698 3450 9 46 4K 0698 3162 0 51 1K 0757 0458 7 56 2K 0757 0459 8 61 9K 0757 0460 1 68 1K 0757 0461 2 75 OK 0757 0462 3 82 5K 0757 0463 4 90 9K 0757 0464 5 A Value n HP Fart Number 1OOK 0757 0465 6 1lOK 0757 0466 7 121K 0757 0467 8 133K 0698 345 1 0 147K 0698 3452 1 162K 0757 0470 3 178K 0698 3243 8 196K 0698 3453 2 215K 0698 3454 3 237K 0698 3266 5 261K 0698 3455 4 287K 06...

Page 163: ...98 3396 2 1 47K 0757 1078 9 42 2 0698 3397 3 1 62K 0757 0873 0 46 4 0698 3398 4 1 78K 0698 0089 4 51 1 0757 1000 7 1 96K 0698 3407 6 56 2 0757 1001 8 2 15K 0698 3408 7 61 9 0757 1002 9 2 37K 0698 3409 8 68 1 0757 0794 4 2 61K 0698 0024 7 75 0 0757 0795 5 2 87K 0698 3101 7 82 5 0757 0796 6 3 16K 0698 3410 1 90 0 0757 0797 7 3 48K 0698 3411 2 100 0757 0198 2 3 83K 0698 3412 3 110 0757 0798 8 4 22K 0...

Page 164: ... 0698 3416 7 215K 0757 0127 7 0698 3417 8 237K 0698 3424 7 0698 3418 9 261K 0757 0064 1 0698 3103 9 287K 0757 0154 0 0698 3419 0 316K 0698 3425 8 0698 3420 3 348K 0757 0195 9 0698 342 1 4 383K 0757 0133 5 0698 3422 5 422K 0757 0134 6 0698 3423 6 464K 0698 3426 9 0757 0853 6 511K 0757 0135 7 0757 0854 7 562K 0757 0868 3 0757 0309 7 619K 0757 0136 8 0757 0855 8 681K 0757 0869 4 0757 0856 9 750K 0757...

Page 165: ...fix 3001A and below RF Section A8 Rectifier Al7 Positive Regulator A 18 Negative Regulator Description The 15 Vdc power supply is adjusted for the IF Display Section and the 22 Vdc and 20 Vdc power supplies are adjusted for the RF Section All other low voltage supplies are measured to ensure that they are within tolerance Figure 3 1 Low Voltage Power Supply Adjustments Setup Equipment Digital Volt...

Page 166: ...be lit See Figure 3 2 or Figure 3 3 for the location of AlABDSl Note Use Figure 3 2 for IF Display Sections with serial number prefix 3001A and below Use Figure 3 3 for IF Display Sections with serial numbers 3004A and above 3 Verify that the 15 V indicator AlAGDSl yellow LED is lit 4 Connect the DVM to AlA6TP3 on the IF Display Section The DVM indication should be 15 000 fO O1O V dc If the voltag...

Page 167: ...F Display Sections with serial number prefix 3001A and below indicator AlA7DS2 is a 100 V indicator 8 Connect the DVM to AlA7TP3 The DVM indication should be 120 0 f3 0 V dc The 120 V supply is referenced to the 15 V supply therefore if the 120 V supply is out of tolerance a circuit malfunction is indicated Note On IF Display Sections with serial number prefix 3001A and below the DVM indication sh...

Page 168: ...n the value of A8R6 increases the voltage at A8TPl Refer to Ihble 3 3 for the acceptable range of values and corresponding HP part numbers for A8R6 and to Figure 3 4 for the location of A8R6 13 Verify that the 20 V indicator A17DS2 yellow LED is lit 14 Connect the DVM to A17TP4 Adjust A17R50 20 V ADJ for a DVM indication of 20 000 fO OO1 V dc 15 Verify that the 12 V indicator A17DS4 yellow LED is ...

Page 169: ......

Page 170: ...ustments 24 Connect the DVM to A18TP4 The DVM indication should be 10 0 3 0 1 V dc The 10 V supply is referenced to the 20 V supply therefore if the 10 V supply is out of tolerance a circuit malfunction is indicated 3 30 Adjustments ...

Page 171: ... remove the AlA High Voltage Assembly from the instrument Do not disconnect the CRT s post accelerator cable the CRT can hold a 18 kV dc charge for several days If for any reason the AlA High Voltage Assembly or the postaccelerator cable must be removed refer to Discharge Procedure for High Voltage and CRT at the end of this adjustment procedure A 1OOO l divider probe is used to measure the CRT ca...

Page 172: ... Warning Do not attempt to measure the CRT filament voltage directly The filament voltage is referenced to the high voltage cathode and can only be measured safely with a special high voltage true rms voltmeter and probe 1 Set the spectrum analyzer LINE switch to STANDBY 2 Remove the top cover from the IF Display Section and connect the equipment as shown in Figure 3 5 and described in the followi...

Page 173: ... step 7 by the DVM indication in step 5 This gives the calibration factor needed to compensate for high voltage probe error Calibration Factor 9 Disconnect the high voltage probe from AlA7TP3 Set the spectrum analyzer LINE switch to STANDBY Remove the ac line cord from both instrument sections The MAINS power on indicator AlASDSl red LED should be completely off before proceeding with this procedu...

Page 174: ... lotor L o b e I AlA3TP3 H V T P AlA3TP5 Figure 3 7 Location of Label and Test Point 13 Reconnect ac line cords to both instrument sections Set the spectrum analyzer LINE switch to ON 14 Wait approximately 30 seconds for the dc regulator circuits to stabilize 15 Adjust AlA6R32 HV ADJ for a DVM indication equal to the calibration factor calculated in step 8 times the voltage labeled on the top of A...

Page 175: ...ntrol Assembly from the IF Display Section and install in its place the Display Adjustment Board HP part number 85662 60088 Set the switch on the Display Adjustment Board in the down position This applies approximately 2 7 V dc to the front panel INTENSITY control 23 Connect a calibrated 1O l divider probe to the oscilloscope Channel 1 input 24 On the oscilloscope press CRECALL ml to perform a sof...

Page 176: ...and off If the spot is always on decrease the value of AlA2R9 If the spot is always off increase the value of AlA2R9 Refer to ble 3 3 for the acceptable range of values and to Table 3 4 for HP part numbers Refer to Figure 3 8 for the location of AlA2R9 R35 R5 R36 I N T I NT ASTIG L I M I T G A I N R9 I I Figure 3 8 Location of AlA Components 32 Using a non metallic alignment tool center the front ...

Page 177: ...t visible 37 Adjust AlA4R7 POS AlA5R7 POS and if necessary the function generator dc offsets for a full screen illumination 38 Set the front panel INTENSITY control fully counter clockwise and if it is not sealed adjust AlA2R5 INT GAIN fully clockwise Adjust AlA2R35 INT LIMIT just below the threshold at which the display illumination becomes visible 39 Slowly adjust the front panel INTENSITY contr...

Page 178: ...e b Set the LINE switch to STANDBY c Increase the value of AlA2R9 d Return to step 34 Note Maximum CRT life expectancy is obtained when the peak to peak voltage at AlA3TP5 is as large as possible with the INTENSITY control set fully clockwise The display illumination must fully disappear with the INTENSITY control set fully counter clockwise r u n n i n g 1 0 0 V dlv 4 F i __ 0 0 0 0 0 0 s 5 0 0 u...

Page 179: ...kV dc charge for several days if the post accelerator cable is improperly disconnected Warning Do not handle the AlA High Voltage Regulator Assembly or AlAl 1 High Voltage Multiplier until the following high voltage discharge procedure has been performed 1 Set the spectrum analyzer s LINE switch to STANDBY remove the ac line cords and remove the AlA High Voltage Regulator safety cover Warning With...

Page 180: ... the AlA High Voltage Regulator Assembly 6 Connect the jumper wire from chassis ground to the black wire coming from the AlAll High Voltage Multiplier at the wire s connection to AlASTl AIA3 H i g h V o l t a g e w21 AlAl 1 R e g u l a t o r AlA3T II AlA3Tl AlA Figure 3 11 Discharging the CRT Post Accelerator Cable 7 Remove all jumper wires The AlA High Voltage Regulator AlAll High Voltage Multipl...

Page 181: ...A High Voltage Regulator Assembly from the instrument Do not disconnect the CRT s post accelerator cable the CRT can hold a 9500 V dc charge for several days If for any reason the AlA High Voltage Assembly or the postaccelerator cable must be removed refer to Discharge Procedure for High Voltage and CRT at the end of this adjustment procedure A 1OOO l divider probe is used to measure the CRT catho...

Page 182: ...tage true rms voltmeter and probe 1 Set the spectrum analyzer LINE switch to STANDBY 2 Remove the top cover from the IF Display Section and connect the equipment as shown in Figure 3 12 DIGITAL VOLTETER cm SPECTRUM ANALYZER Figure 3 12 High Voltage Adjustment Setup 3 Set the DVM to the 1OOV range and connect the DVM to AlA7TP3 120V without the high voltage probe See Figure 3 13 Note The accuracy o...

Page 183: ...pensate for high voltage probe error Calibration Factor 9 Disconnect the high voltage probe from AlA7TP3 Set the spectrum analyzer LINE switch to STANDBY Remove the ac line cord from both instrument sections Warning The MAINS power on indicator AlASDSl red LED should be completely off before proceeding with this procedure See Figure 3 13 The indicator will remain lit for several seconds after the ...

Page 184: ...int AlA3Al L A B E L AlA3TPZA Figure 3 14 Location AlA3TPZA AlA Label and Test Point 13 Reconnect ac line cords to both instrument sections Set the LINE switch to ON 14 Wait approximately 30 seconds for the dc regulator circuits to stabilize 15 Adjust AlA6R103 HV ADJ for a DVM indication equal to the calibration factor calculated in step 8 times the voltage labeled on the top of the AlA3Al High Vo...

Page 185: ...Y Remove the ac line cord from each instrument section 20 Wait at least one minute for the MAINS power on indicator AlA8DSl red LED to go out completely before proceeding 21 Disconnect the high voltage probe from AlA3TP2A 22 Replace the cover on the AlA High Voltage Regulator Assembly 23 The High Voltage adjustments are now completed If the AlA assembly has been repaired or replaced perform adjust...

Page 186: ...an still be present which if contacted could cause serious personal injury 2 Obtain an electrician s screwdriver which has a thin blade at least eight inches long The handle of the screwdriver must be made of an insulating material 3 Connect one end of a jumper wire made of insulated wire and two alligator clips to the blade of the screwdriver Connect the other end of the jumper wire to the metal ...

Page 187: ...ost Accelerator Cable Note A small bracket and screw secure the AlA High Voltage Regulator Assembly to the AlAlO Display Motherboard Assembly The bottom cover of the IF Display Section must be removed to gain access to this screw prior to removal of the AlA High Voltage Regulator Assembly Adjustments 3 47 ...

Page 188: ...when a major repair has been performed in the display section for example replacement or repair of the AlA Z Axis Amplifier AlA X Deflection Amplifier or AlA Y Deflection Amplifier assemblies For routine maintenance CRT replacement or minor repairs only adjustment procedure 4 Final Display Adjustments needs to be performed Be sure not to allow a high intensity spot to remain on the spectrum analyz...

Page 189: ...ope rear panel PROBE COMPENSATION AC CALIBRATOR OUTPUT connector Press AUTO SCALE Adjust the channel 4 probe for an optimum square wave display on the oscilloscope Note Each probe is now compensated for the oscilloscope input to which it is connected Do not interchange probes without recompensating 8 Connect the channel 1 1O l divider probe to AlA4E1 and the channel 4 probe to AlA4E2 as shown in F...

Page 190: ... Waveform pulse Frequency FRQ 200 kHz Width WID 250 ns Amplitude AMP 2 00 V Offset OFS OOO mV Disable off OUTPUT enabled 11 Connect the output of the pulse function generator to Jl X input on the Display Adjustment PC board in the A3A2 slot as shown in Figure 3 16 Note The pulse function generator output must be terminated with 50 ohms Use a BNC tee a 500 termination and a BNC female to SMB female...

Page 191: ...waveforms should be superimposed on the oscilloscope display as shown in Figure 3 19 If necessary adjust AlA4R7 X POSN and AlA4R27 X GAIN for a centered display of at least four vertical divisions See Figure 3 18 for the location of the adjustments hp s t o p p e d t mote l i s t e n 1 0 0 Vfdtv 1 0 0 V div I I 10 00 1 d c I _ _ 8 _ I 1 2 5 0 0 0 s 1 2 5 0 0 0 s 3 7 5 0 0 0 ns 5 0 0 ns dtv 1 f 25 ...

Page 192: ...m overshoot and minimum rise and fall times of the composite X deflection waveform See Figure 3 18 for the location of the adjustments Note Always adjust AlA4ClO and AlA4Cll in approximately equal amounts Do not adjust one to its minimum value and the other to its maximum value 18 Use the oscilloscope m markers to measure the risetime falltime and percent overshoot of the composite Xdefection wave...

Page 193: ...nse of 21 Disconnect the oscilloscope channel 4 probe from the spectrum Control Gate Z analyzer Connect the oscilloscope channel 1 probe to AlA2TP2 Amplifler to BLANK and connect the probe ground lead to chassis ground Input 22 On the oscilloscope press RECALL CLEAR to perform a soft reset 23 Press CHAN CHHNEL 1 on more preset probe and use the front panel knob to set the probe to lO OO l Press mo...

Page 194: ...on the oscilloscope The pulse should be 55V peak to peak 28 Set the oscilloscope controls as follows Press m Channel 1 on amplitude scale 8 0 V div Press m 29 Adjust AlA4R7 X POS and AlA5R7 Y POS to either extreme to position the CRT beam off screen to prevent possible damage to the CRT phosphor If it is not sealed adjust AlA2R5 INT GAIN fully clockwise 30 Adjust the spectrum analyzer front panel ...

Page 195: ... less than 5 approximately 0 4 divisions 33 Set the spectrum analyzer LINE switch to STANDBY and center potentiometers AlA4R7 X POSN and AlA5R7 Y POSN 34 Disconnect the oscilloscope channel 1 probe from the spectrum analyzer Remove the Display Adjustment PC board from the A3A2 slot and reinstall the A3A2 Intensity Control Assembly Replace the A3 Section cover and cables 35 Perform Adjustment Proce...

Page 196: ...tical characteristics These preliminary adjustments are necessary only after replacement or repair of the AlA X Y Z Axis Amplifier Assembly For routine maintenance CRT replacement or minor repairs only Adjustment Procedure 4 Final Display Adjustments needs to be performed Be sure not to allow a fixed spot of high intensity to remain on the spectrum analyzer CRT A high intensity spot may permanentl...

Page 197: ...scope rear panel PROBE COMPENSATION AC CALIBRATOR OUTPUT connector Press AUTO SCALE Adjust the channel 4 probe for an optimum square wave display on the oscilloscope Note Each probe is now compensated for the oscilloscope input to which it is connected Do not interchange probes without recompensating 8 Connect the channel 1 1O l divider probe to AlA2TP204 and the channel 4 probe to AlA2TP205 as sh...

Page 198: ...Frequency FRQ 200 kHz Width WID 250 ns Amplitude AMP 2 00 V Offset OFS O OOO mV Disable off OUTPUT enabled 11 Connect the output of the pulse function generator to Jl X input on the Display Adjustment PC board in the A3A2 slot as shown in Figure 3 23 Note The pulse function generator output must be terminated with 50 ohms Use a BNC tee a 500 termination and a BNC female to SMB female adapter Insta...

Page 199: ...and X deflection waveforms should be superimposed on the oscilloscope display as shown in Figure 3 26 If necessary adjust AlA2R227 X POSN and AlA2R220 X GAIN for a centered display of at least four vertical divisions See Figure 3 25 for the location of the adjustments _ _ i I 10 0 V diV T I Y j i __ _ _ 1 _ i 1 2 5 0 0 0 ns 1 2 5 0 0 0 s 5 0 0 ns div 3 7 5 0 0 0 ns 1 f 25 00 v Figure 3 26 X and X ...

Page 200: ...ise and fall times of the composite Xdeflection waveform Note Always adjust AlA2C204 and AlA2C209 in approximately equal amounts Do not adjust one to its minimum value and the other to its maximum value 18 Use the oscilloscope Cntav markers to measure the risetime falltime and percent overshoot of the composite Xdefection waveform Rise and fall times should both be less than approximately 65 ns be...

Page 201: ... using R127 R120 R117 C104 and C109 respectively Press 1 amplitude scale 20 0 V div offset 45 0000 V Press I time scale 50 0 ns div delay 125 000 ns Press TRIG level 50 00000 V Press jjj connect dots on Press SHOW Connect the output of the Pulse Function Generator to 53 Z input on the Display Adjustment PC Board in the A3A2 slot Set the board s switch to the down position Note The pulse function g...

Page 202: ...of the pulse waveform 32 Use the oscilloscope Intav markers to measure the risetime falltime and percent overshoot of the pulse waveform Rise and falltimes should be less than 50 ns and 90 ns respectively Overshoot on the rise should be less than 5 approximately 0 4 divisions 33 Set the spectrum analyzer LINE switch to STANDBY 34 Disconnect the oscilloscope channel 1 probe from the spectrum analyz...

Page 203: ...t adjust the following potentiometers and precision variable capacitors on the AlA Z Axis Amplifier AlA X Axis Amplifier or AlA Y Axis Amplifier Assemblies AlA2R36 INT LIMIT AlA2R22 HF GAIN AlABClO AlA4R28 HF GAIN AlA4C10 AlA4Cl1 AlA5R28 HF GAIN AlA5C10 or AlA5Cll These components are adjusted in Adjustment Procedure 2 High Voltage Adjustments SN 3001A and Below and Adjustment Procedure 3 Prelimin...

Page 204: ... focus of annotation short vectors 6 Adjust AlA2R31 ORTHO the front panel ALIGN control and AlA2R32 PATT to optimize the orientation and appearance of the rectangular graticule pattern on the CRT display 7 Repeat steps 4 through 6 as needed to optimize overall display focus and appearance PZN R 2 7 G A I N AlA4 AlA5 R 3 1 R 3 2 R36 R 3 0 O R T H O PATT ASTIG F O C U S G A I N AlA Figure 3 30 Locat...

Page 205: ...Voltage Adjustment SN 3004A and Above should be performed prior to performing the following adjustment procedure 1 Connect the equipment as shown in Figure 3 31 Figure 3 31 Final Display Adjustments Setup 2 Set the photometer probe to NORMAL Press POWER on the photometer to turn it on and allow 30 minutes warm up Zero the photometer according to the manufacturer s instructions 3 With the spectrum ...

Page 206: ...LIM fully counterclockwise AlA R517 ASTIG centered Front panel INTENSITY fully counterclockwise Front panel FOCUS centered Front panel ALIGN centered 4 Set the spectrum analyzer s LINE switch to ON and wait at least 5 minutes to allow the CRT and high voltage circuits to warm up 5 Set the front panel INTENSITY control fully counterclockwise and adjust AlA2R516 INT LIM until the display is just vis...

Page 207: ...ghtly trim the top and bottom of the photometer probe s hood so that it will fit flush against the glass RF1 filter If a standard J 16 photometer is used instead of metric option 02 adjust AlA2R319 for a photometer reading of 23 5 fl foot lamberts 12 Set the spectrum analyzer LINE switch to STANDBY and then back to ON The spectrum analyzer power up annotation should be visible on the CRT display T...

Page 208: ...st AlA2R512 ORTHO and the front panel ALIGN control to optimize the orientation and appearance of the rectangular graticule pattern on the CRT display 18 Repeat steps 13 through 17 as needed to optimize overall display focus and appearance 3 66 Adjustments ...

Page 209: ...checked and adjusted if necessary then the A4A3 Log Amplifier Filter is set for center frequency by injecting a signal and adjusting the bandpass filter center adjustment for maximum DVM indication The bandpass filter amplitude is adjusted by monitoring the output of the filter control line shorted and not shorted to the 15V supply Next log fidelity gain and offset of the log curve is adjusted by ...

Page 210: ...d DVM ground to the IF casting Connect the frequency synthesizer to the RF INPUT Key in cm 80 MHz and c 1 86 98 dBm The frequency synthesizer provides a 5OQ load to the spectrum analyzer RF INPUT 5 Check A4A2R79 ZERO for a DVM indication of 0 0000 f0 0005 V dc See Figure 3 34 for location of adjustment If A4A2R79 ZERO requires adjustment perform Adjustment Procedure 6 Video Processor Adjustment be...

Page 211: ...67 AMPTD for DVM indication the same as that noted in step 9 f0 0005 V dc See Figure 3 34 for location of adjustment If unable to adjust A4A3R67 AMPTD for proper indication increase or decrease value of A4A3R66 If A4A3R67 is fully counter clockwise increase the value of A4A3R66 Refer to Ihble 3 3 for range of values 12 Repeat steps 9 through 11 until DVM indication is the same f0 0005 V dc with A4...

Page 212: ...ml ENTER dB DIv q This disables the IF step gains 23 Decrease the frequency synthesizer output level 10 dB Press REFERENCE LEVEL 0 dBm and adjust the frequency synthesizer output level for a DVM indication of 1 00 f OO1 Vdc 24 Verify that attenuator is set at 10 dB Decrease the frequency synthesizer output level by 10 dB Press JEFERENCE LEVEL 60 dB 25 Adjust A4A3R83 LGlO for DVM indication of 1 00...

Page 213: ...The offsets and gains on the A4Al Video Processor are adjusted for proper levels using a DVM cd 0 1OdB STEP ATTENUATOR Figure 3 35 Video Processor Adjustments Setup Equipment Digital Voltmeter DVM HP 3456A 10 dB Step Attenuator HP 355D Note The voltage at A4AlTP3 may drift noticeably with temperature during this adjustment Allow the A4Al Video Processor to warm up at least one half hour prior to a...

Page 214: ... O A4Al Figure 3 36 Location of Video Processor Adjustments 11 Connect the DVM to A4AlTP3 12 Set the step attenuator to 120 dB 13 Adjust A4AlR32 ZERO for a DVM indication of 0 000 fO OO1 Vdc 14 Set the step attenuator to 0 dB 15 Adjust A4AlR36 FS for DVM indication of 2 000 f 0 001 Vdc 16 Repeat steps 12 through 15 until no further adjustments are required LOG Offset Adjust 17 Set step attenuator ...

Page 215: ...er than the indication recorded in step 19 If not readjust A4AlR2 LG OS 24 Decrease reference level to 90 dBm using the step key 25 DVM indication should be 0 400 ho 004 V dc greater than the indication recorded in step 19 If not readjust A4AlR2 LG OS 26 Repeat steps 17 through 25 until no further adjustments are required Adjustments 3 75 ...

Page 216: ... and symmetry Four crystal filter bypass networks are required for alignment of the filter stages See Figure 3 109 or information concerning the bypass networks A stable 21 4 MHz signal is then applied to the IF section of the instrument from a frequency synthesizer Each of the first four stages of the 3 MHz Bandwidth Filter is peaked in a 10 Hz bandwidth using an oscilloscope display The final st...

Page 217: ...ER FREQUENCY 100 MHz FREQUENCY SPA I s 10 kHz BW 1 kHz and press LIN pushbutton Press REFERENCE LEVEL and adjust reference level using step keys and front panel knob to place signal peak near top CRT graticule line On A4A7 3 MHz Bandwidth Filter Assembly connect crystal filter bypass networks between the two test points above C41 SYM C32 SYM C23 SYM and Cl4 SYM See Figure 3 38 for the location of ...

Page 218: ...al is nulled and adjusted for best symmetry See Figure 3 38 for location of adjustments 13 Remove crystal filter bypass network near C32 SYM 14 Adjust A4A7C33 CTR for minimum amplitude of the displayed signal peak Adjust A4A7C32 SYM for best symmetry of the displayed signal Repeat adjustments to ensure that signal is nulled and adjusted for best symmetry See Figure 3 38 for location of adjustments...

Page 219: ...uency synthesizer for 21 400 MHz at an amplitude level of 25 0 dBm 21 Disconnect cable 97 white violet from A4A8Jl and connect 2 2 Set the oscilloscope following Settings output of the frequency synthesizer to A4A8Jl using BNC to SMB snap on cable Press ICHANl Channel 1 on probe 1O l amplitude scale 50 mV div coupling ac Channel 4 on probe 1O l amplitude scale 50 mV div coupling ac Press m EDGE TR...

Page 220: ...ak to peak signal on the oscilloscope channel 4 display See Figure 3 39 for location of adjustment If unable to achieve a peak in signal amplitude increase or decrease value of A4A7C30 Refer to Table 3 3 for range of values 32 Disconnect the oscilloscope channel 4 probe from A4A7TPl 33 Adjust frequency synthesizer output frequency to peak the oscilloscope channel 1 display 34 On the spectrum analy...

Page 221: ...s the reference level set in step 39 See Figure 3 38 for location of 10 Hz AMPTD adjusts 43 Repeat steps 37 through 42 until no further adjustment is required Note Factory select component A4A7R60 sets the overall gain of the A4A7 3 MHz Bandwidth Filter and is selected as required in Adjustment Procedure 10 Step Gain and 18 4 MHz Local Oscillator Adjustments This procedure should be performed if t...

Page 222: ...tive pole Next the LC filters and the crystal filter poles on the A4A8 Attenuator Bandwidth Filter are adjusted in the same manner as on the A4A4 Bandwidth Filter Last the 10 dB and 20 dB attenuators on the A4A8 Attenuator Bandwidth Filter are adjusted for the proper amount of attenuation This is done by connecting the CAL OUTPUT signal to the RF INPUT through two step attenuators keying in the ne...

Page 223: ...tinuing Connect spectrum analyzer CAL OUTPUT to RF INPUT through 1 dB and 10 dB step attenuators as shown in Figure 3 40 Set step attenuators to 0 dB 6 Disconnect cable 97 white violet from A4A8Jl and connect to cable A4A6J 1 7 Key in CENTER FREQ 100 MHz CREs 100 kHz CFREQUENCY SPAN 200 kHz and press LIN pushbutton 8 Press REFERENCE LEVEL and adjust front panel knob to set signal peak approximatel...

Page 224: ...etry of signal See Figure 3 42 for location of adjustments If unable to adjust SYM for satisfactory signal symmetry increase or decrease value of A4A4ClO Refer to Table 3 3 for range of values A4A4 Bandwidt h Fi I ter L Figure 3 42 A4A4 Location of A4A4 21 4 MHz Crystal Filter Adjustments Remove crystal filter bypass network from between A4A4TP4 and A4A4TP5 Adjust A4A4C74 CTR to center signal on c...

Page 225: ...ect cable to A4A8Jl Reconnect cable 89 gray white to A4A6Jl Key in jj 100 kHz and FREQUENCY SPAN 200 kHz Press CREFERENCE LEVEL_ and adjust DATA knob to place signal peak approximately two divisions down from the top graticule line Adjust A4A8C32 LC CTR and A4A8C46 LC CTR for maximum MARKER level as indicated by CRT annotation See Figure 3 43 for location of adjustments If unable to adjust A4ASC32...

Page 226: ...le to adjust A4A8C42 SYM for satisfactory signal symmetry increase or decrease value of A4A8C43 Refer to Iable 3 3 for range of values At A4A8 tenuator Bandwidth Filter A4A8 Figure 3 44 Location of A4A8 21 4 MHz Crystal Filter Adjustments 38 Remove crystal filter bypass network from between A4A8TPl and A4A8TP2 39 Adjust A4A8C29 CTR to center signal on center graticule line Adjust A4A8C13 SYM for b...

Page 227: ...rform steps 1 through 12 Bandpass Filter Adjustments of Adjustment Procedure 5 Log Amplifier Adjustments and then check the amplitudes of the resolution bandwidths from 3 kHz through 3 MHz again If the amplitudes of the 3 kHz 10 kHz and 30 kHz resolution bandwidths are still not within f0 4 dB of the 1 MHz resolution bandwidth change the value of factory select component A4A4R35 or A4A4R3 An incre...

Page 228: ...connect cable 97 to A4A8Jl and reconnect cable 89 to A4A6Jl Set spectrum analyzer LINE switch to ON Press 2 22 Key in CENTER FREQUENCY 100 MHz j 1 100 kHz FREQUENCY SPANS 1 MHz m 0 dB LOG ENTER dB DIvj 2 dB Short A4A8TP6 to ground Adjust A4A8C66 LC DIP for minimum amplitude of signal peak See Figure 3 43 for location of adjustment Key in MARKER PEAK SEARCH MARKER Ia and then press MARKER PEAK SEAR...

Page 229: ...nnect the spectrum analyzer CAL OUTPUT to the RF INPUT 4 On the spectrum analyzer key in the following settings CENTER FREQUENCY 100 MHz 5 On the spectrum analyzer key in SHIFT RES BW A AUTO REFERENCE LEVEL and use the DATA knob to position the signal peak near the reference level top graticule line 6 On the spectrum analyzer key in PEAK SEARCH MARKER and press J several times to position the seco...

Page 230: ...eak near the reference level top graticule line 14 On the spectrum analyzer key in PEAK SEARCH MARKER and press several times to position the second marker at the leftmost graticule line 15 Adjust A4A9R61 1 MHz for a MARKER A indication of 3 00 dB f0 05 dB 16 On the spectrum analyzer press m several times to position the second marker at the rightmost graticule line Then press sTopI and use the DA...

Page 231: ... dB 27 Repeat steps 24 through 26 as necessary until no further adjustment is required 9 3 dB Bandwidth Adjustments Note The 100 kHz 3 dB bandwidth is set with factory select components A4A8R30 A4A8R55 A4A4R16 and A4A4R60 If it is necessary to increase the 100 kHz 3 dB bandwidth increase the value of one or more of these factory select components The 30 kHz 3 dB bandwidth is set with factory selec...

Page 232: ...sition the second marker at the leftmost graticule line 39 Adjust A4A9R66 3 kHz for a MARKER A indication of 3 00 dB f0 05 dB 40 On the spectrum analyzer press Q several times to position the second marker at the rightmost graticule line Then press SToPI and use the DATA knob to adjust the centering of the displayed signal for a MARKER A indication of 3 00 dB f0 05 dB 41 On the spectrum analyzer k...

Page 233: ...lect components Refer to Table 3 3 for the acceptable range of values for A4A7R12lA4A7R13 A4A7R23 A4A7R24 A4A7R34lA4A7R35 A4A7R45lA4A7R46 A4A7R56lA4A7R57 A4A7R66 A4A7R68 A4A7R70 A4A7R72 A4A7R74 A4A7R76 A4A7R78 A4A7R80 A4A7R82 A4A7R84 A4A7R86 A4A7R88 A4A7R90 A4A7R92 A4A7R94 A4A7R96 A4A7R98 A4A7R100 A4A7R102 and A4A7R104 and to lhble 3 4 for HP part numbers Adjustments 3 93 ...

Page 234: ... the RF INPUT and keying in the REFERENCE LEVEL necessary to activate each of the gain steps while compensating for the increased gain with the step attenuators The 1 dB gain steps are checked in the same fashion as the 10 dB gain steps and then the variable gain is adjusted The 18 4 MHz oscillator frequency is adjusted to provide adequate adjustment range of front panel FREQ ZERO control and last...

Page 235: ...PUT to the RF INPUT On the spectrum analyzer key in j 1 8 and adjust the front panel AMPTD CAL control for a displayed signal level of 10 00 dBm On the spectrum analyzer key in jj 9 and adjust the front panel FREQ ZERO control for maximum amplitude of the displayed signal trace Connect DVM to A4A5TPl 1OVF If DVM indication is between 9 V dc and 10 0 V dc no adjustment is required If DVM indication...

Page 236: ...ecessary to achieve the proper adjustment range of A4A5 CAL adjustment See Figure 3 39 for the location of A4A7R60 Refer to Table 3 3 for range of values for A4A7R60 Connect CAL OUTPUT to RF INPUT through 10 dB step attenuator and 1 dB step attenuator Key in LOG CENTER dB DIvI 1 dB c 1 3 Hz and REFERENCE LEVEL 30 dBm Set step attenuators to 25 dB Key in MARKER A Signal trace should be at the cente...

Page 237: ...in REFERENCE LEVEL 70 dBm Set step attenuators to 65 dB 26 Adjust A4A5R54 SG20 2 for MKR A level of OO dB See Figure 3 48 for location of adjustment 1 dB Gain Step Checks 27 Key in CREFERENCE LEVEL 19 9 dBm Set step attenuators to 15 dB Press MARKER Ia twice to establish a new reference 28 Key in REFERENCE LEVEL 17 9 dBm Set step attenuators to 13 dB 29 MKR A level as indicated by CRT annotation s...

Page 238: ... on CRT See Figure 3 49 for location of adjustment A4A5 S T E P G A I N R2 Cl0 F R E Q R51 lOV A D J RlO Z E R O C O A R S E C9 V R A4A5 Figure 3 49 Location of l dB Gain Step 18 4 MHz LO and 1OV Adjustments 41 Key in FREQUENCY SPAN 1 kHz l j j 100 Hz and PEAK SEARCH a 42 Adjust front panel FREQ ZERO control fully clockwise Press CPEAK SEARCH Signal should move at least 60 Hz away from center CRT ...

Page 239: ... Local Oscillator Adjustments Note Factory select component A4A7R60 affects the adjustment of A4A6AlR29 WIDE GAIN If the value of A4A7R60 is changed perform Adjustment Procedure 11 Down Up Converter Adjustments Adjustments 3 99 ...

Page 240: ...ing a spectrum analyzer with an active probe The 18 4 MHz Local Oscillator and all harmonics are then adjusted for minimum amplitude HP 55024A HIGH FREQUENCY PROBE Equipment Procedure SPECTRW I ANALYZER MA TPJ SPECTRUM ANALYZER PROBE PWER SUPPLY Figure 3 50 Down Up Converter Adjustments Setup Spectrum Analyzer HP 8566B Active Probe HP 85024A Probe Power Supply HP 1122A Note Adjustment A4A6AlR29 WI...

Page 241: ...trol for a displayed signal level of 10 00 dBm 5 On the spectrum analyzer key in ml 9 and adjust the front panel FREQ ZERO control for maximum amplitude of the displayed signal A4A6 D O W N U P C O N V E R T E R A4A6 Figure 3 51 Location of Down Up Converter Adjustments Down Converter Gain Adjustment Note Perform steps 6 through 15 if the A4A6 Down Up Converter Assembly has been repaired or if fac...

Page 242: ...al level at A4A6A2TP4 measured in step 10 If not change the value of factory select resistor A4A6A2R33 A 10 decrease in the value of A4A6A2R33 increases the signal level at A4A6A2Pl 9 by approximately 0 6 dB Refer to Table 3 3 for the acceptable range of values for A4A6A2R33 and to Table 3 4 for HP part numbers Set the spectrum analyzer LINE switch to STANDBY Remove A4A6 Down Up Converter Assembly...

Page 243: ... MHz signals on the second spectrum analyzer The level of the displayed 18 4 MHz signal should be below 10 dBm If A4A6AlC31 has insufficient adjustment range increase the value of factory select resistor A4A5RlO See Figure 3 49 for the location of A4A5RlO Refer to Ikble 3 3 for the acceptable range of values for A4A5RlO and to lkble 3 4 for HP part numbers Adjustments 3 103 ...

Page 244: ...ot in STANDBY for at least 72 hours immediately prior to oscillator adjustment to allow both the temperature and frequency of the 10 MHz Quartz Crystal Oscillator to stabilize Adjustment should not be attempted before the oscillator is allowed to reach its specified aging rate Failure to allow sufficient stabilization time could result in oscillator misadjustment The A22Al 10 MHz Quartz Crystal Os...

Page 245: ... turn off the CRT display while the spectrum analyzer is unattended and m my to turn the CRT back on 3 Connect the Cesium Beam Frequency Standard to the Frequency Counter rear panel TIMEBASE IN OUT connector as shown in Figure 3 52 T IMBASE FREQUENCY COUNTER IN OUT FREQUENCY STANDARD l9 Figure 3 52 10 MHz Frequency Standard Adjustments Setup 4 Disconnect the short jumper cable on the RF Section re...

Page 246: ...teps 3 through 7 recording the frequency of the 10 MHz Frequency Standard at the end of each 24 hour interval until the specified aging rate of 1 mHz day lX1O g day is achieved Reading 3 mHz Reading 4 mHz Reading 5 mHz Reading 6 mHz Reading 7 mHz Reading 8 mHz Reading 9 mHz Reading lo mHz Reading 11 mHz 11 Position the spectrum analyzer on its right side as shown in Figure 3 52 and remove the bott...

Page 247: ... FINE frequency adjustment has insufficient range center the adjustment and then adjust the COARSE frequency adjustment for a Frequency Counter indication of 0 00 Hz 16 On the Frequency Counter select a 10 second gate time by pressing GATE 10 C 1 The Frequency Counter should now display the difference between the frequency of the INPUT A signal and 10 0 MHz with a resolution of 0 001 Hz 1 mHz 17 W...

Page 248: ...andard 10 MHz with aging rate of ctlX1O lo HP 5061B Frequency Counter HP 5334A l3 Cables BNC cable 122 cm 48 in 2 required HP 10503A Procedure Note The spectrum analyzer must be ON continuously not in STANDBY for at least 72 hours immediately prior to oscillator adjustment to allow both the temperature and frequency of the oscillator to stabilize Adjustment should not be attempted before the oscil...

Page 249: ...is first applied to the RF Section Note The rear panel FREQ REFERENCE switch enables or disables the RF Section 20 Vdc switched supply which powers the oscillator circuits in the A22 10 MHz Frequency Standard This switch must be set to INT and the spectrum analyzer must be switched ON continuously not in STANDBY for at least 72 hours before adjusting the frequency of the A22 10 MHz Frequency Stand...

Page 250: ... ELECT ENTER TJEETj 10 ZTZZKJ 6 ELECT ENTER SELECT ENTER T h e Frequency Counter should now display the difference between the frequency of the INPUT A signal A22 10 MHz Frequency Standard and 10 0 MHz with a displayed resolution of 1 mHz 0 001 Hz Note 7 Wait at least two gate periods for the Frequency Counter to settle and record the frequency of the A22 10 MHz Frequency Standard as reading l Rea...

Page 251: ...oriented Record this shifted frequency of the A22 10 MHz Frequency Standard Reading 8 mHz Subtract the shifted frequency reading in step 11 from the last recorded frequency in step 10 This gives the frequency correction factor needed to adjust the A22 10 MHz Frequency Standard Frequency Correction Factor mHz On the Frequency Counter select a 1 second gate time by pressing GATE 1 GATE The Frequency...

Page 252: ...requency of the INPUT A signal and 10 0 MHz with a resolution of 0 001 Hz 1 mHz 16 Wait at least 2 gate periods for the Frequency Counter to settle and then adjust the FREQ ADJ capacitor on the A22A2 10 MHz Quartz Crystal Oscillator for a stable Frequency Counter indication of 0 000 Frequency Correction Factor fO O1O Hz 17 Replace the RF Section bottom cover and reconnect the short jumper cable be...

Page 253: ...voltages of the various sweep and span ramps The A20 Main Coil Driver Assembly is adjusted to set the two frequency end points of the YIG tuned oscillator Finally frequency span accuracy for YTO Spans 5 MHz is adjusted by adjusting the Sweep Attenuator gains on the Al6 Scan Generator Assembly and the 5 8 and 12 5 GHz Band Overlap adjustments on the A19 DAC Assembly Adjustments in this procedure af...

Page 254: ...s Setup 2 Set the spectrum analyzer LINE switch to ON 3 Key in iZTEiZGHz_ SWEEP TIME 500 ms 4 Connect the oscilloscope channel 1 probe to A16TP3 Scan Ramp Connect rear panel SWEEP TUNE OUT to the oscilloscope channel 2 input 5 Set the oscilloscope controls as follows Press CHAN Channel 1 on probe 1O l amplitude scale V div offset 3 5 V coupling d c Channel 2 off amplitude scale 500 mVldiv offset 1...

Page 255: ...NLIFT RECORDER OUTPUT Procedure 7 Set universal counter controls as follows Counter mode TIA B FILTER NORM 100 kHz FILTER NORM SEPKOM A COM A GATE TIME fully ccw Channel A Channel B Trigger Slope A in negative Trigger Slope B out positive TRIGGER LEVEL SENSITIVITY out AC DC DC ATTEN Xl X20 X20 8 Adjust universal counter channel A and channel B TRIGGER LEVEL controls as necessary to trigger both ch...

Page 256: ...st A16R67 SWEEP TIME adjustment for sweep ramp of 500 Adjustment Alternate ms duration not including dead time at beginning and end of Procedure each ramp as measured on the oscilloscope Aux Out Adjustment 11 Press 2 22 12 Connect the oscilloscope channel 1 to A16TP4 AUX OUT Display should be a stepped series of 4 sweep ramps similar to that shown in Figure 3 59 3 l 16 Adjustments ...

Page 257: ...ly Adjusted DC Levels Between Sweep Ramps 13 Adjust A16R68 AUX adjustment to align dc level of 3 dead time steps with upper dc level of each preceding sweep ramp Refer to Figure 3 59 and Figure 3 60 for typical display of proper and improper adjustment h s t o p p e d 1 2 0 0 V div offset 3 5 0 0 v 10 00 I dc j i i I i b 4 I 1_ I i _ _ _ _ _I __ t 11111 1 __ 1 _ 1 2 0 0 ms div 2 f 1 375 v Figure 3...

Page 258: ...ed Key in jj 2 and note change in stable DVM indication from previous step Adjust A16R75 Scan Width DAC OFFSET while alternating between 1 1 and RECALL_ 2 so that stable DVM indication varies less than 1 mVdc Connect DVM to A16TP8 and DVM ground to A16TP7 GND Key in C 1 3 and note stable DVM indication after sweep has completed Key in ZXiIiJ 4 and note change in stable DVM indication from previous...

Page 259: ...stable DVM indication from previous step h Adjust A19R41 25 GHz SPAN OFFSET while alternating between ZiiQ 1 and RECALL_ 3 so that stable DVM indication varies less than 3 mVdc i Key in ZZZiIQ 4 to set YTO Pretune DAC to 0 j After sweep has completed adjust A19R5 DC for stable DVM indication of 6 0000 f0 0005 Vdc k Key in Cm 5 to set YTO Pretune DAC to 4095 1 After sweep has completed adjust A19R2...

Page 260: ...nd note stable DVM indication after sweep has completed Key in RECALL 5 and note change in stable DVM indication from previous step Adjust A19R56 2 5 GHz SPAN OFFSET while alternating between RECALL_ 4 and m 5 so that stable DVM indication varies less than 1 mVdc Key in RECALL 4 and note stable DVM indication after sweep has completed Key in jj 6 and note change in stable DVM indication from previ...

Page 261: ...nts 25 Key in Cm 2 26 Adjust A20R25 6 15 GHz adjustment for frequency counter indication of 6150 0 fO l MHz allowing time for frequency counter display to settle 27 Repeat steps 23 through 26 several times until no further adjustments are necessary 28 Remove jumpers from between A20TP5 and A21TP2 and between A12TP2 and A12TP3 Reconnect cable 8 grey to AllJl 0 DET OUT Disconnect frequency counter f...

Page 262: ...nnect RF INPUT to locate LO feedthrough signal counterclockwise rotation of adjustment moves signal to right Repeat steps 32 through 33 until comb teeth are spaced two per division and aligned with CRT graticule lines every other comb tooth will align with a graticule line Key in CENTER FREQUENCYI 2 GHz FREQUENCY SPAN 100 MHz RES 30 KHz SAVE_ 1 CENTER SHIFT WJ 9 GHz m 2 ENTER FREQUENCY 2 GHz EQUEN...

Page 263: ...o front panel RF INPUT with low loss microwave test cable Set synthesized sweeper for output of 4000 000 MHz at 0 dBm 55 Signal should be visible at right side of CRT display Press PEAK SEARCH MARKER C 1 to place display marker on signal peak 56 Alternately press PEAK SEARCH and adjust A16R72 GAIN 1 for marker frequency of 4 000 00 GHz as indicated by display annotation 13 Sweep DAC and Main Coil ...

Page 264: ... SPAN slightly as necessary so that amplitude of displayed signal peak varies less than 3 dB over entire f50 MHz range bracketing band overlap point For HP 8566A set synthesized sweeper for output of 5 800 GHz at 0 dBm For HP 8566B set synthesized sweeper for output of 5 800 GHz at 0 dBm Key in START FREQ 5 55 GHz CsTopj 6 05 GHz REsBW_ 300 kHz Two separate signal peaks should be visible on displa...

Page 265: ...eps Readjust A19R43 25 GHz SPAN slightly as necessary so that amplitude of displayed signal peak varies less than 3 dB over entire flO0 MHz range bracketing band overlap point 74 Key in SHIFT PRESEL PEAK 75 Verify that jumper between A12TP2 and A12TP3 Lock Indicator Disable has been removed Replace RF Digital Section cover over Al2 through Al6 assemblies Adjustments 3 125 ...

Page 266: ...re Note Frequency Counter HP 5343A Spectrum Analyzer HP 8566B Precision Power Supply HP 6114A Adapters Adapter SMB snap on m m 1250 0672 Cables BNC to SMB Snap On Test Cable 2 required 85680 60093 The A7A2 100 MHz VCXO Assembly must be installed in the RF Section with all cover screws in place during this adjustment procedure 1 Position the spectrum analyzer on its right side as shown in Figure 3 ...

Page 267: ...A2J2 100 MHz OUT and connect the RF INPUT of the second spectrum analyzer to A7A2J2 using a BNC to SMB snap on test cable 5 Press 2 22GHz on the second spectrum analyzer and then set the controls as follows CENTER FREQUENCY 100 MHz FREQUENCY SPAN 3 kHz REFERENCE LEVEL 3 dBm RES BW 1kHz LOG SCALE 1 dB div TRACE A CLEAR WRITE TRACE B MAX HOLD 6 Adjust A7A2C4 100 MHz slowly through its full range whi...

Page 268: ...numbers for A7A2I 4 and to Figure 3 65 for the location of A7A2L4 Note If A7A2C4 100 MHz does not have sufficient adjustment range to tune the 100 MHz VCXO 300 Hz to 100 000300 MHz select a lower value for factory selected component A7A2C8 conversely select a higher value for A7A2C8 if A7A2C4 does not have sufficient range to tune the 100 MHz VCXO 300 Hz to 99 999700 MHz Refer to lhble 3 3 for the...

Page 269: ...or an output of 25 Vdc and connect the 25 Vdc output of the dc power supply to A7A2TPl TUNE 14 Verify that the frequency counter indication is greater than 100 0000 MHz If it is not repeat steps 3 through 13 15 Disconnect the dc power supply from A7A2TPl TUNE and reconnect the cable 83 gray orange to A7A2J2 100 MHz OUT 400 MHz output 16 Disconnect the cable 96 white blue from A7A3Jl 400 MHz IN Adj...

Page 270: ...el of the 400 MHz output signal is 10 dBm f2 dB If it is not note the amplitude and change the values of attenuator network resistors A7A2R67 A7A2R68 and A7A2R69 as necessary Iable 3 9 contains a list of attenuations in 1 dB steps and the corresponding values for the attenuator resistors to adjust the 400 MHz output power level to 10 dBm Refer to Table 3 10 for HP part numbers and to Figure 3 65 f...

Page 271: ...2 Set the controls of the second spectrum analyzer as follows CENTER FREQUENCY 400 MHz FREQUENCY SPAN 50 MHz REFERENCE LEVEL 7 dBm LOG SCALE 10 dB div RES BW 30 kHz VIDEO BW 10 kHz 23 Check for 10 MHz sidebands on the 400 MHz output signal at 390 MHz and 410 MHz If 10 MHz sidebands are visible they should be greater than 70 dB down 70 dBc from the power level of the 400 MHz output signal 24 Discon...

Page 272: ...50 0669 Cables BNC to SMB Test Cable service accessory 085680 60093 Procedure 1 Position the spectrum analyzer on its right side as shown in Figure 3 67 Remove the bottom cover of the RF Section 2 Connect the frequency counter s rear panel 10 MHz FREQ STD OUT connector to the RF Section s rear panel FREQ REFERENCE EXT connector See Figure 3 67 Set the RF Section s rear panel switch to EXT 3 Connec...

Page 273: ... 197 419355 MHz fl count 7 Connect the DVM to A7A4TPl TUNE test point 8 Adjust A7A4AlAlCl FREQ ADJ tuning slug for a DVM indication of 35 0 f0 5 Vdc Slightly loosen the hex locking nut before adjusting the FREQ ADJ tuning slug and tighten the nut after the appropriate voltage is set 9 Key in CENTER FREQUENCY 2100 000 MHz on the RF Section The frequency counter indication should be 177 500000 MHz f...

Page 274: ...negative lead to A7A4TPl TUNE test point 19 Adjust A7A4AlAlC5 PWR for an M N VCO output level of 0 0 dBm f 2 0 dB as indicated on the second spectrum analyzer display Refer to Figure 3 68 for the location of A7A4AlAlC5 PWR adjustment 20 Slowly reduce the output voltage of the dc power supply from 35 0 Vdc to 2 3 Vdc while monitoring the M N VCO output level displayed on the second spectrum analyze...

Page 275: ...O Loop Sampler IF amplifiers are then adjusted for correct output level and frequency response Equipment Spectrum Analyzer HP 8566B Synthesized Sweeper HP 8340A B Digitizing Oscilloscope HP 545OlA Power Meter Power Sensor HP 436A 8481A SMA m 50 ohm Termination 1810 0118 Adapters Type N m to APC 3 5 f Adapter 1250 1744 Adapter BNC to Alligator Clip 1250 1292 Cables Low loss Microwave Test Cable APC...

Page 276: ... a jumper between A12TP2 and A12TP3 LOCK INDICATOR DISABLE on the Al2 Front Panel Interface Assembly in the RF Section Connect a jumper between A21TP2 TUNE VOLTAGE and the RF Section chassis ground See Figure 3 70 5 Install the All YT 0 Loop Assembly in the Service Position by removing the three screws marked with the letter A securing the Al 1 YTO Loop Assembly in the RF Section Figure 3 71 shows...

Page 277: ... CIA Assembly See Figure 3 71 for the location of AllA7 8 Carefully unclip AllA from the YTO Loop cover allowing the cable s free end to be moved to one side 9 Connect the SMA male end of Wll to the COUPLED OUT connector of AllAl CIA Assembly Wll was removed from the YTO OUT connector in step 2 10 Connect a low loss microwave test cable to the RF INPUT of the second spectrum analyzer using a Type ...

Page 278: ...on the second spectrum analyzer and wait for the preselector peaking routine to complete On the second spectrum analyzer kes in LOG SCALE ENTER dB DIv 2 dB TRACE Ei CLEAR WRITE TRACE B j j k 1 On the spectrum analyzer DUT key in SWEEP SINGLE SWEEP TIME 200 set mj SWEEP CONT t A HARMONIC LOCK 1 message should appear on the CRT display of the spectrum analyzer DUT On the spectrum analyzer DUT key in...

Page 279: ...the lowest point in the TRACE B waveform does not change 25 On the spectrum analyzer DUT key in ISHIFT_ MKR REF LVL R to activate the Frequency Diagnostics function Six lines of numerical data should appear in the upper left corner of the spectrum analyzer CRT the top line is the 10 digit YTO Start Frequency ranging from 2 000 000 000 GHz to 6 200 000 000 GHz Note the currently selected YTO Start ...

Page 280: ...mi rigid coax cable W 11 from the COUPLED OUT connector of AllAl CIA Assembly and reconnect AllA to the AllAl CIA Assembly YTO Sampler 30 Remove the cover from AllA YTO Loop Sampler Assembly Adjustments Locate DRIVER MATCHING adjustments Al lA5Cl and Al lA5C2 SAMPLER DC test point AllA5TP1 and IF GAIN adjustment AllA5Rl These parts are indicated on the cover of the AllA YTO Loop Sampler Assembly a...

Page 281: ... AMPTD MKR on 34 Connect the RF OUTPUT of the synthesized sweeper to AllJ2 M N IN using a BNC to SMB snap on test cable 35 Use a BNC to alligator clip adapter to connect the oscilloscope Channel 1 input to the RF Section AllA5TPl test point and connect the Channel 1 ground to the All YTO Loop cover Connect the oscilloscope Channel 4 input to the synthesized sweeper rear panel NEG BLANKING output A...

Page 282: ...e press CaTav and turn on the voltage markers for the Channel 1 input Place one voltage marker at the level of the 160 MHz left and 210 MHz right markers and place the second voltage marker at the maximum voltage level of the displayed waveform as shown in Figure 3 74 The voltage level of the displayed waveform between the 160 MHz and 210 MHz markers should be a minimum of 0 50 Vdc lower than the ...

Page 283: ...he RF INPUT of the second spectrum analyzer to AllJ5 IF OUT 45 Set the controls of the second spectrum analyzer as follows START FREQUENCY 5 MHz STOP FREQUENCY 70 MHz REFERENCE LEVEL 10 dBm LOG SCALE 10 dB DIV RESOLUTION BW 300 kHz 46 The IF OUT fundamental and second harmonics should be visible at approximately 30 MHz and 60 MHz on the display of the second spectrum analyzer as shown in Figure 3 ...

Page 284: ...A5LlO 49 On the second spectrum analyzer press TRACE A c 1 TRACE B CLEAR WRITE 50 On the synthesized sweeper key in SHIFT Icw m to set the CW RES to 0 001 MHz Then use the ENTRY knob to gradually tune the synthesized sweeper up and down from the frequency set in step 41 tuning the IF OUT fundamental displayed on the second spectrum analyzer from 5 MHz to 70 MHz as shown in Figure 3 76 Figure 3 76 ...

Page 285: ...port Screw holding the All YTO Loop Assembly in the Service Position Grasp the two metal extractors on the All YTO Loop Assembly and slide the assembly back into the RF Section mating the two guide pins with the corresponding guide sleeves on the A23 Motherboard Assembly Replace the three screws marked with the letter A securing the All YTO Loop Assembly in the RF Section 54 Reconnect cable 8 gray...

Page 286: ... is measured with a spectrum analyzer Phase Lock Loop 2 PLU On the AlOA5 PLL2 VCO Assembly and A10A8 PLL2 Discriminator Assembly four interactive biasing adjustments are used to set the centering and tuning range of the PLL2 VCO PLL2 VCO biasing is adjusted by setting up proper voltage levels at AlOA8TP5 VCO TUNE and adjusting for corresponding PLL2 VCO frequencies at AlOA5J4 SCAN 1 1 MHz OUT If P...

Page 287: ...able 2 required service accessory 85680 60093 Procedure Phase Lock Loop 1 1 Set the spectrum analyzer LINE switch to STANDBY Turn the WJJ spectrum analyzer over to position the RF Section on top as shown in Figure 3 77 and remove the RF Section bottom cover PRECISIDR PWER SUPPLY DIBITAL VOLTMETER SYNTHESIZER LEVEL I I I I SPECTRUl ANALYZER UPOmR SUPPLY SPECTRUM ANIALYZER Figure 3 77 20 30 PLL Adju...

Page 288: ...Y SPAN 50 kHz REFERENCE LEVEL 0 dBm LOG SCALE 10 dB DIV VIDEO BW 300 Hz 8 Connect the active probe tip to the lead of A10AlL7 closest to AlOAlC22 as indicated in Figure 3 78 The 20 kHz signal from the 40 kHz LPF should be visible on the display of the second spectrum analyzer 9 Press MARKER PEAK SEARCH MKR REF LVL on the second spectrum analyzer to position the peak of the 20 kHz signal at the top...

Page 289: ...er from AlOAl PLLl VCO Assembly 14 Install AlOAl PLLl VCO Assembly in the RF Section using an extender board Reconnect the cable 1 brown to AlOA5J5 SCAN l 5 MHz OUT and the cable 5 green to AlOAlJ2 OUT 20 30 MHz 15 Set the RF Section LINE switch to ON and key in Z Zi FREQUENCY SPAN 0 HZ 16 Disconnect the active probe from the RF INPUT of the second spectrum analyzer 17 Press ZZiZ on the second spe...

Page 290: ... 308 MHz since the metal shield increases the PLLl VCO frequency approximately 2 MHz when reinstalled 23 Set the dc power supply for an output of 4 0 f 0 1 Vdc 24 Press MARKER PEAK SEARCH on the second spectrum analyzer The frequency of the PLLl VCO output signal should drop below 200 MHz and the power level should be at least 7 dBm as indicated by the marker on the display of the second spectrum ...

Page 291: ... 3 78 for the location of AlOA3L3 170 MHz NULL adjustment On the synthesized sweeper key in Icw 325 3 MHz Adjust AlOA3Lll 165 MHz NULL to minimize the amplitude of the 165 MHz signal displayed on the second spectrum analyzer Refer to Figure 3 78 for the location of AlOA3Lll 165 MHz NULL adjustment On the synthesized sweeper key in Icw 320 3 MHz Adjust AlOA3L12 160 MHz NULL to minimize the amplitud...

Page 292: ...ress CENTER FREQUENCY 163 MHz TRACE A j 1 on the second spectrum analyzer Allow the synthesized sweeper to tune slowly from 320 3 MHz to 326 3 MHz noting the corresponding 160 MHz to 166 MHz signal on the display of the second spectrum analyzer Note The corresponding 160 MHz to 166 MHz signal might be below the displayed noise level on the second spectrum analyzer 46 On the second spectrum analyze...

Page 293: ...tector Assembly from the RF Section 2 Set the RF Section LINE switch to ON and press ZZQ 3 Disconnect the cable 7 violet from AlOA5J4 SCAN I 1 MHz OUT and connect the frequency counter BNC input to AlOA5J4 using a BNC to SMB Snap on Test Cable Set the input selector switch on the frequency counter to lo HZ 500 MHZ and set the impedance switch to 150 4 On the RF Section key in STOP 10 MHz TART FREQ...

Page 294: ...Hz f 0 001 MHz Refer to Figure 3 79 for the location of AlOA8R9 3 MHz adjustment 8 On the RF Section key in START FREQ 8 599 MHz SWEEP iKKJ TRACE A CLEAR WRITEJ Note The CRT annotation will round off to 8 59 MHz but the RF Section is actually set to a start frequency of 8 599 MHz 9 Adjust AlOA5R4 100 MHz adjustment for a DVM indication of 15 0 f 0 5 Vdc Refer to Figure 3 79 for the location of AlO...

Page 295: ...to 8 60 MHz but the RF Section is actually set to a start frequency of 8 599 MHz 18 19 20 21 22 23 24 25 26 27 Connect the DVM to AlOA8TP5 VCO TUNE Adjust AlOA5R4 100 MHz adjustment for a DVM indication of 15 00 f 0 05 Vdc Connect the DVM to AlOA6TP7 PHASE DET OUT Adjust AlOA8R41 2 MHz adjustment for a DVM indication of 3 50 f 0 05 Vdc Repeat steps 12 through 21 as necessary until no further adjus...

Page 296: ...Section LINE switch to ON and key in j 1 FREQUENCY SPAN 0 HZ On the second spectrum analyzer key in Z G LSHIFT TART FREQ Set the controls of the second spectrum analyzer as follows CENTER FREQUENCY 160 MHz FREQUENCY SPAN 200 kHz RES BW MANUAL 10 kHz REFERENCE LEVEL 20 dBm Note In addition to the displayed 160 MHz signal other signals should be present at AlOA4J4 at approximately 160 3 MHz and 300 ...

Page 297: ...adjustment AlOA4C50 is completely closed select a higher value for factory selected component AlOA4C49 Refer to Ihble 3 12 for the acceptable range of values and corresponding HP part numbers for AlOA4C49 and to Figure 3 80 for the location of AlOA4C50 160 MHz PEAK and AlOA4C49 Ihble 3 12 Standard Values for AlOA4C49 HP Part Number 0160 3874 0160 4520 0160 4521 0160 4522 0160 4289 8 On the RF Sect...

Page 298: ... On the RF Section key in CCENTER FREQUENCY 42 569999 MHz FREQUENCY SPAN 0 HZ SWEEP SINGLE TRACE A CLEARWRITE The DVM indication should be 3 5 f 0 6 Vdc 16 On the RF Section key in CENTER FREQUENCY 42 6499 MHz FREQUENCY SPAN 100 kHz SWEEP iIGZ TRACE A CLEARWRITE 17 Set the controls of the second spectrum analyzer as follows CENTER FREQUENCY 164 001 MHz FREQUENCY SPAN 1 MHz REFERENCE LEVEL 14 dBm 1...

Page 299: ... from AlOA4TP3 and the second spectrum analyzer from AlOA4J2 OUT 160 166 MHz 20 Reinstall AlOA4 PLL3 Up Converter Assembly in the RF Section Reconnect the cable 7 violet to AlOA5J4 SCAN 5 1 MHz OUT the cable 6 blue to AlOA4J2 OUT 160 166 MHz and the cable 8 gray to AlOA4J3 IN 100 MHz Adjustments 3 159 ...

Page 300: ...C 50 ohm Termination HP 11593A Cables BNC to SMB Cable service accessory 85680 60093 Procedure 1 Set the spectrum analyzer LINE switch to STANDBY Turn the spectrum analyzer over to position the RF Section on top as shown in Figure 3 81 and remove the RF Section bottom cover 2 In the RF Section disconnect the cable 84 gray yellow from A6A12Jl and the cable 82 gray red from A6A12J2 Remove the cover ...

Page 301: ...ack from A6A9J2 CAL OUTPUT the cable 85 gray green from A6A9J3 100 MHz INPUT the cable 4 yellow from A6A9J4 VCO TUNE and the cable 5 green from A6A9J5 3 3 GHz INPUT Remove the A6A9 Phase Lock Assembly from the RF Section 4 Remove the front cover from the A6A9 Phase Lock Assembly and install it in the RF Section on an extender board Reconnect the cable 85 gray green to A6A9J3 100 MHz INPUT the cabl...

Page 302: ...agnitude of the voltages at both A6A9AlE5 and A6A9AlE6 Refer to Table 3 3 for the acceptable range of values for A6A9AlR5 and to Table 3 4 for HP part numbers Refer to Figure 3 82 for the location of A6A9AlR5 For example if the voltage measured at A6A9AlE5 is 0 87 Vdc and the voltage measured at A6A9AlE6 is 0 86 Vdc then the absolute value of the resulting sum is 0 87 0 86 0 01 Vdc Since the resul...

Page 303: ... a 10 00 dBm displayed signal and then press m FREQUENCY SPAN Connect the RF INPUT of the second spectrum analyzer to the RF Section A6A9Jl 300 MHz OUTPUT Set the controls of the second spectrum analyzer as follows CENTER FREQUENCY 550 MHz FREQUENCY SPAN 1 GHz REFERENCE LEVEL 25 dBm A ITEN 40dB LOG dB DIV 10 dB The 300 MHz output signal should be visible on the display of the second spectrum analy...

Page 304: ...lO OOOOV rising edge Press 5iZKYj connect dots on 24 On the oscilloscope press SHOW The VCO TUNE waveform displayed on the oscilloscope should be similar to Figure 3 83 Use the oscilloscope aTav markers to measure the waveform maximum and minimum voltages and the dead time between consecutive voltage ramps hp r u n n i n g 5 0 0 V div l OOOrl d c 0 0 0 0 0 0 s 5 0 0 0 0 0 IS 1 0 0 0 0 0 IS 1 0 0 n...

Page 305: ...and cable 5 green from A6A9J5 3 3 GHz INPUT 27 Remove the A6A9 Phase Lock Assembly from the extender board and remove the extender board from the RF Section Reinstall the A6A9 Phase Lock Assembly in the RF Section 28 Disconnect cable 84 gray yellow from A6A12Jl and the cable 82 gray red from A6A12J2 Replace the cover to the A6 RF Module and then reconnect cable 84 gray yellow to A6A12Jl and cable ...

Page 306: ...um analyzer on its right side as shown in Figure 3 84 and remove the RF Section bottom cover PQWER METER SPECTRIJU ANALYZ ZR Device Under Tamt Figure 3 84 Cal Output Adjustment Setup 2 Set the RF Section LINE switch to ON and allow the RF Section and power meter power sensor to warm up for at least 5 minutes 3 Connect the power sensor to the power meter POWER REF output and zero and calibrate the ...

Page 307: ...ossible to the range of 9 0 dBm to 11 0 dBm Refer to Table 3 3 for the acceptable range of values for A6A9AlR10 and Table 3 4 for HP part numbers Refer to Figure 3 85 for the location of A6A9AlRlO 5 Adjust A6A9AlRll CAL OUTPUT for a power meter indication of 10 00 f 0 01 dBm 6 Disconnect the power meter power sensor from the RF Section front panel CAL OUTPUT connector 7 Press 2 22 on the second sp...

Page 308: ...ak of the highest harmonic of the 100 MHz signal Adjust A6A9AlC29 TRIPLER MATCH only as much as required to lower the level of the highest harmonic to greater than 25 dB down relative to the peak of the 100 MHz CAL OUTPUT signal Refer to Figure 3 85 for the location of A6A9AlC29 TRIPLER MATCH Disconnect cable 2 red from A6A9Jl 300 MHz OUTPUT on the A6A9 Phase Lock Assembly Connect the RF INPUT of ...

Page 309: ... 0691 Cables BNC to SMB Cable 2 required semice accessow 85680 60093 1 Set the spectrum analyzer LINE switch to STANDBY Turn the spectrum analyzer over to position the RF Section on top as shown in Figure 3 87 and remove the RF Section bottom cover 2 In the RF Section disconnect cable 84 gray yellow from A6A12Jl and cable 82 gray red from A6A12J2 Disconnect cable 2 red from A6A9Jl 300 MHz OUTPUT c...

Page 310: ...1 4 MHz Bandpass Filter for maximum capacitance The capacitors are visible through five evenly spaced unlabeled access holes in the bottom cover of the A6A3 Last Converter Assembly position each capacitor with its adjustment slot vertical and plates fully meshed Refer to Figure 3 88 for the location of A6A3AlC8 A6A3AlC9 A6A3AlC10 A6A3AlC11 and A6A3AlC12 7 Install the A6A3 Last Converter Assembly i...

Page 311: ...eper and key in Icw 321 4 MHz POWER LEVEL 20 0 dBm Connect the RF OUTPUT of the synthesized sweeper to A6A3Jl 321 4 MHz IN using a second BNC to SMB snap on test cable In the following steps an SMB male bulkhead connector is used as an input probe for the second spectrum analyzer The probe tip is partially inserted through access holes in the bottom cover of the A6A3 Last Converter Assembly If the...

Page 312: ... Icw 310 7 MHz POWER LEVEL 40 dBm 22 Locate the 10 7 MHz Notch Filter adjustment visible through the remaining unlabeled access hole near the center of the bottom cover of the A6A3 Last Converter Assembly refer to Figure 3 88 Adjust A6A3AlC23 to minimize the amplitude of the 10 7 MHz signal displayed on the second spectrum analyzer 23 Set the RF Section LINE switch to STANDBY 24 Disconnect the syn...

Page 313: ...e 29 Reconnect cable 84 gray yellow to A6A12Jl and cable 82 gray red to A6A12J2 Reconnect cable 2 red to A6A9Jl 300 MHz OUTPUT cable 0 black to A6A9J2 CAL OUTPUT cable 85 gray green to A6A9J3 100 MHz INPUT cable 4 yellow to A6A9J4 VCO TUNE and cable 5 green to A6A9J5 3 3 GHz INPUT 30 Replace the RF Section bottom cover Adjustments 3 173 ...

Page 314: ...Hz 26 5 GHz 0 3214 GHz 18 dB 7 4 8 26 5 GHz 40 0 GHz 0 3214 GHz 20 dB 8 Q lO 33 0 GHz 50 0 GHz 0 3214 GHz 22 dB 9 uJ lO 40 0 GHz 60 0 GHz 0 3214 GHz 24 dB 10 V 14 50 0 GHz 75 0 GHz 0 3214 GHz 26 dB 11 El 16 60 0 GHz 90 0 GHz 0 3214 GHz 28 dB 12 w 18 75 0 GHz 110 GHz 0 3214 GHz 30 dB 13 09 24 90 0 GHz 140 GHz 0 3214 GHz 32 dB 14 CD 30 110 GHz 170 GHz 0 3214 GHz 34 dB 15 3 36 140 GHz 210 GHz 0 3214 ...

Page 315: ...er both sweep independently of each other one must be swept quickly relative to the other to review the frequency response across a given frequency band The f9 Vdc precision reference is initially checked and adjusted Then the drive current to the A6A4 Second Converter 3 3 GHz oscillator is set at 15 mA and the SWEEP TUNE offset is adjusted for Band A Over each frequency band the leveled reference...

Page 316: ...re adjusted repaired or replaced The YTX TUNE YTO TUNE 1 3 V GHz signal from the A19 DAC Assembly directly affects the tuning of both the AllA YTO and A6A8 YTX Adjustments on the Al6 Scan Generator Assembly A19 DAC Assembly and A20 Main Coil Driver Assembly have a direct affect on YTX YTO tracking in the preselected 2 GHz 22 GHz frequency bands 1 Set the spectrum analyzer LINE switch to STANDBY Tu...

Page 317: ... the A6 RF Module and then reconnect cable 84 gray yellow to A6A12Jl and cable 82 gray red to A6A12J2 See Figure 3 90 for the location of the A6A12 YTX Driver Assembly and the A6 RF Module Note The spectrum analyzer must be ON continuously not in STANDBY and set to the 2 22 j settings for at least 30 minutes prior to performing the following adjustment procedure to allow the temperature and tuning...

Page 318: ... Wl using an SMB m to SMA f adapter See Figure 3 90 for the location of A6A3J3 21 4 MHz OUT 11 On the spectrum analyzer key in j 8 Verify that the displayed signal amplitude indicated by the MARKER is 10 00 dBm f0 40 dB If the displayed signal amplitude is not within this tolerance perform the following adjustment procedures as necessary to adjust the overall RF gain of the HP 85662A IF Display Se...

Page 319: ...E OUT connector 19 Adjust 25 turn potentiometer A6A12R98 ZERO for a DVM indication of 0 000 fO OO1 Vdc See Figure 3 90 for the location of A6A12R98 Band A 10 MHz to 2 5 20 Connect the equipment as shown in Figure 3 91 with one GHz resistive output of the power splitter connected to the power meter power sensor using an APC 3 5 m to Type N f adapter and the second resistive output connected to the ...

Page 320: ... the remaining steps in this adjustment procedure 27 Set Band A Lower Segment A6AllR48 Al and Band A Upper Segment A6AllR66 A2 each to the approximate center of its adjustment range Then adjust A6AllR84 GAIN fully clockwise for maximum RF gain See Figure 3 90 for the locations of A6AllR48 Al A6AllR66 A2 and A6AllR84 GAIN 28 On the spectrum analyzer key in E5iCiJ 8 REFERENCE LEVEL 4 dBm and then pr...

Page 321: ...sponses should be displayed as shown in Figure 3 92 The peaks of these responses coarsely outline the spectrum analyzer frequency response Figure 3 92 Typical Coarse Frequency Response 10 MHz 2 5 GHz 35 Gradually readjust Band A Lower Segment A6AllR48 Al and Band A Upper Segment A6AllR66 A2 for maximum flatness of the displayed signal responses The adjustments are interactive with A6AllR48 Al havi...

Page 322: ...ut signal should be displayed as a TRACE A response and the spectrum analyzer frequency response should be displayed as TRACE B as shown in Figure 3 93 1 PO START i M H Z S T O P 2 58 GHZ RES 8W 3 MHZ SW 3 MHZ SWP 5 2 3 msec Figure 3 93 Typical Frequency Response 10 MHz 2 5 GHz On the spectrum analyzer key in TRACE B m TRACE A ml MARKER j 1 and use the DATA knob to position a marker on the lowest ...

Page 323: ... PEAK SEARCH to position a marker on the peak of the displayed 100 MHz signal 43 44 45 With the RF Section front panel AMPTD CAL control still set to the approximate center of its adjustment range readjust 17 turn potentiometer Band A Step Gain A6AlOR21 GA to adjust the amplitude of the displayed 100 MHz marker to 10 00 dBm fO O1 dB Adjust A6AlOR21 GA counterclockwise to increase the signal level ...

Page 324: ...76 LR4 affect YTX YTO tracking in all preselected frequency bands Bands B C D and E 2 GHz 22 GHz These adjustments overlap and have a cumulative effect on YTXKI O tracking with increasing frequency 51 If the A6AlO Miscellaneous Bias Relay Driver Assembly or A6A7 YTX Current Driver Assembly has been repaired or replaced or if the A6A8 YTX has been replaced adjust 22 turn YTX Linearity potentiometer...

Page 325: ... sweeper POWER LEVEL setting internal leveling or XTAL REF and XTAL ATN settings external diode detector leveling for the remaining steps in this adjustment procedure The frequency response adjustments are referenced to the 10 00 dBm power level at 100 MHz 56 Disconnect the power sensor from the power splitter and connect this power splitter resistive output to the spectrum analyzer RF INPUT using...

Page 326: ...eeper key in Icw 3 9 GHz On the spectrum analyzer key in MARKER C J MARKER PEAK SEARCH to position a marker at the peak of the displayed 3 9 GHz signal Adjust 17 turn Band B Step Gain potentiometer A6AlOR23 GB as necessary to adjust the amplitude of the displayed 3 9 GHz marker to 10 00 dBm fO 10 dB Adjust A6AlOR23 GB counterclockwise to increase the signal level and clockwise to decrease the sign...

Page 327: ... displayed signal responses The adjustments are interactive with A6AllR51 Bl having the most effect on the level of the displayed signals below mid band approximately 3 9 GHz and A6AllR69 B2 having the most effect on the level of the displayed signals above mid band Adjust A6AllR51 Bl counterclockwise to increase the level of the displayed signal responses below mid band Adjust A6Al lR69 B2 clockw...

Page 328: ... Band B Upper Segment A6AllR69 B2 as necessary for maximum flatness of the displayed signal responses 77 On the spectrum analyzer key in SWEEP FEE WEEP TIME 15Os TRACE A KKQ TRACE B jj SAVEI 6 TRACE B CLEAR WRITE m 5 jT5E 78 Press SWEEP SINGLE on the spectrum analyzer and wait for the sweep to complete 150 seconds and the SWEEP LED to turn off As the spectrum analyzer tunes from 2 0 GHz to 5 8 GHz...

Page 329: ...85 if necessary until the total peak to peak deviation of the TRACE B waveform is less than 3 40 dB See the TRACE B reference waveform to indicate which portions of the frequency response waveform require relative adjustment On the spectrum analyzer key in RECALL 4 IHOLD On the synthesized sweeper press cw and enter the frequency recorded in step 85 positioning the displayed TRACE A signal respons...

Page 330: ... SEARCH to position a marker at the peak of the displayed 6 0 GHz signal Adjust 17 turn Band C Step Gain potentiometer A6AlOR25 GC as necessary to adjust the amplitude of the displayed 6 0 GHz marker to 10 00 dBm fO 10 dB Adjust A6AlOR25 GC counterclockwise to increase the signal level and clockwise to decrease the signal level If A6AlOR25 GC does not have sufficient range adjust the amplitude of ...

Page 331: ...ess of the displayed signal responses The adjustments are interactive with A6AllR54 Cl having the most effect on the level of the displayed signals below mid band approximately 9 1 GHz and A6Al lR72 C2 having the most effect on the level of the displayed signals above mid band Adjust A6AllR54 Cl counterclockwise to increase the level of the displayed signal responses below mid band Adjust A6Al lR7...

Page 332: ...begin to drop Continue to adjust A6AlOR40 LB1 until the rolloff point aligns with the position of the marker See Figure 3 90 for the locations of A6AlOR40 LB1 and A6AlOR31 LRl e Readjust 22 turn YTX Linearity potentiometer A6AlOR31 LRl clockwise to maximize the displayed signal responses at the high end of the band f Readjust A6A12R84 C and A6AlOR31 LRl as necessary to maximize the displayed signa...

Page 333: ...CTOR DAC setting from step 107 Press SWEEP 1 and wait for the sweep to complete 150 seconds and the SWEEP LED to turn off 109 Repeat steps 107 and 108 until the level of the lowest point on the TRACE B waveform does not change Repeat step 108 with a PRESELECTOR DAC value of 30 and 34 110 On the spectrum analyzer key in TRACE B VIEW MARKER XYXiJ and use the DATA knob to position a marker on the low...

Page 334: ...s with serial number prefix 2747A or above and A6AlOR25 GC does not have sufficient range change the value of factory select component A6AlOR88 Increase the value of A6AlOR88 to decrease the signal level and decrease the value of A6AlOR88 to increase the signal level See Ihble 3 3 for the acceptable range of values for A6AlOR88 and Iable 3 4 for HP part numbers See Figure 3 90 for the location of ...

Page 335: ... Dl counterclockwise to increase the level of the displayed signal responses below mid band Adjust A6AllR75 D2 clockwise to increase the level of the displayed signal responses above mid band See Figure 3 90 for the locations of A6AllR57 Dl and A6Al lR75 D2 2 1 Frequency Response Adjustments the displayed 15 0 GHz signal Adjust 17 turn Band D Step Gain potentiometer A6AlOR27 GD as necessary to adj...

Page 336: ...R42 LB3 A6AlOR34 LR2 and A6AlOR37 LR3 e Readjust 22 turn YTX Linearity potentiometer A6AlOR34 LR2 clockwise to maximize the displayed signal responses for approximately 3 divisions to the right of the marker f On the spectrum analyzer key in MARKER NORMAL and position the marker at the point in the band where the signal responses begin to fall off from their maximum value g Readjust 22 turn YTX Li...

Page 337: ...he highest point on the TRACE B waveform Note the total peak to peak deviation of the displayed trace Band D total peak to peak deviation dB On the spectrum analyzer press MARKER NORMAL and note the frequency of the highest point on the TRACE B waveform Band D highest point GHz Repeat steps 130 through 136 as necessary until the total peak to peak deviation of the TRACE B waveform is less than 4 4...

Page 338: ...INPUT from step 55 143 Adjust 22 turn IF Offset potentiometer A6A12R82 E and 17 turn YTX Bias potentiometer A6AlOR9 VE for maximum signal amplitude at 20 0 GHz on the spectrum analyzer display See Figure 3 90 for the locations of A6A12R82 E and A6AlOR95 VE 144 On the spectrum analyzer key in MARKER ZiZiJ MARKER PEAK SEARCH to position a marker at the peak of the displayed 20 0 GHz signal Adjust Il...

Page 339: ...B BLANK HOLD 151 Readjust 17 turn YTX Diode Bias potentiometer A6AlOR95 VE to maximize the overall level of the displayed signal responses from 18 6 GHz to 22 0 GHz on the spectrum analyzer display Then adjust A6AlOR95 VE clockwise until signal responses at the high end of the band drop in amplitude by approximately 1 5 dB 152 Readjust 22 turn IF Offset potentiometer A6A12R82 E as necessary to max...

Page 340: ...it for the sweep to complete 150 seconds and the SWEEP LED to turn Off On the spectrum analyzer key in jJ 4 m GHz and use the DATA knob to gradually change the PRESELECTOR DAC setting from 32 maximizing the level of the TRACE A displayed signal responses at the lowest point on the TRACE B waveform Note the PRESELECTOR DAC setting On the spectrum analyzer key in j 1 6 m and enter in the PRESELECTOR...

Page 341: ...F Sections with serial number prefix 2747A or above and A6AlOR29 GE does not have sufficient range change the value of factory select component A6AlOR90 Increase the value of A6AlOR90 to decrease the signal level and decrease the value of A6AlOR90 to increase the signal level See Iable 3 3 for the acceptable range of values for A6AlOR90 and Iable 3 4 for HP part numbers See Figure 3 90 for the loc...

Page 342: ...ue in the 1 second SWEEP TIME column of lhble 3 15 lhble 3 15 Preselector Delay Compensation DAC Values 1 Preselector DAC Value Trial Number 5 Average Value Repeat step 171 to record four additional Preselector DAC value entries in the 1s SWEEP TIME column of Iable 3 15 On the spectrum analyzer key in SWEEP TIME Z MARKER PEAK SEARCH_ On the spectrum analyzer press PRESEL PEAK and wait for the pres...

Page 343: ... value for AUTO SWEEP TIME is 35 4 and the average value for SWEEP TIME 1s is 32 0 the difference recorded in step 177 is 3 4 Assume that the currently installed value of A6A12Cl is 0 33 pF the value of A6A12Cll is 0 22 PF and that A6A12C2 A6A12C3 and A6A12C23 are not installed These values correspond to line 0 of lkble 3 16 The final capacitor values are listed in line 3 determined by adding the ...

Page 344: ......

Page 345: ... and Ihble 3 4 for HP part numbers See Figure 3 90 for the location of A6AlOR91 188 189 190 191 192 Disconnect the low loss microwave test cable from the spectrum analyzer front panel 321 4 MHz IF INPUT connector Reconnect the jumper cable between the spectrum analyzer front panel 32 1 4 MHz IF INPUT and IF OUTPUT connectors On the spectrum analyzer key in m Q u 6 Hz m REFERENCE LEVEL z 12 dBm In ...

Page 346: ...ich can be built with common components is illustrated in Figure 3 108 If these components are unavailable the alternate procedure provided below using only the digital voltmeter can then be used LW NO I SE DC SUPPLY l D I G I T A L VOLTWTER Figure 3 100 Analog To Digital Converter Adjustments Setup Equipment Oscilloscope HP 545OlA Digital Voltmeter HP 3456A Low Noise DC Supply Optional See Figure...

Page 347: ...ope The square wave sould be approximately 4 V See Figure 3 101 for location of adjustment g Remove short from A3ASTP4 and A3A8TP5 or disconnect the SMB snap on short from A3A8Jl h Press CO 2 5 i Press MARKER ZZZZ 1498 MHz and I SINGLE j Connect DVM to A3A8TP5 and ground to A3A8TP4 Set DVM for V dc k Connect output of the Low Noise DC Supply to A3A8Jl Adjust the Low Noise DC Supply for DVM indicat...

Page 348: ... at a maximum ac voltage as indicated by the DVM approximately 2 0 V ac See Figure 3 101 for location of adjustment Remove short from A3ASTP4 and A3ASTP5 Reconnect cable 0 black to A3ASJl Press O 2 5 Connect DVM to A3ASTP5 and ground to A3ASTP4 Set DVM for V dc Press SWEEP Cm Note DVM reading at end of the sweep The voltage will begin to drift immediately after the sweep ends Therefore the first i...

Page 349: ... 8 9 Place spectrum analyzer upright as shown in Figure 3 102 with IF Display Section top cover and A3 Digital Storage covers removed Set spectrum analyzer LINE switch to ON and press C 1 Connect CAL OUTPUT to RF INPUT Connect DVM to A3A9TP3 and ground to A3A9TPl Key in CENTER FREQUENCY 100 MHz FREQUENCY SPAN 0 Hz Disconnect cable 7 violet from A4AlJl Short A3A9TPl to A3A9TP3 or use an SMB snap on...

Page 350: ...ve the SMB short from A3A9Jl Reconnect cable 7 violet to A4AlJl 16 Connect the DVM to A4AlTP3 Connect DVM s ground to the IF section s casting 17 Press REFERENCE LEVEL and adjust DATA knob and front panel AMPTD CAL adjust for a DVM indication of 2 000 fO OO1 V dc at A4AlTP3 18 Disconnect DVM from instrument 19 Key in Cm TRACE A CCLEAR WRITE MARKER Cj MARKER a SWEEP ICONT 20 Adjust A3A9R57 T II GAI...

Page 351: ...23 Track and Hold Adjustments 25 Repeat steps 4 through 24 until no further adjustments are required Adjustments 3 211 ...

Page 352: ...old Balance adjustments are performed The horizontal and vertical Offset and Gain adjustments are performed then the final CRT graticule adjustments are performed Last the CRT annotation adjustments are performed to place the CRT annotation in proper location with respect to the CRT graticule Figure 3 104 Digital Storage Display Adjustments Setup Digital Voltmeter DVM HP 3456A Digitizing Oscillosc...

Page 353: ...splay Adjustments 6 Adjust A3A3R6 XLL so that horizontal graticule lines just meet the vertical graticule lines at the left and right sides of the graticule See Figure 3 105 for location of adjustment 7 Adjust A3A3R9 YLL so that vertical graticule lines just meet the horizontal graticule lines at the top and bottom of the graticule See Figure 3 105 for location of adjustment 8 Repeat steps 6 and 7...

Page 354: ... Key in SHIFT 0 Z RECORDER LOWER LEFT 0 IHz Press SHIFT 0 1 RECORDER UPPER RIGHT 1028 IHL Set the oscilloscope controls as follows Press ICHANl Channel 1 on probe 1O l amplitude scale 50 mV div offset O V coupling dc Channel 4 off probe 1O l amplitude scale 2 V div offset OV coupling dc Press TRIG source Channel 4 level 300 mV edge Press CTlME time scale 500ns div delay 400 ns Press DISPLAY connec...

Page 355: ... 0 0 us 4 0 0 0 0 0 ns 2 1 0 0 0 0 us 5 0 0 ns div 1 5 0 0 W div offset 0 0 0 0 v 10 00 I dc 4 f 300 5 l l Figure 3 107 Waveform Before Adjustment 19 Connect the oscilloscope Channel 1 probe to A3A3TP7 20 Adjust A3A2R51 Y S H BAL for minimum dc offset between the level of the signal inside the two pulses to the signal level outside the two pulses 21 Set spectrum analyzer LINE switch to STANDBY 22 ...

Page 356: ...e being centered on the right edge graticule line A3AlR34 SWP OFFSET must then be readjusted so that the trace begins at the left edge graticule line See Figure 3 105 for location of adjustment Remove the cable 9 white from A3A2J2 LG FS test connector and reconnect to A3A9J2 Remove cable 7 violet from A4AlJl Short A3A9TPl to A3A9TP3 or connect an SMB snap on short to A3A9Jl Connect DVM to A3A9TP3 ...

Page 357: ...hoot 46 Adjust A3A2R12 LL THRESH clockwise until all graticule lines switch over to long lines This is indicated by a noticeable increase in graticule line intensity All graticule lines should increase in intensity X and Y Expand 47 Press j2j Adjustments 48 Key in MARKER m 49 Adjust A3A3Rl X EXP to center the letter F in REF CRT annotation in upper left corner of display over the left edge graticu...

Page 358: ...2 0757 0442 0757 0465 0757 0290 2100 2733 0757 0280 0757 0280 3101 1792 1826 0092 1902 0049 1902 0049 CD 9 1 8 9 9 6 5 6 3 3 8 3 2 2 O U T P U T OVdc 2Vdc o r 10 V d c Description CAPACITOR FXD Ol pf CONNECTOR BNC RESISTOR FXD 1 96K 1 125W RESISTOR FXD 10K 1 125W RESISTOR FXD 10K 1 125W RESISTOR FXD 1OOK 1 125W RESISTOR FXD 6 19 K 1 125W RESISTOR VARIABLE 50K 20 RESISTOR FXD 1K 1 125W RESISTOR FXD...

Page 359: ...tion of 3 MHz IF crystal filter bypass networks used with the A4A7 assembly Four 3 MHz bypass networks are required 2 1 4 M H z BYPASS CAPAC I TOR CA PP OR RE y RECEPTACLES Figure 3 109 Crystal Filter Bypass Network Configurations Ihble 3 18 Crystal Filter Bypass Network Configuration for A4A4 and A4A8 21 4 MHz I Part 1 Value Qty 1 HP Fort Number Resistor 31 69 2 0698 7200 Capacitor 100 pF 2 0160 ...

Page 360: ...d adjustment under Impulse Bandwidths The procedures included in this chapter are listed below 6 dB Bandwidths Performance Tests Test 3 6 dB Resolution Bandwidth Accuracy Test 4 2 Test 4 6 dB Resolution Bandwidth Selectivity Test 4 10 Adjustment Procedure Adjustment 9 6 dB Bandwidth Adjustments 4 23 Impulse Bandwidths Performance Tests Test 3 Impulse and Resolution Bandwidth Accuracy Test 4 4 Test...

Page 361: ...10 dBm Press SCALE LIN pushbutton Press CsHlFT my resolution bandwidth for units in dBm Adjust REFERENCE LEVEL to position peak of signal trace at or just below reference level top graticule line Press SWEEP iYZZJ Press MARKER C 1 and place marker at peak of signal trace with DATA knob Press MARKER la and position movable marker 6 dB down from the stationary marker on the positive going edge of th...

Page 362: ... of steps 6 and 7 and resolution bandwidth setting by the procedure of steps 6 and 7 and record the value in Table 4 1 The measured bandwidth should fall record the value in Table 4 1 The measured bandwidth should fall between the limits shown in the table between the limits shown in the table Ihble 4 1 6 dB Resolution Bandwidth Accuracy Ihble 4 1 6 dB Resolution Bandwidth Accuracy pEEi 3 MHz 1 MH...

Page 363: ...spectrum analyzer The amplitude of the pulses is measured and the impulse bandwidths are calculated for each impulse bandwidth from 3 MHz to 1 kHz The 6 dB resolution bandwidths are then measured using the spectrum analyzer JiiKK function The CAL OUTPUT signal is used as a stable signal source to measure the 6 dB resolution bandwidths PULSE FUNCTION GENERATOR I EXT I OUTPUT INPUT SPECTRUM ANALYZER...

Page 364: ...R amplitude for the 3 MHz filter in the HIGH FREQUENCY REPITITION RATE column in Ihble 4 2 Set the frequency synthesizer CFREQUENCY to 300 kHz On the spectrum analyzer press FREQUENCY SPAN 0 Hz SWEEP TIME 0 5 seconds SWEEP I 1 Press MARKER PEAK SEARCH Note the MARKER amplitude for the 3 MHz filter in the LOW FREQUENCY REPITITION RATE column in Table 4 2 Calculate the Impulse Bandwidth of the 3 MHz...

Page 365: ... i VIDEO FREQUENCY SPAN 400 kHz JEEP c 1 MARKER SPEAK SEARCH ude in Ihble 4 2 Set the frequency synthesizer FREQUENCY to 10 kHz On the spectrum analyzer key in CFREQUENCY SPAN 0 Hz SWEEP TIME 0 5 seconds SWEEP j J MARKER PEAK SEARCH Record MARKER amplitude in Iable 4 2 Calculate the Impulse BW of the 100 kHz filter using the formula in step 8 Record in Table 4 2 Set the frequency synthesizer FREQU...

Page 366: ...er key in BW 1 kHz i VIDEO SW 10 kHz CENTER TIME L MARKER ai EQUENCY 10 kHZ SPAN 4 kHZ SWEEP q SWEEP t 1 MARKER PEAK SEARCH Record nplitude in Iable 4 2 37 Set the frequency synthesizer FREqUl spectrum analyzer key in I 0 5 seconds SWEEP SINGLE MA MARKER amplitude in R ENCY to 200 Hz On the FREQUENCY SPAN 0 HZ WEEP TIME RKER CPEAK SEARCH Record able Ihble 4 2 38 Calculate the Impulse BW of the 1 k...

Page 367: ...asurements are used in Performance Test 4 Impulse and Resolution Bandwidth Selectivity Test MKR A 3 103 MHz LzEAIE 9 O dBm ATT EN I 0 00 dB u I A I I I I I I I I I CENTER 100 00 MHz SPAN 5 00 MHz RES BW 3 MHz VBW 3 MHz SWP 20 0 rnsec Figure 4 3 6 dB Resolution Bandwidth Measurement 46 Select the spectrum analyzer RESBW_ and FREQUENCY SPAN settings according to Ihble 4 3 Press SWEEP C j and measure...

Page 368: ... Frequency Repetition Rate 2 40 MHz 900 kHz 270 kHz 90 kHz 27 kHz 9 kHz 2 7 kHz 900 Hz Maximum 3 60 MHz 1 1 MHz 330 kHz 110 kHz 33 kHz 11 kHz 3 3 kHz 1 1 kHz I ble 4 3 6 dB Resolution Bandwidth Accuracy 3 MHz i 1 MHz i 00 kHz i 00 kHz i 30 kHz i 10 kHz i 3 kHz i 1 kHz i 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 20 kHz 5 kHz 2 kHz 300 Hz i 500 Hz 300 Hz 100 Hz i 200 Hz 100 Hz 30 Hz i 100 Hz 30 Hz 10 Hz i ...

Page 369: ...uracy Test must be performed before starting this test 1 Press jYZZ 2 Connect CAL OUTPUT to RF INPUT 3 Key in analyzer control settings as follows CENTER FREQUENCY 100 MHZ FREQUENCY SPAN 20 MHz 1 1 3 MHz VIDEO BW lOOHz SWEEP ZZ 4 Press MARKER C 1 and position marker at peak of signal trace Press MARKER ZJ and position movable marker 60 dB down from the stationary marker on the positive going edge ...

Page 370: ...able 4 4 8 Record the 6 dB bandwidths from Table 4 l in Table 4 4 9 Calculate the bandwidth selectivity for each setting by dividing the 60 dB bandwidth by the 6 dB bandwidth The bandwidth ratios should be less than the maximum values shown in fable 4 4 10 The 60 dB bandwidth for the 10 Hz resolution bandwidth setting should be less than 100 Hz EN 10 dB dB i 0 O dBm ATT MKR LI 14 04 MHz 0 30 UB Fi...

Page 371: ... Selectivity Selectivity Ratio Bandwidth Bandwidth 60 dB BW SdBBW 3 MHz 20 MHz 100 Hz 11 l 1 MHz 15 MHz 300 Hz 11 l 300 kHz 5 MHz AUTO 11 l 100 kHz 2 MHz AUTO 11 l 30 kHz 500 kHz AUTO 8 l 10 kHz 200 kHz AUTO 8 l 3 kHz 50 kHz AUTO 8 l 1 kHz 10 kHz AUTO 8 l 300 Hz 5 kHz AUTO 8 l 100 Hz 2 kHz AUTO 8 l 30 Hz 500 Hz AUTO 8 l 10 Hz 100 HZ AUTO 60 dB points separated by cl00 Hz 4 12 Option 462 ...

Page 372: ...ting are also measured The CAL OUTPUT provides a stable signal for the measurements Resolution Bandwidth Accuracy Test must be performed before this test None required 1 On the spectrum analyzer press C2 22 and connect the CAL OUTPUT to RF INPUT 2 Key in spectrum analyzer control settings as following CENTER FREQUENCY 100 MHZ FREQUENCY SPAN 20 MHz m j g VIDEO BW SWEEP cm 3 On the spectrum analyzer...

Page 373: ...ng from the MARKER m frequency readout see Figure 4 5 and record the value in fable 4 5 Select the spectrum analyzer RES iEEQ FREQUENCY SPAN and CVlDEo according to Table 4 5 Measure the 60 dB bandwidth for each resolution bandwidth setting by the procedure of steps 3 through 5 and record the value in Table 4 5 Record the 6 dB bandwidths for each resolution bandwidth setting from Table 4 l in Tabl...

Page 374: ... i 100 Hz i 30 Hz i 10 Hz i 1Frequency Span 20 MHz 15 MHz 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 10 kHz 5 kHz 2 kHz 500 Hz 100 Hz Video BW 100 Hz 300 Hz AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO AUTO Measured 60dB Bandwidth Measured Bandwidth 6dB Selectivity Bandwidth 60 dB BW 6dBBW I I Maximum Selectivity Ratio 11 l 11 l 11 l 11 l 8 l 8 l 8 l 8 l 8 l 8 l 8 l 50 dB points separated by cl00 Hz I Opt...

Page 375: ...e spectrum analyzer The deviation in peak amplitude of the signal trace is then measured as each resolution bandwidth filter is switched in None required 1 Press 2 22 2 Connect CAL OUTPUT to RF INPUT 3 Key in the following control settings CENTER FREQUENCY 100 F R E Q U E N C Y SPAN 5 REFERENCE LEVEL ii 8 1 4 Press LOG ENTER dB olv and key in 1 dB Press MARKER PEAK SEARCH a MHz MHz dBm MHz 5 Key i...

Page 376: ...th Switching Uncertainty Measurement Table 4 6 Bandwidth Switching Uncertainty Res Frequency Deviation Allowable BW Span MKR A Deviation Readout dB w 9 1 MHz i 5 MHz 0 ref 0 ref 3 MHz i 5 MHz f 1 0 OO kHz i 5 MHz f 0 5 00 kHz i 500 kHz f 0 5 30 kHz i 500 kHz f 0 5 10 kHz i 50 kHz f 0 5 3 kHz i 50 kHz f 0 5 1 kHz i 10 kHz f 0 5 300 Hz i 1 kHz f 0 5 100 Hz i 1 kHz f 0 5 30 Hz i 200 Hz f 0 8 10 Hz i ...

Page 377: ...Resolution Bandwidth Accuracy 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 20 kHz 5 kHz 2 kHz 500 Hz 200 Hz 100 Hz 100 Hz Min 2 400 MHz 900 kHz 270 0 kHz 90 0 kHz 27 00 kHz 9 00 kHz 2 700 kHz 900 Hz 270 Hz 90 Hz 27 0 Hz 10 0 Hz L Readout of 3 dB Bandwidth Actual 3 600 MHz 1 100 MHz 330 0 kHz 110 0 kHz 33 00 kHz 11 00 kHz 3 300 kHz 1 100 kHz 330 Hz 110 Hz 33 0 Hz 15 0 Hz 4 18 Option 462 ...

Page 378: ...h Accuracy pziiq lJ7EzGJ Marker Readouts for Calculated Impulse Bandwidth High Frequency Low Frequency Minimum Actual Maximum Repetition Rate Repetition Rate 3 MHz i 3 MHz 2 40 MHz 3 60 MHz 1 MHz i 3 MHz 900 kHz 1 1 MHz 300 kHz i 3 MHz 270 kHz 330 kHz 100 kHz i 1 MHz 90 kHz 110 kHz 30 kHz i 300 kHz 27 kHz 33 kHz 10 kHz i 100 kHz 9 kHz 11 kHz 3 kHz i 30 kHz 2 7 kHz 3 3 kHz 1 kHz i 10 kHz 900 Hz 1 1...

Page 379: ...9 through 46 6 dB Resolution Bandwidth Accuracy 3 MHz i 1 MHz i iO0 kHz i 00 kHz i 30 kHz i 10 kHz i 3 kHz i 1 kHz i 300 Hz i 100 Hz i 30 Hz i 10 Hz i 5 MHz 2 MHz 500 kHz 200 kHz 50 kHz 20 kHz 5 kHz 2 kHz 500 Hz 200 Hz 100 Hz 100 Hz 300 Hz 100 Hz 30 Hz 10 Hz 450 Hz 150 Hz 45 Hz 15 Hz 4 20 Option 462 ...

Page 380: ...2 MHz AUTO 500 kHz AUTO 200 kHz AUTO 50 kHz AUTO 10 kHz AUTO 5 kHz AUTO 2 kHz AUTO 500 Hz AUTO 100 HZ AUTO Measured Measured 6 0 d B 6dES Bandwidth Bandwidth Ikst 4 6 dB Resolution Bandwidth Selectivity p o able 2 24 Performance Tkst Record Step 9 6 dB Resolution Bandwidth Selectivity Bandwidth Selectivity 60 dB BW t SdBBW 60 dB point Maximum Selectivity Ratio 11 l 11 l 11 l I 11 l I 8 l I 8 l I 8...

Page 381: ...kHz i 300 Hz i 100 Hz i 30 Hz i 10 Hz i rum Analyl Frequency Video Span BW 20 MHz 100 Hz 15 MHz 300 Hz 5 MHz AUTO 2 MHz AUTO 500 kHz AUTO 200 kHz AUTO 50 kHz AUTO 10 kHz AUTO 5 kHz AUTO 2 kHz AUTO 500 Hz AUTO 100 Hz AUTO er Measured 60 dB Bandwidth Measured Bandwidth 6dB Selectivity Bandwidth 60 dB BW 6dBBW 60 dB points separated b Maximum Selectivity Ratio 11 l 11 l 11 l 11 l 8 l 8 l 8 l 8 l 8 l ...

Page 382: ...5 Impulse and Resolution Bandwidth Res BW Switching Uncertainty Frequency Span 1 MHz i 5 MHz 3 MHz i 5 MHz 300 kHz i 5 MHz 100 kHz i 500 kHz 30 kHz i 500 kHz 10 kHz i 50 kHz 3 kHz i 50 kHz 1 kHz i 10 kHz 300 Hz i 1 kHz 100 Hz i 1 kHz 30 Hz i 200 Hz 10 Hz i 100 Hz Deviation MKR A Readout dB 0 ref Allowable Deviation WV 0 ref f 1 0 f 0 5 f 0 5 f 0 5 f 0 5 f 0 5 f 0 5 f 0 5 f 0 5 f 0 8 f 2 0 Option 4...

Page 383: ...ntered about the center line on the graticule Press PEAK SEARCH MKR CF and MARKER nl Using the DATA knob adjust the marker down one side of the display signal to the 6 dB point CRT MKR A annotation indicates 500 x Adjust A4A9R60 3 MHz for MKR al indication of 1 5 MHz while maintaining the marker at 500 X using the DATA knob Refer to Figure 4 7 for the adjustment location Press MARKER a Adjust the ...

Page 384: ...ENCY SPAN 500 kHz PEAK SEARCH and j 1 If necessary readjust by pressing REFERENCE LEVEL and using the DATA knob to place the signal peak at the top of the graticule 18 Press MARKER m then MARKER nl 19 Using the DATA knob adjust the marker down one the displayed signal to the 6 dB point CRT MKR A annotation indicates 500 X 20 Adjust A4A9R62 300 kHz for MKR A indication of 150 kHz while maintaining ...

Page 385: ...be 10 0 fl O kHz 29 Key in EGi 3 kHz FREQUENCY SPANS 5 kHz CPEAK SEARCH and ilGGZ If necessary readjust by pressing REFERENCE LEVEL_ and using the DATA knob to place the signal peak near the top of the graticule 30 Press MARKER m and MARKER a 31 Using the DATA knob adjust the marker down one side of the displayed signal to the 6 dB point CRT MKR A annotation indicates 500 X 32 Adjust A4A9R66 3 kHz...

Page 386: ...ntered about the center line on the graticule Press PEAK SEARCH MKR CF and MARKER nl Using the DATA knob adjust the marker down one side of the display signal to the 7 3 dB point CRT MKR A annotation indicates 0 430 X Adjust A4A9R60 3 MHz for MKR la indication of 1 5 MHz while maintaining the marker at 0 430 X using the DATA knob Refer to Figure 4 8 for the adjustment location Press MARKER Ia Adju...

Page 387: ... 10 MHz 17 Key in REs 300 kHz FREQUENCY SPAN 500 kHz PEAK SEARCH and MKRj If necessary readjust by pressing REFERENCE LEVEL and using the DATA knob to place the signal peak at the top of the graticule 18 Press MARKER m then MARKER a 19 Using the DATA knob adjust the marker down one the displayed signal to the 7 3 dB point CRT MKR A annotation indicates 0 430 X 20 Adjust A4A9R62 300 kHz for MKR A i...

Page 388: ... kHz bandwidth The impulse bandwidth should be 10 0 fl O kHz 29 Key in RESBW 3 kHz FREQUENCY SPAN 5 kHz PEAK SEARCH and CMKR If necessary readjust by pressing REFERENCE LEVEL and using the DATA knob to place the signal peak near the top of the graticule 30 Press MARKER m and MARKER Ia 31 Using the DATA knob adjust the marker down one side of the displayed signal to the 7 3 dB point CRT MKR A annot...

Page 389: ... This chapter contains the modified amplitude fidelity performance test for Option 857 instruments This chapter also contains the modified amplitude fidelity portion of the Test Record for Option 857 instruments Option 857 5 1 ...

Page 390: ... Hz Resolution Bandwidth sf0 8 dB over 0 to 70 dB display 20 to 30 C sf2 1 dB over 0 to 90 dB display Linear f3 of Reference Level for top 9 l 2 divisions of display Description Amplitude fidelity in log and linear modes is tested by decreasing the signal level to the spectrum analyzer in 10 dB steps with a calibrated signal source and measuring the displayed amplitude change with the analyzer s M...

Page 391: ...ectrum analyzer and wait for the sweep to be completed Press MARKER CPEAK SEARCH MARKER Ia Step the frequency synthesizer output amplitude down 10 dB On the spectrum analyzer press SWEEP C 1 and wait until the sweep is completed Press MARKER CPEAK SEARCH and record the marker A amplitude a negative value in column 2 of Ihble 5 1 Repeat steps 8 and 9 decreasing the output of the frequency sythesize...

Page 392: ... trace to reach its final amplitude 18 Subtract the value in column 1 from the value in column 2 for each setting to find the fidelity error 19 Subtract the greatest negative fidelity error from the greatest positive fidelity error for calibrated amplitude steps from 10 dB to 70 dB The result should be SO 6 dB dB 20 Subtract the greatest negative fidelity error from the greatest positive fidelity ...

Page 393: ...kHz 10kHz 22 Set the frequency synthesizer for an output power level of 10 dBm 23 Press SCALE LIN pushbutton Press MARKER PEAK SEARCH j 1 to center the signal on the display 24 Set FREQUENCY SPAN to 0 Hz and VIDEO to 1 Hz Press SHIFT_ m resolution bandwidth MARKER a 25 Decrease frequency synthesizer output amplitude by 10 dB steps noting the MARKER A amplitude and recording it in column 2 of Table...

Page 394: ...Performance Tkst Record Hewlett Packard Company Model HP 8566B Serial No IF Display Section RF Section Tested by Report No Date 5 6 Option 857 ...

Page 395: ...I 0 to 70 dB 0 to 90 dB ww Step VW W 10 0 ref 0 ref 0 ref 0 10 10 20 20 30 30 40 40 50 50 60 60 70 70 80 80 90 s O 8 dB sf2 1 dB Step 18 Log Amplitude Fidelity 10 kHz RRW Frequency 1 2 Fidelity Error Cumulative Cumulative Synthesizer Calibrated MARKER A Amplitude Column 2 Column 1 Error Error Amplitude Amplitude WV VW 0 to 70 dB 0 to 90 dl3 ww Step WV WI lO 0 ref 0 ref 0 ref 0 10 10 20 20 30 30 40...

Page 396: ...8 Option 857 Amplitude Fidelity Step 26 Linear Amplitude Fidelity Frequency MARKER A Synthesizer Amplitude Amplitude WI Wm 0 10 Allowable Range f3 of Reference Level Min 10 87 9 21 23 10 17 72 5 R Option 857 ...

Page 397: ...lOC3 6 4 6 5 AlAlOC4 6 4 6 5 AlAll 6 4 AlTl 6 4 6 5 6 7 AlVl 6 4 6 5 6 6 6 7 A3Al 6 4 6 5 A3A2 6 4 6 5 A3A4 6 4 6 5 A3A5 6 4 6 5 A3A6 6 4 6 5 A3A7 6 4 6 5 A3A8 6 4 6 5 A3A9 6 4 6 5 A3AlO 6 7 A4Al 6 4 6 5 A4A2 6 4 6 5 A4A3 6 4 6 5 A4A4 6 4 6 5 A4A5 6 4 6 5 A4A6 6 4 6 5 A4A7 6 4 6 5 A4A8 6 4 6 5 A4A9 6 4 6 5 A4AlO 6 7 FL1 6 4 6 5 Wl 6 6 w2 6 6 w3 6 6 W6 6 4 w7 6 4 W8 6 6 6 7 w9 6 6 W21 6 4 6 5 Major...

Page 398: ...A6Jl 6 2 A6J2 6 2 A6J3 6 2 A6J4 6 2 A6J5 6 2 A6Rl 6 2 A7 6 3 A8 6 3 All 6 3 Al2 6 3 Al5 6 3 Al6 6 3 Al7 6 3 Al8 6 3 A19 6 3 A20 6 3 A21 6 3 A22 6 3 A23 6 l A23Cl 6 1 6 3 A23C2 6 1 6 3 A23C3 6 1 6 3 A23C4 6 1 6 3 A23Ql 6 l A23Q2 6 l A23Q3 6 l A23Q4 6 l A23W5 6 1 6 2 A23W6 6 l A23W7 6 1 6 2 A23Ul 6 l A24 6 l Tl 6 3 w15 6 l 6 2 Major Assembly and Component locations ...

Page 399: ...N A23Ul 5V A23Q4 W15 2OV A2303 A 2 3Q2 A 2 3Ql A23C2 4OV A 2 3 MOTHERBOARD A23W6 0 A6A13 R F M O D U L E MOTHERBOARD A23W7 A6A6 F I R S T C O N V E R T E R Figure 6 1 RF Section Top View Major Assembly and Component locations 6 3 ...

Page 400: ...ction Front View A5SWl S T A N D B Y O N A6J5 A6J4 A6J2 A6Jl ld T O T fPb C A L O U T P U T A5A2 RPG A23W7 A23W5 A6Rl A M P T D C A L A6J3 R F I N P U T A5A 1 K E Y B O A R D 6 4 Major Assembly and Component locations ...

Page 401: ...A23C3 A23C4 40V 20V 5V A 2 4 TH F yGH Fd Q CY S T A N D A R D M N REFEREN T R A N S F O R M R F MOD Al 1 YTo A l 2 42 A10 2 0 3 0 r S Y THESIZER b GA15 3L Figure 6 3 RF Section Bottom View Major Assembly and Component locations 6 5 ...

Page 402: ...1 AlA AIVI AlA AIAIOCI AlAlOC4 AlA AlA AlA AlA F L 1 AITI A4A 1 A3A9 A3A8 A3A7 A3A6 A3A5 A3A4 A3A3 A3A2 A3Al I I 8 I Figure 6 4 IF Section Top View SN 3001A and Below A4A9 A4A8 A4A7 A4A6 A4A5 A4A4 A4A3 A4A2 6 6 Major Assembly and Component locations ...

Page 403: ...AlA AlA AlA AlA F L 1 AITI L L 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Figure 6 5 IF Section Ibp View SN 3004A and Above A4A9 A4A8 A4A7 A4A6 A4A5 A4A4 A4A3 A4A2 A4Al lA3A9 A3A8 A3A7 A3A6 A3A5 A3A4 A3A3 A3A2 A3Al Major Assembly and Component locations 6 7 ...

Page 404: ...AIVI Wi AlAl ti2 W8 Figure 6 6 IF Section Front View 6 8 Major Assembly and Component locations ...

Page 405: ...A4AlO W 8 W8 A3AlO AIAIO L I I I J w i 4 W 2 3 W 2 5 Wi6 W 2 7 Figure 6 7 IF Section Bottom View w29 W 2 4 W23 W32 S N 3 0 0 4 A a n d a b o v e AIVI Major Assembly and Component locations 6 8 ...

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