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1. 33321 60059 0955 1115 lt Power Measurement gt 0955 0689 0955 0665 i LO IN N lt Heterodyn gt IF 624MHz Manual Changes Change 1 RF OUT N to 4352B lt Local Drive gt 0955 1114 0955 0693 SW Driver amp Power Supply 0 Sequencer amp 43521ase005 Appendix A 40 MHz Input LO OUT N PORT to 4352B 121 Manual Changes Change 1 Page 82 Figure 6 2 Top View Major Assemblies Replace the figure with the following figure Figure A 5 Top View Major Assemblies E 43521ase034 122 Appendix A Manual Changes Change 1 Page 83 Table 6 1 Top View Major Assemblies Change the table as follows Table A 2 Top View Major Assemblies Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 66501 0 1 Al Board 2 0950 3642 7 1 Power Supply 3 33321 60059 8 1 Step ATT 4 8493 003 8 1 Attenuator 3dB 5 0955 1115 5 1 U WAVE 18 GHz 6 1250 1159 4 3 Adapter Coaxial 7 8493B 006 7 1 Attenuator 8 0955 0665 8 1 U WAVE 26 5 GHz 9 0955 1114 4 1 U WAVE 20 GHz 10 0955 0693 2 1 U WAVE FREQ DBLR
2. 3 5mm f N m Adapter Power Meter 1 o 3 5mm m 3 5mm m Cable 43521856052 4 Follow the program instruction to perform the power sensor tracking calibration 5 Connect the equipment as shown in Figure 3 7 Chapter 3 49 Adjustment RF Power Frequency Response Correction Constants Figure 3 7 RF Power Frequency Response Correction Constants Setup Cable To 10MHz OUT To 40 MHz Output To EXT REF SG Sweeper ono00 o0 200 S000 oO cO 0000 rion o 22 20009 H s Cra ooooo 5555 0000 rg iii 0000 LI a Sa EE 0000 0000 To 40 MHz Input OT N m N m Cable 18cm N m N m Cable 18cm SG Sweeper To 10 2 43521 RF IN p Can Eu anag H O To EXT REF Moo 6066 N m N m Adapter Power Sensor e Power Splitter gt 8 5mm f N m lt N m N m Cable 3 5mm m 3 5mm m Cable Power Meter 43521 5 010 6 Follow the adjustment program inst
3. 132 B Power Requirement Replacing Buse usa ELEME ESSE REC NEP Seats 136 Euseielections s oc be ts e bd e e i RR RACER sis 136 Power Requirements ere EU I A eun NI een eae rU n Ne S Deren d 137 Power Cable etta d Ste Rem Se REUS Re AR eR Qe RR RT a RC hae 137 Contents 10 General Information The Service Manual is a guide to servicing the 43521A Downconverter Unit The manual contains informatoin required to performance test adjust troubleshoot and repair the Downconverter unit 11 General Information Organization of Service Manual Organization of Service Manual The 435214 is used as part of the 43528 VCO PLL Signal Test System Using the 43521A expands the maximum frequency of the 43525 to 12 6 GHz This manual consists of the chapters and appendices listed below This section lists the names of the chapters and the desrcibes content of each chapter and the appendices 12 Performance Test provides the procedures required to performance test for the 43521A Adjustment provides procedures for adjusting the 43521A after repair or replacement of a part Most of the adjustments update the correction constants data stored in the EEPROM on the A1 board assembly The correction constants data is updated by using the adjustment program Troubleshooting outlines the 43521A troubleshooting and provides troubleshooting proce
4. J12 J13 J14 J9 J10 J11 gy DU P1 P1 P2 P2 P2 icm d as ect 5V 15V 43521ase009 2 Measure the DC voltages on the A1 using a voltmeter with a small probe See Table 4 2 60 Chapter 4 Troubleshooting Power Supply Troubleshooting for power lines connector pins and limits Table 4 2 A1 Power Supplies Supply Connector Pin Range 12 V J6 P3 for Thermo 10 8 to 13 2 5 V J7 P3 for LED 4 5 to 5 5 5 V J8 P3 for FAN 4 5 to 5 5 5 V J9 P2 for Coax SW 4 5 to 5 5 5 V J10 P2 for Coax SW 4 5 to 5 5 5 V J11 P2 for Coax SW 4 5 to 5 5 15V J12 P1 for Amp 13 5 to 16 5 15V J13 P1 for Amp 13 5 to 16 5 15V J14 P1 for Amp 13 5 to 16 5 5 V J15 P6 for Step Att 4 5 to 5 5 If any of the voltages are not within these limits replace the If the all voltages are good the A1 is verified Chapter 4 61 Troubleshooting 600 MHz OSC Troubleshooting Hmc ql 600 MHz OSC Troubleshooting Check the 600 MHz Output on the A1 board The 600 MHz Output path is shown in Figure 4 5 Figure 4 5 600 MHz OSC section simplified Block Diagram to Local Drive section LO IN N x LO OUT N from External SG i to 4352B 8665 etc f Coaxial Switch PN 33312 60005 A1 Board 600
5. Specification VSWR 1 5 Required Equipment Description Recommended Model Network Analyzer 8719D 8720D or 8722D VCO PLL Signal Analyzer 4352B Calibration Kit 85054D or 85054B N m N m Cable 18 cm p n 8120 4387 2ea Precision N m Precision N m 11500C or part of 11851B Cable 61 cm 3 5 mm f N f Adapter part of 83130 2 Special rugged female connector specifically for connecting to the network analyzer test port but does not mate with a standard male connector 2 Tf the 8722D is used use 87130E 11524 for a substitute Procedure 1 Preset the network analyzer then setup as follows Parameter Value Measurement mode SWR Source Power 0 dBm Sweep Mode Liner Start Frequency 2 GHz Stop Frequency 13 GHz Number of points 61 or larger If SWR is NOT included in the available measurement mode select the return loss or the reflection coefficient for a substitute 2 Makea S11 1 port calibration using the calibration kit 3 Connect the equipment as shown in Figure 2 2 Chapter 2 23 Performance Test Performance Test Figure 2 2 Input VSWR Test Setup 0200 ooo mmu Boo O0 Dono rng rra ooo mo i 0000 0000 RE IN LO IN Network Analyzer 43521A E Lo du RF IN 7 3 5mm f Adapter Precision N m Precision N m Cable
6. 119 Page 68 Heterodyne Path Troubleshooting 119 Page 70 Local Doubler Path Troubleshooting 120 Page 76 Figure 5 2 43521A Block Diagram 121 Page 82 Figure 6 2 Top View Major Assemblies 122 Page 83 Table 6 1 Top View Major Assemblies 123 Page 84 Figure 6 3 Top View Cables and Wires 1 2 124 Page 85 Table 6 2 Top View Cables and Wires 1 2 125 Page 86 Figure 6 4 Top View Cables and Wires 2 2 126 Page 87 Table 6 3 Top View Cables and Wires 2 2 127 Page 97 Figure 6 12 Step Attenuator Assembly 128 Page 97 Table 6 11 Step Attenuator Assembly 128 Page 103 Figure 6 18 DETECTOR 129 Page 103 Table 6 17 DETECTOR Assembly 129 Page 107 Step Attenuator Replacement 130 Page 107 U WAVE 18 GHz Replacement 131 Pages 112 Table 7 1 Post Repair
7. and then DOWNCONV on OFF to toggle it DOWNCONV ON off The 435214 outputs the 600 MHz signal 3 Press Meas and FREQ BAND xx xx in this order and then press a key other than FREQ BAND 10M 3G on the frequency band menu The selected frequency band softkey is underlined 4 Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF While keeping to 600 MHz signal from the 43521A you can use the measurement functions of the 4352B 5 Press Meas INST TYPE INST TYPE VCO TESTER and FREQUENCY in this order FREQUENCY is underlined which indicates that the frequency measurement in the tester mode is selected 54 Chapter 4 Troubleshooting Check Procedure Check that the measured value on the 4352B s screen is 600 MHz 64 kHz Press MEAS RF POWER Check that the measured value on the 4352B s screen is 8 dBm or more Ifthe measured values frequency and power are not within these limits continue with 600 MHz OSC Troubleshooting Ifthe measured values frequency and power are within these limits the 600 MHz OSC is verified Record this value as Pb The difference between this Pb and Pa described by Check Power Measurement Function is used to diagnose faults Check Power Measurement Function 1 Connect an N m N m cable between the LO OUT connector and the RF IN connector of the 43521A Connect a 15 pin D Sub cable furnished with the 43521 between the T O PO
8. Press Meas and FREQ BAND xx xx in this order and then press a key other than FREQ BAND 10M 3G on the frequency band menu The selected frequency band softkey 1s underlined Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF While keeping to 600 MHz signal from the 43521A you can use the measurement functions of the 4352B Press Meas INST TYPE INST TYPE VCO TESTER and FREQUENCY in this order And then press Sense Range FREQ RES 1kHz Rotate the 600 MHz ADJ clockwise until the 4352B reading is less than 599 976 MHz Connect a BNC cable between the 40 MHz Input of the 43521A and the 40 MHz Output of the 4352B Then confirm that the 4352B reading is within 600 MHz 1 kHz Disconnect the BNC cable between the 40 MHz Input of the of the 43521 and the 40 Output of the 4352B Then rotate the 600 MHz ADJ counterclockwise until the 4352B reading is within 600 MHz 6 kHz Press MEAS RF POWER and then check that the 4352B reading is 8 dBm or more Chapter 3 Adjustment Writing Default Correction Constant Writing Default Correction Constant The purpose of this procedure is to writing default data This adjustment is required only when the A1 Board is replaced Required Equipment Description Recommended Model VCO PLL Signal Analyzer 4352B Procedure 1 Run the adjustment program 2 Choose the CC WriteDef 3 Follow the adjustment program instruction to update the cor
9. Chapter 6 101 Figure 6 17 Parts Replacement Replaceable Part List U WAVE LPF Assembly 43521ase046 Table 6 16 U WAVE LPF Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 9135 0229 1 1 U WAVE LPF 2 1400 2299 4 2 CLAMP HOLDER 3 0380 1795 8 2 STAND OFF 4 0515 1087 8 2 Screw 102 Chapter 6 Parts Replacement Replaceable Part List Figure 6 18 DETECTOR Assembly 43521ase050 Table 6 17 DETECTOR Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 8474 6 1 DETECTOR 2 43521 61625 9 1 Wire Assy 3 43521 01210 1 1 Angle for DETECTOR 4 0515 1550 0 2 Screw 5 3050 0891 7 2 Washer Chapter 6 103 Figure 6 19 Parts Replacement Replaceable Part List U WAVE AMP 700 MHz Assembly 43521ase048 Table 6 18 U WAVE AMP 700 MHz Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 0955 0689 6 1 U WAVE 700 MHz 2 0180 3597 8 1 CAP 47 uF 3 0515 1426 9 2 Screw 4 3050 0229 5 2 Washer 5 43521 25002 0 1 Insulator 104 Chapter 6 Parts Replacement Replacement Procedure Replacement Procedure This Chapter describes how to replace the 43521A major assemblies The cover and panel removal procedures that are required for some assembly replacements are described first Then the replacement procedures for each major assembly are describ
10. A1 board 43521ase024 118 11636B Insertion Loss 7 5dB to Step Attenuator 0 35dB Appendix A Figure 3 Manual Changes Change 1 Page 66 Figure 4 9 Heterodyne Path Simplified Block Diagram Replace the figure with the following figure Heterodyne Path Simplified Block Diagram RF IN N Coaxial Switch 33312 60005 RF OUT N 43521ase025 11636B Insertion Loss 7 5dB P 33321 60059 B IF 624 MHz 0955 1115 Gain 18dB 8493B RF 0955 0665 N Conversion Loss 11dB F LP 0955 0689 Gain 19dB Lo 9135 0229 Cut Off Freq 800 2 Page 68 Heterodyne Path Troubleshooting Replace the description for the step 5 with the following description 5 Check signals from the mixer IF output using a spectrum analyzer If three spectrums LO and RF LO are traced on the analyzer s display but the result of the Check Heterodyne Path fails check the path between the mixer IF output and RF OUT Front connector Normally the signal RF LO goes through the LPF and the signal is amplified by the 0955 0689 Amp gain 19 dB when steps 1 through 4 are performed If the LO and RF LO signals are not traced check the path between the mixer LO connector and LO IN Front connector Normally the LO signal applied to the mixer LO connector is about 8 dBm when steps 1 through 4 are performed If the RF and R
11. 43521ase040 Chapter 3 41 Adjustment Running the Adjustment Program Running the Adjustment Program 1 Start the HP VEE 2 Load the adjustment program file into the HP VEE as follows a Pull down the File menu from the HP VEE window and select Open b Select the file C ADJ43521A ADJ43521A VEE and click Open 3 You may be asked to add drivers for the equipment during the program loading Click on OK and the GPIB address for each equipment Enter 0 as the address for the equipment which are not used for the adjustment See Figure 3 2 Figure 3 2 Direct I O configuration Device Configuration Nane pz aa Interface i z Driver for HP43S2B not found Add it nov E Address eg 714 0 Gateway This host CO met Aavenced 1 0 Config LU Cancel Help Click here Click here 43521 5 051 4 Click START button on the HP VEE Screen 5 Follow the instruction shown on the display 42 Chapter 3 Adjustment 600 MHz SAW Oscillator Frequency Adjustment 600 MHz SAW Oscillator Frequency Adjustment The purpose of this procedure is to adjust the 600 MHz SAW Oscillator Required Equipment Description Recommended Model VCO PLL Signal Analyzer 4352B Signal Generator 8664A 8665 or 8360B series N m N m Cable 61 cm 11500B or part of 11851B 2ea BNC m BNC m Cable 61 cm p n 8120 1839 2ea 1 83622B or 83624B cannot b
12. Cable 61cm 11500E 1 T Adapter N m N m Adapter 1250 1475 1 SMA f SMA f Adapter 1250 1158 1 SMA right angle m f Adapter 1250 1249 2 T 3 5mm f Precision N m Adapter 1250 1744 2 3 5mm m Precision N f Adapter 1250 1750 1 A 3 5mm m N m Adapter 1250 1743 1 A 3 5mm f N f Adapter part of 85130C gt 1 P Performance Test A Adjustment and Correction Constants T Troubleshooting 2 Special rugged female connector specifically for connecting to the network analyzer test port but does not mate with a standard male connector 3 1f the 8722D is used use 87130E 11524A for a substitute Chapter 1 15 General Information Require Equipment 16 Chapter 1 Performance Test This chapter provides the Performance Test Procedure for the 43521A Downconverter Unit These performance tests are used to verify that the analyzer s performance meets its specifications 17 Performance Test Performance Test Performance Test Introduction This section provides the test procedures used to verify that the 43521A s specifications are met The performance tests can also be used for incoming inspection and for verification after troubleshooting or adjustment If the performance tests indicate that the 43521A is NOT operating within the specified limits check your test setup then proceed with troubleshooting if necessary Warm Up Time Allow the 43521A to w
13. Gain 19dB 9135 0229 Cut Off Freq 800 2 43521856013 1 Turn the 43521A power off and disconnect a RF semrigid cable from the mixer PN 0955 0665 IF output connector The connector location is shown in Figure 4 10 NOTE Remove the two screws that secure the LPF Low Pass Filter before the semirigid cable is disconnected from the mixer IF output 66 Chapter 4 Figure 4 10 Troubleshooting Heterodyne Path Troubleshooting Mixer IF OUTPUT connector location 43521ase020 S e 2 Connect the equipment as shown in Figure 4 2 and connect a 15 pin D Sub cable furnished with the 43521 A between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B 3 Turn the 43521 power on and press Preset to initialize the 4352B then set the 43521A 4352B as follows Setting Operation Instrument type VCO Tester Meas INST TYPE VCO TESTER Measurement mode FREQUENCY Meas FREQUENCY Down converter control ON RF LO DOWNCONV ON off Signal Generator max freq 3 GHz RF LO SG MAX 3 G n Frequency Band 2 5 3 6 GHz Meas FREQ BAND 2 5 3 6G LO control Manual RF LO LO CONTROL auto MAN 43521A Attenuator 20 dB Sense Range RF ATTEN 2
14. OPTION 904 U S Canada Plug NEMA 6 15P 250V 6A Cable 8120 0698 OPTION 912 Denmark Plug SR 107 2 D 250V 10A Cable 8120 2956 OPTION 918 Plug JIS C 8303 125V 12A Cable 8120 4753 OPTION 921 Plug CEI 23 16 250V 10A Cable 8120 6978 OPTION 901 Australia New Zealand Plug AS 3112 250V 10A Cable 8120 1369 OPTION 903 U S Canada Plug NEMA 5 15P 125V 10A Cable 8120 1378 OPTION 906 Switzerland Plug SEV Type 12 250V 10A Cable 8120 2104 OPTION 917 India Republic of S Africa Plug IEC 83 1 250V 10A Cable 8120 4211 OPTION 920 Argentina Plug Argentine Resolution 63 Annex IV 250V 10A Cable 8120 6870 OPTION 922 Plug GB 1002 250V 10A Cable 8120 8376 NOTE Each option number includes a family of cords and connectors of various materials and plug body configurations straight 90 etc agi 138 Appendix B
15. Generator max freq 3 GHz RF LO SG MAX 3 G n Frequency Band 3 1 6 6 GHz Meas FREQ BAND 3 1 6 6G LO control Manual RF LO LO CONTROL auto MAN 43521A Attenuator 20 dB Sense Range RF ATTEN 2 0 x1 3 Set signal generators as follows Instrument Setting RF signal generator Freq 4 6 GHz Power 0 dBm LO signal generator Freq 1 988 GHz Power 10 dBm 4 Press Meas FREQ BAND NOMINAL FREQ 4 6 G n 1 Ifthe 4352B reading is not 4 6 GHz change the frequency of the LO signal generator to the LO s frequency which is displayed on the left bottom of the 4352B display Then confirm that the 4352B reading is 4 6 GHz 5 Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF and Chapter 4 57 Troubleshooting Check Procedure press Meas RF POWER then check that the 4352B reading is more than 7 dBm Ifthe 4352B reading is not within the limit continue with Local Doubler Path Troubleshooting Ifthe 4352B reading is within the limit the local doubler path is verified 58 Chapter 4 Figure 4 3 43521ase018 Troubleshooting Power Supply Troubleshooting Power Supply Troubleshooting Check the Line Voltage and Fuse Check the main power line cord line fuse actual line voltage to see that they are all correct For more information about the line cord and line fuse see the Power Requirements in Appendix B Check the P
16. Replacement Replaceable Part List Figure 6 5 Top View Miscellaneous Parts 43521ase030 88 Chapter 6 Parts Replacement Replaceable Part List Table 6 4 Top View Miscellaneous Parts Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 61637 3 1 Wire Assy with Power SW 0515 0905 7 2 Screw 2190 0583 9 2 Spring Washer 2 43521 01209 9 1 Angle for Wire Assy 0515 1550 0 2 Screw 3 04192 40002 1 1 Coupler 4 0400 0064 6 2 Bushing 5 43521 25001 9 1 Rod 6 43521 00101 8 1 Chassis 7 43521 00102 9 1 Chassis Sub 8 5041 0564 4 1 Key Cap 9 0515 0889 6 4 Screw 10 0363 0125 0 2 Shield Gasket 152 mm 11 0515 1550 0 6 Screw 12 0515 1550 0 9 Screw 13 0515 2079 0 4 Screw 14 0515 1550 0 4 Screw Chapter 6 89 Figure 6 6 4352 Parts Replacement Replaceable Part List Bottom View Miscellaneous Parts ase036 Table 6 5 Bottom View Miscellaneous Parts Reference Agilent Part Check Qty Description Designation Number Digit 1 0363 0125 0 Shield Gasket 152 mm 2 0515 0889 6 4 Screw 3 0515 2079 0 4 Screw 90 Chapter 6 Parts Replacement Replaceable Part List Figu
17. Signal Test System simplified block diagram Built in 600 2 Oscillator Frequency 4352 VCO PLL Signal Analyzer Power Calibration Data Transfer Switch Control 1 N O Port The 435214 has two signal paths One is the direct path that is from the RF IN port of the 435214 to the RF IN port of the 4352B directly The other is the heterodyne path which downconverts the RF input signal to the proper signal for the input of the 4352B Since the level loss between the RF IN port and RF OUT port of the 43521 is calibrated the power level related measurement such as RF power measurement can be performed properly When the heterodyne path is selected the external signal generator SG is used as the local signal generator for downconversion The frequency doubler in the 43521A doubles the local signal from the SG so that the double frequency of the SG is maximum as the local signal Then the built in 600 MHz oscillator in the 43521A offers the local signal of the 4352B so that the VCO PLL Signal Test system can perform the 12 6 GHz evaluation by using only one 6 GHz SG 74 Chapter 5 Theory of Operation OVERALL OPERATION 43521A BLOCK DIAGRAM The 43521A consists of the following sections Power Supply Sequencer amp I O Digital Control Power Measurement Heterodyne Local Drive 600 MHz OSC Figure 5 2 shows the block diagram of the 43521A Chapter 5 75 Figure 5 2 Theory of Operatio
18. Table 7 1 sequentially Then perform the operational verifications and performance verifications listed in Table 7 1 For the detailed procedure of the adjustments and updating correction constants see Adjustments Chapter For the detailed operational verification procedures see this manual s chapter specified in Table 7 1 For detailed performance verification procedures see Performance Test or Troubleshooting Chapter in this manual Table 7 1 Post Repair Procedures Replaced Adjustments Verification Assembly or Part Correction Constants CC 1 board 600 MHz SAW OSC Frequenccy Check 600 MHz Output Writing Default RF Power Measurement Accuracy Test RF Power Linearity CC 600 MHz OSC Phase Noise Test RF Power Frequency CC System Phase Noise 43521 61625 RF Power Linearity CC RF Power Measurement Accuracy Test Thermometer RF Power Frequency CC 8474C RF Power Linearity CC Check Power Measurement Function Power Detector RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 11742 RF Power Linearity CC Check Power Measurement Function Blocking Capacitor RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 8493B between RF Power Linearity CC Check Power Measurement Function 11742 and 11636B RF Power Frequency CC RF Power Measurement Accuracy Test Fixed Att 3dB Input VSWR Test 8493B between RF Power Linearity CC Check Power Measurement Function
19. Test Troubleshooting Replace the lt faulty Part Post Repair Procedure 43521ase008 Chapter 4 53 Troubleshooting Check Procedure Check Procedure To verify the operation of the 43521A alone perform the following procedures Check LED Front Check Fan Check 600 MHz Output Check Power Measurement Function Check Heterodyne Path Check Local Doubler Path All check procedures except the check LED and Fan needs the 4352B to control the 43521A If the 43521A has passed all of the checks but it still making incorrect measurements or unexpected operations suspect the 4352B Refer to the 4352B Service Manual Check LED Front Turn the 43521 power and watch the LED on the front panel The LED should be lit If case of unexpected results continue with the Power Supply Troubleshooting section Check Fan Turn the 43521A power on and inspect the fan on the rear panel The fan should be rotating and audible If case of unexpected results continue with the Power Supply Troubleshooting section Check 600 MHz Output 1 Connect an N m N m cable between the LO OUT connector of the 435214 and the RF IN connector of the 4352B Connect a BNC cable between the 40 MHz Input of the 435214 and the 40 MHz Output of the 4352B Connect a 15 pin D Sub cable furnished with the 43521 A between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B 2 Press
20. _ N m N m Cable 18cm Pj 4 43521ase002 4 Press Preset to initialize the 4352B then set the control as follows Setting Operation Down converter control ON RF LO DOWNCONV ON off Signal generator max freq 6 GHz RF LO SG MAX FREQ 6 G n Frequency Band 5 4 GHz to 12 6 GHz Meas FREQ BAND 5 4 12 6G 43521A RF attenuator 20 dB Sense Range RF ATTEN 2 0 x1 5 Make the single sweep measurement for the network analyzer 6 Record the maximum value to the performance test record NOTE If the measurement mode is set to Return Loss or Reflection Coefficient at Step 1 perform the following procedure instead of Step 6 a Record either of the following values to the calculation sheet the minimum value of the return loss the maximum value of the reflection coefficient b Calculate the test result according to the calculation sheet then record it in the performance test record 7 Set the 43521A RF attenuator to 0 dB 24 Chapter 2 Performance Test Performance Test 8 Repeat the Step 5 and 6 Chapter 2 25 Performance Test Function Test Function Test Introduction This section provides the test procedures used to verify the 43521A s performance characteristics and functions The function test is recommended to be performed with the 435214 performance test Warm Up Time Allow
21. adjustable wrench to keep the part steady Remove the four screws that secure the angle for AMP to the Chassis Sub Disconnect the SMA connector of the 1250 1159 Adapter from the U Wave Chapter 6 107 Parts Replacement Replacement Procedure amplifier s connector OUT side To loosen the SMA connector grip the flat faces of the adapter with the adjustable wrench to keep the adapter steady Disconnect the WIRE Assy for the amplifier from the A1 J12 connector Remove the two screws that secure the amplifier to the angle for AMP U WAVE MXR 26 5 GHz Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Adjustable Wrench for Coaxial Connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Disconnect the RF Cable 43521 61610 AMP Switch from the Coaxial Switch Disconnect the RF Cable 43521 61611 Mixer Switch from the mixer s connector LO side Remove the two screws that secure the LPF to the Chassis Sub Disconnect the RF Cable 43521 61606 Mixer LPF from the mixer s connector IF side Remove the two screws that secure the mixer to the Chassis Sub Discconet the SMA connector of the 8493B Fixed Attenuator from the mixer s connector RF side To loosen the SMA connector grip flat faces of th
22. measured values frequency and power are within these limits check the signal path between the J4 of the A1 and the LO OUT Front connector The path consists of the RF cable the coaxial switch and the RF cable Chapter 4 63 Troubleshooting Power Measurement Function Troubleshooting adi Power Measurement Function Troubleshooting The power measurement function is shown in Figure 4 7 Figure 4 7 Power Measurement Section Simplified Block Diagram Coaxial Switch PN 33312 60005 from DUT RF IN N 1742A 8493B ATT 11636B 3dB Insertion Loss 7 5dB ep Attenuator 0 35dB A1 board 43521ase014 1 Turn the 43521 A power off and disconnect the RF cable from the Al connector 15 The connector location is shown in Figure 4 8 64 Chapter 4 Figure 4 8 43521ase017 Troubleshooting Power Measurement Function Troubleshooting A1 connector J5 Location m m eu 945 4 Input 8474C s output voltage DC Connect a N N cable between the LO OUT connector and the RF IN connector of the 435214 Connect 15 pin D Sub cable furnished with th
23. or with specific WARNINGS elsewhere in this manual may impair the protection provided by the equipment Such noncompliance would also violate safety standards of design manufacture and intended use of the instrument The Agilent Technologies assumes no liability for the customer s failure to comply with these requirements The Agilent 43521A complies with INSTALLATION CATEGORY II and POLLUTION DEGREE 2 in IEC61010 1 The Agilent 43521A is an INDOOR USE product LEDs in the Agilent 43521A are Class 1 in accordance with IEC60825 1 CLASS 1 LED PRODUCT Ground the Instrument To avoid electric shock the instrument chassis and cabinet must be grounded with the supplied power cable s grounding prong WARNING DO NOT Operate in an Explosive Atmosphere Do not operate the instrument in the presence of inflammable gasses or fumes Operation of any electrical instrument in such an environment clearly constitutes a safety hazard Keep Away from Live Circuits Operators must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel Do not replace components with the power cable connected Under certain conditions dangerous voltage levels may exist even with the power cable removed To avoid injuries always disconnect the power and discharge circuits before touching them DO NOT Service or Adjust Alone Do not attempt internal service or adjustment unless ano
24. path between the mixer IF connector and RF OUT Front connector Normally the signal RF LOx2 goes through the LPF and the signal is amplified by the 0955 0689 Amp gain 19 dB when steps 1 through 4 are performed If the LOx2 and 2 signals not traced check the doubler path Normally the LOx2 signal applied to the mixer LO connector is about 8 dBm when steps 1 through 4 are performed If the RF and RF LOx2 signals are not traced check the path between the mixer RF connector and RF IN Front connector Normally the RF signal applied to the mixer RF connector is more than 18 dBm when steps 1 through 4 are performed Chapter 4 Troubleshooting Performance Function Tests Failure Troubleshooting Performance Function Tests Failure Troubleshooting Perform the following procedure sequentially when any performance function tests fail Perform Adjustments and Correction Constants Table 4 3 gives the recommended adjustments and correction constants data when a performance function test fails If a performance function test fails you should perform the corresponding adjustments or correction constants function as shown in Table 4 3 If the tests still fail refer to Table 4 4 and check the probable faulty assembly or section Note that this table lists some typical cases In a few cases other assemblies orr parts may actually be faulty Table 4 3 Troubleshooting Information for Performance Function Tests F
25. see the HP VEE for Windows Installing Adjustment Program into Your PC preliminary 1 Make a copy of the 43521A adjustment program named ADJ43521A EXE directory of your hard disk drive 2 Double click the filename on the Windows Explorer to start extracting the self extracting archive 3 You will be prompted to enter directory name for installing the program files Click Unzip to use default directory C ADJ43521A 4 Confirm the message that you successfully extract the files and click OK and Close Equipment Setup Performing adjustments requires the system described in this section The Hardware Setup is shown in Figure 3 1 40 Chapter 3 Adjustment Preparation for using the Adjustment Program Figure 3 1 Adjustment Hardware Setup PERSONAL COMPUTER Power Meter SG Sweeper GP IB Cables o0 Lin Og CO EIE ELLE OOOO OOOO OOOOOO OO OO poga u ooo o000 000 oo maga ooo OO m00 Cac ma i SG Sweeper 0000 0000 oo LOIN I oo 20 Se Oooo OOOO agaaga OOOO OOO 1 eeoege KI BF L er 2 15 Pin D sub Cable RFOUT
26. signal The signal is a low phase noise signal To improve the frequency accuracy of the 600 MHz signal the 40 MHz signal from the rear panel of the 4352B is inputted It provides phase locking for synchronizing the 600 MHz signal to the 40 MHz signal 78 Chapter 5 Parts Replacement This chapter contains the 43521 A s replaceable parts list and the procedure to replace its assemblies 79 Parts Replacement Replaceable Part List Replaceable Part List Ordering Information To order part listed in the replaceable part lists quote the Agilent Technologies part number with a check digit indicate the quantity required and address the order to the nearest Agilent Technologies office The check digit will ensure accurate and timely processing of the order To order a part not listed in the replaceable part table include the instrument model number the description and function of the part and the quantity of parts required Address the order to the nearest Agilent Technologies office Direct Mail Order System Within the USA Agilent Technologies can supply parts through a direct mail order system There are several advantages to this system Direct ordering and shipping from the Agilent Technologies Parts Center in Mountain View California No maximum or minimum on any mail order there is a minimum order amount for parts ordered through a local Agilent Technologies office when the orders require billing and in
27. 0 x1 Chapter 4 67 Troubleshooting Heterodyne Path Troubleshooting 4 Setsignal generators as follows Instrument Setting RF signal generator Freq 3 GHz Power 0 dBm LO signal generator Freq 2 376 GHz Power 10 dBm 5 Check signals from the mixer IF output using a spectrum analyzer 68 If three spectrums RF LO and RF LO are traced on the analyzer s display but the result of the Check Heterodyne Path fails check the path between the mixer IF output and RF OUT Front connector Normally the signal RF LO goes through the LPF and the signal is amplified by the 0955 0689 Amp gain 19 dB when steps 1 through 4 are performed If the LO and RF LO signals are not traced check the path between the mixer LO connector and LO IN Front connector Normally the LO signal applied to the mixer LO connector is about 8 dBm when steps 1 through 4 are performed If the RF and RF LO signals are not traced check the path between the mixer RF connector and RF IN Front connector Normally the RF signal applied to the mixer RF connector is more than 18 dBm when steps 1 through 4 are performed Chapter 4 Figure 4 11 43521ase012 Troubleshooting Local Doubler Path Troubleshooting Local Doubler Path Troubleshooting The local doubler path is shown in Figure 4 11 Local Doubler Path Simplified Block Diagram RF 0955 0665 IF Coaxial Switch 33312 60005 from Lo IN 0955 1114
28. 0 dB 43521 Noise Attenuator 0 dB Averaging ON 30 Operation Meas INST TYPE VCO ANALY Meas PHASE NOISE RF LO DOWNCONV ON off RF LO LO CONTROL auto MAN RF LO SG MAX FREQ 6 G n Meas FREQ BAND 2 4 6 6G Sense Range RF ATTEN 2 0 1 Sense Range NOISE ATTEN 0 x1 Bw Avg AVERAGING ON off Chapter 2 Performance Test Function Test 3 Setthe control of each signal generator as follows Signal Generator Frequency Power LO Signal Generator 2 1 GHz 10 dBm RF Signal Generator 2 724 GHz 0 dBm Press Trigger SINGLE to make a measurement Press Menu MARKER to indicate the maker Press 9 M u to show the phase noise at the 9 MHz offset Record the reading in the calculation sheet Press Meas FREQ BAND 5 4 12 6G to change the frequency range Set the control of each signal generator as follows Signal Generator Frequency Power LO Signal Generator 1 811 GHz 10 dBm RF Signal Generator 2 998 GHz 0 dBm 10 Perform Step 4 to Step 7 11 Record the test result into the performance test record according to the calculation sheet Chapter 2 31 Performance Test Calculation Sheet Calculation Sheet Performance Test RF Power measurement Accuracy Test RF Attenuator 20 dB Level Frequency Power Meter 4352B
29. 07 U WAVE AMP 18 GHz Replacement U WAVE AMP 18 GHz Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Adjustable Wrench for Coaxial Connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Remove the two screws that secure the plate for Step Att to the Chassis Sub Disconnect the SMA connector of the 1250 1159 Adapter from the U Wave amplifier s connector IN side and the SMA connector of the 1250 1159 Adapter from the 11636B Power Divider s connector To loosen the SMA connector grip the flat faces of the adapter with the adjustable wrench to keep the adapter steady Remove the four screws that secure the angle for AMP to the Chassis Sub Disconnect the SMA connector of the 1250 1159 Adapter from the U Wave amplifier s connector OUT side To loosen the SMA connector grip the flat faces of the adapter with the adjustable wrench to keep the adapter steady Disconnect the WIRE Assy for the amplifier from the A1 J12 connector Remove the two screws that secure the amplifier to the angle for AMP Appendix A 131 Manual Changes Change 1 Pages 112 Table 7 1 Post Repair Procedures Change the table as follows Table A 7 Post Repair Procedures Replac
30. 11 33312 60005 3 3 COAX IAL SWITCH 12 9135 0229 1 1 U WAVE LPF 13 8474C 6 1 DETECTOR 14 11742A 8 1 BLOCKING 15 11636 1 1 POWER DIVIDER 16 0955 0689 6 1 U WAVE AMP 700MHz Appendix A 123 Manual Changes Change 1 Page 84 Figure 6 3 Top View Cables and Wires 1 2 Replace the figure with the following figure Figure A 6 Top View Cables and Wires 1 2 J3 J4 J9 J10 J11 J5 J6 43521ase035 124 Appendix A Manual Changes Change 1 Page 85 Table 6 2 Top View Cables and Wires 1 2 Change the table as follows Table A 3 Top View Cables and Wires 1 2 Reference Agilent Part Check Qty Description Designation Number Digit 43521 61620 4 1 WIRE ASSY J3 43521 61622 6 1 RF CABLE ASSY 43521 61623 7 1 RF CABLE ASSY J5 43521 61624 8 1 RF CABLE ASSY J6 43521 61625 9 1 WIRE ASSY J7 43521 61626 0 1 WIRE ASSY Jo 43521 61628 2 1 WIRE ASSY Yellow J10 43521 61629 3 1 WIRE ASSY Green J11 43521 61630 6 1 WIRE ASSY Blue J12 43521 61633 9 1 WIRE ASSY J13 43521 61631 7 1 WIRE ASSY J14 43521 61632 8 1 WIRE ASSY Appendix A 125 Manual Changes Change 1 Page 86 Figure 6 4 Top View Cables and Wires 2 2 Replace the figure with the following figure Figure A 7 Top View Cables and Wires 2 2 43521ase033 126 Appendix A Manual Changes Change 1 Page 87 Table 6 3 Top
31. 11636B and SW1 RF Power Frequency CC RF Power Measurement Accuracy Test Fixed Att 34 Input VSWR Test 11636B RF Power Linearity CC Check Power Measurement Function Power Divider Power Frequency CC Check Heterodyne Path RF Power Measurement Accuracy Test Input VSWR Test 33321 60059 RF Power Linearity CC Check Heterodyne Path Step Att RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 112 Chapter 7 Post Repair Procedures POST REPAIR PROCEDURES Table 7 1 Post Repair Procedures Replaced Adjustments Verification Assembly or Part Correction Constants CC 5088 7049 RF Power Linearity CC Check Heterodyne Path Limiter Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 0955 1115 RF Power Linearity CC Check Heterodyne Path Amplifier RF Power Frequency CC 8493 between Amp RF Power Frequency CC and Mixer Fixed Att 3dB RF Power Measurement Accuracy Test Input VSWR Test System Phase Noise Test Check Heterodyne Path 0955 0665 Power Frequency CC Check Heterodyne Path Mixer 9135 0229 RF Power Frequency CC Check Heterodyne Path Low Pass Filter 0955 0689 RF Power Frequency CC Check Heterodyne Path Amplifier System Phase Noise Test 0955 1114 RF Power Frequency CC Check Local Doubler Path Amplifier System Phase Noise Test 0955 0693 RF Power Frequency CC Check Local Doubler Path Doubler System Phase Noise Te
32. 222 4 4 ete pr epe pr RU RE S 105 Side Cover Removal RN TERR NT ERN NT ea ee A TR 105 Front Panel Removal u ex epe RI pe fe BC GAs 106 Re r Panel Removal eL EAE met E Ee RR 106 Step Attenuator 1 2 1 44 4 107 U WAVE AMP 18 GHz Replacement 1 107 U WAVE 26 5 GHz 108 Contents U WAVE 20 GHz 108 U WAVE FREQ DBLR 1 109 U WAVE AMP 700 MHz Replacement 109 7 Post Repair Procedures POST REPAIR PROCEDURES ies ee WEG pusan asya UR IECIT 112 A Manual Changes Manual Changes HERR HERE REOS OUR ORDER ROSEO D 116 Change T 4s wena epp nube ah dee eh aaah ae Scat aie eb 117 Page 57 Check Heterodyne 2 117 Page 57 Check Local Doubler 1 117 Page 64 Figure 4 7 Power Measurement Section Simplified Block Diagram 118 Page 66 Figure 4 9 Heterodyne Path Simplified Block Diagram
33. 7 1 Cover Bottom Chapter 6 93 Parts Replacement Replaceable Part List Table 6 9 Chassis Parts Reference Agilent Part Check Qty Description Designation Number Digit 1 5002 3736 6 1 Side Cover 2 08751 07001 5 4 Gasket 3 5063 9210 1 1 Strap Handle 4 5041 9186 4 1 Front 5 5041 9187 5 1 6 0515 1132 4 2 Screw M5 7 5002 3959 5 1 Side Cover 8 5041 9167 1 4 Foot 9 1460 1345 5 2 Wire Form 10 5041 9188 6 4 Standoff 11 0515 1232 5 4 Screw M3 5 Chapter 6 95 Parts Replacement Replaceable Part List Figure 6 11 Chassis Parts 43521 037 Table 6 10 Chassis Parts Reference Agilent Part Check Qty Description Designation Number Digit 1 5021 5832 7 2 Side Strut 2 5021 5802 1 1 Rear Frame 3 0515 1668 1 8 Screw 4 5022 1187 9 1 Front Frame 96 Chapter 6 Parts Replacement Replaceable Part List Figure 6 12 Step Attenuator Assembly 43521ase049 Table 6 11 Step Attenuator Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 33321 60059 8 1 Step ATT 2 43521 00607 9 1 Plate for Step ATT 3 2200 0142 0 2 Screw 4 0515 1550 0 2 Screw M3 5 3050 0891 7 2 Washer Chapter 6 97 Parts Replacement Replaceable Part List Figure 6 13 U WAVE AMP 18 GHz Assembly 43521ase045 Table 6 12 U WAVE AMP 18 GHz Assembly Reference Agilent Part Check Qty Descr
34. A 4418 or E4419A B Power Meter No substitute E4419A B 1 Power Sensor Freq Range 3 GHz to 12 GHz 8481A 2 BA Power 15 dBm to 15 dBm Power Sensor No substitute E4412A 1 Power Amplifier Gain 35 dB 83020A 1 BA Freq Range 3 GHz to 12 GHz DC Power Supply No substitute 87422A for 83020A 1 P A Network Analyzer Freq 2 GHz to 13 GHz 8719D 8720D 1 or 8722D Calibration Kit Freq 2 GHz to 13 GHz 85054D or 85054B 1 Step Attenuator Attenuation Range 0 dB to 70 dB 8495H 1 Step 10 dB Freq Range 3 GHz to 12 GHz Step Attenuator Attenuation Range 0 dB to 11 dB 8494H 1 BA Step 1 dB Freq Range 3 GHz to 12 GHz Att Switch Driver No substitute 11713A 1 Power Splitter Freq Range 3 GHz to 12 GHz 11667A 1 2 Way 50 2 GHz Lowpass Filter Insertion Loss 0 5 dB p n 0955 0634 1 VSWR lt 1 24 14 Chapter 1 General Information Require Equipment Table 1 1 Recommended Test Equipment Equipment Critical Specifications Recommended Model Qty Use Attenuator Pad Impedance 50 O 7mm m 7mm f 8493B Opt 006 1 6 dB 3 GHz to 12 GHz Blocking Capacitor No substitute 11742A 1 Spectrum Analyzer Freq Range 100 MHz to 5 GHz 8595 1 Cable N m N m 18 cm 8120 4387 2 P A T N m N m 61 cm 11500B 1 P A T BNC m BNC m 61 cm 8120 1839 2 P A T BNC m BNC m 122 cm 8120 1840 1 P A T Precision N m Precison 11500C 2 P A N m 61cm T 3 5mm m 3 5mm m
35. A eS ER ERE VENE 48 Procedure cepe vei eee rete Ee ere v peer E EE 49 4 Troubleshooting TROUBLESHOOTING SUMMARY 32 Check Procedure io E Oeste due tad e beet 54 Check LED Pron are s ERA EHE OL CPC RR UAE INTUS 54 Check Pam obe Eb bas ist EE aped debe debe eeu dde ies 54 Check 600 MHZ Output sus peer Per EP DEPT pp hee bb pe aed 54 Check Power Measurement 2 55 Check Heterodyne Path srren sive odie ee RES Shs ie due ne a mou EO Pe ERES ORDER ee 55 Check Local Doubler y s ce ba tig by old pune E Ret em 57 Power Supply Troubleshooting 1 2 59 Check the Line Voltage and 59 Check the Power Supply Unit 2 2 59 Check the Power Supply on the Al board 60 600 MHz OSC Troubleshooting 62 Check the 600 MHz Output on the Al 62 Power Measurement Function Troubleshooting 64 Heterodyne Path Troubleshooting 66 Local Doubl
36. Agilent 43521A Downconverter Unit Service Manual First Edition SERIAL NUMBERS This manual applies directly to instruments that have the serial number JP1KG 143 146 and JP1KG00150 or above For additional important information about serial numbers see Appendix A ev Agilent Technologies Part No 43521 90100 February 2000 Printed in Japan Notices The information contained in this document is subject to change without notice This document contains proprietary information that is protected by copyright rights are reserved No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Agilent Technologies Agilent Technologies Japan Ltd Component Test PGU Kobe 1 3 2 Murotani Nishi Ku Kobe shi Hyogo 651 2241 Japan Copyright O Agilent Technologies Japan Ltd 2000 Manual Printing History The manual s printing date and part number indicate its current edition The printing date changes when a new edition is printed Minor corrections and updates incorporated in reprints do not necessitate a new printing date The manual part number changes when extensive technical changes are incorporated Feb 2000 First Edition Safety Summary The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions
37. ETT PACKARD JAPAN JP1KE12345 MADE IN JAPAN 33 CD000A01 116 Appendix A Manual Changes Change 1 Change 1 Change the description according to pages 112 through 133 Page 57 Check Heterodyne Path Replace the description for the step 5 with the following description 5 Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF and press Meas RF POWER then check that the 4352B reading is more than 2 dBm If the 4352B reading is not within the limit continue with Heterodyne Path Troubleshooting e Ifthe 4352B reading is within the limit the heterodyne path is verified Page 57 Check Local Doubler Path Replace the description for the step 5 with the following description 5 Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF and press Meas RF POWER then check that the 4352B reading is more than 2 dBm If the 4352B reading is not within the limit continue with Local Doubler Path Troubleshooting Ifthe 4352B reading is within the limit the local doubler path is verified Appendix A 117 Figure 2 Manual Changes Change 1 Page 64 Figure 4 7 Power Measurement Section Simplified Block Diagram Replace the figure with the following figure Power Measurement Section Simplified Block Diagram from DUT RF IN Coaxial Switch PN 33312 60005 1742A 8493 Thermo ATT 6dB
38. F LO signals are not traced check the path between the mixer RF connector and RF IN Front connector Normally the RF signal applied to the mixer RF connector is more than 13 dBm when steps 1 through 4 are performed Appendix A 119 Manual Changes Change 1 Page 70 Local Doubler Path Troubleshooting Replace the description for the step 5 with the following description 5 Check signals from the mixer IF output using a spectrum analyzer 120 If three spectrums RF LOx2 and RF LOx2 are traced on the analyzer s display but the result of the Check Local Doubler Path fails check the path between the mixer IF connector and RF OUT Front connector Normally the signal RF LOx2 goes through the LPF and the signal is amplified by the 0955 0689 Amp gain 19 dB when steps 1 through 4 are performed If the LOx2 and 2 signals not traced check the doubler path Normally the LOx2 signal applied to the mixer LO connector is about 8 dBm when steps 1 through 4 are performed If the RF and RF LOx2 signals are not traced check the path between the mixer RF connector and RF IN Front connector Normally the RF signal applied to the mixer RF connector is more than 13 dBm when steps 1 through 4 are performed Appendix A Page 76 Figure 5 2 43521 Block Diagram Replace the figure with the following figure Figure A 4 43521A Block Diagram RF IN N 1742A 8493 1
39. G Sweeper goon gt ooo ug ooo OO 00090 oO ooo ID O 40 2 3 5mm m 3 5mm m Cable Input 83020A 43521A RF IN FOUT REIN oooo Attenuator N m N m Adapter 200000 O00 0000 RF Power Sensor 4 J Carie 3 5mm m N f Adapter Power Splitter 11742A c a gt To EXT REF ES EEE Eds m Precision N m Precision N m Cable Precision N m Precision N m Cable Power Meter Step Attenua 43521ase001 Perform the zero adjustment and the calibration for the power meter 2 Connect the equipment as shown in Figure 2 1 3 Press Preset to initialize the 4352B Then set the controls as follows 20 Chapter 2 Setting Instrument type VCO Tester Measurement mode RF Power Down converter control ON LO control Signal generator type 17 Signal
40. Gain 12dB 0955 0693 Conversion Loss 12dB Fundamental Isolation 25dB 1 Turn the 43521 power off disconnect the RF cable from the mixer PN 0955 0665 IF output connector The connector location is shwn in Figure 4 10 2 Connect the equipment as shown in Figure 4 2 and connect a 15 pin D Sub cable furnished with the 43521 A between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B 3 Turn the 43521 power on and press Preset to initialize the 4352B then set the 43521A 4352B as follows Setting Instrument type VCO Tester Measurement mode FREQUENCY Down converter control ON Signal Generator max freq 3 GHz Frequency Band 2 5 3 6 GHz LO control Manual 43521A RF Attenuator 20 dB Chapter 4 Operation Meas INST TYPE VCO TESTER Meas FREQUENCY RF LO DOWNCONV ON off RF LO SG MAX FREQ 3 G n Meas FREQ BAND 3 1 6 6G RF LO LO CONTROL auto MAN Sense Range RF ATTEN 2 0 x1 69 Troubleshooting Local Doubler Path Troubleshooting 4 Setsignal generators as follows Instrument Setting RF signal generator Freq 4 6 GHz Power 0 dBm LO signal generator Freq 1 988 GHz Power 10 dBm 5 Check signals from the mixer IF output using a spectrum analyzer 70 If three spectrums RF LOx2 and RF LOx2 are traced on the analyzer s display but the result of the Check Local Doubler Path fails check the
41. Linearity Correction Constants Setup BNC m BNC m Cable 122cm To 10MHz OUT To 40MHz Output To EXT REF SG Sweeper G mua gt oo 200 Hood DO 000 oo coco ooo 9 OO OOOO init CIC Oooo OOOO OOOO OOOO OOOO RF 8 uuu 0000 N m N m Cable 18cm To 40MHz Input N m N m Cable 18cm 3 5mm m 3 5mm m Cable SG Sweeper ur B 43521A RRIQUT 4 RF IN Y oo L To EXT REF Attenuator c ccc N m N m Adapter EEE oooooo 2000 Ooo RF Power Sensor V wu 11742A gt Power Splitter VAR Adapter Cable 3 5mm m N f Adapter Q gt 2GHz Lowpass Filter E S Precision N m Precision N m Cable Precision N m Precision N m Cable uu Power Meter 525 3 5mm m N f Adapter E Step Attenuator 43521ase011 4 Follow the adjustment program instruction to update the correction constants Chapter 3 47 Adjustment RF Power Frequency Response Correction Constants RF Power Frequency Response Correction Constants The purpose of this
42. MHz 0 40 MHz Input from 4352B 43521ase015 1 Turn the 43521 power off and disconnect the RF cable frome the A1 connector 14 The connector location is shown in Figure 4 6 62 Chapter 4 Troubleshooting 600 MHz OSC Troubleshooting Figure 4 6 A1 connector J4 Location 600MHz Output 43521ase016 2 Connect a 3 5mm m 3 5mm m cable 3 5mm f N m adapter between the J4 connector of the A1 and the RF IN connector of the 4352B Connect a BNC Cable between the 40 MHz Input of the 43521A and the 40 MHz Output of the 4352B 3 Turn the 43521A power on and press RF LO and then confirm that the 435214 is not connected DOWNCONV on OFF 4 Press Meas INST TYPE INST TYPE VCO TESTER and FREQUENCY in this order FREQUENCY is underlined which indicates that the frequency measurement in the tester mode is selected 5 Check that the measured value on the 4352B s screen is 600 MHz 64 kHz 6 Press MEAS RF POWER 7 Check that the measured value on the 4352B s screen is 8 dBm or more Ifthe measured values frequency and power are not within these limits replace the A1 board Ifthe
43. Operation Instrument type VCO Analyzer Meas INST TYPE VCO ANALY Measurement mode Phase Noise Meas PHASE NOISE Down converter control ON RF LO DOWNCONV ON off LO control Manual RF LO LO CONTROL auto MAN Frequency Band except 10 MHz 3 GHz Meas FREQ BAND except 10M 3G 435214 RF Attenuator 5 dB Sense Range RF ATTEN 5 1 43521A Noise Attenuator 0 dB Sense Range NOISE ATTEN 0 x1 Averaging On Bw Avg AVERAGING ON off 3 Set the frequency of the signal generator s output to 576 1 MHz and the power to 10 dBm 4 Press Trigger SINGLE to make a measurement 5 Press Menu MARKER to indicate the maker 6 Press 1 k m to show the phase noise at 1 kHz offset 7 Record the reading into the calculation sheet 8 Perform Step 7 at all offset in the following table Offset 1 kHz 10 kHz 100 kHz 1 MHz 9 Record the test result in the performance test record according to the calculation sheet 28 Chapter 2 Performance Test Function Test System Phase Noise Test This test checks the phase noise of the 43525 with 43521A Performance Characteristic 9 MHz Offset lt 133 dBc Freq Band 2 4 to 6 6 GHz lt 132 dBc Freq Band 5 4 to 12 6 GHz Required Equipment Description Recommended Model VCO PLL Signal Analyzer 4352B LO Signal generator 8664A 8665A B or 8642B RF Signal generator 8664A or 8665A B N m N m Ca
44. RT connector of the 43521A and the I O PORT of the 4352B Press RF LO and then DOWNCONV on OFF to toggle it DOWNCONV ON off Press Meas and FREQ BAND xx xx in this order and then press a key other than FREQ BAND 10M 3G on the frequency band menu The selected frequency band softkey is underlined Press Sens Range and RF ATTEN in this order Use 1 and or the rotary knob to set the attenuator to 20 dB Press System SERVICE MENU and SERVICE MODES in this order The 4352B enters into the service mode and displays the measured power value The value measured with the power measurement function of the 435214 is displayed Use the power value measured with the 4352B as Pa Check that the difference between Pb recorded in the Check 600 MHz Output section and Pa is 2 dB or less Ifthe difference is not within the limit continue with Power Measurement Function Troubleshooting If the difference is within the limit the power measurement function is verified Check Heterodyne Path The message CAUTION Set RF ATT 5dB Less could be displayed on the 4352B s display during performing this check In this check the corrective action of the message is not needed 1 Connect the equipment as shown in Figure 4 2 and connect a 15 pin D Sub cable furnished with the 43521 between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B Chapter 4 55 Troubleshooting Check Procedure Figur
45. Test Result Reading a Reading b a b 15 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB 5 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB 0 dBm 3 GHz dBm dBm dB 4 GHz dBm dBm dB 5 GHz dBm dBm dB 6 GHz dBm dBm dB 7 GHz dBm dBm dB 8 GHz dBm dBm dB 9 GHz dBm dBm dB 10 GHz dBm dBm dB 11 GHz dBm dBm dB 12 GHz dBm dBm dB 5 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB 15 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB 32 Chapter 2 Performance Test Calculation Sheet RF Attenuator 0 dB Level Frequency Power Meter 4352B Test Result Reading a Reading b a b 5 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB 15 dBm 4 GHz dBm dBm dB 8 GHz dBm dBm dB 12 GHz dBm dBm dB Input VSWR Test RF Return loss Maximum value Test Result Attenuator Minimum Value a Reflection 1 a 1 a Coefficient b 1 10 b 20 1_10 b 20 20 dB dB 0 dB dB Chapter 2 33 Performance Test Calculation Sheet Function Test 600 MHz SAW OSC Phase Noise Test Offset 4352B reading Performance Characteristic 1 kHz dBc 105 dBc 10 kHz dBc 130 dBc 100 kHz dBc 140 dBc 1 MHz dBc 148 dBc NOTE This test fails if the reading is above the performance characteristic in any test point System Phase Noise Test Frequency Band 4352B Reading Perfor
46. View Cables and Wires 2 2 Change the table as follows Table A 4 Top View Cables and Wires 2 2 Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 61635 1 2 RF CABLE ASSY 2 43521 61603 3 1 RF CABLE ASSY SRGD Divider Switch 3 43521 61605 5 1 RF CABLE ASSY SRGD RF IN Switch 4 43521 61604 4 1 RF CABLE ASSY SRGD RF OUT Switch 5 43521 61606 6 1 RF CABLE ASSY SRGD Mixer LPF 6 43521 61607 7 1 RF CABLE ASSY SRGD Switch Switch 7 43521 61601 1 1 RF CABLE ASSY SRGD LO IN Switch 8 43521 61602 2 1 RF CABLE ASSY SRGD LO OUT Switch 9 43521 61608 8 1 RF CABLE ASSY SRGD DBLR Switch 10 43521 61609 9 1 RF CABLE ASSY SRGD DBLR 1 43521 61610 2 1 CABLE ASSY SRGD AMP Switch 12 43521 61611 3 1 RF CABLE ASSY SRGD Mixer Switch Appendix A 127 Figure 8 Manual Changes Change 1 Page 97 Figure 6 12 Step Attenuator Assembly Replace the figurewith th efollowing figure Step Attenuator Assembly 43521ase041 Page 97 Table 6 11 Step Attenuator Assembly Change the table as follows Table 5 Step Attenuator Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 33321 60059 8 1 Step ATT 2 43521 00604 6 1 Plate for Step ATT 3 2200 0142 0 2 Screw 4 0515 1550 0 2 Screw M3 128 Appendix A Manual Changes Change 1 Page 103 Figure 6 18 DETECTOR Assembly Replace the
47. ailure 1 First Failed Test Adjustments Correction Constants CC RF Power Measurement Accuracy RF Power Linearity CC RF Power Frequency CC Input VSWR None 600 MHz OSC Phase Noise None System Phase Noise None Table 4 4 Troubleshooting Information for Performance Function Tests Failure 2 Failed Test Probable Faulty assembly section RF Power Measurement Accuracy Alboard assembly RF Power Measurement section Thermometer Input VSWR Path between RF IN and Input connector of Amp PN 0955 1115 Path between RF IN and 8474C 600 MHz OSC Phase Noise 1 board assembly System Phase Noise Amplifier of Heterodyne Path PN 0955 1115 or 0955 0689 Amplifier of Doubler Path PN 0955 1114 Chapter 4 71 Troubleshooting Performance Function Tests Failure Troubleshooting 72 Chapter 4 Theory of Operation This chapter describes the general overall operation of the 43521A Detailed component level circuit theory is not provided in this manual 73 Figure 5 1 Signal Generator 6 0GHz 8665B Opt004 43521ase019 Theory of Operation OVERALL OPERATION OVERALL OPERATION The 435214 is used as part of the 43528 VCO PLL Signal Test System Figure 5 1 is a simplified block diagram of the VCO PLL Signal Test System including the 43521A Using the 43521 expands the maximum frequency of the VCO PLL Signal Test system to 12 6 GHz VCO PLL
48. and other customer assistance agreements are available for Agilent Technologies products For any assistance contact your nearest Agilent Technologies Sales and Service Office Addresses are provided at the back of this manual Typeface Conventions Bold Boldface type is used when a term is defined For example icons are symbols Italic Italic type is used for emphasis and for titles of manuals and other publications Hardkey Indicates a hardkey labeled Softkey Indicates a softkey labeled Softkey Hardkey Softkey1 Softkey2 Indicates keystrokes Hardkey Softkey1 Softkey2 Contents 1 General Information Organization of Service 12 Instruments Covered by This Manual 13 Require Equipment did erm OPE Sr IRE 14 2 Performance Test Performance Test orsus 18 Introduction Wes bw e ebur be be 18 RF Power Measurement Accuracy Test 19 Input VSWR bd aypuy EE IE FE PEU Uus us nece 23 Punctron Test datant s OE d E E EAL ats Co 26 Introduction ix xbv PRECES RE EM NR bx eq ge ie 26 Warm Up Im
49. arm up for at least 30 minutes before you execute any of the performance tests Ambient Conditions Perform all performance tests in ambient conditions of 23 C 5 C lt 70 RH Performance Test Interval The performance test should be performed periodically The recommended test interval is 12 months The test interval depends on maintenance of use and the environmental conditions under which the instrument is used You may find that the test interval could be shortened or lengthened however such a decision should be based on substantial quantitative data Performance Test Record and Calculation Sheet Performance test record lists all test points acceptable test limits test result entry columns and measurement uncertainties The listed measurement uncertainties are valid only when the recommended test equipment is used The calculation sheet is used as an aid for recording raw measurement data and for calculating the performance test results The procedure for using the calculation sheet and performance test record is 1 Photo copy the calculation sheet 2 Follow the performance test procedure and record the measurement values etc in the specified column on the calculation sheet 3 Calculate the test result using the appropriate equation given on the calculation sheet and record the test result into the Test Result column of the performance test record 18 Chapter 2 Performance Test Performance Test RF P
50. ation Number Digit 43521 61620 4 1 WIRE ASSY J3 43521 61622 6 1 RF CABLE ASSY 14 43521 61623 7 1 RF CABLE ASSY J5 43521 61624 8 1 RF CABLE ASSY J6 43521 61625 9 1 WIRE ASSY J7 43521 61626 0 1 WIRE ASSY 19 43521 61648 6 1 WIRE ASSY Yellow J10 43521 61629 3 1 WIRE ASSY Green Jil 43521 61630 6 1 WIRE ASSY Blue 12 43521 61633 9 1 WIRE ASSY J13 43521 61631 7 1 WIRE ASSY J14 43521 61632 8 1 WIRE ASSY Chapter 6 85 Parts Replacement Replaceable Part List Figure 6 4 Top View Cables and Wires 2 2 43521ase029 86 Chapter 6 Parts Replacement Replaceable Part List Table 6 3 Top View Cables and Wires 2 2 Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 61635 1 2 RF CABLE ASSY 2 43521 61645 3 1 RF CABLE ASSY SRGD Divider Switch 3 43521 61643 1 1 RF CABLE ASSY SRGD RF IN Switch 4 43521 61604 4 1 RF CABLE ASSY SRGD RF OUT Switch 2 43521 61606 6 1 RF CABLE ASSY SRGD Mixer LPF 6 43521 61607 7 1 RF CABLE ASSY SRGD Switch Switch 7 43521 61601 1 1 RF CABLE ASSY SRGD LO IN Switch 8 43521 61602 2 1 RF CABLE ASSY SRGD LO OUT Switch 9 43521 61608 8 1 RF CABLE ASSY SRGD DBLR Switch 10 43521 61609 9 1 RF CABLE ASSY SRGD AMP DBLR 1 43521 61610 2 1 RF CABLE ASSY SRGD AMP Switch 12 43521 61611 3 1 RF CABLE ASSY SRGD Mixer Switch Chapter 6 87 Parts
51. ble 18 cm p n 8120 4387 2ea N m N m Cable 61 cm 11500B or part of the 11851B 2ea BNC m BNC m Cable 61 cm p n 8120 1839 2ea NOTE The message CAUTION Set RF ATT 5dB Less could be displayed on the 4352B s display during performing this test In this test the corrective action of the message is not needed Chapter 2 29 Performance Test Function Test Procedure Figure 2 4 System Phase Noise Test Setup To EXT REF BNC m BNC m Cable 0000 0000 To 40MHz n Output BNO m BNC m Cable N m N m Cable m N m Cable 7 RF SG Sweeper OO OOO DD Oooo D DJ 43521A To 10MHz OUT LO SG Sweeper So mua me 2 conne 9 gt SG 5 maman 9 F OEI 2m0000 Cable 43521ase003 To 40MHz OO OOO OOOO Input oo e 2000000 21 N m N m Cable 1 Connect the equipment as shown in Figure 2 4 2 Press Preset to initialize the 4352B then set the control as follows Setting Instrument type VCO Analyzer Measurement mode Phase Noise Down converter control ON LO control Manual Maximum SG Frequency 6 GHz Frequency Band 2 4 to 6 6 GHz 43521A Attenuator 2
52. dures to isolate the faulty part Theory of Operation explains the overall operation of the 43521A Parts Replacement provides the replaceable part list and the procedure to replace its assemblies Post Repair Procedures contains the table of related service procedures It is a table of adjustments and verification procedures to be performed after repair or replacement of each part Appendices contains manual change information required to make this manual compatible with earlier shipment configurations of the 43521A and power requirements of the 43521A Chapter 1 Figure 1 1 General Information Instruments Covered by This Manual Instruments Covered by This Manual Agilent Technologies uses a two part ten character serial number label See Figure 1 1 attached to the instrument s rear panel The first five characters are the serial prefix and the last five digits are the suffix Serial Number Label Agilent Technologies Japan Ltd SER NO JP1KG12345 AK MADE IN JAPAN 33 428Ta0j048 An instrument manufactured after the printing date of this manual may have serial number prefix that is not listed on the title page This unlisted serial number prefix indicates the instrument is different from those described in this manual The manual for this new instrument may be accompanied by a yellow Manual Changes supplement or have a different manual part number This sheet contains change informati
53. e ul hr pee Tate ERE Fede EPI Stes 26 Ambient Condition scr chuqa ha UT eT ARRA EE E ERROR EATER 26 600 MHz SAW OSC Phase Noise 27 System Phase Noise p EUR nb UE nb bebe Rb 29 Calculation Sheet oett E PEN RE 32 Performance Test LE EI eU Ue d tC E eben E ER CES 32 Function Test de ERE y Ea USA E UR RE ke ce Peete Poet EK CUE Se BE ER 34 Performance Test Record es pL RR wee PVP dias be ear Sie PE RVERUOPS PP VE qe 35 RF Power Measurement Accuracy Test 35 Input VSWR Test EUER PE RP cU debeo e fie a ne Con 36 Eunction Test ReCord CERO 36 600 MHz SAW OSC Phase Noise 36 System Phase Noise Test accion pos etr Ghee OD sate hes danses 36 3 Adjustment Safety ConsideratiODS ce roo UR RN Ree E a eR e pg Apt 38 Required Controller rrer on Ea rene ERES EUER ns usu SUS lQ 38 Warm up for Adjustment 2 22 4 38 Required Equipment s merope here REPOS ne Dingue 38 Order of Adjustment p Dp E PARS Rp huq CPC CP ERE Ee 39 Prepara
54. e 4 2 Heterodyne Path Local Doubler Path Check Setup To EXT REF Inpu BNC m BNC m Cable T 40 2 n Output nnm ooo Ea au uuu ri moon moa Lc OC aaa 0000 0000 RFIN LOIN Cable Cable I RF SG Sweeper LO SG Sweeper l o_o oo popor gam 9 pu Go Goo soa 40MHz OO OOO ooo Input oo 0000 2000000 kd wi OOF 000 OOOO Ope oOo OOOOH e Cable N m N m Cable 43521855003 2 Press Preset to initialize the 4352B then set the 43521A 4352B as follows Setting Operation Instrument type VCO Tester Meas INST TYPE VCO TESTER Measurement mode FREQUENCY Meas FREQUENCY Down converter control ON RF LO DOWNCONV ON off Signal Generator max freq 3 GHz RF LO SG MAX FREQ 3 G n Frequency Band 2 5 3 6 GHz Meas FREQ BAND 2 5 3 6G LO control Manual RF LO LO CONTROL auto MAN 43521A RF Attenuator 20 dB Sense Range RF ATTEN 2 0 x1 3 Set signal generators as follows Instrum
55. e 43521A between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B Turn the 43521 power on and press RF LO and then DOWNCONV on OFF to toggle it DOWNCONV ON off Press Meas and FREQ BAND xx xx in this order and then press 2 5 3 6G on the frequency band menu The selected frequency band softkey is underlined Press Sens Range and RF ATTEN in this order Use and 4 or the rotary knob to set the attenuator to 20 dB Check that the output voltage DC negative polarity from the 8474C is 100 mV or more using a voltmeter ex 110 mV is good Ifthe voltmeter reading is within the limit replace the Al board The A1 board can not detect the output voltage If the voltmeter reading is not within the limit above check the signal path between the J5 of the A1 and RF IN Front connector Normally the output power from the 11742A Blocking Capacitor is about 3 dBm when steps 1 through 5 are performed Chapter 4 65 Troubleshooting Heterodyne Path Troubleshooting Heterodyne Path Troubleshooting The heterodyne path is shown in Figure 4 9 Figure 4 9 Heterodyne Path Simplified Block Diagram Coaxial Switch 33312 60005 RF OUT N RF IN N 11636B Insertion Loss 7 5dB P 33321 60059 IF 624 MHz 5088 7049 Insertion Loss 2dB 0955 1115 Gain 18dB 8493B 0955 0665 N Conversion Loss 11dB LP 0955 0689
56. e fixed attenuator with the adjustable wrench to keep the fixed attenuator steady U WAVE AMP 20 GHz Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Removal Procedure Remove the top cover as described in the Top Cover Removal procedure Remove the two screws that secure the angle for AMP to the Chassis Sub Disconnect the RF Cable 43521 61610 AMP Switch from the amplifier s connector OUT side Disconnect the RF Cable 43521 61609 AMP DBLR from the amplifier s connector 108 Chapter 6 Parts Replacement Replacement Procedure IN side Disconnect the WIRE Assy for the amplifier from the A1 J14 connector Remove the screw S side and screw L side that secure the amplifier to the angle for AMP U WAVE FREQ DBLR Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Remove the two screws that secure the angle for AMP 20 GHz to the Chassis Sub Disconnect the RF Cable 43521 61609 AMP DBLR from the doubler s connector OUT side Disconnect the RF Cable 43521 61608 DBLR Swi
57. e used in this adjustment Manual Procedure NOTE Adj and follow the program instruction 1 Connect the equipment as shown in Figure 3 3 Figure 3 3 600 MHz SAW OSC Frequency Adjustment Setup BNC m BNO m Cable B To EXT REF Input 0000 20 0000 00 0000 Lic 000 gk m oo oO Co 0000 0000 RE IN LO IN e Signal Generator This adjustment can be performed with the adjustment program In this case choose the To 10MHz OUT ggo o c J DODO L3 9 CICI 43521A RFOUT 10001 43521ase004 Chapter 3 e N m N m Cable m N m Cable DOO 000 0 20000 Er 43 Figure 3 4 Adjustment 600 MHz SAW Oscillator Frequency Adjustment 2 Remove the plug hole cap for the 600 MHz on the rear panel The location of the 600 MHz ADJ is shown in Figure 3 4 600 MHz ADJ Location 600 MHz ADJ 43521ase026 3 10 11 44 Connect a 15 pin D Sub cable furnished with the 43521 between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B Press RF LO and then DOWNCONV on OFF to toggle it DOWNCONV ON off The 435214 outputs the 600 MHz signal
58. ed Top Cover Removal Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 2 medium Procedure 1 Disconnect the power cable from the 43521 2 Remove the two rear feet behind the top cover 3 Loosen the top cover rear screw 4 Slide the top cover toward the rear and lift it off Bottom Cover Removal Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 2 medium Procedure 1 Disconnect the power cable from the 43521 2 Place the 43521A upside down 3 Remove the two rear feet behind the bottom cover 4 Loosen the bottom cover rear screw 5 Slide the bottom cover toward the rear and lift it off Side Cover Removal Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 2 medium Procedure for right side cover 1 Remove the top cover and the bottom cover as described in the Top Cover Removal and Bottom Cover Removal procedures Chapter 6 105 Parts Replacement Replacement Procedure 2 Remove the screw at the rear frame 3 Slide off the side cover toward the rear Procedure for left side cover 1 Remove the top cover and the bottom cover as described in the Cover Removal and Bottom Cover Removal procedures 2 Remove the two screws at the side strap handle caps to remove the strap 3 Slide off the side cover toward the rear Front Panel Removal Tools Required Torx screwdriver T15 Pozid
59. ed Adjustments Verification Assembly or Part Correction Constants CC 1 board 600 MHz SAW OSC Frequency Check 600 MHz Output RF Power Linearity CC RF Power Measurement Accuracy Test RF Power Frequency CC 600 MHz OSC Phase Noise Test RF IN Direct Path Insertion Loss CC System Phase Noise Test 43521 61625 RF Power Linearity CC RF Power Measurement Accuracy Test Thermometer RF Power Frequency CC 8474C RF Power Linearity CC Check Power Measurement Function Power Detector RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 11742 RF Power Linearity CC Check Power Measurement Function Blocking Capacitor RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 8493B between RF Power Linearity CC Check Power Measurement Function 11742A and 11636B RF Power Frequency CC RF Power Measurement Accuracy Test Fixed Att 6dB Input VSWR Test 11636B RF Power Linearity CC Check Power Measurement Function Power Divider RF Power Frequency CC path RF Power Measurement Accuracy Test Input VSWR Test 33321 60059 RF Power Linearity CC Check Heterodyne Path Step Att Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 0955 1115 RF Power Linearity CC Check Heterodyne Path Amplifier Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test System Phase Noise Test 8493B between Amp Power Frequency CC Check Heterodyne Path and Mixe
60. ent Setting RF signal generator Freq 3 GHz Power 0 dBm LO signal generator Freq 2 376 GHz Power 10 dBm 56 Chapter 4 Troubleshooting Check Procedure 4 Press Meas FREQ BAND NOMINAL FREQ 3 G n x1 Ifthe 4352B reading is not 3 GHz change the frequency of the LO signal generator to the LO s frequency which is displayed on the left bottom of the 4352B display Then confirm that the 4352B reading is 3 GHz 5 Press RF LO and then DOWNCONV ON off to toggle it DOWNCONV on OFF and press Meas RF POWER then check that the 4352B reading is more than 7 dBm Ifthe 4352B reading is not within the limit continue with Heterodyne Path Troubleshooting Ifthe 4352B reading is within the limit the heterodyne path is verified Check Local Doubler Path The message CAUTION Set RF ATT 5dB Less could be displayed on the 4352B s display during performing this check In this check the corrective action of the message is not needed 1 Connect the equipment as shown in Figure 4 2 and connect a 15 pin D Sub cable furnished with the 43521 between the I O PORT connector of the 43521A and the I O PORT connector of the 4352B 2 Press Preset to initialize the 4352B then set the 43521A 4352B as follows Setting Operation Instrument type VCO Tester Meas INST TYPE VCO TESTER Measurement mode FREQUENCY Meas FREQUENCY Down converter control ON RF LO DOWNCONV ON off Signal
61. ent Technologies Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent Technologies from another country Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute its programming instruction when properly installed on that instrument Agilent Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free IMPORTANT Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside the environmental specifications for the product or improper site preparation or maintenance No other warranty is expressed or implied Agilent Technologies specifically disclaims the implied warranties of merchantability and fitness for a particular purpose Exclusive Remedies The remedies provided herein are Buyer s sole and exclusive remedies Agilent Technologies shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Assistance Product maintenance agreements
62. er Path Troubleshooting 69 Performance Function Tests Failure Troubleshooting 71 Perform Adjustments and Correction Constants 71 5 Theory of Operation OVERALL OPERATION o usus ves eere RD URDU bau eb ba eec sb bs 74 435214 BLOCK DIAGRAM pye BR ER PUXTeRIRUSESS GEI adele Le d s dass 75 Power Supply Sectioncs 255 qure E ER ILE bep pe Uere bipes ep nx TI Sequencer amp I O Digital Control Section 1 TI Power Measurement Section TI H t rodyne S CHon y s s uy nacre bh bees ES boleh eee 78 Local Drive Section ies ped een dic a SERERE 78 600 MHZ OSG SECTION ed be MICE CRUS SOA BEDS nN ea 78 6 Parts Replacement Replaceable ute RR eR RR RUD ERG 80 Ordering Information ii EI HR m RE er E MER Her Ede 80 LEE Sn ec gre ecc tu ime e s RR ER 80 c oc dice E RIT g Ee RU TN 81 Replacement Procedure irs den RARE ES Rp ecce Re Rot er 105 Top Cover Removal yoten eR DERE ne 105 Bottom Cover Removal 252222222
63. figure with the following figure Figure A 9 DETECTOR Assembly 43521ase047 Page 103 Table 6 17 DETECTOR Assembly Change the table as follows Table A 6 DETECTOR Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 8474 6 1 DETECTOR 2 43521 61625 9 1 Wire Assy 3 43521 01208 8 1 Angle for DETECTOR 4 0515 1550 0 2 Screw 5 3050 0891 7 2 Washer Appendix A 129 Manual Changes Change 1 Page 107 Step Attenuator Replacement Replace the description with the following description Step Attenuator Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Adjustable Wrench for Coaxial Connector Removal Procedure Remove the top cover as described in the Top Cover Removal procedure Remove the two screws that secure the plate for Step Att to the Chassis Sub Disconnect the SMA connectors of the 1250 1159 Adapters from the step attenuator s connectors female To loosen the SMA connector grip the flat faces of the adapter with the adjustable wrench to keep the adapter steady Disconnect the ribbon cable for the step attenuator from the A1 J15 connector Remove the two screws that secure the step attenuator to the plate for Step Att 130 Appendix A Manual Changes Change 1 Page 1
64. generator max freq 6 GHz Frequency Band 2 4 GHz 6 6 GHz Nominal Frequency 4 GHz 43521 Attenuator 20 dB Performance Test Performance Test Operation Meas INST TYPE VCO TESTER Meas RF POWER RF LO DOWNCONV ON off RF LO LO CONTROL AUTO man RF LO SG TYPE 1 RF LO SG MAX FREQ 6 G n Meas FREQ BAND 2 4 6 6G Meas FREQ BAND NOMINAL FREQ 4 G n Sense Range RF ATTEN 2 0 1 If the signal generator for the LO IN port is NOT the 8665B set the LO control to Man ual 2 If the LO control is set to Manual this operation is not required 4 Setthe other instruments control as follows Instrument RF signal generator LO signal generator Step Attenuator Setting Freq 4 GHz Power 0 dBm Freq 4 624 GHz Power 10 dBm 0 dB If the LO control is set to Auto this operation is NOT required 5 Adjustthe RF signal generator output power to make the power meter reading between 1550 2 dBm 6 Record the 4352B reading and the power meter reading in the calculation sheet 7 Calculate the test result according to the calculation sheet then record it in the performance test record 8 Repeat Step 6 for all setting in Table 2 1 Chapter 2 21 Performance Test Performance Test Table 2 1 Power Measurement Accuracy Test Setting RF At
65. h 5 16 inch set to 10 in Ib for reconnecting SMA connector Adjustable Wrench for Coaxial Connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Remove the two screws that secure the plate for Step Att to the Chassis Sub Disconnect the SMA connector of the 1250 1159 Adapter and the SMA connector of the 5088 7049 Limiter from the step attenuator s connectors female To loosen the SMA connector grip flat faces of the part Adapter or Limiter with the adjustable wrench to keep the part steady Disconnect the ribbon cable for the step attenuator from the A1 J15 connector Remove the two screws that secure the step attenuator to the plate for Step Att U WAVE AMP 18 GHz Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Adjustable Wrench for Coaxial Connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Remove the two screws that secure the plate for Step Att to the Chassis Sub Disconnect the SMA connector of the 5088 7049 Limiter from the U Wave amplifier s connector IN side and the SMA connector of the 1250 1159 Adapter from the 11636B Power Divider s connector To loosen the SMA connector grip flat faces of the part Adapter or Limiter with the
66. he A1 board assembly PN 43521 66501 The 5Vdc is supplied to the digital section of the Al board and is supplied to the LED FAN Coaxial Switches and the step attenuator through the A1 The 15 Vdc is supplied to the A to produce regulated 12 V and 5 V for the A D converter section and the 600 MHz OSC section of the A1 The 15 Vdc is also supplied to the three amplifiers in the 43521A through the A1 board The 15 Vdc is supplied to the A1 to produce regulated 12V and 5V for the A D converter section and the 600MHz OSC section of the A1 Sequencer amp I O Digital Control Section This section provides digital control for the 43521A It communicates with the 4352B via the I O PORT in order to control the switches the step attenuator in the 43521A and transfer the measurement data raw data in the 43521A to the 4352B for RF power measurement This section has EEPROM which stores the correction constants data for the 435214 The correction constants data is also transferred to the 4352B via the I O port and is used for the RF power measurement operations of the 435214 are controlled by the 4352B via the I O section Power Measurement Section This section measures the RF input power level for RF Power Measurement It has Peak Detector 8474C which converts the RF power into DC voltage negative polarity The DC voltage is supplied to the A D converter of the A1 board The A D converter converts the DC voltage into digital da
67. iption Designation Number Digit 1 0955 1115 5 1 U WAVE 18 GHz 2 0180 3597 8 1 CAP 47uF 3 43521 01201 1 1 Angle for 4 0520 0173 2 2 Screw 5 0515 1550 0 4 Screw M3 6 43521 25002 0 1 Insulator 98 Chapter 6 Parts Replacement Replaceable Part List Figure 6 14 U WAVE MXR 26 5 GHz Assembly 43521ase044 Table 6 13 U WAVE MXR 26 5 GHz Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 0955 0665 8 1 U WAVE MXR 26 5 GHz 2 0460 0751 4 1 TAPE INDL 40 mm x 25 mm x 2 3 43521 00606 8 1 Plate for MXR 4 0515 1550 0 2 Screw Chapter 6 99 Parts Replacement Replaceable Part List Figure 6 15 U WAVE AMP 20 GHz Assembly 43521ase042 Table 6 14 U WAVE AMP 20 GHz Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 0955 1114 4 1 U WAVE 20 GHz 2 0180 3597 8 1 CAP 47uF 3 43521 01207 7 1 Angle for 4 0520 0173 2 1 Screw 5 0520 0174 3 1 Screw 6 0515 1550 0 2 Screw M3 7 43521 25002 0 1 Insulator 100 Chapter 6 Parts Replacement Replaceable Part List Figure 6 16 U WAVE FREQ DBLR Assembly 43521ase043 Table 6 15 U WAVE FREQ DBLR Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 0955 0693 2 1 U WAVE FREQ DBLR 2 43521 01202 2 1 Angle for DBLR 3 0515 1057 2 2 Screw M2 5 4 0515 1550 2 4 Screw
68. mance Characteristic 2 4 to 6 6 GHz lt 133 dBc 5 4 to 12 6 GHz lt 132 dBc This test fails if the reading is above the performance characteristic in any test point 34 Chapter 2 Performance Test Performance Test Record Performance Test Record Agilent Technologies 43521A Downconverter Unit Serial Number Options Temperature C Date Humidity RH Tested by Power Measurement Accuracy Test RF Attenuator 20 dB Level Frequency Test Limit Test Result Measurement Uncertainty 15 dBm 4 GHz 1 5 dB dB 0 36 dB 8 GHz 2 0 dB dB 0 46 dB 12 GHz 2 5 dB dB 0 65 dB 5 dBm 4 GHz 1 5 dB dB 0 29 dB 8 GHz 2 0 dB dB 0 41 dB 12 GHz 2 5 dB 0 61 0 dBm 3 GHz 1 5 dB dB 0 29 dB 4 GHz 1 5 dB dB 0 29 dB 5 GHz 2 0 dB dB 0 41 dB 6 GHz 2 0 dB dB 0 41 dB 7 GHz 2 0 dB dB 0 41 dB 8 GHz 2 0 dB dB 0 41 dB 9 GHz 2 5 dB dB 0 61 dB 10 GHz 2 5 dB dB 0 61 dB 11 GHz 2 5 dB dB 0 61 dB 12 GHz 2 5 dB dB 0 61 dB 5 dBm 4 GHz 1 5 dB 0 29 8 GHz 2 0 dB dB 0 41 dB 12 GHz 2 5 dB dB 0 61 dB 15 dBm 4 GHz 1 5 dB dB 0 29 dB 8 GHz 2 0 dB dB 0 41 dB 12 GHz 2 5 dB dB 0 61 dB Chapter 2 35 Performance Test Performance Test Record RF Attenuator 0 dB Level Freq
69. mber includes a family of cords and connectors of various materials and plug body configurations straight 90 etc agi Chapter 6 81 Parts Replacement Replaceable Part List Figure 6 2 Top View Major Assemblies Bl EI e 43521ase027 82 Chapter6 Parts Replacement Replaceable Part List Table 6 1 Top View Major Assemblies Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 66501 0 1 1 2 0950 3642 7 1 Power Supply 3 33321 60059 8 1 Step 4 5088 7049 2 1 LIMITER 26 5 GHz 2 0955 1115 5 1 U WAVE 18 GHz 6 1250 1159 4 2 Adapter Coaxial 7 8493 003 8 3 Attenuator 3dB 8 0955 0665 8 1 U WAVE MXR 26 5 GHz 9 0955 1114 4 1 U WAVE 20 GHz 10 0955 0693 2 1 U WAVE FREQ DBLR 11 33312 60005 3 3 COAX IAL SWITCH 0515 1057 2 6 Screw 12 9135 0229 1 1 U WAVE LPF 13 8474C 6 1 DETECTOR 14 11742A 8 1 BLOCKING CAP 15 11636B 1 1 POWER DIVIDER 16 0955 0689 6 1 U WAVE 700MHz Chapter 6 83 Parts Replacement Replaceable Part List Figure 6 3 Top View Cables and Wires 1 2 J3 J4 JQ J10 J11 J5 J6 43521ase028 84 Chapter 6 Parts Replacement Replaceable Part List Table 6 2 Top View Cables and Wires 1 2 Reference Agilent Part Check Qty Description Design
70. n OVERALL OPERATION 43521A Block Diagram RF IN 1742A 8493 Thermo ATT 3dB lt Power Measurement gt LO IN N 0955 0665 SS F LPA 11636B P 33321 60059 5088 7049 0955 1115 AT 3dB lt Heterodyne gt IF 624MHz 0955 0689 35 0229 0955 1114 0955 0693 43521ase006 76 SW Driver amp Power Supply Sequencer amp 0 40 MHz Input from 4352B RF OUT N to 4352B lt Local Drive gt LO OUT N to 4352B PORT to 4352B Chapter 5 Theory of Operation OVERALL OPERATION Power Supply Section The power supply section block diagram is shown in Figure 5 3 Figure 5 3 Power Supply Section Block Diagram A1 43521 66501 5V Digital Section LED Front FAN swi 0950 3642 Power Supply SW2 SW3 A D Step Attenuator for Power Temp Section Amp 0955 0689 Amp 0955 1114 Amp 0955 1115 600MHz OSC Section 43521ase007 The power supply unit PN 0950 3642 produces approximately 5Vdc 15Vdc and 15Vdc These dc voltages are applied to t
71. on that explains how to adapt the manual to the newer instrument In addition to change information the supplement may contain information for correcting errors Errata in the manual To keep this manual as current and accurate as possible Agilent Technologies recommends that you periodically request the latest Manual Changes supplement The supplement for this manual is identified by this manual s printing data and is available from Agilent Technologies If the serial prefix or number of an instrument is lower than that on the title page of this manual see Appendix A Manual Changes For information concerning a serial number prefix that is not listed on the title page or in the Manual change supplement contact the nearest Agilent Technologies office Chapter 1 13 General Information Require Equipment Require Equipment Table 1 1 lists the recommended equipment for performing maintenance on the 43521A Table 1 1 Recommended Test Equipment Equipment Critical Specifications Recommended Model Qty Use VCO PLL Signal No substitute 4352B 1 BA Analyzer T Signal Generator Freq Range 10 MHz to 6 GHz 8665B Opt 004 or 1 P A Power gt 10 dBm 8360B series T Signal Generator Freq Range 10 MHz to 3 GHz 8664A Opt 004 1 P Power 8665A B Opt 004 or 8642B Signal Generator Freq Rang 3 GHz to 12 GHz 83711B or 8360B series 1 P A T Power Meter No substitute 437B 438A 1 B
72. ondition that if not correctly performed or adhered to could result in injury or death to personnel This Caution sign denotes a hazard It calls attention to a procedure practice or condition that if not correctly performed or adhered to could result in damage to or destruction of part or all of the product This Note sign denotes important information It calls attention to a procedure practice or condition that is essential for the user to understand Certification Agilent Technologies certifies that this product met its published specifications at the time of shipment from the factory Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by the Institution s calibration facility or by the calibration facilities of other International Standards Organization members Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period corresponding to the individual warranty periods of its component products Instruments are warranted for a period of one year Fixtures and adapters are warranted for a period of 90 days During the warranty period Agilent Technologies will at its option either repair or replace products that prove to be defective For warranty service or repair this product must be returned to a service facility designated by Agil
73. our nearest Agilent Technologies Sales and Service Office 43521ase021 LINE 115V 230V Fuse 50 60 Hz T3A 100 VA Max 250 V Level a small minus screwdriver Replace the fuse in the fuse to dismount the fuse holder next holder to the AC line receptacle on the rear panel 136 Appendix B WARNING Power Requirement Power Requirements Power Requirements The 43521A requires the following power source Voltage 90 to 132 Vac 198 to 264 Vac Frequency 47 to 63 Hz Power 100 maximum Power Cable In accordance with international safety standards this instrument is equipped with a three wire power cable When connected to an appropriate ac power outlet this cable grounds the instrument frame The type of power cable shipped with each instrument depends on the country of destination Refer to Figure B 1 for the part numbers of the power cables available For protection from electrical shock the power cable ground must not be defeated The power plug must be plugged into an outlet that provides a protective earth ground connection Appendix B 137 Power Requirement Power Requirements Figure B 1 Power Cable Supplied OPTION 900 United Kingdom 4 Plug BS 1363 A 250V 10A Cable 8120 1351 Continental Europe OPTION 902 Plug CEE 7 Standard Sheet VII 250V 10A Cable 8120 1689
74. ower Measurement Accuracy Test This test checks the RF power measurement accuracy Specification RF Power Measurement Accuracy Frequency Level Attenuator Temperature 22 4 GHz lt 4 GHZ gt 4 GHz lt 8 GHz gt 8 GHz lt 12 GHz lt 0 dBm 0 dB 23 10 C 1 5 dB 2 0 dB 2 5 dB lt 15 dBm gt 04 0 to 40 C 1 5 dB 2 0 dB 2 5 dB Test Equipment Chapter 2 Description Recommended Model Signal Generator for RF IN 83711B or 8360B series Signal Generator for LO IN 8665B or 8360B series Power Amplifier 83020A DC Power Supply 87422A Power Splitter 11667A Power Meter E4418A B 437B or 438A Power Sensor 8481A VCO PLL Signal Analyzer 4352B Step Attenuator 8495H Step Attenuator 8494H Attenuator Pad 8493B Opt 006 Blocking Capacitor 11742A RF Cable N m N m 61 cm p n 8120 1839 2ea RF Cable N m N m 122 cm p n 8120 1840 N m N m Cable 18cm 8120 4387 2ea N m N m Cable 61cm 11500B or part of 11851B Precision N m Precision N m 11500C or part of 11851B Cable 61 cm 2ea 3 5mm m 3 5mm m Cable 61 cm 11500E N m N m Adapter 1250 1475 3 5mm m Precision N f Adapter 1250 1744 19 Performance Test Performance Test Procedure Figure 2 1 Power Measurement Accuracy Test Setup BNC m BNC m Cable 122cm Hz OUT To 40 MHz Output To EXT REF S
75. ower Supply Unit Output 1 Remove the 43521 A s top cover 2 Turn the 43521A power on 3 Measure the output voltages 5 15 15V of the power supply unit using a voltmeter with a small probe The voltages locations on the A1 board are shown in Figure 4 3 Voltage Location If the voltmeter reading is not within the following limits replace the power supply Chapter 4 59 Troubleshooting Power Supply Troubleshooting unit Table 4 1 Power Supply Unit Output supply Range 5 V 4 75 to 5 25 15 V 14 25 to 15 75 15V 14 75 to 15 75 If the voltmeter reading is within the limits the power supply is verified Check the Power Supply on the A1 board 1 Disconnect the cables from the A1 board s connector 16 J7 J8 JO J10 J11 J12 J13 J14 and J15 The connector locations are shown in Figure 4 4 Figure 4 4 1 Connector Location 0000010
76. procedure is to adjust the power and the power temperature characteristic Required Equipment 48 Description Recommended Model Signal Generator for RF IN 83711B 8360B series Signal Generator for LO IN 8665B 8360B series Power Splitter 11667A Power Meter 1 E4419 A B Power Sensor 1 8481A Power Meter 2 437B 438A E4418A B or E4419 A B Power Sensor 2 8481A VCO PLL Signal Analyzer 4352B RF Cable N m N m 61 cm p n 8120 1839 2ea RF Cable N m N m 122 cm p n 8120 1840 N m N m Cable 18cm N m N m Cable 61cm p n 8120 4387 2ea 11500B or part of 11851B Precision N m Precision N m Cable 61 cm 11500C or part of 11851B N m N m Adapter 3 5mm m Precision N m Adapter p n 1250 1475 p n 1250 1743 Chapter 3 Adjustment RF Power Frequency Response Correction Constants Procedure 1 Run the adjustment program 2 Choose the CC Resp 3 Connect the equipment as shown in Figure 3 6 Figure 3 6 Power Sensor Tracking Calibration Setup Power Meter 2 SG Sweeper og Power Sensor 2 O B OO OOO L c escoc3 L1 0000 Power Sensor 1 pL SS Oooo 20500005 N Power Splitter Ooo eeoo
77. r Fixed Att 3dB 0955 0665 RF Power Frequency CC Check Heterodyne Path Mixer 9135 0229 Power Frequency CC Check Heterodyne Path Low Pass Filter 0955 0689 RF Power Frequency CC Check Heterodyne Path Amplifier System Phase Noise Test 0955 1114 RF Power Frequency CC Check Local Doubler Path Amplifier System Phase Noise Test 132 AppendixA Table 7 Post Repair Procedures Manual Changes Change 1 Replaced Adjustments Verification Assembly or Part Correction Constants CC 0955 0693 RF Power Frequency CC Check Local Doubler Path Doubler System Phase Noise Test 33312 60005 SW1 RF Power Linearity CC Check Power Measurement Funcion Coaxial Switch RF Power Frequency CC RF Power Measurement Accuracy Test Input VSWR Test 33312 60005 SW2 Coaxial Switch 600 MHz SAW OSC Frequency Check 600 MHz Output 33312 60005 SW3 Coaxial Switch RF Power Frequency CC Check Heterodyne Path Check Local Doubler Path System Phase Noise Test See the Troubleshooting chapter Appendix A 133 Manual Changes Change 1 134 Appendix A Power Requirement Power Requirement Replacing Fuse A Replacing Fuse Fuse Selection Select proper fuse according to the Table B 1 Table B 1 Fuse Selection Fuse Rating Type Fuse Part Number 3A 250Vac UL CSA type 2110 0381 Time Delay For ordering the fuse contact y
78. re 6 7 FRONT Assembly 3521A DOWNCONVERTER UNIT 43521ase032 Table 6 6 FRONT Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 00202 0 1 Panel Front Sub Hidden 2 5061 5386 0 4 Connector Type N 2190 0104 0 4 WSHR LK INTL T 2950 0132 6 4 NUT HEX DUB CHAM 3 42841 66575 3 1 PC BD DSPL with LED Hidden 4 43521 00201 9 1 Panel Front Chapter 6 91 Parts Replacement Replaceable Part List Figure 6 8 REAR Assembly 43521ase031 Table 6 7 REAR Assembly Reference Agilent Part Check Qty Description Designation Number Digit 1 43521 00203 1 1 Panel Rear 2 6960 0081 9 1 Plug Hole 3 1250 0102 5 1 Connector RF BNC 2190 0054 9 1 WSHR LK INTL T 2950 0054 1 1 NUT HEX DBL CHAM 4 43521 61621 5 1 FLAT CBL ASSY 1251 5436 0 2 SCREW LOCK KIT 5 43521 61627 1 1 FAN CABLE ASSY 2190 0584 0 4 WSHR LK HLCL 0515 3149 7 4 SCREW MACH M3 L33 6 1252 6951 8 1 AC INLET 2110 0381 7 1 FUSE 3A 250V 2110 1134 0 1 FUSE DRAWER 92 Chapter 6 Parts Replacement Replaceable Part List Figure 6 9 Cover Top Bottom bottom 43521 039 Table 6 8 Cover Top Bottom Reference Agilent Part Check Qty Description Designation Number Digit 1 5021 5832 0 4 Shield Gasket 152 mm 2 5002 1047 8 1 3 5002 1088
79. rection constants Chapter 3 45 Adjustment RF Power Linearity Correction Constants RF Power Linearity Correction Constants The purpose of this procedure is to adjust the power linearity and the power temperature characteristic Required Equipment 46 Description Recommended Model Signal Generator for RF IN 83711B 8360B series Signal Generator for LO IN 8665B 8360B series Power Amplifier 83020A DC Power Supply 87422A Power Splitter 11667A Power Meter E4419 A B Power Sensor E4412A VCO PLL Signal Analyzer 4352B 80 dB Step Attenuator 8495H 10 dB Step Attenuator 8494H Attenuator Switch Driver 11713A Attenuator Pad 8493B Opt 006 Blocking Capacitor 11742A 2 GHz Lowpass Filter p n 0955 0634 RF Cable N m N m 61 cm p n 8120 1839 2ea RF Cable N m N m 122 cm p n 8120 1840 N m N m Cable 18cm p n 8120 4387 2ea N m N m Cable 61cm 11500B or part of 11851B Precision N m Precision N m 11500C or part of 11851B Cable 61 cm 2ea 3 5mm m 3 5mm m Cable 61 cm 11500 N m N m Adapter p n 1250 1475 3 5mm f Precision N m Adapter p n 1250 1744 3 5mm m Precision N f Adapter p n 1250 1750 Chapter 3 Adjustment RF Power Linearity Correction Constants Procedure Run the adjustment program 2 Choose the CC RFPowLin 3 Connect the equipment as shown in Figure 3 5 Figure 3 5 RF Power
80. riv Screwdriver pt size 2 medium Flat bladed screwdriver Procedure 1 Disconnect the power cable from the 43521A Place the 43521A upside down Remove the four screws from the bottom of the front frame Turn the 43521A over into the correct position n gt N Remove the top trim strip from the front frame by prying the strip up with a flat screwdriver Remove the four screws from the top of the front frame Remove the top cover as described in the Top Cover Removal procedure Disconnect the cables connecting the front panel n Gradually press the front panel assembly from the inside and remove the front panel Rear Panel Removal Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Procedure 1 Remove the top bottom and side covers as described in the Cover Removal Bottom Cover Removal and Side Cover Removal procedures 2 Place the 43521A upside down 3 Remove the four screws from the bottom of the rear frame 106 Chapter 6 Parts Replacement Replacement Procedure 4 Turn over the 43521A into the correct position 5 Remove the four screws from the top of the rear frame 6 Gradually pull the rear panel assembly out from the rear frame Step Attenuator Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrenc
81. ruction to update the correction constants 50 Chapter 3 Troubleshooting This chapter describes troubleshooting flow and provides the procedure to determine which assembly part is faulty and should be checked 51 Troubleshooting TROUBLESHOOTING SUMMARY TROUBLESHOOTING SUMMARY The troubleshooting strategy of this manual is based on a verification rather than symptomatic approach This chapter describes typical troubleshooting procedure step by step and you can identify a faulty part by following the troubleshooting steps sequentially Figure 4 1 diagrams the troubleshooting organization A faulty part is replaced according to Chapter 6 Chapter 6 lists the replaceable parts and gives replacement procedures for the major parts The procedures required after part replacement such as adjustments and performance tests are given in Chapter 7 52 Chapter 4 Troubleshooting TROUBLESHOOTING SUMMARY Figure 4 1 Troubleshooting Organization Check Fail Power Supply LED Front Troubleshooting Fai Check Fail 600MHz OSC 600MHz Output Troubleshooting Check Fail Power Meas Function Power Meas Function Troubleshooting Check Fail Heterodyne Path Heterodyne Path Troubleshooting Check Fail th Local Doubler Path re cine Pass Fail Performance Test Performance Test Function Test Function
82. st 33312 60005 SW1 RF Power Linearity CC Coaxial Switch RF Power Frequency CC 33312 60005 SW2 600 MHz SAW OSC Frequency Coaxial Switch 33312 60005 SW3 RF Power Frequency CC Caxial Switch Check Power Measurement Function RF Power Measurement Accuracy Test Input VSWR Test Check 600 MHz Output Check Heterodyne Path Check Local Doubler Path System Phase Noise Test See the Troubleshooting chapter Chapter 7 113 Post Repair Procedures POST REPAIR PROCEDURES 114 Chapter 7 Manual Changes This appendix contains the information required to adapt this manual to earlier versions or configurations of the 43521A than the current printing date of this manual The information in this manual applies directly to an 43521A whose serial number prefix is listed on the title page of this manual 115 Table 1 Figure 1 Manual Changes Manual Changes Manual Changes To adapt this manual to your 435214 refer to Table 1 Manual Changes by Serial Number Serial Prefix or Number Make Manual Changes JP1KG00149 or below exc JP1KG143 146 ept Change 1 Agilent Technologies uses a two part ten character serial number that is stamped on the serial number plate see Figure A 1 The first five characters are the serial prefix and the last five digits are the suffix Serial Number Plate SER NO AK HEWL
83. t Power RF SG Step Att LO SG Freq Band Meter Freq Freq Reading 20 dB 15 0 2 dBm 4 GHz 0 dB 4 624 GHz 2 4 to 6 6 GHz 8 GHz 0 dB 3 688 GHz 5 4 to12 6 GHz 12 GHz 0 dB 5 688 GHz 5 4 to12 6 GHz 510 2 dBm 4 GHz 10 dB 4 624 GHz 2 4 to 6 6 GHz 8 GHz 10 dB 3 688 GHz 5 4 to 12 6 GHz 12 GHz 10 dB 5 688 GHz 5 4 to 12 6 GHz 0 0 2 dBm 3 GHz 15 dB 3 624 GHz 2 4 to 6 6 GHz 4 GHz 15 dB 4 624 GHz 2 4 to 6 6 GHz 5 GHz 15 dB 5 624 GHz 2 4 to 6 6 GHz 6 GHz 15 dB 2 688 GHz 5 4 to 12 6 GHz 7 GHz 15 dB 3 188 GHz 5 4 to 12 6 GHz 8 GHz 15 dB 3 688 GHz 5 4 to 12 6 GHz 9 GHz 15 dB 4 188 GHz 5 4 to 12 6 GHz 10 GHz 15 dB 4 688 GHz 5 4 to 12 6 GHz 11 GHz 15 dB 5 188 GHz 5 4 to 12 6 GHz 12 GHz 15 dB 5 688 GHz 5 4 to 12 6 GHz 5 0 2 dBm 4 GHz 20 dB 4 624 GHz 2 4 to 6 6 GHz 8 GHz 20 dB 3 688 GHz 5 4 to 12 6 GHz 12 GHz 20 dB 5 688 GHz 5 4 to 12 6 GHz 15 0 2 dBm 4 GHz 30 dB 4 624 GHZ 2 4 to 6 6 GHZ 8 GHZ 30 dB 3 688 GHz 5 4 to 12 6 GHz 12 GHz 30 dB 5 688 GHz 5 4 to 12 6 GHz 0 dBm 5 0 2 dBm 4 GHz 20 dB 4 624 GHz 2 4 to 6 6 GHz 8 GHz 20 dB 3 688 GHz 5 4 to 12 6 GHz 12 GHz 20 dB 5 688 GHz 5 4 to 12 6 GHz 15 0 2 dBm 4 GHz 30 4 624 GHz 2 4 to 6 6 GHz 8 GHz 30 dB 3 688 GHz 5 4 to 12 6 GHz 12 GHz 30 dB 5 688 GHz 5 4 to 12 6 GHz If the LO control is set to Auto this setting is not required 22 Chapter 2 Performance Test Performance Test Input VSWR Test This test checks the return loss of the RF IN port
84. ta This section also has the Thermometer which is used to Chapter 5 77 Theory of Operation OVERALL OPERATION measure the temperature around the Peak Detector and to compensate the RF power value of the Peak Detector with the Thermometer reading value Heterodyne Section This section converts the RF signal from the RF IN Front of the 435214 into the IF signal 624 MHz To convert the RF signal into the IF signal a local signal source is required The frequency of the local signal for mixing the 624 MHz IF signal depends on the RF signal and is detected by the 4352B The mixer 0955 0665 of the heterodyne section outputs the 624 MHz signal and other frequency signals and these signals are applied to the next low pass filter PN 9135 0229 cut off frequency is 800 MHz Then only 624 MHz IF signal passes the low pass filter and the signal is supplied to the RF OUT of the 43521A Local Drive Section This section supplies the local signal to the mixer 0955 0665 of the heterodyne section It has two signal paths One is the direct path that is from the LO IN of the 43521 A to the input port of the mixer directly The other is doubler path which doubles the frequency of the local signal from the LO IN The heterodyne section can convert the RF signal up to 12 6 GHz to the IF signal 624 MHz with only one SG up to 6 GHz by using the doubler path 600 MHz OSC Section This section produces the 600 MHz signal for the 4352B Local
85. tch from the doubler s connector IN side Remove the two screws that secure the doubler to the angle for DBLR U WAVE AMP 700 MHz Replacement Tools Required Torx screwdriver T15 Pozidriv Screwdriver pt size 1 small 2 medium Open end wrench 5 16 inch Open end torque wrench 5 16 inch set to 10 in Ib for reconnecting SMA connector Removal Procedure Remove the top cover as described in the Cover Removal procedure Disconnect the RF Cable 43521 61635 AMP LPF from the amplifier s connector IN side Disconnect the RF Cable 43521 61635 AMP Switch from the amplifier s connector OUT side Disconnect the WIRE Assy for the amplifier from the A1 J13 connector Remove the two screws and washers that secure the amplifier to the Chassis Sub Chapter 6 109 Parts Replacement Replacement Procedure 110 Chapter 6 Post Repair Procedures This chapter lists the procedures required to verify the 43521 operation after an assembly or a part is replaced with a new one 111 Post Repair Procedures POST REPAIR PROCEDURES POST REPAIR PROCEDURES Table 7 1 Post Repair Procedures lists the required procedures that must be performed after the replacement of an assembly or a part These the recommended minimum procedures to ensure that the replacement is successfully completed When you replace an assembly or a part perform the adjustments and updating correction constants CC in
86. the 43521 to warm up for at least 30 minutes before you execute any of the function tests Ambient Condition Perform all performance tests in ambient conditions of 23 5 lt 70 RH 26 Chapter 2 600 MHz SAW OSC Phase Noise Test Performance Test Function Test This test checks the phase noise of the 600 MHz SAW oscillator using the 4352B Performance Characteristic 1 kHz Offset 105 dBc 10 kHz Offset lt 130 dBc 100 kHz Offset lt 140 dBc 1 MHz Offset lt 148 dBc Required Equipment Description Recommended Model VCO PLL Signal Analyzer 4352B Signal Generator 8664A 8665A B N m N m Cable 61 cm 11500B or part of 11851B 2ea BNC m BNC m Cable 61 cm p n 8120 1839 Procedure Figure 2 3 600 MHz SAW OSC Phase Noise Test Setup BNC m BNC m Cable B To EXT REF Input 0000 o000 L ML L 1 OO Omaa OO 0000 aoon onmi ignal Generator To 10MHz OUT OO OOO OOO coooa a OO OOO 000 C 00000 Ope N m N m Cable N m N m Cable RF OUT 43521 5 004 Chapter 2 o0 OOOO E 27 Performance Test Function Test 1 Connect the equipment as shown in Figure 2 3 2 Press Preset to initialize the 4352B then set the control as follows Setting
87. ther person capable of rendering first aid and resuscitation is present DO NOT Substitute Parts or Modify the Instrument To avoid the danger of introducing additional hazards do not install substitute parts or perform unauthorized modifications to the instrument Return the instrument to an Agilent Technologies Sales and Service Office for service and repair to ensure that safety features are maintained in operational condition Dangerous Procedure Warnings Warnings such as the example below precede potentially dangerous procedures throughout this manual Instructions contained in the warnings must be followed Dangerous voltage levels capable of causing death are present in this instrument Use extreme caution when handling testing or adjusting this instrument Safety Symbols General definitions of safety symbols used on the instrument or in manuals are listed below Instruction Manual symbol the product is marked with this symbol when it is necessary for the user to refer to the instrument manual Alternating current Direct current On Supply Off Supply JL In position of push button switch Out position of push button switch d Frame or chassis terminal A connection to the frame chassis of the equipment which normally include all exposed metal structure WARNING CAUTION NOTE This warning sign denotes a hazard It calls attention to a procedure practice or c
88. tion for using the Adjustment Program 40 Installing a GPIB Card 82340B 82341C D 82350 40 Installing HP VEE for Personal 40 Installing Adjustment Program into Your PC preliminary 40 Equipment Setups 405504 Sine hee ees EU ERU DERE ae Suay EI E ROS 40 Running the Adjustment Program 1 4 0 42 600 MHz SAW Oscillator Frequency Adjustment 43 R quired Equipment z uc St acha 43 Manual Procedures oed IUE CE RES EAE AIC IUE OE DN 43 Writing Default Correction Constant 45 Required Equipment issus Hee een stones ahaa CE pO DOE DU GR 45 Procedure REP aha du ue Mets ne beds cu pages 45 RF Power Linearity Correction Constants 46 Required Equipment gaa yy white ly aed Pag ape debe etn ead bee 46 Procedu ters oec ss PR hoes shes ED Diane pimo 47 RF Power Frequency Response Correction Constants 48 Contents Required Equipment scien sie Ue t hae EB EHE B
89. uency Test Limit Test Result Measurement Uncertainty 5 dBm 4 GHz 1 5 dB dB 0 29 dB 8 GHz 2 0 dB dB 0 41 dB 12 GHz 2 5 dB dB 0 61 dB 15 dBm 4 GHz 1 5 dB dB 0 29 dB 8 GHz 2 0 dB dB 0 41 dB 12 GHz 2 5 dB dB 0 61 dB Input VSWR Test RF Attenuator Test Limit Test Result Measurement Uncertainty 20 dB 1 5 0 1 0 dB 1 5 0 1 Function Test Record 600 MHz SAW OSC Phase Noise Test Pass System Phase Noise Test 36 Pass Fail Fail Chapter 2 Adjustment This chapter provides the adjustment procedure for the 43521A Downconverter Unit to ensure that the 43521A Downconverter Unit is within its specifications 37 WARNING Adjustment Safety Considerations Safety Considerations This manual contains NOTEs CAUTIONs and WARNINGS that must be followed to ensure the safety of the operator and to keep the instrument in a safe and serviceable condition The Adjustment must be performed by qualified service personnel Any interruption of the protective ground conductor inside or outside the analyzer or disconnection of the protective ground terminal can make the can make the instrument dangerous Intentional interruption of the protective ground system for any reason is prohibited Required Controller The following controller system is required to run the adjustment program Windows PC PC AT Compatible RAM 264MBytes CPU Pentium 200 MH
90. voicing Prepaid transportation there is a small handling charge for each order Noinvoices In order for Agilent Technologies to provide these advantages please send a check or money order with each order Mail order forms and specific ordering information are available through your local Agilent Technologies sales office Addresses and telephone numbers are located in a separate document shipped with the manuals 80 Chapter 6 Parts Replacement Replaceable Part List Parts List Figure 6 1 Power Cables and Plug Configurations OPTION 900 United Kingdom OPTION 901 Australia New Zealand 1 Plug BS 1363 A 250V 10A Plug AS3112 250V 10A Cable 8120 1351 Cable 8120 1369 OPTION 902 Continental Europe OPTION 903 U S Canada Plug 7 Standard Sheet 250V 10A Plug NEMA 5 15P 125V 10A Cable 8120 1689 Cable 8120 1378 OPTION 904 U S Canada OPTION 906 Switzerland Ub Plug NEMA 6 15P 250V 6A Plug SEV Type 12 250V 10A Cable 8120 0698 Cable 8120 2104 OPTION 912 OPTION 917 India Republic of S Africa Plug SR 107 2 D 250V 10A Plug IEC 83 B1 250V 10A Cable 8120 2956 Cable 8120 4211 OPTION 918 OPTION 920 Argentina Plug JIS C 8303 125V 12A Plug Argentine Resolution 63 Annex IV 250V 10A Cable 8120 4753 Cable 8120 6870 OPTION 921 OPTION 922 Plug CEI 23 16 250V 10A Plug GB 1002 250V 10A Cable 8120 6978 Cable 8120 8376 NOTE Each option nu
91. z or faster OS Microsoft Windows NT 24 0 Windows 959 Windows 98 Software HP VEE 24 0 GPIB Card 82350 82340B 82341C D Warm up for Adjustment Warm up the 43521A for at least 30 minute before performing any of the following Adjustment procedures to ensure procedures to ensure proper results and correct instrument operation Required Equipment Table 1 1 lists the equipment required to perform the Adjustment procedures described in this chapter Use only calibrated test equipment when adjusting the 43521A 38 Chapter 3 Adjustment Order of Adjustment Order of Adjustment When performing more than one Adjustment perform them in the order they appear in this chapter The procedures are presented in the following order 600 MHz SAW Oscillator Frequency Adjustment RF Power Linearity Correction Constants RF Power Frequency Response Correction Constants RF IN Direct Path Insertion Loss Correction Constants Correction Constant Checksum Chapter 3 39 Adjustment Preparation for using the Adjustment Program Preparation for using the Adjustment Program To use the Adjustment Program some preparation is required This section describes how to its procedure Installing a GPIB Card 82340B 82341C D or 82350A Install a GPIB Card into your computer see the GPIB Card manual The select code of the GPIB Card should be set to 7 Installing HP VEE for Personal Computer Install the HP VEE into your computer

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