Page 1 Keysight E8257D/67D and E8663D PSG Signal Generators Notice: This document contains references to Agilent. Please note that Agilent’s Test and Measurement business has become Keysight Technologies. For more information, go to www.keysight.com. Service Guide...
Page 2 COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH government requirements THESE TERMS, THE WARRANTY beyond those set forth in the © Keysight Technologies, Inc. TERMS IN THE SEPARATE EULA shall apply, except to the 2004-2017 AGREEMENT WILL CONTROL. extent that those terms, rights, or...
Page 3 Where to Find the Latest Information Documentation is updated periodically. For the latest information about these products, including instrument software upgrades, application information, and product information, browse to one of the following URLs, according to the name of your product: http://www.keysight.com/find/psg To receive the latest updates by email, subscribe to Keysight Email Updates at the following URL: http://www.keysight.com/find/MyKeysight...
Page 5: Table Of Contents
Self–Tests 12xx: A26 MID Self–Test Errors (E8257D) ........
Page 6 Contents 514 Reference Oven Cold ..............105 515 10 MHz Signal Bad .
Page 7 Contacting Keysight Technologies ........
Page 8 Contents Microcircuit Interface Deck Top View ............236 Main Chassis and MID Bottom View.
Page 9 Contents A4 Inverter (serial number prefix < US/MY5XXX3XXX only) ......... . 277 Tools Required .
Page 10 Contents Replacement Procedure ..............297 A18BT1 .
Page 11 A31 Motherboard (E8257D & E8663D)........
Page 12 Contents A32 10 MHz Crystal Oscillator ..............354 Tools Required .
Page 13 A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only) ....... .
Page 14 Contents 5. Safety and Regulatory General Safety Considerations ..............420 Lithium Battery Disposal .
Page 15 — Getting Started with Remote Operation Programming Guide — Using IO Interfaces — Programming Examples — Programming the Status Register System — Creating and Downloading Waveform Files — Creating and Downloading User-Data Files Keysight E8257D/67D & E8663D PSG Signal Generators Service Guide...
Page 16 — Digital Signal Interface Module Commands — SCPI Command Compatibility — Troubleshooting Service Guide — Replaceable Parts — Assembly Replacement — Post-Repair Procedures — Safety and Regulatory Information — Key function description Key Reference Keysight E8257D/67D & E8663D PSG Signal Generators Service Guide...
Page 17: Troubleshooting
— “Self–Test Overview” on page 181 — “Contacting Keysight Technologies” on page 183 Troubleshooting instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any troubleshooting unless qualified. The opening of covers or removal of parts is likely to expose dangerous voltages.
Page 18: Electrostatic Discharge (Esd) Information
Of the two, only the table–mat and wrist–strap combination provides adequate ESD protection when used alone. To ensure user safety, the static–safe accessories must provide at least 1 MΩ of isolation from ground. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 19: Handling Of Electronic Components And Esd
— Perform work on all components at a static–safe workstation. — Keep static–generating materials at least one meter away from all components. — Store or transport components is static–shielding containers. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 20: Getting Started With Troubleshooting
Go to this section... Unlocked Conditions “Troubleshooting Unlocks” on page 104 Unleveled Conditions “Troubleshooting Unlevels” on page 108 Adjustment Problems “Troubleshooting Adjustment Problems” on page 116 Performance Test Problems “Troubleshooting Performance Test Problems” on page 120 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 21: Running Self-Test
5. Troubleshoot and repair the most independent failure. 6. After you replace the failed assembly, run the Self–Test again. 7. If another assembly is reported as the most independent failure, repeat steps 4 thru 6 until the Self–Test passes. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 22: A18 Cpu Turn-On Test
+3.4 Vdc +3.4 ± 0.07 Vdc Pin 49, 50, 99, 100 +5.2 Vdc +5.2 ± 0.1 Vdc 3. If the voltages are present on connector P222, turn power off and remove the A18 CPU. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 23: Checking The A18 Cpu Voltages
1-3. Before verifying the turn–on sequence, make sure all switches in the upper left–hand corner of the A18 CPU are in the CLOSED (up) position. If the lights fail to step through the sequence, replace A18 CPU. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 24: No Instrument Control From The Front Panel
“Front–Panel Display Assembly Troubleshooting” on page Error Messages If error messages are reported after the turn–on check is completed, refer to the Error Messages list, located on the E8257D/67D PSG Signal Generator Documentation Set CD (part number E8251–90351) for details. CPU Data Backup This procedure applies only if the CPU is working prior to removal.
Page 25: Self-Test Failures And Related Troubleshooting
401 Prelevel Loop Test 402 Quadrature DAC Test 403 VBLO Test 404 Marble Test 405 Gain Adjustment Test 406 Prelevel Bypass Test 407 Switched Filters Test 408 (not used) 409 ALC Modulation Test E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 26 A7 Reference (Option UNR/UNX) “Self–Tests 10xx: A7 Reference (Option UNR/UNX and Instruments with Serial Prefixes ≥ US4805/MY4805) Self–Test Errors” on page 74 1000 Power Supply 1001 10 MHz Test 1002 1 GHz Test E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 27 A18 CPU “Self–Tests 11xx: A18 CPU Self–Test Errors” on page 76 1100 Power Supply A26 Micro Interface Deck (E8257D) “Self–Tests 12xx: A26 MID Self–Test Errors (E8257D)” on page 77 1200 Power Supply 1201 Mod Filter 1202 20 GHz Doubler 1203 40 GHz Doubler (Option 540 only)
Page 28 “Self–Tests 26xx: A8 Output Self–Test Errors” on page 100 2600 Power Supply Tests 2601 Prelevel Loop Test 2602 ALC Modulator Test 2603 Pulse Modulator Test 2604 Clamp Detector Test 2605 Bias Switch Test E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 29 “Self–Tests 28xx: A8 Vector Output Self-Test Errors” on page 102 2800 Power Supply Tests 2801 Prelevel Loop Test 2802 ALC Modulator Test 2803 Pulse Modulator Test 2804 Clamp Detector Test 2805 Bias Switch Test 2806 Switched Filters Test 2807 DAC Functionality Test E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 30: Troubleshooting Assembly-Level Problems
Serial Prefixes ≥ US4805/MY4805) Self–Test Errors” on page 74 — “Self–Tests 11xx: A18 CPU Self–Test Errors” on page 76 — “Self–Tests 12xx: A26 MID Self–Test Errors (E8257D)” on page 77 — “Self–Tests 12xx: A26 MID Self–Test Errors (E8267D)” on page 83 —...
Page 31 2. Press any front panel key to disable the screen saver. 3. If the display is still bad, check P12 on the A31 Motherboard for the following signals: Signal State P12−1 5.2 Vdc P12−3 LIGHT_EN >3 Vdc E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 32 P11−9, 10, 12, 13, 15, 16, 18, 19, 21, 22, 24, 25, 27, 28, 30, 31, 33, Refer to Figure 1-1. 34, 36, 37, 39, 40 a. If >21V check the power supplies. If the power supplies are good, replace the mother- board. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 33 6. If all the signals measured in Step 4 are good, check the following signals at J9 of the power switch. To access J9 the front panel must be removed from the chassis frame and laid face down. Signal State J9−7 VLCD approximately 21 Vdc E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 34 KEYROW pins should be a TTL low KEYCOL0 P13–1 KEYROW0 P13–17 KEYCOL1 P13–3 KEYROW1 P13–19 KEYCOL2 P13–5 KEYROW2 P13–21 KEYCOL3 P13–7 KEYROW3 P13–23 KEYCOL4 P13–9 KEYROW4 P13–25 KEYCOL5 P13–11 KEYROW5 P13–26 KEYCOL6 P13–13 KEYROW6 P13–24 KEYCOL7 P13–15 KEYROW7 P13–22 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 35 5. If both signals are correct, press the faulty hardkey or softkey while monitoring the KEYCOL or KEYROW on the oscilloscope. The KEYCOL line should pulse low; the KEYROW line should pulse high. If either line does not function properly, replace the front panel board. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 36 — If the signal is a TTL low, replace the dc to ac inverter. 2. If the signal is a TTL high, check it at P221–16 of the motherboard. — If the signal is high at P221, replace the CPU board. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 37: Power Supply Troubleshooting
After unplugging the instrument, wait 30 seconds to allow the supplies to discharge before removing or installing an assembly. Tables through list the motherboard test points (connector and pin number) and power supply voltages for the E8257D. See Figure 1-2 on page 46 for connector locations. Tables...
Page 38 Troubleshooting Troubleshooting Assembly–Level Problems Table 1-5 E8257D/E8663D Power Supply vs. Assembly Matrix (1 of 3) Motherboard test points: +32 Vdc +15 Vdc +10 Vdc +8 Vdc +9 Vdc +5.2 Vdc A27 40 GHz Doubler J33–5 J33–19 J33–21 J33–7, 9 (E8257D only) A29 20 GHz Doubler J32–5...
Page 39 Troubleshooting Troubleshooting Assembly–Level Problems Table 1-6 E8257D/E8663D Power Supply vs. Assembly Matrix (2 of 3) (Continued) Motherboard test points: +5.2 Digital +3.4 Digital +2.6 Vdc –7 Vdc –6 Vdc +1.8 Vdc AT1 Attenuator J13–2 Table 1-7 E8257D/E8663D Power Supply vs. Assembly Matrix (3 of 3)
Page 40 Troubleshooting Troubleshooting Assembly–Level Problems Table 1-7 E8257D/E8663D Power Supply vs. Assembly Matrix (3 of 3) (Continued) Motherboard test points: –15 Vdc –5.2 Vdc –3 Vdc +3.5 Vdc +6.5 Vdc +12 Vdc +15 Vdc stby Vol tage A38 Low Band Switch P142–3...
Page 41 Table 1-9 E8267D Power Supply vs. Assembly Matrix (2 of 5) Motherboard Test Points: +8 VA +9 VDC +5.2 VDC +5.2 VAF +5.2D +5.2 VDF A1 Keyboard P1–12 A2 Display P11–44 A2DS1 Backlight P12–1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 42 J34–28 b A37 45 GHz Upconverter J35–7, J35–1, 2, 3, J35–16 A38 Low Band Switch Filter P142–2, 27 P141–64, 65, 129, AT1 Attenuator J13–2 a. Originates on YTO Driver b. Originates on microwave interface E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 43 A23 Lowband Coupler/Det J15–10 A26 Microwave Interface P201–24 P201–30, 33, 46 P201–11, A27 40 GHz Doubler J36–4 A29 20 GHz Doubler J32–4 A30 20 GHz Mod Filter J31–4 A35 20 GHz I/Q Modulator J34–4 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 44 A29 20 GHz Doubler J32–8 J32–1, 3 J31–1, 3 c A30 20 GHz Mod Filter J31–8 J34–9 c A35 20 GHz I/Q Modulator P142–26 P141–51, 55, A38 LB Switch Filter 56, 117, 120, E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 45 Originates on Microwave Interface Table 1-12 E8267D Power Supply vs. Assembly Matrix (5 of 5) +1.8VD_1 a Motherboard Test Points: +1.95VD1 Baseband Generator P161–52, 118 P161–55, 56, 120–122 a. Voltage regulator on motherboard E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 46 Troubleshooting Troubleshooting Assembly–Level Problems Figure 1-2 E8257D (Analog) Motherboard Connectors – Bottom View P241 P223 P231 J1121 J1051 P192 P221 P222 P191 P182 P181 P172 P171 P201 P151 P152 P141 P142 P131 P132 P121 P122 P111 J1122 J1055 J1042 P112...
Page 47 P221 P191 P222 P171 P161 P151 P223 P141 P192 P172 P131 P162 P152 P121 P142 P111 P132 J1056 P122 J1122 J1055 P112 J1042 J1053 J1043 J1052 J1057 J1041 J1031 J1032 J1021 P42 P32 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 48 +3.4 VD 3.4 ± 1.0 15 ± 0.75 –5.2 –5.2 ± 0.1 Standby 10.2 ± 0.2 –6 –6 ± 0.12 9 ± 0.18 –7 –7 ± 0.1 8 ± 0.5 –15 –15 ± 0.5 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 49 3. Turn the instrument off and reinstall the assembly removed in Step 1. Remove the next assembly and see if the supply LED lights. Continue this process until the supply functions properly. 4. Replace the last assembly that you removed. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 50 Troubleshooting Assembly–Level Problems Figure 1-4 E8257D Motherboard Power Supply LEDs DS101 DS112 DS103 DS113 DS107 DS104 +32V +15V –7V –15V +5.2V +10V DS110 DS109 DS111 DS102 DS106 DS100 DS105 +3.4VD –5.2V –6V +15VSTBY +5.2VDF E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 51 DS102 +5.2V +10V –7V –15V DS101 +15V +32V DS103 +15VSVSTBY DS106 DS105 DS110 –5.2V DS111 DS115 –6V –5.2V2 DS119 DS114 PS–FAULT DS118 +1.95VD2 +2.6VD +1.95VD1 DS109 +3.4D DS108 +5.2VD DS116 DS117 +1.8VD1 +1.8VD2 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 52 3. Turn the instrument off and reinstall the assembly removed in Step 1. Remove the next assembly and see if that fixes the problem. Continue this process until the supply functions properly. 4. Replace the last assembly that you removed. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 53 — +3.4 VD, which is regulated down to +1.95 VD — +2.6 VD, which is regulated down to +1.8 VD If the supplies are good at the A19 Power Supply, replace the A31 Motherboard. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 54: Option 008/009 Troubleshooting
Replace the A18 CPU b. Run the required performance test for the A18 CPU, see Chapter 4, “Post–Repair Procedures.” c. Repeat steps 2 thru 4. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 55: Self-Tests 1Xx For The A13 I/Q Multiplexer
P152 – 27 +5.04 +5.36 Main Supply P152 – 1 A9 YIG Driver −5.2 −5.36 −5.04 −5.2 V2 P152 – 26 −5.30 −5.10 Motherboard +5.2 D P151 – 64, 65, 129, +5.04 +5.36 Main Supply E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 56 107 Drift Canceller — Replace the A13 I/Q Multiplexer 108 IQ Polarity Switch — Replace the A13 I/Q Multiplexer 109 RMS to DC Converter — Replace the A13 I/Q Multiplexer. 110 Not Used E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 57 300 ms at +0.7V and 300 ms at –0.7V. — If a square wave is not present on A31J1053, replace the W131 cable. — If a square wave is present at A31J1053, replace the A8 Output board. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 58: Self-Tests 2Xx: A5 Sampler Self-Test Errors
2. If the supply voltages are bad on any of the connector pins indicated, check the origin of the supply. 3. If the supply voltages are good at the origin, replace the A31 Motherboard. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 59 8 GHz CW, the A6 Frac–N signal should be at a frequency of 593.75 MHz and at a power level of +7 dBm. 4. If the signal is good, replace the A5 Sampler, if the signal is bad go to the A6 Frac–N troubleshooting procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 60: Self-Tests 3Xx: A7 Reference (Standard) Self-Test Errors (For Instruments With Serial Prefixes < Us4805/My4805)
300 1 GHz Detector 1. Check and remove any connection to the 10 MHz external reference on the rear panel. 2. If the signal generator continues to fail self–test, replace the A7 Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 61: Self-Tests 4Xx: A8 Output Self-Test Errors (E8267D Only)
−14.55 Main Supply +5.2 P52–14, 29 +5.04 +5.36 Main Supply P52–5, 20 +8.82 +9.18 YIG Driver P52–3, 18 YIG Driver −6 −6.12 −5.88 400 Lowband Ground and PTAT Test — Replace A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 62 — If the signal is bad at J10, refer to the A13 I/Q Multiplexer troubleshooting, on page — If the signal is good at J10, change the cable. 2. Measure the I signal from the A13 I/Q Multiplexer: a. Reconnect the cable removed in Step 1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 63 — Replace the A8 Output. 408 ALC Reference DAC Test — Replace the A8 Output. 409 ALC Modulation Test — Replace the A8 Output. 410 Burst Mod Driver Test — Replace the A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 64: Self-Tests 6Xx: A9 Yig Driver Self-Test Errors
There should be a 1 GHz signal, that is >−30 dBm. — If the signal is good, replace the A9 Output. — If the signal is not good, run the A7 self–tests. Self–Tests 6xx: A9 YIG Driver Self–Test Errors E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 65 2. Loop self–test 602, and use an oscilloscope to measure the voltage on J4. The voltage should pulse to +10 Vdc. — If the voltage is +10 Vdc, replace the A9 YIG Driver. — If the voltage on J4 is bad, replace the A5 Sampler. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 66 2. If the signal is not present at J9, measure the center pin of J1032 on the motherboard. — If the signal is present, replace the cable. — If the signal is not present, replace the A6 Frac–N. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 67: Self-Tests 7Xx: A6 Frac-N Self-Test Errors
+8.82 +9.18 YIG Driver –5.2 P32–4,19 –5.1 –5.3 YIG Driver –6 P32–3, 18 –5.88 –6.12 YIG Driver 700 Ref Voltage — Replace the A6 Frac–N. 701 Loop Gain — Replace the A6 Frac–N. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 68 Use an extender board cable to connect a spectrum analyzer to J1. d. Tune the spectrum analyzer to the first J1 frequency, and check for the correct power. e. Repeat Step d for the remaining frequencies. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 69 — If the signal is good, replace the A6 Frac–N. 3. If the signal is still bad, measure P41–5 on the A7 Reference. — If the signal is good at P41–5, replace the A31 Motherboard. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 70: Self-Tests 7Xx: A45 Frac-N Self-Test Errors (Option Uny)
— If the signal is not present, replace W155 or A46. 722 Open Loop VCO Test — Replace the A45. 723 Open Loop F/2 Test — Replace the A45. 724 Close Loop VCO Test — Replace the A45. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 71: Self-Tests 9Xx: A10 Alc Self-Test Errors
(Vdc) (Vdc) (Vdc) P122–4 +31.04 +32.96 Main Supply P122–28 +14.55 +15.45 Main Supply –15 P122–3 –14.55 –15.45 Main Supply +5.2 P122–2, 27 +5.04 +5.37 Main Supply –5.2 P122–1, 26 +5.30 +5.10 YIG Driver E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 72 Disconnect the cable from J3 of the A10 ALC (W15) and connect the cable to the voltmeter. — If the signal is not present, refer to highband RF loop troubleshooting. — If the signal is present, replace the A10 ALC. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 73 — If the signal is present, replace the A10 ALC. 904 Scalar Mod Pulse — Replace the A10 ALC. 905 ALC Mod Test — Replace the A10 ALC. 906 Scan Mod Test — Replace the A10 ALC. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 74: Self-Test Errors
. If the signal is present, replace the A7 Reference. p–p 2. If the signal is not present, the problem could be the 10 MHz Reference or the signal path from the 10 MHz Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 75 A7 board and measure P41–2. c. If the signal is now present, replace the A7 board. d. If the signal is still missing, replace the A31 mother board. 1002 1 GHz Test — Replace the A7 Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 76: Self-Tests 11Xx: A18 Cpu Self-Test Errors
Connector P223 Supply Vol tage Vol tage Range Pin 1 –5.2 Vdc –5.2 ±.1 Vdc Pin 17 –6 Vdc –6 ±.12 Vdc Pin 18 +9 Vdc +9 ±.18 Vdc E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 77: Self-Tests 12Xx: A26 Mid Self-Test Errors (E8257D)
Motherboard. 7. If the voltages are not present on P112, troubleshoot the A9 YIG Driver. Self–Tests 12xx: A26 MID Self–Test Errors (E8257D) Before proceeding to the reported self–test error code, check the following voltages in. If any of these voltages are out of specification, troubleshoot the supply problem first.
Page 78 — If self–test still fails after disconnecting all the microcircuits, replace the A26 MID. 1201 Mod Filter 1. Disconnect the cable between the A23 Lowband Coupler/Detector and the A30 Modulation Filter, and connect a spectrum analyzer to the cable. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 79 “Troubleshooting RF Power Levels” on page 122, and compare them to the measured levels. — If both power levels are good, replace the A27 40 GHz Doubler. — If either power level is bad, troubleshoot the path. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 80 1. Disconnect the cable from J5 of A10 ALC, and connect the cable to a DVM (this is the lowband detector output). 2. On the signal generator, set the following: Center Frequency: 3 GHz Power: +20 dBm Pulse Modulation: On E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 81 — If the self–test passes, refer to “Troubleshooting the RF Path” on page 122, and check the lowband (<3.2 GHz) path. — If the self–test fails, refer to the A8 Output test troubleshooting. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 82 DVM. c. The signal should measure approximately +5.4 Vdc. 1. If the signal is bad, troubleshoot the RF path. 2. If the signal is good, replace the A36 Quadraplier. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 83: Self-Tests 12Xx: A26 Mid Self-Test Errors (E8267D)
+5.2 Digital high P201–33 P201–23 +5.04 +5.36 Main Supply +3.4 Digital Low P201–34 P201–24 +3.3 +3.5 Main Supply 1200 Power Supply 1. Press View Test Info and highlight Self Test 1200. Press View Details. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 84 — If the power level in both paths is bad, check the signal levels out of the A28 YIG Oscillator. 1202 A29 20 GHz Doubler 1. Disconnect the cable between the A28 YIG Oscillator and the A29 20 GHz Doubler, and connect a spectrum analyzer to the cable. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 85 6. If the signal at J3 is good, set the signal generator’s frequency to <1 GHz, the power to 0 dBm, and measure the dc voltage on the cable going to J5 on the A10 ALC. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 86 DVM (this is the lowband detector output). 2. On the signal generator, set the following: Center Frequency: 3 GHz Power: +20 dBm Pulse Modulation: On Period: 40s Pulse Wid th: 39.9s RF: On E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 87 — If the signal is bad, refer to the A13 I/Q Multiplexer troubleshooting. 3. If the signal is good, reconnect the cable to J6, remove the cable to J7 (Q), and connect this cable to the oscilloscope. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 88 26.667 GHz to 38 GHz and will be four times the IF frequency. The amplitude of the LO signal should be >5 dBm. — If the signal is bad, troubleshoot the A35 RF path. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 89: Self-Tests 13Xx: A11 Analog/Pulse Modulation Generator Self-Test Errors
Minimum Value Maximum Value Origin (Vdc) (Vdc) (Vdc) P132–28 +14.55 +15.45 Main Supply –15 P132–3 –14.55 –15.45 Main Supply +5.2 P132–2, 27 +5.04 +5.37 Main Supply –5.2 P132–1, 26 –5.3 –5.1 YIG Driver E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 90 1305 Not Used 1306 Standard 3 GHz Pulse — Replace A11 Pulse/Analog Modulation Generator. 1307 High Performance 3 GHz Pulse — Replace A11 Pulse/Analog Modulation Generator. 1308 Numeric Synthesizer — Replace A11 Pulse/Analog Modulation Generator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 91 — Replace A11 Pulse/Analog Modulation Generator. 1314 External 1 — Replace A11 Pulse/Analog Modulation Generator. 1315 External 2 — Replace A11 Pulse/Analog Modulation Generator. 1316 AM Path Loss — Replace A11 Pulse/Analog Modulation Generator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 92: Self-Tests 16Xx For The A14 Baseband Generator (Option 601/602)
+2.6 VD P161 – 57, 58, 59, 123, 124 +2.52 +2.68 Main Supply +1.95 VD P161 – 52, 118 +1.89 +2.01 Motherboard +1.8 VD P161 – 55, 56, 120, 121, +1.75 +1.85 Motherboard E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 93 — Replace the A14 Baseband Generator 1604 FLiegan <–> Apps 2 Comm — Replace the A14 Baseband Generator 1605 SRAM Test — Replace the A14 Baseband Generator 1606 SDRAM Test — Replace the A14 Baseband Generator E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 94 — If the –7 V supply voltage is bad at the A19 Power Supply, troubleshoot the A19 Power supply. 1609 IQ DAC Output — Replace the A14 Baseband Generator 1610 PLL Test — Replace the A14 Baseband Generator E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 95: Self-Tests 22Xx: A8 Output Self-Test Errors
–15.45 –14.55 Main Supply +5.2 P52–14, 29 +5.04 +5.36 Main Supply P52–5, 20 +8.82 +9.18 YIG Driver –6 P52–3, 18 –6.12 –5.88 YIG Driver 2200 Ground and PTAT Test — Replace A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 96 — Replace the A8 Output. 2204 Pulse Mod System Test — Replace the A8 Output. 2205 RF Path Test — Replace the A8 Output. 2206 Het Band Test — Replace the A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 97: Self-Tests 24Xx: A38 Lowband Filter Self-Test Errors
Main Supply +3.4 Digital Low P141–60, 61, 62, 63, +3.3 +3.5 Main Supply 125, 126, 127, 128 +2.6 P141–57, 58, 59, +2.52 +2.68 Main Supply 123, 124 +1.8 P141–55, 56, 120, –1.75 –1.85 Motherboard E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 98: Self-Tests 25Xx: A43 Amp Filter Self-Test Errors
— If the signal is troubleshoot the RF path. 2402 Lowband Amp/Filter Power Supply — Replace the A38 Lowband Filter. 2403 RF Path — Replace the A38 Lowband Filter. Self–Tests 25xx: A43 Amp Filter Self–Test Errors E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 99 — Replace the A43 Amp Filter. 2503 Pulse Modulator Test — Replace the A43 Amp Filter. 2504 Step Attenuator Test — Replace the A43 Amp Filter. 2505 Divider On/Off Test — Replace the A43 Amp Filter. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 100: Self-Tests 26Xx: A8 Output Self-Test Errors
P52–2, 17 –15.45 –14.55 Main Supply +5.2 P52–14, 29 +5.04 +5.36 Main Supply P52–5, 20 +8.82 +9.18 YIG Driver –6 P52–3, 18 –6.12 –5.88 YIG Driver 2600 Power Supply Test — Replace A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 101 2605 Bias Switch Test — Replace the A8 Output. 2606 Switched Filters Test — Replace the A8 Output. 2607 DAC Functionality Test — Replace the A8 Output. 2608 Het Band Test — Replace the A8 Output. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 102: Self-Tests 27Xx: A46 Offset Loop Self-Test Errors (Option Uny)
2802 ALC Mod System Test — Replace the A8. 2803 Pulse Mod System Test — Replace the A8. 2804 Clamp Detector Test — Replace the A8. 2805 Bias Switch Test — Replace the A8. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 103 Troubleshooting Troubleshooting Assembly–Level Problems 2806 Switch Filters Test — Replace the A8. 2807 DAC Functionality Test — Replace the A8. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 104: Troubleshooting Unlocks
1. Start narrowing the sweep frequency range and increasing the sweep time. 2. If making the sweep adjustments resolves the error, replace the A28 YIG Oscillator. 3. If the A28 YIG Oscillator does not resolve the error, replace the A9 YIG Driver. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 105: 512 A7 Reference Unlock
30 minutes. If it continues to be displayed after 30 minutes, replace the A7 Reference. 515 10 MHz Signal Bad A 515 10 MHz Signal Bad message indicates a problem on the A7 Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 106: 520 Sampler Unlocked
4. Probe the mmx connectors on the A31 Motherboard: Connector Signal right mmx connector 1 GHz >0 dBm from A7 Reference center mmx 5 GHz from A29 20 GHz Doubler –6 dBm connector E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 107: 625 Internal Pulse Generator Unlock
2. Measure pin P131–91. The waveform is not a sine wave, but more like a distorted pulse waveform >2 V 3. If the waveform is present, replace the A11 Pulse/Analog Modulation Generator. 4. If the signal is not present, replace the A7 Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 108: Troubleshooting Unlevels
— Turn Modulation Off — Turn RF On — Set Sweep to Frequency — Set Sweep Type to Step (if Option 007 is installed, you can use ramp sweep) — Set Start Frequency to 250 kHz E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 109 1EA/ 1E1+ Std. 1EA/ 1E1+ 1EA/ 1EA/ 1EA/ 250 kHz to 3.2 GHz 250 kHz to 3.2 GHz w/UNW 250 kHz to 3.2 GHz w/1EH 250 kHz to 3.2 GHz w/UNW + 1EH E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 110 With filters switched out Table 1-17 E8663D Maximum Leveled Power (dBm) Frequency All Models Std. 1E1+1EU 100 kHz to 3.2 GHz 100 kHz to 3.2 GHz w/UNX 100 kHz to 3.2 GHz w/1EH E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 111 J5 of A10 ALC (W14) is –0.117 Vdc. Using a power meter, measure the signal level at the end of the cable going to J3 of A30 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 112 7. Unleveled only between 2 GHz and the maximum frequency. If the unleveled condition occurs only for frequencies >2 GHz to the maximum frequency, the problem is most likely the A25 Highband Coupler/Detector. (Applies to all frequency options) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 113 +5.4 Vdc. — Set the amplitude to –15 dBm. The voltage on the center pin should decrease a few mVdc. — If the voltages are good, replace the A30 Modulation Filter. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 114 A35 20 GHz IQ Modulator, the A27 40 GHz Doubler, and the A37 Upconverter. 11.Unleveled at all frequencies. If the signal generator is unleveled at all frequencies, the problem is most likely the A10 ALC. a. Checking the A10 ALC: E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 115 Troubleshooting Troubleshooting Unlevels — Run a complete self–test and troubleshoot the reported failure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 116: Troubleshooting Adjustment Problems
External Input Peak Detector Calibration A11 Pulse/Analog Modulation Generator ALC Dynamic Calibration A10 ALC A30 Modulation Filter A8 Output Power Flatness Calibration A10 ALC RF Path ALC Modulator Calibration A30 Modulation Filter A8 Output E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 117 A14 Baseband Generator A13 IQ Mux A8 Output A35 3–20 GHz IQ Modulator A37 Upconverter Baseband Generator Timing Skew A14 Baseband Generator A13 IQ Mux VBand Level Accuracy AT1 Attenuator A24/25 67 GHz Coupler/Detector E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 118 Ad justment that is failing... Assemblies most likely causing failure... Upconverter Gain Adjust Calibration A37 Upconverter A35 3–20 GHz IQ Modulator Modulator Bias DAC Sensitivity A10 ALC A8 Output A30 Modulation Filter A36 Quadraplier A37 Upconverter E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 119: Troubleshooting Adc Adjustment Failures
6. If self–test fails, turn power off, reinstall the assemblies and remove the ribbon cable from J10 on the A26 MID (W35). 7. If self–test passes, replace the A26 MID. 8. If self–test fails, replace A18 CPU. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 120: Troubleshooting Performance Test Problems
Perform FM adjustments. If still failing check A11 Pulse/Analog Modulation Generator and A6 Frac–N. External Phase Modulation Deviation Accuracy Perform FM adjustments. If still failing check A11 Pulse/Analog Modulation Generator and A6 Frac–N. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 121 Single–Sideband Phase Noise Refer to “Troubleshooting the RF Path” on page 122. Internal EVM Digital Modulation Quality Perform I/Q and digital calibrations. Digital Modulation Power Relative to CW Perform I/Q and digital calibrations. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 122: Troubleshooting The Rf Path
Block Diagram, then measure the input and output power level for each device in the path until the defective part is located. ALC and RF problems 1. Run a full self–test and troubleshoot any reported failures before proceeding. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 123 4. Using the RF Path Block Diagram, check the power levels at the points shown. 5. Once the problem is located, verify that the cables between the two assemblies are good before replacing the assembly. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 124: Troubleshooting Pulse Modulation
10.If signal levels are good, replace the A8 Output. 11.If the signals are bad, check the cable continuity. If the cable is bad, replace the cable. If the cable is good replace the A11 Pulse/Analog Modulation Generator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 125: Troubleshooting At1 Attenuator
The attenuator in a E8267D signal generator steps (changes levels) every 5 dBm. In a E8257D Option 513/520/532/540 signal generator the attenuator steps 5 dBm for the first change, then ever 10 dBm. In a E8257D 550/67 signal generator the attenuator steps every 10 dBm.
Page 126 –75.0 to –84.99 dBm –85.0 to –94.99 dBm –95.0 to –104.99 dBm >–105.0 dBm 6. If the voltages are correct, replace the attenuator. 7. If the voltages are not correct, replace the A26 MID. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 127: Troubleshooting Harmonic Spurious
500 kHz and 3.2 GHz. 1. Set the signal generator as follows: — Frequency: set to harmonic frequency to be measured — Amplitude: +10 dBm — ALC Off — Amplitude Power Search (softkey) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 128 5. Using the delta marker, read the harmonic power level on the spectrum analyzer. Compare the spectrum analyzer reading to the specifications in Table on page 127. 6. If harmonics do not meet specification, replace the A29 20 GHz Doubler. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 129: 32 Ghz And 44 Ghz Models Only
6. If the harmonics do not meet specifications, replace the A37 20–44 GHz Upconverter. 40 GHz Models Only Use this procedure to troubleshoot harmonic problems with a fundamental frequency between 2 GHz and 20 GHz 1. Set the signal generator as follows: E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 130: 50 And 67 Ghz Models Only
33.5 GHz for Option 567. 1. Set the signal generator as follows: — Frequency: set to harmonic frequency to be measured — Amplitude +10 dBm — ALC Off — Amplitude Power Search (softkey) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 131 3, at the output of the A30 Modulation Filter. If there isn’t, or if the decrease is less than 15 dB, replace the A36 Quadraplier. 10.If the harmonics are decreased, replace the A30 Modulation Filter. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 132: Troubleshooting Non-Harmonic Spurious
These spurs are generated on the A5 Sampler. They are caused by harmonics of the Spurs A5 Sampler IF. The spurs are measured in highband at 133 kHz offset from the CW frequency. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 133: Troubleshooting Option Unr/Unx/Uny And Instruments With Serial Prefixes ≥ Us4805/My4805 Phase Noise
<100 Hz. In non–Option UNR/UNX and instruments with serial prefixes ≥ US4805/MY4805, the most likely assembly for <100 Hz offset is the A7 Reference. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 134: Overall Description
This regulation can take place on any assembly and then routed to the required assemblies. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 135: Input/Output Interface
(on the display). When a softkey is pressed, the displayed function changes. A2 Display A liquid crystal display (LCD) provides information about the instrument's settings and condition. The LCD requires a power supply, lighting, and data: E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 136: Frequency Generation
Lowband path, and part of 250 MHz highband path 4 to 8 GHz Oscillator output is divided by 2/4/8/16 on the A6 Frac–N assembly. 3.2 GHz E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 137 In vector models, the 20 GHz Doubler output is routed to the A35 3–20 GHz I/Q Modulator and then to the A30 Modulation Filter. The A35 3–20 GHz I/Q Modulator contains I and Q modulation circuits used to transfer I/Q information to the RF signal. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 138 Filter microcircuit. From this point, the low frequency signals flow to the front panel through the highband path. The following paragraph applies to E8257D instruments with Option 1EU and all E8663D instruments. The A43 Amp Filter assembly is added to the low band RF path. The RF signal flow goes from the A8 Output board into the A43 Amp Filter and then into the A23 Low Band Coupler.
Page 139 — After a phase detector determines the phase difference between the two signals, the phase detector output is integrated. The integrated voltage is summed with the A9 YIG Driver pre–tune DAC voltage, causing the YIG oscillator output frequency to change to the desired frequency. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 140 The reference voltage is generated on the A10 ALC by a DAC, the output voltage of which is the result of the power level set on the front panel. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 141 (Option 015) inputs. For signal generators with Option 601 or 602, the internal A14 Baseband Generator may be used as the source of the I/Q modulation. The A13 I/Q Multiplexer also routes the baseband I and Q, along with their inverses, to the rear panel. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 142 Option 601 provides 8 Msamples of playback memory, and Option 602 provides 64 Msamples of playback memory. The A14 Baseband Generator is also capable of generating two–tone or up to 64 multitones within its RF modulation bandwidth. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 143 Only Trigger Out Sweep Out p-anaphoto_top A18 CPU 120 Vac A19 Power Supply A22 Line Module 240 Vac A31 Motherboard Photograph: 67 Ghz Model (Option 567) Block Diagram for the Overall E8257D PSG Analog Signal Generator, Service Guide E8251-90359 57d_ovr-all...
Page 144 Synthesis Loop A9 YIG Driver Microwave / RF Path Trigger & Timing FM Driver A26 Microwave Interface Deck Control Phase Lock Coil A27 3-40 GHz Interface A37 20 - 44 GHz Upconverter 3.2 to Doubler Sweep 3.2 to 10 GHz (models >...
Page 145: Reference/Synthesis Loop Description
When the two signals are in phase, the output of the phase comparator is 0 volts. If the two signals are not in phase, the phase detector generates a voltage proportional to the phase (frequency) difference or error. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 146 The A6 Frac–N divide numbers are updated at filter switch points and at band crossings. During multiple band sweeps, the A9 YIG Driver Sweep DAC, DDS, and delay compensation are updated at band crossings. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 147: A5 Sampler (Cw Mode Only)
A5 Sampler, small changes in the Frac–N programmable divider number result in small changes in the A6 Frac–N VCO output frequency, which result in small changes in the YIG Oscillator frequency. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 148: A7 Reference
10 to achieve 1 GHz, and a high performance 10 MHz OCXO. The A7 Reference contributes to phase noise between 100 Hz and 10 KHz. See “A6 Frac–N” assembly description on page 149, for more information on phase noise. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 149: A9 Yig Driver
RF output frequency always sweeps at the desired sweep rate. The amount the programmable counter increments the sweep DAC depends on the required tune voltage. The YIG tunes from the start E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 150: A28 Yig Oscillator (Yo)
250 MHz and 2 GHz, with reduced power between 250 MHz and 2 GHz. In IQ mode, filters are on between 10 MHz and 2 GHz, with reduced power between 10 MHz and 2 GHz, and degrade IQ bandwidth. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 151 A9 YIG Driver A6 Frac-N (Fine Tune) A29 20 GHz Doubler Lowband Frec-N to / from Divide Sweep Start / Stop Retrace (Rear Pnl) 3-10 H_FM_INV MOD_CONTROL Z-axis / Blanking (Rear Pnl) Sweep Control 3.2-10GHz Stop Sweep (Rear Pnl) to A6 Frac-N from Sweep Level (to A10) 3.2 - 10 GHz...
Page 152: Rf Path Description (Frequency Generation, Level Control, And Modulation)
— A38 Switch Filter (< 3.2 GHz if Option 1EH is installed) — A43 Lowband Amp Filter — AT1 Attenuator (if Option 1E1 is installed). Analog models have a 90 dB step attenuator and vector models have a 115 dB step attenuator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 153: A6 Frac-N
A6 Frac–N output. Turn the instrument off before reinstalling the A8 Output. 1. Instruments with serial prefix ≥ 4829. 2. Instruments with serial prefix < 4829. 3. Instruments with serial prefix ≥ 4829. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 154: A8 Output
A8 Output to the UNW hardware, and the pulse diode on the A8 Output is biased on, allowing the RF signal to pass through. The pulse shaper circuitry on the A11 Pulse Modulator needs to be set using a license key to provide narrower pulse widths. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 155: A23 Lowband Coupler/Detector, A24 Highband Coupler, And A25 High Band Detector
The A29 20 GHz Doubler provides RF signals to the: — synthesis loop (described on page 147) — low (< 3.2 GHz) band RF path (to the A6 Frac–N) — high (> 3.2 GHz) band RF path E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 156: A30 Modulation Filter
The I and Q inputs to the A35 3–20 GHz I/Q Modulator are from the A13 I/Q Multiplexer. The A13 I/Q Multiplexer receives inputs from the External I/Q Mod inputs and, if installed, the Option 601/602 Baseband Generator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 157: A36 Quadraplier (Analog Models > 40 Ghz)
Instruments with Option 015 route the rear panel wideband IQ inputs directly to the IQ modulator. Swap the I and Q signals when using the rear panel wideband IQ inputs at RF > 20 GHz and < 28.5 GHz. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 158: Alc Loop
Level accuracy is a function of the detector and instrument calibration. Because the instrument is calibrated with internal detectors, external level accuracy depends on the difference in characteristics between the internal and external detectors. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 159: Modulation (Option Unt-Am, Fm, Φm, Unu-Standard Pulse, And Unw-Fast Pulse)
Frac–N VCO. This generates a change in the pre–scaled drive (feedback from the VCO) to the VCO’s phase detector, causing a VCO frequency change. — FM rates 4 kHz to 100 kHz are applied only to the A6 Frac–N VCO. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 160: Digital Modulation
The output section of the A14 Baseband Generator consists of two 16–bit DACs: one for the I signal and one for the Q signal. The data produced from these I/Q signals is converted to analog, E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 161 (A2–FPGA/Modulator/Filter), and finally to the output section. I and Q DACs at the output convert the digital waveform data to analog. The I and Q output DACs are driven by a sample clock generated by an on–board VCO. The VCO E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 162: Approximate Device Gains And Losses
> 1 J1 to J3 and J4 Loss < 18 A35 3–20 GHz I/Q Mod. Bypass mode, J5 to J1 3.2 to 12.8 GHz Gain > 0 12.8 to 20 GHz Loss < 2 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 163 20 GHz, J1 to J4, J1@ <–10.5 dBm Gain >21 40 GHz, J1 to J4, J1@ <–8.5 dBm >21 44 GHz, J1 to J4, J1@ <–5 dBm >18 A38 Low Band Switch Filter Loss <8.5 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 164 A26 Micro Interface Deck A9 YIG Driver MODF_PLS_ ENB_L DBL40_LPF ATTEN to / from DBL20_AMP_ON_H Sweep Start / Stop Retrace (Rear Pnl) DBL40_BIAS Models up to 40 GHz. DBL40_PATH Z-axis / Blanking (Rear Pnl) DBL20_PATH Sweep Control MODF_PATH Stop Sweep (Rear Pnl) MODF_AMP_ON_H See next sheet for DBL40_AMP...
Page 165 40 - 70 GHz ALC Mod from A10 ALC 20 - 40 GHz ALC Mod from A10 ALC 3.2 - 20 GHz ALC Mod from A10 ALC Quadraplier Block for the E8257D PSG Analog RF Path (Analog Models Over 40 GHz), Service Guide E8251-90359 57d_67-70ghz-path...
Page 166 A30 Mod/Filter uckt Option 521 3-20 GHz 0.01-20 GHz Power Amp uckt ** A28 YTO 3-10 GHz A29 20 GHz Doubler uckt Pulse A24 2-20 GHz 5/10/40/20/40 0-20 GHz ALC Det 3-10 output Optional Attenuator Opt 1EW only 0-3.2 GHz ** Not Necessary for E8663B 0-3.2 GHz Sampler...
Page 167 A45 FRAC-N BOARD PRESTO FM Input from MOD 2-4 GHz 1-2 GHz A46 OFFSET BOARD ESOT BOARD (A11) FN Loop YOL_REF Mode A Mode A A9 YIG 50 MHz DRIVER Mode B 62.5 to BOARD Mode B 125 MHz YOL_IF YIG Loop 3200 to 10000 MHz Step Generator...
Page 168 EXT_OUT_I_GAIN EXT_OUT_I_OFFSET_DAC A13 I/Q Mux EXT_OUT_Q_GAIN EXT_OUT_Q_OFFSET_DAC EXT_OUT_SEL A Bus I OUT Q OUT A26 Micro Interface Deck I and Q A9 YIG Driver MODF_PLS_ I and Q Σ I INPUT I and Q ENB_L Σ ATTEN A Bus to / from SUM_SW1 A Bus Sweep Start / Stop...
Page 169 A26 Micro Interface Deck MODF_PLS_ENB_L MODF_PATH MODF_AMP_ON_H UPC_BYPASS_L UPC_LPF_SEL DBL40_PATH DBL40_BIAS UPC_AMP_ON_H DBL40_AMP DBL40_ LPF UPC_BPF_SEL UPC_PLS_ENB_L ATTEN DBL40_LPF to A35 I/Q Modulator A37 20 - 44 GHz Upconverter A27 40 GHz Doubler 6 Filters 20-44 GHz 20-26 20-40 0-40 A24 Coupler Pulse Doubler...
Page 170: Vector Low Band Rf Path
A30 Mod/Filter uckt 3-20 GHz A35 3-20 GHz IQ Modulator uckt A28 YTO Analog Bypass A29 20 GHz Doubler uckt 3-10 GHz Pulse 2-20 GHz 5/10/40/20/40 0-20 GHz ALC Det 3-10 Corax output Optional Attenuator Gain Adj 0-3.2 GHz Wideband Narrowband with Fireblade 0-3.2 GHz...
Page 171: Self-Test Overview
If A2 passes and A3 fails, self–test reports A3 as the most independent failure. If two independent failures occur, self–test reports only one failure at a time and reports the second failure after the first reported failure is repaired. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 172 — Select/Deselect — Run Highlighted Tests Test — Run Selected Tests — Select/Deselect — View Details — When View Details is selected, the highlighted test’s measured value, lower, and upper limits are displayed. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 173: Contacting Keysight Technologies
Did the instrument fail when it arrived, has it been degrading over time, or was it working for some time and then failed? Describe the problem: What action has been taken: If you are having a problem with performance tests or ad justments Software revision: E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 174 Contacting Keysight Technologies Name of adjustment or performance test: Reported software message: Describe the problem: If you are having a problem with an application Describe what you want to do: Describe the problem: E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 175: Keysight Sales And Service Offices
Assistance with test and measurements needs, and information on finding a local Keysight office is available on the Web at: http://www.keysight.com/find/assist You can also purchase E8257D/67D PSG accessories or documentation items on the web at: http://www.keysight.com/find/psg If you do not have access to the Internet, please contact your field engineer.
Page 176 Troubleshooting Contacting Keysight Technologies E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 177: Replaceable Parts
1. Determine the part number. 2. Determine the quantity required. 3. Mail this information to the nearest Keysight Technologies office or, in the U.S., call the hot–line number listed in the following section. To order a part not listed in the replaceable parts lists, mail the following information to the nearest Keysight Technologies office or, in the United States, call the hot–line number listed in the following section.
Page 178: Frequency, Hardware, And Personality Options
Adds output step attenuator for extended range to −135dBm (E8257D and E8663D Only) 1EA (Discontinued) Adds high RF output power +20dBm at 20 GHz, +14 dBm at 40 GHz (E8257D Only) Specifies Type–N RF output connector (20 GHz models only)
Page 179 Table 2-2 Hard ware Options Adds analog ramp sweep Adds 8 GB flash drive (E8257D and E8663D Only) Adds 8 GB flash drive (Option 601/602 required) (E8267D Only) 015 (Discontinued) Adds wideband (single-ended) external I/Q input ports (1GHz) (E8267D Only)
Page 180: Assemblies
E8251–60075 prefixes < US4928/MY4928) 2-199, and 2-200 A8 Output (for instruments with serial 2-198, E8251–60434 prefixes ≥ US4928/MY4928) 2-199, and 2-200 A8 Output (for instruments with serial 2-201 E8251–60340 prefixes < US5042/MY5042) 2-202 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 181 2-202 (E8257D instruments with serial prefixes < US4928/MY4928) A12 Pulse Modulator Board (Instruments with E8251–63634 2-201 Option UNW and HAR) (E8257D instruments with 2-202 serial prefixes < US4928/MY4928) A13 I/Q MUX (For instruments with serial E8251–60208 2-201 prefixes < US4722/MY4722)
Page 182 2-203, and 2-204 A26 MID (Microwave Interface Deck) E8251-60658 2-198, E8251-60657 2-201, 2-199, 2-202 2-200, 2-205 2-203, and 2-204 A27 40 GHz Doubler (Options 532, 540 and 544) 5087-7717 2-198 5087-7717 2-202 2-203 2-205 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 183 A32 10 MHz Crystal Oscillator E8251–60071 2-198, E8251–60071 2-201 (Option UNR – Discontinued) 2-199 2-202 2-200 A33 3.5 6 dB PAD (E8257D Option 521 and E8267D 08493-60026 2-199 08493-60026 2-201 Option 513 and 520) 2-204 A33 3.5 10dB PAD (Options 532/544) 08493-60027...
Page 184 33328-60006 2-198, 33328-60007 2-201, (Options 503, 509, 513, 520, 521, 532, 540, and 544) 2-199, 2-202, and 2-203, 2-207 2-204 2-206 AT1 90 dB Mechanical Attenuator 84908-60006 2-200 (Options 550 and 567) 2-204 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 185 Requires firmware version C.04.17 or greater. d. Requires firmware version C.04.53 or greater. e. Requires the temperature compensation resistor pack on A25B to be installed. f. Requires firmware version C.05.31 or greater. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 186: Assemblies From The Inside Front Panel View
Assemblies from the Inside Front Panel View Figure 2-1 Assemblies from the Inside Front Panel View for with serial prefixes < US/MY5XXX3XXX 1. Applicable if the A2 does not have the most current LCD. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 187 Replaceable Parts Assemblies from the Inside Front Panel View Figure 2-2 Assemblies from the Inside Front Panel View for with serial prefixes ≥ US/MY5XXX3XXX E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 188: Assemblies From A Top View
Replaceable Parts Assemblies from a Top View Assemblies from a Top View Figure 2-3 Assemblies from a Top View (E8257D Option 513/520/540 and E8663D) (Option UNR/UNX/UNY) (instruments with serial prefixes > US4805/MY4805) Option 540 A25B (A45) (A46) (Option 1E1) (Option UNY)
Page 189 Replaceable Parts Assemblies from a Top View Figure 2-4 Assemblies from a Top View (E8257D Option 521) (under A40) (Option UNX/UNY) A25B (A46) (A45) (Option 1E1) (Option UNY) (Option UNY) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 190 Replaceable Parts Assemblies from a Top View Figure 2-5 Assemblies from a Top View (E8257D Option 550/567) (Option UNR/UNX/UNY) (instruments with serial prefixes > US4805/MY4805) A25B (A46) (A45) (Option UNY) (Option UNY) (Option 1E1) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 191 Replaceable Parts Assemblies from a Top View Figure 2-6 Assemblies from a Top View (E8267D Option 513/520) (Option UNR/UNX/UNY) (instruments with serial prefixes > US4805/MY4805) A25B (A45) (A46) p_dig_top (Option UNY) (Option UNY) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 192 Assemblies from a Top View (E8267D Option 532/544) (Option 005 – Discontinued) (Option UNR/UNX/UNY) (instruments with serial prefixes > US4805/MY4805) under the over) A25B (Options 532 & 544 Only) (A46) (A45) (Option UNY) (Option UNY) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 193: Assemblies From A Microcircuit Deck View
Replaceable Parts Assemblies from a Microcircuit Deck View Assemblies from a Microcircuit Deck View Figure 2-8 Assemblies from a Microcircuit Deck View (E8257D Option 513/520/540 and E8663D) A25B (Option 540) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 194 Replaceable Parts Assemblies from a Microcircuit Deck View Figure 2-9 Assemblies from a Microcircuit Deck View (E8257D Option 521) A25B Figure 2-10 Assemblies from a Microcircuit Deck View (E8257D Option 550/567) A25B E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 195 Replaceable Parts Assemblies from a Microcircuit Deck View Figure 2-11 Assemblies from a Microcircuit Deck View (E8267D Option 513/520) A25B Figure 2-12 Assemblies from a Microcircuit Deck View (E8267D Option 532/544) A25B E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 196: Assemblies From A Bottom View
Replaceable Parts Assemblies from a Bottom View Assemblies from a Bottom View Figure 2-13 Assemblies from a Bottom View (E8257D and E8663D) Option 521 only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 197 Replaceable Parts Assemblies from a Bottom View Figure 2-14 Assemblies from a Bottom View (E8267D) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 198: A18Bt1 Lithium Battery
Replaceable Parts A18BT1 Lithium Battery A18BT1 Lithium Battery Figure 2-15 A18BT1 Lithium Battery A18BT1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 199: Cables
< US/MY5XXX3XXX for instruments with serial A3 Power Switch (DATA CABLE) A2 Display 8121–0689 prefix ≥ US/MY5XXX3XXX A3P1 A31P11 8121–0614 A9J3 A31J1031 8121–0624 A9J4 A31J1021 8121–0624 A9J5 A28J1 8121–0608 A10J201 A30J6 8121–0624 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 200 Option 1E1) Semi–Rigid Cable, A23 Lowband A30J3 E8251–20031 Coupler/Detector A23J100 A26J15 8121–0616 A27J10 A26J33 8121–0613 A27J2 A24 Highband Coupler (input) E8251–20578 (Option 540) A27J3 A30J2 E8251–20023 (Option 540) A27J1 A30J4 E8251–20022 (Option 540) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 201 Rear Panel (10 MHz EFC) 8120-6839 Front Panel (I IN) A13J7 8121-0901 (E8267D) Front Panel (Q IN) A13J8 8121-0901 (E8267D) Front Panel (DATA) A31J500 8121-0628 (E8267D) Front Panel (DATA CLOCK) A31J501 8121-0628 (E8267D) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 202 A34 Internal Hard Drive 8121-0685 (E8267D) Semi-Rigid Cable, A31 Motherboard Rear Panel E8251-20223 (E8267D) (.25-3.5 GHz COH CARRIER) A17P4 A31J250 8121-0925 (E8267D) A26J14 A12 Pulse Modulator Board 8121-0912 A26J34 A35 I/Q MOD 8121-0615 (E8267D) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 203 <US4722/MY4722) A35J106 Rear Panel 8121-0628 (E8267D with prefixes (WIDEBAND I INPUT) <US4722/MY4722) Semi-Rigid Cable, A24 67 GHz High AT1 90 dB Mechanical Attenuator E8251-20320 (1.85 mm connector) band Coupler (output) (input) (Option 1EM) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 204 (Options 532 & 544) A24 50 GHz Highband Coupler Attenuator (input) (Option 1EM) (output) Semi-Rigid Cable, AT1 90 dB 1.85 mm RF Output connector E8251-20322 (Options 550 & 567) Mechanical Attenuator (output) (Option 1EM) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 205 (Options 550 & 567) W107 A36J2 A30J2 E8251-20314 (Options 550 & 567) W108 A36J4 A30J6 8120-6990 (Options 550 & 567) W109 A10J201 A36J3 8120-6990 (Options 550 & 567) W110 A10J202 A37J6 8121-6990 (Options 532 & 544) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 206 W137 1 GHz Out (Rear Panel) E8251-20026 prefix < US/MY5644 for instruments with serial W137 1 GHz Out (Rear Panel) E8251-20580 prefix ≥ US/MY5644 A10J303 Rear Panel (ALC HOLD) 0625-4806 W122 (E8267D) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 207 A40 Compact Flash PCA 8182-1807 W136 W137 Semi-Rigid, A31 Motherboard W121 E8251-20595 (Reference) W138 Semi-Rigid, A43 Lowband Amp Filter W140 E8251-20489 W139 A43 Lowband Amp Filter A11J204 8120-6990 W140 Semi-Rigid, W138 A31 Motherboard (Output) E8251-20488 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 208 E8257D-520) W153 (E8267D) A31J1056 A31J1057 8121-1302 W154 (Option 1SM only) A44J3 A10J301 8120-6993 W155 (Option UNY) A4554 AH654 8121-0646 a. This cable is not replaceable by itself. You must order the corresponding assembly. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 209 W130, the first time. g. For instruments with serial prefixes < US4722/MY4722 you must replace the two matched cables, W131 and W132, the first time. h. For instruments with serial prefixes US4829/MY4829. ≥ E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 210: Hardware
“Type-N RF Output Connector (Option 1ED Models Only)” on page 243 — “Main Chassis with Inside Cover and Right-Side Support Wall” on page 244 — “Outer and Inner Instrument Covers and Associated Parts” on page 246 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 211: Front Panel View
Replaceable Parts Hardware Front Panel View Table 2-5 Front Panel View Item No. Description Part Number Small Overlay (E8257D & E8663D Option UNM and All Option 1EM) light color E4400-80011 dark color E8251-80428 Small Overlay (E8267D) Option UNM light color E4400-80006...
Page 212 E8663-80004 dark color E8251-80424 RPG Knob light color E4400-40003 dark color E8251-40211 Large Keypad Overlay (E8257D & E8663D) Option UNM light color E8251-80001 dark color E8251-80400 Large Keypad Overlay (E8267D) Option UNM light color E8251-80201 dark color E8251-80413 Large Keypad Overlay (E8257D &...
Page 213 Replaceable Parts Hardware Figure 2-16 Front Panel View E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 214: Disassembled Front Panel View
Screw-Machine M3.0 x 06 CW-PN-TX 0515-0372 Screw-Machine M3.0 x 08 FL-TX 0515-1035 a. If this part number is out of stock, you can order the part number listed for instruments with serial pre- fixes US/MY5644 ≥ E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 215 Replaceable Parts Hardware Figure 2-17 Disassembled Front Panel View E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 216: Disassembled Rear Panel View
Part Number Rear Panel (E8257D & E8663D), Serial prefix < 4829 E8251-00020 Serial prefix > 4829 E8251-00353 Rear Panel (E8257D & E8663D) Option 1EM, Serial prefix < 4829 E8251-00013 Serial prefix > 4829 Rear Panel (E8267D), Serial prefix < 4829 E8251-00021 Serial prefix >...
Page 217 Right Rear Strut (E8257D & E8663D) E8251-00006 Right Rear Strut (E8267D) E8251-00308 Left Rear Strut (E8257D & E8663D) E8251-00030 Left Rear Strut (E8267D) E8251-00200 Shouldered Washer (E8267D) 00310-48801 Figure 2-18 E8257D/E8663D Disassembled Rear Panel View E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 218 Replaceable Parts Hardware Figure 2-19 E8267D Disassembled Rear Panel View E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 219: Disassembled A32 10 Mhz Crystal Oscillator
E8251-00040 Shock Mount 1520-0205 Flathead Washer 3050-0105 Screw-Machine 4.0 x 40 .250 2200-0103 L-Bracket E8251-00041 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 Nut-Hex M3.0 (line module ground) 0535-0031 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 220 Replaceable Parts Hardware Figure 2-20 Disassembled A32 10 MHz Crystal Oscillator (Option UNR/UNX and Instruments with Serial Prefixes US4805/MY4805) ≥ E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 221: Disassembled At1 90Db/115Db Attenuator View (Option 1E1)
Disassembled AT1 90dB/115dB Attenuator View (Option 1E1) Table 2-9 Disassembled AT1 115 dB Attenuator View (Option 1E1) Item No. Description Part Number Bracket E8251-00038 Screw-Machine M3.0 x 8 FL-TX 0515-1035 Figure 2-21 Disassembled AT1 90dB/115dB Attenuator View (Option 1E1) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 222: Disassembled A24 20Ghz/40Ghz Highband Coupler And A25B Highband Detector Bias Board (Options 503, 509, 513, 520, And 540)
Part Number Coupler Bracket E8251-00039 Washer Lock M2.0 2190-0654 Screw-Machine SM 256 .250 PN-PN 0520-0128 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 Figure 2-22 Disassembled A24 20GHz/40GHz Highband Coupler and A25B Highband Detector Bias Board E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 223: Disassembled A24 20Ghz Highband Coupler And A25B Highband Detector Bias Board (Option 521)
Part Number Coupler Bracket (Option 521) E8251-00356 Screw-Machine M4.0 x .312 PN-PN 0520-0128 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 Figure 2-23 Disassembled A24 20GHz Highband Coupler and A25B Highband Detector Bias Board (Option 521) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 224: Disassembled A24 50Ghz Highband Coupler And A25B Highband Detector Bias Board
Description Part Number Coupler Bracket (Option 532/544) E8251-00300 Screw-Machine M4.0 x .312 PN-PN 2200-0103 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 Figure 2-24 Disassembled A24 50GHz Highband Coupler and A25B Highband Detector Bias Board E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 225: Disassembled A24 67Ghz Highband Coupler And A25B Highband Detector Bias Board
Description Part Number Coupler Bracket (Option 550/567) E8251-00306 Screw-Machine M4.0 x .312 PN-PN 0515-0658 Screw-Machine M3.0 x 8 CW-PN-TX 0515-0372 Figure 2-25 Disassembled A24 67GHz Highband Coupler and A25B Highband Detector Bias Board E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 226: Microcircuit Interface Deck Top View
Microcircuit Interface Deck Top View Item No. Description Part Number Screw-Machine M3.0 x 14 CW-PN-TX 0515-0665 Figure 2-26 E8257D & E8663D Microcircuit Interface Deck Top View Figure 2-27 E8267D Microcircuit Interface Deck Top View E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 227: Main Chassis And Mid Bottom View
Screw-Machine M30. x 20 CW-PN-TX (A30 Modulator Filter with Standard or 0515-1410 High Power to MID) Screw-Machine M30. x 20 CW-PN-TX (A29 20 GHz Doubler to MID) 0515-1410 Screw-Machine M30. x 20 CW-PN-TX (A13 I/Q MUX to MID) (E8267D) 0515-1410 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 228 Replaceable Parts Hardware Figure 2-28 Main Chassis and MID Bottom View (E8257D & E8663D) (3 places) (15 places) (2 places) (3 places) (2 places) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 229 Replaceable Parts Hardware Figure 2-29 Main Chassis and MID Bottom View (E8267D) (3 places) (8 places) (2 places) (2 places) (3 places) (15 places) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 230: Mm Rf Output Connector (Option 567 Only)
Screw-Machine M4.0 x 10 FL-TX (front frame to adapter bracket) 0515-1269 Washer lock .377ID 2190-0104 Nut-Hex 2950-0132 W92 Semi-Rigid Cable (refer to Table 2-4 on page 209.) Figure 2-30 1.85 mm RF Output Connector (Option 567 Only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 231: 2.4 Mm Rf Output Connector
Part Number Adapter-Male 2.4 mm 5063-1700 Adapter Bracket E8251-00216 Screw-Machine M4.0 x 10 FL-TX (front frame to adapter bracket) 0515-1269 Washer lock .377ID 2190-0104 Nut-Hex 08360-20133 Figure 2-31 2.4 mm RF Output Connector E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 232: Apc 3.5 Rf Output Connector (Options 513 And 520 Only)
Screw-Machine M4.0 x 10 FL-TX 0515-1269 Washer lock .377ID 2190-0016 Nut-Hex 2950-0001 W86 Semi-Rigid Cable (refer to Table on page 209.) Figure 2-32 APC 3.5 RF Output Connector (Options 513 and 520 Only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 233: Type-N Rf Output Connector (Option 1Ed Models Only)
Item No. Description Part Number Adapter-Type-N (f) 08559-60002 Spacer E8251-20067 Adapter Bracket E8251-00216 Screw-Machine M4.0 x 10 FL-TX 0515-1035 Washer lock 2190-0102 Nut-Hex 2950-0132 Figure 2-33 Type-N RF Output Connector (Option 1ED Models Only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 234: Main Chassis With Inside Cover And Right-Side Support Wall
Main Chassis with Inside Cover and Right-Side Support Wall Item Description Part Number Main Chassis Inside Top Cover (E8257D & E8663D) E8251-00342 Main Chassis Inside Top Cover (E8267D) E8251-00208 Screw-Machine M3.0 x 08 FL-TX (inside top cover to main chassis and rear panel) 0515-0430 Screw-Machine M3.0 x 08 CW-PN-TX (rear panel to right-side support wall)
Page 235 Replaceable Parts Hardware Figure 2-34 Main Chassis with Inside Cover and Right-Side Support Wall E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 236: Outer And Inner Instrument Covers And Associated Parts
1460-1345 Screw-Machine M4 x 0.7, 8 mm FL-TX 0515-1269 Outside Instrument Cover light color E8251-00012 dark color E8251-00382 Trim-Side Overlay (Refer to Figure 2-36 on page 247) light color 5041-9172 dark color 5041-7905 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 237 Replaceable Parts Hardware Figure 2-35 Outer and Inner Instrument Covers and Associated Parts Figure 2-36 Trim-Side Overlay (Installed) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 238: Miscellaneous
Replaceable Parts Miscellaneous Miscellaneous This section lists part numbers for miscellaneous items that can be used with your signal generator. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 239: Accessories
Specifications/Data Sheet (E8267D) 5989-0697EN Specifications/Data Sheet (E8257D) 5989-0698EN Specifications/Data Sheet (E8663D) 5989-4866EN The E8257D/67D & E8663D PSG documentation can also be found on the web at http://www.keysight.com/find/psg Electrostatic Discharge (ESD) Protective Supplies Table 2-24 Electrostatic Discharge (ESD) Protective Supplies Description...
Page 240 ESD connector end cap coherent carrier cut 1252-4696 2 X 4 Ft. Antistatic Table Mat with 15 FT. Ground Wire 9300-0797 5 Ft. Grounding Cord (for wrist strap) 9300-0980 Adjustable Antistatic Wrist Strap 9300-1367 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 241: Abbreviations Used In Part Descriptions
(screws) external flathead (screws) feet hexagonal GPIB general purpose interface bus hexagonal recess (screws) in-phase low frequency meters or metric hardware patch lock (screws) or printed circuit panhead (screws) quadrature quantity radio frequency E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 242 Replaceable Parts Abbreviations Used in Part Descriptions Table 2-26 Abbreviation Definition reverse power protection subminiature type-A TORX recess (screws) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 243: Assembly Replacement
Keysight PSG Signal Generators E8257D/67D, E8663D Service Guide Assembly Replacement Before You Replace an Assembly Many of the assemblies in this instrument are very susceptible to damage from electrostatic discharge (ESD). Perform service procedures only at a static–safe workstation and wear a grounding strap.
Page 244: Assemblies That You Can Replace
“A24 20 GHz Highband Coupler (Options 503, 509, 513, 520, and 521)” on page 312 — “A24 50 GHz Highband Coupler (Options 532 and 544)” on page 319 — “A24 67 GHz Highband Coupler (Options 550 and 567)” on page 321 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 245 “A29 20 GHz Doubler” on page 343 — “A30 Modulation Filter (Standard and Option 1EA/1EU)” on page 345 — “A31 Motherboard (E8257D & E8663D)” on page 348 — “A31 Motherboard (E8267D)” on page 351 — “A32 10 MHz Crystal Oscillator” on page 354 —...
Page 246 “A42 20 GHz Power Amp (Option 521)” on page 385 — “A43 Lowband Amp Filter” on page 387 — “A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only)” on page 389 — “AT1 90 dB Attenuator” on page 391 —...
Page 247 Assembly Replacement Assemblies That You Can Replace This page intentionally left blank. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 248: Outer Instrument Cover
6. Tilt the signal generator forward and slide the outer cover (6) back to remove it from the frame. Replacement Procedure — Reverse the order of the removal procedures. — Torque all T–15 screws to 21 in–lbs. — Torque all T–20 screws to 21 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 249 Assembly Replacement Outer Instrument Cover Figure 3-1 Outer Instrument Cover Removal E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 250: Inner Instrument Cover
4. Using the T–10 driver, remove all twenty-two screws (1) from the inner cover (2). 5. Remove the inner cover. Replacement Procedure — Reverse the order of the removal procedures. — Torque all T–10 screws to 9 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 251 Assembly Replacement Inner Instrument Cover Figure 3-2 Inner Instrument Cover Removal E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 252: Front Panel
Generator J401 (non–1EM signal generators only). — W2 (EXT 2 INPUT) from the A11 Pulse/Analog Modulation Generator J402 (non–1EM signal generators only). — W3 (LF OUTPUT) from the A11 Pulse/Analog Modulation Generator J403 (non–1EM signal generators only). E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 253 And for serial number prefix ≥ US/MY5XXX3XXX, disconnect the A2W1 display cable from the A31 Motherboard P12. (refer to Figure 3-4). 11.Disconnect the W9 ribbon cable from the A31 Motherboard P11. 12.Remove the front panel. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 254: Replacement Procedure
4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-3 Front Panel Removal with serial prefixes < US/MY5XXX3XXX 1. Applicable if the A2 does not have the most current LCD. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 255 Assembly Replacement Front Panel Figure 3-4 Front Panel Removal with serial prefixes ≥ US/MY5XXX3XXX E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 256: A1 Keyboard
12.Remove the A1 Keyboard. Replacement Procedure 1. Reverse the order of the removal procedures. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 257 Assembly Replacement A1 Keyboard Figure 3-5 A1 Keyboard Removal with serial prefixes < US/MY5XXX3XXX 1. Applicable if the A2 does not have the most current LCD. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 258 Assembly Replacement A1 Keyboard Figure 3-6 A1 Keyboard Removal with serial prefixes ≥ US/MY5XXX3XXX E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 259: A2 Display
A31 Motherboard P12 since the A4 is now integrated into the A2 Display. For instruments with serial number prefix ≥ US/MY5XXX3XXX, reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 260 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-7 A2 Display Removal with serial prefixes < US/MY5XXX3XXX 1. Applicable if the A2 does not have the most current LCD. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 261 Assembly Replacement A2 Display Figure 3-8 A2 Display Removal with serial prefixes ≥ US/MY5XXX3XXX E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 262: A2Ds1 Display Backlight (Serial Number Prefix < Us/My5Xxx3Xxx Only)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 263 Assembly Replacement A2DS1 Display Backlight (serial number prefix < US/MY5XXX3XXX only) Figure 3-9 A2DS1 Display Backlight Removal E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 264: A3 Power Switch
5. Remove the A3 Power Switch. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 265 Assembly Replacement A3 Power Switch Figure 3-10 A3 Power Switch Removal with serial number prefix < US/MY5XXX3XXX 1. Applicable if the A2 does not have the most current LCD. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 266 Assembly Replacement A3 Power Switch Figure 3-11 A3 Power Switch Removal with serial number prefix ≥ US/MY5XXX3XXX E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 267: A4 Inverter (Serial Number Prefix < Us/My5Xxx3Xxx Only)
5. Remove the A4 Inverter by carefully pulling it away from the front panel. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 268 Assembly Replacement A4 Inverter (serial number prefix < US/MY5XXX3XXX only) Figure 3-12 A4 Inverter Removal E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 269: A5 Sampler, A6 Frac-N, A7 Reference
5. Lift the board assembly out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 270 Output, A45 Frac-N and A46 Offset Figure 3-13 A5 Sampler, A6 Frac–N, A7 Reference, A8 Output, A45 Frac-N and A46 Offset A6/A45 A5/A46 Figure 3-14 W155 Reference (Option UNY) with A45 and A46 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 271: A9 Yig Driver
7. Lift the A9 YIG Driver out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 272 Assembly Replacement A9 YIG Driver Figure 3-15 A9 YIG Driver W12/A9J5 W10/A9J3 W54/A9J9 W11/A9J4 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 273: A10 Alc
6. Lift the A10 ALC out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 274 Assembly Replacement A10 ALC Figure 3-16 A10 ALC W4/A10J4 W14/A10J5 W13/A10J201 W122/A10J303 W55/A10J304 (E8267D only) W15/A10J3 W111/A10J203 (Option 550/567) Option 550/567– W95/A10J202 Option 532/544– W110/A10J202 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 275: A11 Pulse/Analog Modulation Generator
6. Lift the A11 Pulse/Analog Modulation Generator out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 276 Assembly Replacement A11 Pulse/Analog Modulation Generator Figure 3-17 A11 Pulse/Analog Modulation Generator W16/A11J204 W96/A11J206 W3/A11J403 W7/A11J202 W5/A11J201 W2/A11J402 W17/A11J205 W6/A11J203 W1/A11J401 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 277: A12 Pulse Modulator Board
8. Using the T–10 driver, remove the sheet metal from A12 Pulse Modulator Board. Replacement Procedure — Reverse the order of the removal procedure. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 278 Assembly Replacement A12 Pulse Modulator Board Figure 3-18 A12 Pulse Modulator Board E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 279: A13 I/Q Mux (E8267D Standard Or With Option 015) (Serial Prefixes
6. Lift the retention levers and disconnect the A13 I/Q MUX from the A31 Motherboard. 7. Lift the A13 I/Q MUX out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. (See the internal cover overlay for cable color codes.) E8257D/67D, E8663D PSG Signal Generators Service Guide...

Page 280 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-19 A13 I/Q MUX (E8267D Standard or with Option 015) (Serial Prefixes <US4722/MY4722) W56/A13J14 W63/A13J5 W62/A13J6 W57/A13J13 W49/A13J7 W58/A13J12 W59/A13J11 W61/A13J9 W50/A13J8 W60/A13J10 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 281: A13 I/Q Mux (E8267D Standard Or With Option H16/016) (Serial Prefixes ≥ Us4722/My4722)
— W57 from A13J13 — W56 from A13J14 — W123 from A13J15 — W124 from A13J16 — W127 from A13J17 — W128 from A13J18 — W125 from A13J19 — W126 from A13J20 — W129 from A13J21 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 282: Replacement Procedure
Figure 3-20 A13 I/Q MUX (E8267D Standard or with Option 016) (Serial Prefixes ≥ US4722/MY4722) W49/A13 W129/A13J21 W125/A13J19 W57/A13J13 W50/A13J8 W62/A13J6 W58/A13J12 W126/A13J20 W63/A13J5 W130/A13J22 W131/A13J9 W128/A13J18 W123/A13J15 W127/A13J17 W56/A13J14 W132/A13J10 W124/A13J16 W59/A13J11 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 283: A14 Baseband Generator (E8267D Only)
9. Lift the A14 Baseband Generator out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 284 Assembly Replacement A14 Baseband Generator (E8267D Only) Figure 3-21 A14 Baseband Generator W65/A14J800 W64/A14J13 W90/A14J21 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 285: A17 Baseband Generator Interface (E8267D Only)
9. Remove the A17 Baseband Generator Interface. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all hex screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 286 Assembly Replacement A17 Baseband Generator Interface (E8267D Only) Figure 3-22 A17 Rear Panel Interface Board W90/A17P1 W64/A17P2 W68/A17P4 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 287: A18 Cpu
7. Lift the A18 CPU out of the slot. Replacement Procedure 1. To Install the CPU, reverse the order of the removal procedure. 2. Perform the post–repair CPU Configuration process. 3. Perform theA18 CPU post–repair adjustments and performance tests. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 288 Assembly Replacement A18 CPU Figure 3-23 A18 CPU E8267D: W66/A18P2 E8267D: W64/A14J13 W19/A18J2 W18/A18J1 E8267D: W90/A14J21 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 289: A18Bt1
1. To install the battery, the positive side is aligned with the positive sign on the A18’s battery clip. 2. Reverse the remaining steps of the removal procedure. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 290 Assembly Replacement A18BT1 Figure 3-24 A18BT1 W18/A18J1 W19/A18J2 E8267D: W66/A18P2 E8267D: W90/A14J21 E8267D:W64/A14J13 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 291: A19 Power Supply
12.Move W20 to the side and remove the A19 Power Supply from the signal generator’s chassis. 13.Remove the screw that attaches the A34 Internal Hard Drive to the A19 Power Supply (For E8267D with serial prefixes <US4829/MY4829 only). E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 292: Replacement Procedure
A19 Power Supply Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 293 Assembly Replacement A19 Power Supply Figure 3-25 A19 Power Supply Removal A22W2 A22W1 W66/A18J2 W64/A14J13 W18/A18J1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 294: A20 Smi (Source Module Interface)
6. Remove the A20 SMI. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all hex screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 295 Assembly Replacement A20 SMI (Source Module Interface) Figure 3-26 A20 SMI E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 296: A21 Rear-Panel Interface
Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all hex–nuts to 9 in–lbs. 4. Torque all BNC nuts to 21 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 297 Assembly Replacement A21 Rear–Panel Interface 5. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-27 A21 Rear Panel Interface E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 298: A22 Line Module
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all nuts to 9 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 299 Assembly Replacement A22 Line Module Figure 3-28 A22 Line Module Removal E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 300: A23 Lowband Coupler/Detector
6. Using the 5/16” open–ended wrench, disconnect the following RF cable according to the signal generator you have. E8257D & E8663D: Disconnect the W37 RF cable from the A23 Lowband Coupler/Detector. E8267D: Disconnect the W75 RF cable from the A23 Lowband Coupler/Detector.
Page 301 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-29 A23 Lowband Coupler/Detector E8257D & E8663D – W37 E8267D – W75 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 302: A24 20 Ghz Highband Coupler (Options 503, 509, 513, 520, And 521)
4. Using the 5/16” open–ended wrench, disconnect the following assembly according to the signal generator you have. E8257D & E8663D: Disconnect the A25 20 GHz Highband Detector from the A24 20 GHz Highband Coupler. E8267D: Disconnect the A33 6dB PAD from the A24 20 GHz Highband Coupler.
Page 303: Replacement Procedure
3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-30 A24 20 GHz Highband Coupler (Options 503, 509, 513, and 520 – Standard) A25B E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 304 Assembly Replacement A24 20 GHz Highband Coupler (Options 503, 509, 513, 520, and 521) Figure 3-31 A24 20 GHz Highband Coupler (Options 503, 509, 513, and 520 – Option 1EM) A25B E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 305 A24 20 GHz Highband Coupler (Options 503, 509, 513, 520, and 521) Figure 3-32 A24 20 GHz Highband Coupler (Option 521 - Standard) A25B W144 W142 Figure 3-33 A24 20 GHz Highband Coupler (Option 521 - Option 1EM) W143 A25B W147 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 306 Assembly Replacement A24 20 GHz Highband Coupler (Options 503, 509, 513, 520, and 521) This page intentionally left blank. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 307: A24 40 Ghz Highband Coupler (Option 540)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 308 A24 40 GHz Highband Coupler (Option 540) Figure 3-34 A24 40 GHz Highband Coupler (Option 540 – Standard) A25BW1 Figure 3-35 A24 40 GHz Highband Coupler (Option 540 – Option 1EM) A25B A25BW1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 309: A24 50 Ghz Highband Coupler (Options 532 And 544)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 310 Figure 3-36 A24 50 GHz Highband Coupler (Options 532 & 544 – Standard) A25B W102 Figure 3-37 A24 50 GHz Highband Coupler (Options 532 & 544 – Option 1EM) W102 A25 & A33 A25B E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 311: A24 67 Ghz Highband Coupler (Options 550 And 567)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 312 A24 67 GHz Highband Coupler (Options 550 and 567) Figure 3-38 A24 67 GHz Highband Coupler (Options 550 & 567 – Standard) W112 A25B Figure 3-39 A24 67 GHz Highband Coupler (Options 550 & 567 and Option 1EM) A25B W112 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 313: A25 20 Ghz Highband Detector (Options 503, 509, 513, 520, & 521)
4. Using the 5/16” open–ended wrench, disconnect the A25 20 GHz Highband Detector according to the signal generator you have. E8257D & E8663D: Disconnect the A25 20 GHz Highband Detector from the A24 20 GHz Highband Coupler. E8267D: Disconnect the A25 20 GHz Highband Detector from the A33 6dB PAD.
Page 314 Assembly Replacement A25 20 GHz Highband Detector (Options 503, 509, 513, 520, & 521) Figure 3-40 A25 20 GHz Highband Detector (Options 503, 509, 513, and 520) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 315 Assembly Replacement A25 20 GHz Highband Detector (Options 503, 509, 513, 520, & 521) Figure 3-41 A25 20 GHz Highband Detector (Option 521) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 316: A25 40 Ghz Highband Detector (Option 540)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 317 Assembly Replacement A25 40 GHz Highband Detector (Option 540) Figure 3-42 A25 40 GHz Highband Detector (Option 540) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 318: A25 50 Ghz Highband Detector (Options 532 And 544)
Highband Detector. 6. Remove the A25 50 GHz Highband Detector. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 319 Assembly Replacement A25 50 GHz Highband Detector (Options 532 and 544) Figure 3-43 A25 50 GHz Highband Detector (Options 532 and 544) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 320: A25 67 Ghz Highband Detector (Options 550 And 567)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 321 Assembly Replacement A25 67 GHz Highband Detector (Options 550 and 567) Figure 3-44 A25 67 GHz Highband Detector (Options 550 and 567) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 322: A25B Highband Detector Bias Board
6. Remove the A25B Highband Detector Bias Board. Replacement Procedure — Reverse the order of the removal procedure. — Torque all T–10 screws to 9 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 323 Assembly Replacement A25B Highband Detector Bias Board Figure 3-45 A25B Highband Detector Bias Board A25B A25BW1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 324: A26 Mid (Microcircuit Interface Deck)
— W34 from A26J31 — W35 from A26J10 — W20 from A26J20 — W113 from A26J34 (E8257D & E8663D only) — W70 from A26J34 (E8267D only) — W99 from the A26J35 (Option 532 and 544 only) — W116 from the A26J36 (Option 532 and 544 only) 6.
Page 325: Replacement Procedure
2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-46 A26 MID (E8257D & E8663D) W113/A26J34 W20/A26J20 W28A26J15 W36/A26J13 W19/A26J30 W69/A26J14 W35/A26J10 W34/A26J31 W33/A26J32 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 326 Assembly Replacement A26 MID (Microcircuit Interface Deck) Figure 3-47 A26 MID (E8267D) W28/A26J15 W99/A26J35 (Options 532 & 544) W20/A26J20 W36/A26J13 W69/A26J14 W19/A26J30 W35/A26J10 W70/A26J34 W116/A26J36 W33/A26J32 W34/A26J31 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 327: A27 40 Ghz Doubler (Option 540)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 328 Assembly Replacement A27 40 GHz Doubler (Option 540) Figure 3-48 A27 40 GHz Doubler (Option 540) Standard – W30 Option 1EM – W83 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 329: A27 40 Ghz Doubler (Options 532 And 544 Only)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 330 Assembly Replacement A27 40 GHz Doubler (Options 532 and 544 only) Figure 3-49 A27 40 GHz Doubler (Options 532 and 544) W104/A27J1 W100/A27J2 W116/A27J10 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 331: A28 Yig Oscillator
4. Using the 5/16” open–ended wrench, disconnect the following RF cable according to the signal generator you have: E8257D & E8663D: Disconnect the W41 RF cable from the A28J1. E8267D: Disconnect the W101 RMF cable from the A28J1. 5. Disconnect the W12 ribbon cable from the A28 YIG Oscillator’s driver board.
Page 332 Assembly Replacement A28 YIG Oscillator Figure 3-50 A28 YIG Oscillator E8257D & E8663D – W38 E8267D – W101 (not shown) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 333: A29 20 Ghz Doubler
5. Using the 5/16” open–ended wrench, disconnect the following RF cable according to the signal generator you have. E8257D & E8663D: Disconnect the W41 RF cable from A29J2 and the W38 RF cable from A29J1. E8267D: Disconnect the W77 RF cable from A29J2 and the W115 RF cable from A29J1.
Page 334 Assembly Replacement A29 20 GHz Doubler Figure 3-51 A29 20 GHz Doubler E8257D & E8663D – W41/A29J2 W33/A29J10 E8267D – W77/A29J2 W39/A29J4 E8257D & E8663D – W38/A29J1 E8267D – W115/A29J1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 335: A30 Modulation Filter (Standard And Option 1Ea/1Eu)
5. Using the 5/16” open–ended wrench, disconnect the following RF cable according to the signal generator you have. E8257D/E8663D: Disconnect the W41 RF cable from A30J1. E8267D: Disconnect the W98 RF cable from A30J1. 6. Disconnect the W34 ribbon cable from the A30 Modulator Filter.
Page 336: Replacement Procedure
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 337 W34/A30J10 W32 (Options 503/509/513/520/532/540) W27/A30J3 W106 (Option 550/567) E8257D & E8663D – W74 (Options 503/509/513/520/521), W31 (Option 540), W107 (Option 550/567), W71 (Option 1EM) E8267D – W74 (Option 513/520), W103/A30J2, W71 (Option 1EM) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 338: A31 Motherboard (E8257D & E8663D)
7. Using the needle–nose pliers, disconnect the following flexible cables: — W21 from A31J1043 — W10 from A31J1031 — W11 from A31J1021 — W54 from A31J1032 — W47 from A31J1041 — W22 from A31J1042 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 339: Replacement Procedure
2. Send command: DIAG:FILE:BACK, this copies data to the Motherboard. 3. Torque all T–10 screws to 9 in–lbs. 4. Torque all RF connectors to 8 in–lbs. 5. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 340 Assembly Replacement A31 Motherboard (E8257D & E8663D) Figure 3-53 A31 Motherboard (E8257D & E8663D) W135/A31P242 W23/A31P241 (Option 521 only) W35/A31P201 W40/A29J3 W137 W39/A29J4 W21/A31J1043 W22/A31J1042 W47/A31J1041 W11/A31J1021 W10/A31J1031 W138 W54/A31J1032 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 341: A31 Motherboard (E8267D)
7. Using the needle–nose pliers, disconnect the following flexible cables: — W21 from A31J1043 — W10 from A31J1031 — W54 from A31J1032 — W47 from A31J1041 — W22 from A31J1042 — W60 from A31J1052 — W61 from A31J1053 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 342: Replacement Procedure
2. Send command "DIAG:FILE:BACK", this copies data to the Motherboard. 3. Torque all T–10 screws to 9 in–lbs. 4. Torque all RF connectors to 8 in–lbs. 5. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 343 Assembly Replacement A31 Motherboard (E8267D) Figure 3-54 A31 Motherboard (E8267D) W68/A31J250 W52/A31J501 W51/A31J500 W53/A31J502 W21/A31J1043 W22/A31J1042 W47/A31J1041 W61/A31J1053 W60/A31J1052 W10/A31J1031 W54/A31J1032 W11/A31J1021 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 344: A32 10 Mhz Crystal Oscillator
8. Remove the A32 10 MHz Crystal Oscillator. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 345 Assembly Replacement A32 10 MHz Crystal Oscillator Figure 3-55 A32 Crystal Oscillator (Option UNR/UNX only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 346: A33 6Db Pad (Options 503, 509, 513, 520, And 521)
5. Remove the A33 6 dB PAD. Replacement Procedure — Reverse the order of the removal procedure. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 347 Assembly Replacement A33 6dB PAD (Options 503, 509, 513, 520, and 521) Figure 3-56 A33 6dB PAD (Options 503, 509, 513, 520, and 521) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 348: A33 10Db Pad (Options 532 And 544)
5. Remove the A33 10dB PAD. Replacement Procedure — Reverse the order of the removal procedure. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 349 Assembly Replacement A33 10dB PAD (Options 532 and 544) Figure 3-57 A33 10dB PAD (Options 532 and 544) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 350: Rear Panel (Standard)
— W57 (– I OUT) from A13 I/Q MUX J13 (E8267D only) — W58 (Q OUT) from A13 I/Q MUX J12 (E8267D only) — W59 (I OUT) from A13 I/Q MUX J11 (E8267D only) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 351: Replacement Procedure
— Reverse the order of the removal procedure. — Torque all T–10 screws to 9 in–lbs. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 352 Assembly Replacement Rear Panel (Standard) Figure 3-58 Rear Panel Removal (under chain) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 353: Rear Panel (Option 1Em)
7. Position the signal generator with the rear panel facing you. 8. Using the needle–nose pliers, disconnect the following flexible cables: — W55 (SOURCE MOD INTERFACE) from A10 ALC J304. — W4 (ALC INPUT) from the A10 ALC J4 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 354 11.If the signal generator has option UNR/UNX, disconnect the W48 flexible cable from A32 10 MHz Crystal Oscillator (Option UNR/UNX). 12.Using the T–10 driver, remove the two screws (1) that secure the Rear Panel to the left and right struts. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 355: Replacement Procedure
— Reverse the order of the removal procedure. — Torque all T–10 screws to 9 in–lbs. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 356 Assembly Replacement Rear Panel (Option 1EM) Figure 3-59 Rear Panel Removal (Option 1EM) A22W2 A22W1 W64/A14J13 W18/A18J1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 357: A34 Internal Hard Drive (E8267D Only - Discontinued)
5. Remove the A34 Internal Hard Drive. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 358 Assembly Replacement A34 Internal Hard Drive (E8267D Only - Discontinued) Figure 3-60 A34 Internal Hard Drive W66/A18P2 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 359: A35 3-20 Ghz I/Q Modulator (E8267D Only - Standard Or With Option 015)
7. Disconnect the W70 ribbon cable from the A35 I/Q MOD. 8. Remove the A35 I/Q MOD from the RF deck. Replacement Procedure — Reverse the order of the removal procedure. (See the internal cover overlay for cable color codes.) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 360 — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-61 A35 3–20 GHz I/Q MOD W80/A35J106 W79/A35J9 W62/A35J7 W63/A35J6 W105/A35J4 W97/A35J8 W77/A35J1 W104/A35J3 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 361: A35 3-20 Ghz I/Q Modulator (E8267D Only - Standard Or With Option H16/016) (Serial Prefixes ≥ Us4722/My4722)
8. Remove the A35 I/Q MOD from the RF deck. Replacement Procedure — Reverse the order of the removal procedure. (See the internal cover overlay for cable color codes.) — Torque all T–10 screws to 9 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 362 — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. Figure 3-62 A35 3–20 GHz I/Q MOD (E8267D only - Standard or with Option 016) (Serial Prefixes ≥ US4722/MY4722) W129/A35J108 W130/A35J106 W63/A35J6 W62/A35J7 W128/A35J107 W127/A35J109 W134 W77/A35J1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 363: A36 Quadraplier (Options 550 And 567)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 364 Assembly Replacement A36 Quadraplier (Options 550 and 567) Figure 3-63 A36 Quadraplier W112/RF OUT W109/A36J3 W110/A36J6 W108/A36J4 W96/A36J5 W111/A36J7 W106/A36J1 W107/A36J2 W113/A36J10 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 365: A37 Upconverter (E8267D Only)
— Reverse the order of the removal procedure. — Torque all T–10 screws to 9 in–lbs. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 366 Assembly Replacement A37 Upconverter (E8267D Only) Figure 3-64 A37 Upconverter W102/A37J4 W114/A37J9 W98/A37J2 W103/A37J3 W97/A37J8 W100/A37J5 W78/A37J1 W99/A37J7 (backside) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 367: A38 Lowband Switch Filter
5. Lift the board assembly out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 368 Assembly Replacement A38 Lowband Switch Filter Figure 3-65 A38 Low Band Switch Filter E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 369: A39 Directional Sweep Coupler
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 370 Assembly Replacement A39 Directional Sweep Coupler Figure 3-66 A39 Directional Sweep Coupler W115 W101 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 371: A40 Compact Flash Drive Assembly
A40 PCA/CF drive assembly to the rear panel. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 372 Assembly Replacement A40 Compact Flash Drive Assembly Figure 3-67 A40 Flash Drive Assembly W66/A18P2 Figure 3-68 A41 Flash Drive Door Assembly Door Latch Screw E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 373: A41 Flash Drive Door Assembly
Note: The screws act as retainers to keep the hinge pins from sliding out. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 374 Assembly Replacement A41 Flash Drive Door Assembly Figure 3-69 A41 Flash Drive Door Assembly Door Latch Screw E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 375: A42 20 Ghz Power Amp (Option 521)
7. Remove the A42 20 GHz Power Amp from the RF deck. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 376 Assembly Replacement A42 20 GHz Power Amp (Option 521) Figure 3-70 A42 20 GHz Power Amp W135/A42J9 Std: W142/A42 RF OUT 1EM: W143/A42 RF OUT W141/A42 RF IN E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 377: A43 Lowband Amp Filter
7. Lift the A43 Lowband Amp Filter board out of the slot. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 378 Assembly Replacement A43 Lowband Amp Filter Figure 3-71 A43 Lowband Amp Filter W139 W140 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 379: A44 Scan Modulation Bias Adapter (E8257D-520 And E8663D Only)
Assembly Replacement A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only) A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only) Tools Required — needle-nose pliers — 5/16” open–ended wrench — T-10 driver Removal Procedure Refer to Figure 3-72 for this procedure.
Page 380 Assembly Replacement A44 Scan Modulation Bias Adapter (E8257D-520 and E8663D Only) Figure 3-72 A44 Scan Modulation Bias Adapter A44 (Scan Modulation A44J1 Bias adapter) A44J5 A44J3 A44J2 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 381: At1 90 Db Attenuator
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 382 Assembly Replacement AT1 90 dB Attenuator Figure 3-73 AT1 90 dB Attenuator W117 AT1W1 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 383: At1 115 Db Attenuator
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 384 Assembly Replacement AT1 115 dB Attenuator Figure 3-74 AT1 115 dB Attenuator AT1W1/A26J13 Option 521: W143 Option 521: W145 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 385: At1 90 Db Attenuator (Option 1Em)
1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. 4. Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 386 Assembly Replacement AT1 90 dB Attenuator (Option 1EM) Figure 3-75 AT1 90 dB Attenuator (Options 1EM) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 387: At1 115 Db Attenuator (Option 1Em)
8. Using the T–10 driver, remove the sheet metal from the attenuator. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Torque all T–10 screws to 9 in–lbs. 3. Torque all RF connectors to 8 in–lbs. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 388 Figure 3-76 AT1 115dB Attenuator (Option 1EM) Option 521 – W147 Option 521 – W46 Options 503/509/513/520/540 – W72 Options 503/509/513/520/540 – W73 Options 532/544 – W93 Options 532/544 – W85 E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 389: B1 Fan
— Reverse the order of the removal procedure. — Torque all T–10 screws to 9 in–lbs. — Torque all RF connectors to 8 in–lbs. — Perform the post–repair adjustments and performance tests that pertain to this removal procedure. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 390 Assembly Replacement B1 Fan Figure 3-77 B1 Fan E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 391: Post-Repair Procedures
Keysight PSG Signal Generators E8257D/67D, E8663D Service Guide Post–Repair Procedures — “Post Repair Adjustments: Assemblies A1—A12 (For Prefixes < xx4928)” on page 402 — “Post Repair Adjustments: Assemblies A13—A26 (For Prefixes < xx4928)” on page 403 — “Post Repair Adjustments: Assemblies A27—A40, AT1, B1, and RF Output Connector (For Prefixes <...
Page 392: Post-Repair Procedures Matrix
ALC Modulator Calibration High Band ALC Modulator Calibration Low Band ALC Modulator Calibration ALC Mod Bias DAC Sensitivity Calibration AM Gain Calibration IQ Impairment Calibration Power Clamp Pulse Width Calibration 9V PTAT Abus Calibration E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 393 FM Path Offset Calibration FM In–band Offset Calibration FM 1/2 Path Ratio Gain Calibration Mod Source Relative Gain Calibration FM/PM YO Frequency Compensation Calibration DC FM Calibration External Input Peak Detector Calibration I/Q Modulation Calibration E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 394 ADC Calibration YIG–Driver Pre–Tune Calibration VCO Bias Frac–N Calibration Internal Source Cal (E8257D/E8663D with Option UNT) AM Audio Path Offset Cal (E8257D/E8663D with Option UNT) KV vs. Frequency Calibration E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 395 FM Path Offset Calibration (E8257D/E8663D with Option UNT) FM In-band Offset Calibration (E8257D/E8663D with Option UNT) FM Inverting Amplifier Offset Calibration (E8257D/E8663D with Option UNT) FM 1/2 Path Ratio Gain Calibration (E8257D/E8663D with Option UNT) Mod Source Relative Gain Calibration FM/PM Out–of–Band Calibration...
Page 396 V-Band ALC Modulator Calibration (E8257D with Option 567 Only) Ramp Sweep Calibration (E8257D/E8663D with 007 and E8257N Only) Pulse Width calibration (E8257D with Option UNU, UNW, UNS, or HNS, and E8663D/E8257N Only) Low Band Digital Prelevel Calibration VBLO Mixer Bias Calibration...
Page 397 FM Path Offset Calibration (E8257D/E8663D with Option UNT) FM In-band Offset Calibration (E8257D/E8663D with Option UNT) FM In- band DCFM Calibration (E8257D, E8267D, and E8663D Option UNT and UNY Only) FM Out-of-Band YO Calibration (E8257D, E8267D, and E8663D Option UNT and UNY Only)
Page 398 DC FM Calibration (E8257D/E8663D with Option UNT) External Input Peak Detector Calibration (E8257D/E8663D with Option UNT) Quadraplier Download (E8257D with Option 550 or 567 or E8257N with Option 550 Only) High Band ALC Linearity Calibration High Band Power Flatness Calibration...
Page 399 External Pulse Modulation ON/OFF Ratio Harmonic Spurious Sub–Harmonic Spurious Non–Harmonic Spurious Single–Sideband Phase Noise EVM and IQ Offset External Digital Modulation Level Accuracy Relative to CW Swept Frequency Accuracy Functional Check (Service Software − Utility) Dual Arb E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 400 Self Tests Maximum Leveled Output Power Power Level Accuracy Internal Pulse Modulation Level Accuracy Internal Pulse Modulation Rise/Fall Time External Pulse Modulation ON/OFF Ratio Harmonic Spurious E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 401 Maximum Leveled Output Power - Wide IQ/FM Mode (E8267D Option H18 Only) Power Level Accuracy Internal Pulse Modulation Level Accuracy (E8257D/E8267D Option UNU, UNW, UNS, or HNS, and E8663D Only) Internal Pulse Modulation Rise/Fall Time (E8257D/E8267D Option UNW, UNS, or HNS,...
Page 402 External Phase Modulation Frequency Response (E8257D/E8267D/E8663D Option UNT without UNY) External Pulse Modulation On/Off Ratio (E8257D/E8267D Option UNU with serial prefix < 4928, UNW, UNS, or HNS, E8663D Option UNW) Single-Sideband Phase Noise (Option UNX or UNY test procedure) Single-Sideband Phase Noise (Non-Option UNX or...
Page 403 Single-Sideband Phase Noise (Option UNX or UNY test procedure) Single-Sideband Phase Noise (Non-Option UNX or UNY test procedure) Residual Phase Noise (E8257D/E8267D/E8663D Option UNX or UNY and without H5Y Only) (Manual Performance Test) E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 404 Internal Pulse Modulation Level Accuracy (E8257D/E8267D Option UNU, UNW, UNS, or HNS, and E8663D Only) Internal Pulse Modulation Rise/Fall Time (E8257D/E8267D Option UNW, UNS, or HNS, E8663D Option UNW) DC FM Carrier Offset (E8257D/E8267D/E8663D Option UNT) Harmonic Spurious Sub–Harmonic Spurious Non–Harmonic Spurious...
Page 405: Cpu Configuration
:SYST:IDN "Keysight Technologies, <Model Number>, <Serial Number>, <Firmware Revision>" When executing the command, ensure that the firmware revision parameter matches the signal generator model. For example, E8257D and E8267D use firmware revisions that start with C.04.xx. 5. Download the new firmware: a.
Page 406 GSDC website: a. Access the GSDC website: http://pamirs.cos.keysight.com/license/ Their website provides a guest login for searching the data base. b. Use the guest login and search their data base. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 407 After entering all the required license keys, press Proceed With Reconfiguration. If a license key does not turn an option on, proceed to Step 11 perform the step as if the license keys had not been retrievable from the CPU. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 408 Post–Repair Procedures CPU Configuration E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 409: Safety And Regulatory
Keysight PSG Signal Generators E8257D/67D, E8663D Service Guide Safety and Regulatory This chapter provides information on the following: — “General Safety Considerations” on page 420 — “Lithium Battery Disposal” on page 421 — “Assistance” on page 421 — “Certification” on page 421 The following safety notes are used throughout this manual.
Page 410: General Safety Considerations
Many of the assemblies in this instrument are very susceptible to damage from electrostatic discharge (ESD). Perform service procedures only at a static-safe workstation and wear a grounding strap. E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 411: Lithium Battery Disposal
When the battery on the A14 CPU is exhausted and/or ready for disposal, dispose of it according to your country’s requirements. You can return the battery to your nearest Keysight Technologies Sales and Service office for disposal, if required. Figure 5-1...
Page 412 Safety and Regulatory Certification E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 413 A29 20 GHz Doubler, A18 CPU description , 149, description A18BT1 Battery , 152, self-test , 67, A30 Modulation Filter, A19 Power Supply A7 Reference description A20 SMI (Source Module description Interface) self-test E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 414 , 393, description lowband, replacement front panel AT1 90 dB Attenuator , 391, replacement B1 Fan configuration subassemblies replacement front panel data backup display instrument cover, inner replacement inverter instrument cover, outer troubleshooting preparation E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 415 , 377, 387, replaceable parts motherboard LED locations assemblies E8257D hardware E8267D ordering information microcircuit interface deck troubleshooting RF path (MID), replacement power supply, description mixing products replacement E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 416 RF path block diagram unlevels, troubleshooting E8257D , 167, unlocks, troubleshooting E8267D , 175, 177, upconverter, replacement RF path, description SMI, replacement E8257D/67D, E8663D PSG Signal Generators Service Guide...
Page 417 This information is subject to change without notice. © Keysight Technologies 2004-2017 Edition 1, July 2017 E8251-90359 www.keysight.com...

This manual is also suitable for:

E8663d E8267d

Keysight Technologies E8257D Service Manual

Troubleshooting

Contents

Troubleshooting Unlevels

Troubleshooting Adjustment Problems

Troubleshooting ADC Adjustment Failures

Troubleshooting Performance Test Problems

Troubleshooting the RF Path

Troubleshooting Harmonic Spurious

Troubleshooting Non-Harmonic Spurious

Troubleshooting Option UNR/UNX/UNY and Instruments with Serial Prefixes ≥ US4805/MY4805 Phase Noise

Overall Description

Overallpsg Vector Signal Generator

Overallpsg Analog Signal Generator

Reference/Synthesis Loop Description

Reference/Synthesis Loop

RF Path Description (Frequency Generation, Level Control, and Modulation)

Replaceable Parts

Contents

Assembly Replacement

Contents

A18Bt1

A19 Power Supply

A20 SMI (Source Module Interface)

A21 Rear-Panel Interface

A22 Line Module

A23 Lowband Coupler/Detector

A24 20 Ghz Highband Coupler (Options 503, 509, 513, 520, and 521)

A24 40 Ghz Highband Coupler (Option 540)

A24 50 Ghz Highband Coupler (Options 532 and 544)

A24 67 Ghz Highband Coupler (Options 550 and 567)

A25 20 Ghz Highband Detector (Options 503, 509, 513, 520, & 521)

A25 40 Ghz Highband Detector (Option 540)

Quick Links

Troubleshooting

Related Manuals for Keysight Technologies E8257D

Summary of Contents for Keysight Technologies E8257D