Keysight N5171B EXG Service Manual
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Keysight N5171B EXG Service Manual

X-series signal generators
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Keysight X-Series
Signal Generators
This manual provides documentation for the following models:
N5171B/72B/73B EXG
N5181B/82B/83B MXG
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

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Summary of Contents for Keysight N5171B EXG

  • Page 1 Signal Generators This manual provides documentation for the following models: N5171B/72B/73B EXG N5181B/82B/83B MXG 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: Safety Notices

    PERFORMANCE OF THIS to the public to use, modify, DOCUMENT OR ANY INFORMATION reproduce, release, perform, CONTAINED HEREIN. SHOULD display, or disclose commercial KEYSIGHT AND THE USER HAVE A computer software or SEPARATE WRITTEN AGREEMENT commercial computer software WITH WARRANTY TERMS...
  • Page 3 URLs, according to the name of your product: http://www.keysight.com/find/mxg To receive the latest updates by email, subscribe to Keysight Email Updates at the following URL: http://www.keysight.com/find/MyKeysight Information on preventing instrument damage can be found at: www.keysight.com/find/PreventingInstrumentRepair...

  • Page 5: Table Of Contents

    Contacting Keysight Technologies ........
  • Page 6 Manual Performance Test Problems .........107 Keysight X-Series Signal Generators Service Guide...
  • Page 7 Order Parts Fast ............111 Shipping a Defective Assembly Back to Keysight Technologies ..... . 112 Frequency and Hardware Options .
  • Page 8 Removal Procedure ............206 viii Keysight X-Series Signal Generators Service Guide...
  • Page 9 Replacement Procedure ..........232 Keysight X-Series Signal Generators Service Guide...
  • Page 10 May 1, 2015 ............265 Keysight X-Series Signal Generators Service Guide...
  • Page 11 Documentation Overview • Safety Information Installation Guide • Receiving the Instrument • Environmental & Electrical Requirements • Basic Setup • Accessories • Operation Verification • Regulatory Information • Signal Generator Overview User’s Guide • Setting Preferences & Enabling Options • Basic Operation •...

  • Page 12: Overall Block Diagram For N5171B/72B

    • Getting Started with Remote Operation Programming Guide • Using IO Interfaces • Programming Examples • Programming the Status Register System • Creating and Downloading Files • Creating and Downloading User-Data Files • SCPI Basics SCPI Reference • Basic Function Commands •...

  • Page 13: Troubleshooting

    Keysight X-Series Signal Generators N5171B/72B/73B EXG, N5181B/82B/83B MXG Service Guide Troubleshooting Before Troubleshooting These troubleshooting instructions are for use by qualified personnel. 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. Disconnect the instrument from all voltage sources before it is opened.

  • Page 14: Esd Information

    The risk of ESD damage can be greatly reduced by close attention to how all components are handled. — Keep static-generating materials at least one meter away from all components. — Store or transport components in static-shielding containers. Keysight X-Series Signal Generators Service Guide...

  • Page 15: Contacting Keysight Technologies

    If you do not have access to the internet, contact your local field engineer. In any correspondence or telephone conversation, refer to the signal generator by its model number and full serial number. With this information the Keysight representative can determine whether your signal generator is still within its warranty period.

  • Page 16: Returning A Signal Generator For Service

    3. Seal the shipping container securely with strong, nylon adhesive tape. 4. Mark the shipping container “FRAGILE, HANDLE WITH CARE” to ensure careful handling. 5. Retain copies of all shipping papers. Keysight X-Series Signal Generators Service Guide...
  • Page 17 Keysight EXG-B RF Analog/Vector + Real Time Signal Flow Diagram Yellow Blocks – A3 RF Assembly Reference Synthesizer Frac-N Phase 0.75 to 1.5 GHz Flexible Reference Frequency 0.75 to 1.5 1-50 MHz Detector N.f 2  100MHz 100 MHz 50 MHz ...

  • Page 18: Block Diagram For N5183B

    Yellow Blocks – A3 RF Assembly Synthesizer Loop Filter, Bandwidth Phase 62.5 to Selection & Gain 1-2 GHz VCO Mode A/B FM Frequency Keysight MXG-B RF Analog/Vector 125 MHz Compensation Detector Reference  16  50 MHz 50 MHz 2...
  • Page 19 Keysight EXG-B UW Analog – A3 RF Section Reference 50 MHz 2 100MHz Synthesizer Frac-N VCXO  Flexible Reference FPGA Phase 0.75 to 1.5 GHz 1-50 MHz Frequency 0.75 to Detector 2 N.f 1.5 GHz 1.0 GHz  REF IN R (1-50)

  • Page 20: Block Diagram For Micro Deck

    Synthesizer Keysight MXG-B UW Analog – Loop Filter, Bandwidth Phase 62.5 to 1-2 GHz VCO Mode A/B FM Selection & Gain Frequency 125 MHz Compensation Detector A3 RF Section Reference  16  50 MHz 50 MHz 2 1 to 0.75-1.5 GHz...
  • Page 21 Keysight MXG-B/EXG-B UW Analog – A7 Microdeck 40 GHz Doubler Microcircuit 20 GHz Frequency Multiplier 2-20/40 GHz Coupler 20-40 Detector 40 GHz Attenuator 5-8 GHz Biased 20-26 2.5 – 5.0 GHz from 2.5-5.0 10-20 GHz to doubler J2004 - 5-6.4...

  • Page 22: Overall Block Description

    Overall Block Description The objective of the overall block diagram is to provide a functional overview of the Keysight N5171B/72B/73B EXG-B and N5181B/82B/83B MXG-B X-Series signal generators. The major functional circuitry shown in the block diagram is described in this section. Familiarize yourself with this information before you start troubleshooting.

  • Page 23: A2 Vector Module (N5172B/82B Only)

    — A 500 MHz signal to the synthesizer PLL (only MXG-B) — A 100 MHz clock signal to the A2 Vector Module. — A 1 GHz LO signal to the heterodyne (HET) band mixer. Keysight X-Series Signal Generators Service Guide...
  • Page 24 The reference voltage is generated using calibrated DACs. When the reference and detected levels are not the same, the ALC integrator output ramps up or down to increase Keysight X-Series Signal Generators Service Guide...

  • Page 25: A3 Rf Assembly (N5173B/83B Only)

    (The attenuator on the A7 Micro Deck impacts signal performance from 9 kHz to ≤ 3.2 GHz. The high band coupler on the A7 Micro Deck impacts performance from < 2 GHz to ≤ 3.2 GHz.) Keysight X-Series Signal Generators Service Guide...
  • Page 26 The A3 RF assembly contains the ALC modulator diode for frequencies ≤ 3.2 GHz. ALC operation is similar to that in the N5171B/72B/81B/82B except that the ALC control circuitry and coupler detector are located on the A7 Micro Deck. Keysight X-Series Signal Generators Service Guide...

  • Page 27: A4 40Gb Solid State Drive (Ssd) (N5172B/82B Only)

    Auxiliary Interface (25 Pin SCSI II) into machine level instructions and communicates these instructions on the internal buses. The A5 CPU also monitors critical circuits for unleveled and unlocked conditions, and reports these problems on the LCD Display. Keysight X-Series Signal Generators Service Guide...

  • Page 28: A6 Front Panel Interface Scan Assembly

    — a 100 kHz to 2 GHz low band coupler/detector — a > 2 GHz to 20 GHz coupler/detector (Option 520) or a > 2 GHz to 44 GHz coupler/detector (Option 532/540) — a 115 dB mechanical attenuator Keysight X-Series Signal Generators Service Guide...
  • Page 29 ALC Off mode and power search mode is that when power search is first executed, pulse modulation is turned off, and the ALC loop is closed and leveled. The ALC loop Keysight X-Series Signal Generators Service Guide...

  • Page 30: A8 Floating Bnc Bypass (N5173B/83B)

    The A8 Floating BNC Bypass isolation circuit is a filter that minimizes interference caused when external equipment is connected to the external ALC Input BNC. The circuit isolates DC voltage and high frequency signal components that might be present between different grounding paths. Keysight X-Series Signal Generators Service Guide...

  • Page 31: Common Circuitry

    Emitting Diode (LED) back-light system, polarized glare compensation, Thin-Film Transistor (TFT) timing controller, source and gate drivers. Internal DC-to-DC boost circuits generate gate and source driver voltages. The display is operated with a 3.3 VDC source. Keysight X-Series Signal Generators Service Guide...

  • Page 32: Getting Started With Troubleshooting

    If this rare and unlikely symptom occurs it’s a potentially hazardous condition. Do not try to repair, instead, return the signal generator to Keysight Technologies for service. For the instrument to meet performance specifications and for accurate self-test results, allow a warm up period of 45 minutes within an operational temperature range of 0 to 55 °C.
  • Page 33 Troubleshooting the 6 GHz Electronic Attenuator page 102 Troubleshooting Harmonic Spurious page 104 Troubleshooting Non-Harmonic Spurious page 106 Troubleshooting Warranted Performance Test Problems page 107 Manual Performance Test Problems page 107 Automated Performance Test Problems page 109 Keysight X-Series Signal Generators Service Guide...

  • Page 34: Self Test Overview

    A3 the third assembly. A1 output is the input for A2, and A2 output is the input for A3. If A1 output is defective, A2 and A3 outputs are also defective. If A2 output is defective, A3 output is defective. Keysight X-Series Signal Generators Service Guide...
  • Page 35 — Select/Deselect All — Run Highlighted Tests — Run Selected Tests — Loop Selected — View Details - When View Details is selected, the measured value, lower, and upper limits are displayed for the highlighted test. Keysight X-Series Signal Generators Service Guide...

  • Page 36: Running Self Test

    3. Press Utility > Instrument Info > Sel f Test > Run Complete Sel f Test. An activity bar displays on the screen indicating the test progress. When self test completes, one of the following messages displays: Keysight X-Series Signal Generators Service Guide...
  • Page 37 Removal and Installation Procedure” on page 164 must be performed. If the “Assembly Removal and Installation Procedure” is not performed the instrument hardware may not function properly (e.g. instrument errors and possibly self-test failures). Keysight X-Series Signal Generators Service Guide...
  • Page 38 “A1 Power Supply Troubleshooting” on page 45 702 to 708 (except 704) Replace the A2 Vector Module Go to “Troubleshooting Self Test 704” on page 33 800 BB Analog Baseband Self Tests 801 - 804 Replace the A2 Vector Module Keysight X-Series Signal Generators Service Guide...
  • Page 39 1301 - 1304 Replace the A7 Micro Deck 1400 MW Doubler Self Tests 1401 & 1402 Replace the A7 Micro Deck 1500 RT Board Self Tests 1501 - 1512 Replace the A7 Real-Time BBG Keysight X-Series Signal Generators Service Guide...

  • Page 40: Troubleshooting Self Test 102

    If the cable is considered faulty, REPLACE the cable. 4. Connect the output from the blind female MCX connector J5000 through a 10 dB attenuator (PAD) to a spectrum analyzer. Figure 1-1 W6 - J5000 Keysight X-Series Signal Generators Service Guide...

  • Page 41: Troubleshooting Self Test 901 To 905

    6. Connect the output from connector J2004 through a 10 dB attenuator (PAD) to a spectrum analyzer. 7. Setup the spectrum analyzer: a. Set the reference level to -30 dBm. b. Set the CW frequency to 1GHz. c. Set the Span to 100 MHz. Keysight X-Series Signal Generators Service Guide...

  • Page 42: Troubleshooting Self Test 1105

    6. Set up the spectrum analyzer: a. Press Preset. b. Set the reference level to +30 dBm. c. Set the CW frequency to 100 MHz. d. Set the span to 100 MHz. Keysight X-Series Signal Generators Service Guide...

  • Page 43: Self Tests Do Not Run Or Self Tests Run Slowly

    Supply or A5 CPU assembly. The A5 CPU assembly relies on correct power supply voltages. If the A1 Power Supply is faulty, it could cause a false A5 CPU assembly error. 1. Troubleshoot the A1 Power Supply. Refer to “A1 Power Supply Troubleshooting” on page Keysight X-Series Signal Generators Service Guide...
  • Page 44 Troubleshooting” on page 3. If self tests still will not run or run slowly, the fault may be identified within the boot-up routine. Use the following “Boot-up Routine” procedure to identify and isolate the problem. Keysight X-Series Signal Generators Service Guide...

  • Page 45: Boot-Up Routine

    6. Turn the signal generator on. 7. Visually inspect the fans individually to verify that the fans are turning. 8. Turn power off. 9. Position the signal generator with the bottom facing up. Keysight X-Series Signal Generators Service Guide...
  • Page 46 Figure 1-2 Status LEDs 11.Using Figure 1-2 locate the following FPGA LEDs (off): — DS1 PCIe Ref Clock — DS18 FRAC-N FPGA — DS25 Bridge FPGA — DS300 Analog FPGA — DS5000 REF FPGA Keysight X-Series Signal Generators Service Guide...
  • Page 47 Debug LEDs' routine ALL the LEDs will remain lit. The complete boot-up routine can vary but typically completes in less than 60 seconds. 15.Turn the signal generator on. 16.Verify that the yellow Debug LEDs complete the startup routine. Keysight X-Series Signal Generators Service Guide...
  • Page 48 Figure 1-4 Lower Level Communication LEDs *LED DS7 functionality resembles the continuous pulsing or a heartbeat. This LED is a visual indication of the ongoing communication between the A5 CPU and the A3 RF assembly. Keysight X-Series Signal Generators Service Guide...
  • Page 49 +3.3VDF — DS312 +5VDF — DS313 +5.1VDF *Standby Power LED — DS314 +12VDF *LED DS313 is always on when the signal generator is plugged in. Figure 1-5 Analog and Digital Power Supply Voltage LEDs Keysight X-Series Signal Generators Service Guide...
  • Page 50 FPGAs Unlock LEDs are on, replace the A3 RF assembly. — If all FPGA LEDs turn off, then the A5 CPU is likely the faulty assembly. Go to “A5 CPU Assembly Troubleshooting” on page 51 confirm that the A5 CPU is at fault. Keysight X-Series Signal Generators Service Guide...
  • Page 51 A3 RF assembly is at fault. 22.After all boot- up routine errors have been successfully fixed, run a complete self-test again. Press: Utility > Instrument Info > Sel f-Test > Run Complete Sel f-Test. Keysight X-Series Signal Generators Service Guide...

  • Page 52: Troubleshooting Assembly Level Problems

    If all A3J10 voltages are 0 volts, the most likely cause is the internal power line fuse in the A1 Power Supply. The internal power line fuse is NOT replaceable. The complete A1 Power Supply must be replaced. Keysight X-Series Signal Generators Service Guide...
  • Page 53 A1 Power Supply. Replace the A3 RF assembly. If you replaced the A1 Power Supply, but the A3 RF assembly was the faulty assembly, the new A1 Power Supply can be returned to Keysight. Figure 1-6...
  • Page 54 +3.35V (D) +3.35V (D) +3.35V (D) FAN_P FAN_P FAN_N FAN_N PS_TEMP +5.1SB OFFn TEMP_SENSE PS_FAULTn PWR_OK PS_ONn a. A= voltages or common ground to analog circuitry. b. D= voltages or common ground to digital circuitry, Keysight X-Series Signal Generators Service Guide...

  • Page 55: A2 Vector Module Troubleshooting (N5172B/82B Only)

    — DS5 once again turns off and DS6 and DS7 turn back on with DS6 once again dimly blinking. — This final pattern of ‘yellow’ LEDs remains constant while the signal generator is on. Keysight X-Series Signal Generators Service Guide...
  • Page 56 Indicates the ARB FPGA has been loaded and it is Failure = Off. If the LED is not ‘On’ the FPGA image has not communicating with the Interface FPGA. been loaded correctly and/or the image is corrupted. Keysight X-Series Signal Generators Service Guide...

  • Page 57: A3 Rf Assembly Troubleshooting

    — If another unit is available, check the SSD in that unit to see if the results are the same. — Directly replace the SSD in the unit and validate that the failure symptoms have been eliminated. Keysight X-Series Signal Generators Service Guide...

  • Page 58: A5 Cpu Assembly Troubleshooting

    5. If you can communicate, re-install the signal generator’s firmware. Go to www.Keysight.com/find/upgradeassistant for information on re-installing the EXG or MXG X-Series firmware. Keysight recommends, when possible, always loading the most recent version of firmware before replacing any assembly. Keysight X-Series Signal Generators Service Guide...
  • Page 59 Press: Utility > Instrument Info > Sel f-Test > Run Complete Sel f-Test. If the firmware still cannot be loaded, proceed to step 7. If reloading the firmware does not correct the symptom, replace the A3 RF assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 60: A6 Front Panel Interface Scan Assembly Troubleshooting

    1. Turn the signal generator off. 2. Using Figure 1-8 locate the DS5, DS6, and the Debug LEDs (off) DS20 - DS27. Figure 1-8 LED DS1 and A6J5-1 Keysight X-Series Signal Generators Service Guide...
  • Page 61 'Off'. DS23-DS27 Controlled by FW indicating that the necessary Failure = OFF. The LEDs are normally 'ON'. The A6 Display sync boot-up delay has occurred. Front Panel Interface Scan board is possibly faulty. Keysight X-Series Signal Generators Service Guide...
  • Page 62 Front Panel removal procedure. Ensure to adequately protect the Front Panel from marring, actual mechanical and/or electrical damage. 6. Follow the Troubleshooting process below for lower level component/circuity that may require further fault determination. Keysight X-Series Signal Generators Service Guide...

  • Page 63: Lcd Display Appears To Be Inoperative (Dark)

    6. Connect via LAN or USB cable to the rear of the unit and connect via the Virtual Control Panel (VCP). Go to “Virtual Control Panel Operation” located in the User's/Service Guide. Then return and continue testing via the use of the VCP. Keysight X-Series Signal Generators Service Guide...
  • Page 64 9. Connect via LAN or USB cable to the rear of the unit and connect via the Virtual Control Panel (VCP). Go to “Virtual Control Panel Operation” located in the User's/Service Guide. Then return and continue testing via the use of the VCP. Keysight X-Series Signal Generators Service Guide...
  • Page 65 Interface Scan assembly. 19.If replacing the Interface Scan assembly does not provide a fix for the LCD Display issue, the most likely cause is a faulty LCD Display. Replace the LCD Display. Keysight X-Series Signal Generators Service Guide...

  • Page 66: The Signal Generator Does Not Power On

    Softkey Location: Utility > Instrument Info > Front Panel Tests — If none of the LEDs blink, replace the A6 Front Panel Interface Scan board. — If some of the LEDs blink, replace the Key Pad assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 67: The Green Front Panel Power Switch Led Or Yellow Standby Led Is Not Working

    1-10, check the green DS3 LED on the A3 RF assembly. — If DS3 is on, continue to step — If DS3 is off, go to step 3. Using Figure 1-10, press line switch S1 on the A3 RF assembly. Keysight X-Series Signal Generators Service Guide...
  • Page 68 Troubleshooting Troubleshooting Assembly Level Problems Figure 1-10 Line Switch Keysight X-Series Signal Generators Service Guide...
  • Page 69 — +3.3VDF, DS1 — +5VDF, DS2 — +5.1VSBF, DS3 — +12VDF, DS4 — +32VAF, DS5 — +5VAF, DS6 — +9VAF, DS7 — +15VAF, DS8 — -7VAF, DS9 — -15VAF, DS10 Figure 1-11 Power Supply LEDs Keysight X-Series Signal Generators Service Guide...
  • Page 70 — If the voltage is not within limits, measure J6-34 on the A3 RF assembly. Refer to Figure 1-11. — If the voltage is within limits, replace W1. — If the voltage is not within limits, go to step Figure 1-12 +5.1V on A6 at J1-34 Keysight X-Series Signal Generators Service Guide...
  • Page 71 — If the voltage is not within limits, the fault is likely with the A1 Power Supply. Replace the A1 Power Supply. — If the voltage is within limits: a. Replace the A3 RF assembly. b. See Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 72: Front Panel Hardkeys Or Softkeys Are Not Functioning

    — Turning the RPG knob to the right should cause positive incremental changes; expected range +10. — Turning the RPG knob to the left should cause negative incremental changes; expected range −10. Figure 1-14 A6 Front Panel Interface Scan Board Keysight X-Series Signal Generators Service Guide...
  • Page 73 +3 Vdc. — If A3J6-11 and A3J6-12 have a voltage of +3 Vdc, replace the W1 ribbon cable. — If A3J6-11 and A3J6-12 do not have a voltage of +3 Vdc, go to step Keysight X-Series Signal Generators Service Guide...
  • Page 74 10.Refer to Figure 1-14. Using an oscilloscope, turn the RPG knob and measure A6J2-26 and A6J2-30. There should be a 4V square pulse. If there is no 4V square pulse, replace the Keypad assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 75: Blank Or Missing Pixels

    6. Set the delay time to 1 hour. 7. Allow the screen saver delay time to elapse. 8. Check to see if the display has gone dark. 9. If the display still has not gone dark, replace the A5 CPU assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 76: A7 Real Time Bbg Assembly Troubleshooting (N5172B/82B)

    Run a complete self- test or A7 Real Time BBG assembly specific self tests. Press: Utility > Instrument Info > Sel f Test > Run Complete Sel f Test. If any self test fails, refer to step 4 of Run Self Test Using the Front Panel. Keysight X-Series Signal Generators Service Guide...

  • Page 77: A7 Micro Deck (N5173B/83B)

    — DS11 and DS12 (red) LED’s normal operation is flicker at boot-up then OFF. — DS3 (amber) LED normal operations is continuously pulsing (heartbeat). — DS1, DS2, DS4 through DS9 have no significance in troubleshooting the instrument. Keysight X-Series Signal Generators Service Guide...

  • Page 78: A8 Floating Bnc Bypass Troubleshooting (N5173B/83B)

    ~100 ohms, between the outside barrel of the BNC and the chassis ground. — If the resistance is ~100 ohms the A8 assembly is good. — If the resistance is not ~100 ohms, replace the A8 assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 79: The Fans Are Not Working

    A1 Power Supply. The four fans are connected in parallel, so if the A1 Power Supply voltage is faulty for one fan, then by design, the voltage will be faulty for all four fans. Replace the A1 Power Supply. Keysight X-Series Signal Generators Service Guide...

  • Page 80: No Lan Activity

    LAN, one of the green DS1 LEDs, viewable through the rear panel, will be on and the other green DS1 LED will blink. — If either of the DS1 LEDs do not respond to an active LAN connection, replace the A5 CPU assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 81: No Front Panel Usb Activity

    The front panel Type-A USB connectors support data transfers. Not all USB memory sticks are compatible with the Type-A USB connector on this signal generator. Go to www.Keysight.com/find/x-series for a list of USB storage devices that work with this signal generator.

  • Page 82: No Rear-Panel Usb Activity

    Verify the rear-panel Mini-B USB cable is inserted deeply enough to make proper contact. b. If the rear-panel Mini-B USB cable is inserted deeply enough to make proper contact, replace the A5 CPU assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 83: No Gpib Activity

    2. Send a SCPI command to the signal generator. 3. Verify the signal generator responds to the SCPI command. 4. If the signal generator does not respond to the SCPI command, replace the A5 CPU assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 84: Error Messages

    Troubleshooting Error Messages Error Messages For more information on Error Messages go to the error messages list on the documentation CD, N5180-90007, or online at http://literature.cdn.keysight.com/litweb/pdf/N5180-90020.pdf. Keysight X-Series Signal Generators Service Guide...

  • Page 85: Troubleshooting Unlocks

    3. If the external reference signal and connection is good, replace the A3 RF Assembly. — If the signal generator is not connected to an external reference: 1. Replace the A3 RF assembly. 2. Go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 86: 512 Reference Unlocked

    3. If the external reference signal and connection is good, replace the A3 RF Assembly. — If the signal generator is not connected to an external reference: 1. Replace the A3 RF assembly. 2. Go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 87: 532 Pci Bridge Fpga Dcm Unlocked

    A 533 RF Analog FPGA DCM Unlocked message indicates the FPGA clocks are not working correctly. — If this message appears: 1. Replace the A3 RF assembly. 2. Go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 88: Troubleshooting Unlevels

    9 kHz to 10 MHz +13 dBm +17 dBm 10 MHz to 3 GHz +18 dBm +24 dBm 3 GHz to 5 GHz +16 dBm +19 dBm 5 GHz to 6 GHz +16 dBm +18 dBm Keysight X-Series Signal Generators Service Guide...
  • Page 89 >3.2 GHz to 20 GHz +11 dBm +18 dBm >3.2 GHz to 17 GHz +7 dBm +15 dBm >17 GHz to 31.8 GHz +7 dBm +13 dBm >31.8 GHz to 40 GHz +7 dBm +12 dBm Keysight X-Series Signal Generators Service Guide...

  • Page 90: Troubleshooting The Rf Path (N5171B/81B/72B/82B)

    Attempt to verify that the A2 Vector Module is not contributing to the unleveled or under power condition. Refer to “A2 Vector Module Troubleshooting (N5172B/82B Only)” on page b. If the A2 Vector Module is likely not contributing to the condition, replace the A3 RF assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 91: Troubleshooting No, Low, Or Unleveled Output Power (N5173B/83B)

    6. Press AMPTD > ALC Off On to On 7. Let the signal generator sweep until the spectrum analyzer displays a sufficient number of points to provide a good representation of power performance across the range of frequencies in the sweep. Keysight X-Series Signal Generators Service Guide...

  • Page 92: Low Output Power Or No Output Power < 3.2 Ghz (N5173B/83B)

    — Press Freq Start > 100 > kHz. — Press Freq Stop > 3.1999 > GHz. — Press # Points > 501 > Enter. — Press More > Step Dwell > 2 > msec. Keysight X-Series Signal Generators Service Guide...
  • Page 93 2. Using Figure 1-17, remove the W20 semi-rigid cable that is connected between the A3 RF assembly output and the low band coupler input on the A7 Micro Deck. Keysight X-Series Signal Generators Service Guide...
  • Page 94 Set the reference level to +25 dBm (or maximum available power). c. Set the start frequency to 50 kHz. d. Set the stop frequency to 3.2 GHz. e. Set Trace to Max Hold. Keysight X-Series Signal Generators Service Guide...
  • Page 95 — If the measured power is ≥ 23 dBm and the signal generator has the standard RF output (front panel output), continue to “Checking Attenuator Output Signals < 3.2 GHz (N5173B/83B)” on page — Reconnect W20 Keysight X-Series Signal Generators Service Guide...
  • Page 96 1-18, remove the attenuator output cable, and connect the attenuator output to the spectrum analyzer. (The attenuator output connector is a 2.4 mm female connector and requires a cable with a 2.4 mm male connector.) Figure 1-18 Attenuator output cable Keysight X-Series Signal Generators Service Guide...
  • Page 97 6. Using the marker feature on the spectrum analyzer, measure the lowest power level displayed for sweep points between 100 kHz and 3.1999 GHz, and record the lowest power reading. Keysight X-Series Signal Generators Service Guide...
  • Page 98 Measure the loss through the RF output connector. g. If the RF connector is bad, replace the connector. h. If any parts are replaced, go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 99: Low Output Power Or No Output Power ≥ 3.2 Ghz (N5173B/83B)

    4. Set up the spectrum analyzer: a. Press Preset. b. Set the reference level to +10 dBm. c. Set the start frequency to 2.3 GHz. d. Set the stop frequency to 5.3 GHz. e. Set Trace to Max Hold. Keysight X-Series Signal Generators Service Guide...
  • Page 100 Turn off the signal generator and reinstall the W21 cable between the A3 RF assembly output and the 20 GHz doubler input. b. Continue to Checking Attenuator Output Signals ≥ 3.2 GHz (N5173B/83B). Keysight X-Series Signal Generators Service Guide...
  • Page 101 Press RF On/Off to On. 5. Turn on the signal generator and set it as follows: a. Press AMPTD > <maximum settable power> > dBm. b. Press AMPTD > ALC Off On to Off. Keysight X-Series Signal Generators Service Guide...
  • Page 102 Measure the loss through the RF output connector. g. If the RF connector loss is >2dB, replace the connector. 7. If any of the parts are replaced, go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 103: Checking Alc Operation < 3.2 Ghz (N5173B/83B)

    Figure 1-20, remove the W23 modulator drive cable from ALC LOB MOD (J18). 4. Measure the center pin voltage on the J18 connector using an oscilloscope. Figure 1-20 ALC LOB MOD Connector and Cable Keysight X-Series Signal Generators Service Guide...
  • Page 104 1-20) to the A3 RF assembly. — If the cable is bad, replace the cable. — If the cable is good, replace the RF assembly. 12.Go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 105: Amplitude Modulation Problems (N5173B/83B)

    Press AM Type LIN EXP to EXP. g. Press AM Depth > 40 > dB. h. Press More > Setup AM Source > AM Rate > 400 > Hz. Figure 1-21 ALC TP 40 Keysight X-Series Signal Generators Service Guide...
  • Page 106 — If the measured voltage is not > 2.5 Vp–p on ALC TP 40, replace the A3 RF assembly. — If the measured voltage is > 2.5 Vp–p on ALC TP 40, replace the A7 Micro Deck. 4. Go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 107: Pulse Modulation Problems (N5173B/83B)

    6. If no pulse modulation is present at either frequency, replace the A3 RF Assembly and go to step 7. If pulse modulation is present at 5 GHz, but is not present at 2 GHz, replace the A3 RF Assembly and go to step Keysight X-Series Signal Generators Service Guide...
  • Page 108 10.If pulse modulation is present on ALC J1-A7 and occurs at < 3.2 GHz, but not at > 3.2 GHz, replace the A7 Micro Deck. 11.If any of the assemblies are replaced, go to Chapter 4, “Post-Repair Procedures and Operational Performance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 109: Troubleshooting The 6 Ghz Electronic Attenuator

    1. Refer to Figure 1-23. Use a voltmeter with a small probe to measure the output voltage +5.1V at J10-F23 and +/-15V at J10-A1 and J10-A3 on the A3 RF assembly. Figure 1-23 +5.1V and +/-15V Keysight X-Series Signal Generators Service Guide...
  • Page 110 If the voltages are still incorrect replace the A3 RF assembly. 1. If you replaced the A1 Power Supply, but the A3 RF assembly was the faulty assembly, you can return the new A1 Power Supply to Keysight. Keysight X-Series Signal Generators Service Guide...

  • Page 111: Troubleshooting Harmonic Spurious

    All mixing products and by-products are generated on the A3 RF assembly. Harmonic spurious problems will most likely be associated with the A3 RF assembly. — Spurious harmonic levels beyond the published specifications of the N5181B/82B require the replacement of the A3 RF assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 112: To Verify Harmonic Performance At The Rf Output

    Compare the power level of the marker against the specified harmonic performance level for your signal generator. Keysight X-Series Signal Generators Service Guide...

  • Page 113: Troubleshooting Non-Harmonic Spurious

    These spurs are generated by the RF signal passing A3 RF assembly through the mixer in the Heterodyne band. a. After replacing the A3 RF assembly, go to Chapter 4, “Post-Repair Procedures and Operational Perfor- mance Verification.”. Keysight X-Series Signal Generators Service Guide...

  • Page 114: Troubleshooting Performance Test Problems

    Troubleshooting Troubleshooting Performance Test Problems Troubleshooting Performance Test Problems This section describes the available Keysight X-Series signal generator performance tests. These performance tests verify that the signal generator meets specifications. All test equipment configurations, cables and adapters must be properly IMPORTANT torqued.

  • Page 115: Troubleshooting Adjustment Test Problems (N5173B/83)

    2. A7 Micro Deck Limited absolute power calibration A7 Micro Deck ALC mod driver calibration (fails in the low frequency band) A3 RF Assembly ALC mod driver calibration (fails in the high frequency band) A7 Micro Deck Keysight X-Series Signal Generators Service Guide...

  • Page 116: Automated Performance Test Problems

    Replace the A3 RF assembly Amplitude Switching Speed Replace the A3 RF assembly Frequency Switching Speed Replace the A3 RF assembly Timebase Aging Rate (Optional - Manual Performance Test) Replace the A3 RF assembly Keysight X-Series Signal Generators Service Guide...
  • Page 117 Troubleshooting Troubleshooting Performance Test Problems Keysight X-Series Signal Generators Service Guide...

  • Page 118: 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.

  • Page 119: Shipping A Defective Assembly Back To Keysight Technologies

    Keysight Technologies. (Keysight Technologies pays postage on boxes mailed within the United States.) If you are outside the United States, do not use the return address label; instead, address the box to the nearest Keysight Technologies sales and service office. Keysight X-Series Signal Generators Service Guide...

  • Page 120: Frequency And Hardware Options

    Replaceable Parts Frequency and Hardware Options Frequency and Hardware Options The following options are available with the Keysight N5171B/72B/73B EXG and N5181B/82B/83B MXG X-Series signal generators. Frequency Options 9 kHz to 1 GHz frequency range (N5171B only) 9 kHz to 3 GHz frequency range...
  • Page 121 Narrow Pulse Modulation up to 31.8 GHz (N5173B/83B only) (not compatible with Option UNW) Fast Frequency Switching greater than 1.15 ms and +/-0.05 percent of final frequency (N5173B/83B only) (not compatible with Option UNZ) Keysight X-Series Signal Generators Service Guide...

  • Page 122: Assemblies, Cables, And Hardware

    Screw-Machine M3.0 8 -PN-TX 0515-0372 2-14 N5171B/81B - (Qty 4 required) N5172B/82B - (Qty 10 required) Screw-Machine Pan - Torx T8 - M2.5 x 0.45 - 6 mm 0515-0366 2-14 N5172B/82B only) - Qty 4 Keysight X-Series Signal Generators Service Guide...
  • Page 123 2-36 A7A1 Real Time Aux Power Supply w/o cover N5180-60430 (N5172B, 82B, Option 660 only) 2-21 2-37 Aux A7A1 Power Supply Cover (only) - N5180-60431 with top insulator installed (N5172B, 82B, Option 660 only) Keysight X-Series Signal Generators Service Guide...
  • Page 124 Set of 4 Bottom Feet with Tilt Stands 5000-0913 2-19 2-19 Outside Instrument Cover W1312-00128 2-19 Hole Plug, Bottom Feet - 1 ea W1312-40032 2-20 Front Panel Cover N5180-40012 Hard Transit Case w/foam (not shown) N5180-80053 Keysight X-Series Signal Generators Service Guide...
  • Page 125 All option configurations A3 RF Assembly Front Panel Output (UNM) N5180-60457 N5180-69457 All option configurations 503 or 506 A3 RF Assembly Rear Panel Output (1EM) N5180-60425 N5180-69425 (rear panel RF All option configurations output) Keysight X-Series Signal Generators Service Guide...
  • Page 126 1EA, 1EQ, UNV, UNX, UNY, UNZ, or 099 A3 RF Assembly Front Panel Output N5180-60424 N5180-69424 All option configurations 503 or 506 A3 RF Assembly Rear Panel Output (1EM) N5180-60425 N5180-69425 (rear panel RF All option configurations output) Keysight X-Series Signal Generators Service Guide...
  • Page 127 0515-0372 2-15 (Qty 11) Screw-Screw-Machine 90-DEG-FLT-HD Torx- 0515-1227 2-15 T10 M3 x 0.5 6mm-LG (Qty 2) 2-15 Washer Lock .505ID (BNC connectors on rear-panel) 2190-0068 N5171B/81B - (Q REQUIRED N5172B/82B - (Qty 15 required) Keysight X-Series Signal Generators Service Guide...
  • Page 128 Option 1EM, (rear panel output), 2.4 mm RF connector N5180-60464 (new) N5180-69464 (exchange) Option 1EM, (rear panel output), Type N RF connector N5180-60462 (new) N5180-69462 (exchange) A8 BNC Bypass Board E8251-63665 2-23 2-23 2-39 B1 thru B4 Fan Assembly (each) N5180-60433 Keysight X-Series Signal Generators Service Guide...
  • Page 129 Set of 4 Bottom Feet with Tilt Stands 5000-0913 2-19 Outside Instrument Cover W1312-00128 2-19 Hole Plug, Bottom Feet - 1 ea W1312-40032 Front Panel Cover N5180-40012 2-20 Hard Transit Case w/foam (not shown) N5180-80053 Keysight X-Series Signal Generators Service Guide...
  • Page 130 (Option 012) (N5172B, 82B only) 2-25 2-14 W16, LO OUT to LO IN - N5180-20178 & Semi-Rigid Jumper Cable (Option 012) (N5172B, 82B only) W17, Rear Panel (I Input) Cable N5180-60458 2-26 (Option 1EM only) Keysight X-Series Signal Generators Service Guide...
  • Page 131 Type-N Instruments N5180-20218 2-29 3.5 mm Instruments N5180-20216 2-29 2-29 2.4 mm Instruments N5180-20213 2-21 2-26 Fan Cable Clip (4 ea) N5180-60438 & Aux Power Supply Cable Clip (4 ea) W6 Clamp (2 ea) Keysight X-Series Signal Generators Service Guide...

  • Page 132: Hardware

    This section shows the hardware and other instrument parts in your signal generator. — Front Panel page 126 — Rear Panel page 135 — “Main Chassis with Inside Covers” on page 138 — “Outer Instrument Cover and Associated Parts” on page 140 Keysight X-Series Signal Generators Service Guide...
  • Page 133 Replaceable Parts Assemblies, Cables, and Hardware Front Panel Figure 2-1 Front Panels Keysight X-Series Signal Generators Service Guide...
  • Page 134 Front Panels Figure 2-3 Front Panel View Item Description Ind ividual Part Number Overlay, Front Panel left N5180-80033 Nameplate RPG Knob W1312-40017 Large Keypad Overlay Washer-Wavy 2190-0102 Nut-Hex 2950-0035 RF Connector Table 2-1 Table 2-6 Keysight X-Series Signal Generators Service Guide...
  • Page 135 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-4 Front Panel Assemblies Item Description Ind ividual Part Number Front Panel Assembly Table 2-1 Table 2-6 Screws (4 ea) 0515-5844 Wire-mesh EMI Gasket 8160-0660 Keysight X-Series Signal Generators Service Guide...
  • Page 136 - N5172B, 82B N5180-20212 - N5173B, 83B not shown Screws (3 ea) 0515-1227 Figure 2-6 Front Panel Trim and Option 1EM Hole Plug Item Description Ind ividual Part Number Side Trim 5041-9170 Hole Plug 6960-0517 Keysight X-Series Signal Generators Service Guide...
  • Page 137 Key Pad Flubber - N5180-40011 Figure 2-8 Key Pad Assembly Parts - N5180-60409 Item Description Ind ividual Part Number Key Pad Flubber N5180-40011 Keypad PC Board Side Support not shown Screws (3 ea) 0515-0665 Keysight X-Series Signal Generators Service Guide...
  • Page 138 6 pin wire cable not shown Screws (2 ea) 0515-1227 Figure 2-10 USB Board Parts - N5180-60411 Item Description Ind ividual Part Number USB Board N5180-60411 W2 USB Ribbon Cable N5180-60186 not shown Screw (1 ea) 0515-0374 Keysight X-Series Signal Generators Service Guide...
  • Page 139 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-11 LCD Assembly Parts - N5180-60412 Item Description Ind ividual Part Number LCD Display Display Flex Cable Compression Spring Keysight X-Series Signal Generators Service Guide...
  • Page 140 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-12 EMI LCD Glass Filter Parts - N5180-60413 Item Description Ind ividual Part Number Filter - LCD Glass Display Boot Display Hold-Down Boot Compression Spring Keysight X-Series Signal Generators Service Guide...
  • Page 141 Assemblies, Cables, and Hardware Figure 2-13 A6 Front Panel Interface Scan Assembly Parts - N5180-60428 Item Description Ind ividual Part Number Interface Board W3 Interface Ribbon Cable 8121-1382 not shown Screws (7 ea) 0515-0372 Keysight X-Series Signal Generators Service Guide...
  • Page 142 Replaceable Parts Assemblies, Cables, and Hardware Rear Panel Figure 2-14 Rear Panel View Keysight X-Series Signal Generators Service Guide...
  • Page 143 Rear Panel Hole Plug 6960-0517 LO IN Rear Panel Connector assembly 1250-1666 W16 LO OUT to LO IN Semi-Rigid Jumper Cable N5180-20178 LO OUT Rear Panel Connector assembly 1250-1666 DAC CLK IN Rear Panel Connector assembly 1250-1666 Keysight X-Series Signal Generators Service Guide...
  • Page 144 Ind ividual Part Number LO IN Rear Panel Connector assembly 1250-1666 W16 LO OUT to LO IN Semi-Rigid Jumper Cable N5180-20178 LO OUT Rear Panel Connector assembly 1250-1666 DAC CLK IN Rear Panel Connector assembly 1250-1666 Keysight X-Series Signal Generators Service Guide...
  • Page 145 Replaceable Parts Assemblies, Cables, and Hardware Main Chassis with Inside Covers Figure 2-17 Main Chassis with Inside Covers Keysight X-Series Signal Generators Service Guide...
  • Page 146 Screw - machine M3.0 x 08 FL-TX 0515-1227 Screw - machine M3.0 x 08 PN-TX 0515-0372 Figure 2-18 Chassis Corner Nuts Item Description Ind ividual Part Number Chassis Corner Nut W1312-20038 SST PoP-Rivet 0361-1894 Keysight X-Series Signal Generators Service Guide...
  • Page 147 Ind ividual Part Number Strap Handle assembly W1312-60097 Rear Panel Feet 5041-9611 Bottom Feet 5041-9167 Tilt Stand 1460-1345 Set of 4 Bottom Feet with Tilt Stands 5000-0913 Outside Instrument Cover W1312-00128 Hole Plug, Bottom Feet W1312-40032 Keysight X-Series Signal Generators Service Guide...
  • Page 148 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-20 Front Panel Cover Keysight X-Series Signal Generators Service Guide...

  • Page 149: Assemblies And Cables

    Replaceable Parts Assemblies, Cables, and Hardware Assemblies and Cables Figure 2-21 Assemblies Top View - N5171B/72B/81B/82B Figure 2-22 W4 - W5 Front Panel I/Q Cable Assembly Keysight X-Series Signal Generators Service Guide...
  • Page 150 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-23 Assemblies Top View - N5173B/83B Keysight X-Series Signal Generators Service Guide...
  • Page 151 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-24 Assemblies Bottom View - All Models (N5182B shown) Keysight X-Series Signal Generators Service Guide...
  • Page 152 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-25 Rear Panel Cables - Option 012 Figure 2-26 Option 1EM Cables - N5171B/72B/81B/82B Keysight X-Series Signal Generators Service Guide...
  • Page 153 Ind ividual Part Number RF Connector Table 2-1 Table 2-6 Spacer W19 Semi-Rigid RF Cable N5180-60459 Clamp (2) not shown Screws (2 ea) 0515-0372 Figure 2-28 Location of W19 and 1EM Rear Panel RF Connector- N5171B/72B/81B/82B Keysight X-Series Signal Generators Service Guide...
  • Page 154 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-29 1EM Rear Panel Semi-Rigid RF Cable Assembly Parts N5173B/83B Item Description Ind ividual Part Number RF Connector Table 2-6 W24 1EM Semi-Rigid Cable Table 2-7 Keysight X-Series Signal Generators Service Guide...
  • Page 155 A2 Vector BBG Assembly Parts - N5172B/82B - N5180-60415 Item Description Ind ividual Part Number A2 Vector BBG SDRAM Clamp Bracket, Connector Preload Foam (2 ea) not shown Screw (1 ea) 0515-0372 not shown Screws (4 ea) 0515-0374 Keysight X-Series Signal Generators Service Guide...
  • Page 156 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-31 A3 RF Assembly - See Table 2-2 through Table 2-5 for option-specific assemblies. Item Description Ind ividual Part Number A3 RF Assembly Table 2-2 through Table 2-5 Keysight X-Series Signal Generators Service Guide...
  • Page 157 Figure 2-32 A4 SSD Parts - N5180-60426 Item Description Ind ividual Part Number 40 GB SSD SSD Bracket PCA, Non Volatile Memory not shown Screws (6 ea) 0515-0430 not shown Screws (4 ea) 0515-1227 Keysight X-Series Signal Generators Service Guide...
  • Page 158 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-33 A5 CPU Assembly Parts - N5180-60427 Item Description Ind ividual Part Number CPU Module Thermal Pads (2 ea) not shown Screws (4 ea) 0515-2141 Keysight X-Series Signal Generators Service Guide...
  • Page 159 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-34 CPU Heatsink Parts - N5180-60443 Item Description Ind ividual Part Number CPU Heatsink Thermal Pads (2 ea) Keysight X-Series Signal Generators Service Guide...
  • Page 160 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-35 A7 Real Time BBG Assembly - N5180-60429 Item Description Ind ividual Part Number A7 Real Time BBG Assembly N5180-60429 Keysight X-Series Signal Generators Service Guide...
  • Page 161 A7A1 Real Time Aux Power Supply w/o Cover - N5180-60430 Item Description Ind ividual Part Number A1A1 Real Time Aux Power Supply W12 Power Supply Cable N5180-60181 not shown Screw-Machine W/Crest-Cup-Con-Washer Pan-HD Torx-T10 0515-0372 M3 x 0.5 8mm-LG (4 ea) Keysight X-Series Signal Generators Service Guide...
  • Page 162 Screw-Machine W/Crest-Cup-Con-Washer Pan-HD Torx-T10 0515-0372 M3 x 0.5 8mm-LG (4 ea) Figure 2-38 A8 Real Time BBG Jumper Board - N5180-60432 Item Description Ind ividual Part Number A8 Real Time BBG Jumper Board N5180-60432 Keysight X-Series Signal Generators Service Guide...
  • Page 163 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-39 B1 Through B4 Fan Assembly Parts - N5180-60433 Item Description Ind ividual Part Number Fan Assembly Fan Rivet (4) Grommet Snap Support Fan Motor Keysight X-Series Signal Generators Service Guide...
  • Page 164 Replaceable Parts Assemblies, Cables, and Hardware Figure 2-40 Flash Memory Card - 1819-1026 Item Description Ind ividual Part Number Flash Memory 1819-1026 Keysight X-Series Signal Generators Service Guide...

  • Page 165: Miscellaneous

    ESD connector end cap front-panel RF output 1401-0247 ESD connector end cap-GPIB 1252-5007 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 Keysight X-Series Signal Generators Service Guide...

  • Page 166: Abbreviations Used In Part Descriptions

    (screws) in-phase low frequency meters or metric hardware patch lock (screws) or printed circuit panhead (screws) quadrature quantity radio frequency reverse power protection subminiature type-A TORX recess (screws) Keysight X-Series Signal Generators Service Guide...
  • Page 167 Replaceable Parts Abbreviations Used in Part Descriptions Keysight X-Series Signal Generators Service Guide...

  • Page 168: Assembly Replacement

    You must upgrade your firmware, to at least B.01.40, before replacing any assembly. Go to www.Keysight.com/find/upgradeassistant for information on upgrad ing instrument firmware. When possible, the instrument’s static and dynamic arrays should be configured for the exchange of assemblies before removing any instrument assembly.

  • Page 169: Assembly Installation And Removal Overview

    Each , when enabled will display a message in the lower left quadrant of Install Assembly softkey display indicating assembly prepared for installation or installation has been aborted. Keysight X-Series Signal Generators Service Guide...
  • Page 170 Each , when enabled will display a message in the lower left quadrant of Install Assembly softkey display indicating assembly prepared for installation or installation has been aborted. Keysight X-Series Signal Generators Service Guide...

  • Page 171: Assembly Removal And Installation Procedure

    Overview. Do not proceed with Assembly replacement until step 4 has been completed. Failure to perform this step can result in the hardware not functioning optimally, resulting in instrument errors and possibly self-test failures. Keysight X-Series Signal Generators Service Guide...

  • Page 172: After Replacing Or Repairing An Assembly

    Additionally, certain performance tests may have to also be performed. Refer to Chapter 4, “Post-Repair Procedures and Operational Performance Verification”, on page 239, for the next steps and the list of performance tests required for each assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 173: Assemblies You Can Replace

    “A7 Micro-Deck (N5173B/83B only - Option 1EM)” on page 223 — “A8 Floating BNC Bypass (N5173B/83B only)” on page 225 — “B1 through B4 Fans” on page 227 — “Rear Panel (N5171B/81B)” on page 230 — “Rear Panel (N5172B/82B)” on page 232 Keysight X-Series Signal Generators Service Guide...
  • Page 174 Assembly Replacement Assemblies You Can Replace This page intentionally left blank. Keysight X-Series Signal Generators Service Guide...

  • Page 175: Outer Cover

    When sliding the outer cover back on the signal generator keep fingers away from the back of the front panel. They can get severely pinched. 2. Recommended torque for all screws is 21 in–lbs. Keysight X-Series Signal Generators Service Guide...
  • Page 176 Assembly Replacement Outer Cover Figure 3-3 Outer Cover Removal Keysight X-Series Signal Generators Service Guide...

  • Page 177: Inner Top Cover

    5. Using the T-10 driver, remove the screw (3) from the rear panel. 6. Remove the inner top cover. Replacement Procedure 1. Reverse the order of the removal procedures. 2. Recommended torque for all screws is 9 in–lbs. Keysight X-Series Signal Generators Service Guide...
  • Page 178 Assembly Replacement Inner Top Cover Figure 3-4 Inner Top Cover Removal Keysight X-Series Signal Generators Service Guide...

  • Page 179: Inner Bottom Cover

    5. Using the T-10 driver, remove the screw (3) from the rear panel. 6. Remove the inner bottom cover. Replacement Procedure 1. Reverse the order of the removal procedures. 2. Recommended torque for all screws is 9 in–lbs. Keysight X-Series Signal Generators Service Guide...
  • Page 180 Assembly Replacement Inner Bottom Cover Figure 3-5 Inner Bottom Cover Keysight X-Series Signal Generators Service Guide...

  • Page 181: Front-Panel

    (0515-5844) if available. These screws are provided in the front panel replacement kit. Before removing the front-panel from the signal generator, lift and support the front frame of the signal generator. 7. Slide the front-panel over the RF output connector. 8. Remove the front-panel. Keysight X-Series Signal Generators Service Guide...

  • Page 182: Replacement Procedure

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 21 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 183 Assembly Replacement Front-Panel Figure 3-6 Front-Panel Keysight X-Series Signal Generators Service Guide...

  • Page 184: A1 Power Supply

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 185 Assembly Replacement A1 Power Supply Figure 3-7 A1 Power Supply (N5182B shown) Keysight X-Series Signal Generators Service Guide...

  • Page 186: A2 Vector Bbg Assembly (N5172B And N5182B)

    8. Using the 5/16” open-ended wrench, disconnect the following cables according to the instrument you have: — Instruments without Option 012: Remove cables W7 and W8. — Instruments with Option 012: refer to Figure 3-9. Remove cables W13, W14, and W15. Keysight X-Series Signal Generators Service Guide...

  • Page 187: Replacement Procedure

    Place the cable with the long nut into place first, then connect to the A2 Vector BBG assembly. 3. Recommended torque for all BNC connectors is 21 in–lbs. 4. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 188 Assembly Replacement A2 Vector BBG Assembly (N5172B and N5182B) Figure 3-8 A2 Vector BBG Assembly (N5182B Option 1EM with Option 012) Keysight X-Series Signal Generators Service Guide...
  • Page 189 Assembly Replacement A2 Vector BBG Assembly (N5172B and N5182B) Figure 3-9 Option 012 Cables Keysight X-Series Signal Generators Service Guide...

  • Page 190: A3 Rf Assembly

    3-13. Remove ribbon cable W1. 8. Remove the following assemblies, in the order listed “A4 SSD (N5172B/82B only)” (see page 192 “A5 CPU” (see page 195 c. Rear Panel (N5171B/81B see . N5172B/82B see page 230 page 232 Keysight X-Series Signal Generators Service Guide...

  • Page 191: Replacement Procedure

    3. Recommended torque for all BNC connectors is 21 in–lbs. 4. Perform the post-repair service procedure and performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 192 Assembly Replacement A3 RF Assembly Figure 3-10 Cable Removal for RF Assembly (std) - N5172B and N5182B Figure 3-11 Cable Removal for A3 RF Assembly, Option 012 - N5172B and N5182B Keysight X-Series Signal Generators Service Guide...
  • Page 193 Assembly Replacement A3 RF Assembly Figure 3-12 RF Connector - Screw locations (Type-N Shown) Keysight X-Series Signal Generators Service Guide...
  • Page 194 Assembly Replacement A3 RF Assembly Figure 3-13 A3 RF Assembly - Screw locations Keysight X-Series Signal Generators Service Guide...
  • Page 195 Assembly Replacement A3 RF Assembly Figure 3-14 A3 RF Assembly - Removal Figure 3-15 A3 RF Assembly - Removal Keysight X-Series Signal Generators Service Guide...
  • Page 196 Assembly Replacement A3 RF Assembly Figure 3-16 Loosen A2/A7 Boards screws Keysight X-Series Signal Generators Service Guide...

  • Page 197: A3Bt1 Battery

    To install the battery, the positive side is aligned with the positive sign on the A3 RF assembly’s battery clip. 2. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 198 Assembly Replacement A3BT1 Battery Figure 3-17 A3BT1 Battery Keysight X-Series Signal Generators Service Guide...

  • Page 199: A4 Ssd (N5172B/82B Only)

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 200 Assembly Replacement A4 SSD (N5172B/82B only) Figure 3-18 A4 SSD Keysight X-Series Signal Generators Service Guide...
  • Page 201 Assembly Replacement A4 SSD (N5172B/82B only) Figure 3-19 A4 SSD and A5 CPU Removal Keysight X-Series Signal Generators Service Guide...

  • Page 202: A5 Cpu

    2. Recommended torque for the four CPU screws is 6 in–lbs. 3. Perform the post-repair service procedure and performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 203 Assembly Replacement A5 CPU Figure 3-20 A5 CPU Keysight X-Series Signal Generators Service Guide...

  • Page 204: A6 Front Panel Interface Scan Assembly

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 205 Assembly Replacement A6 Front Panel Interface Scan Assembly Figure 3-21 Front Panel Interface Scan Assembly Figure 3-22 LCD Cable Locking Tabs Keysight X-Series Signal Generators Service Guide...

  • Page 206: Usb Board

    2. Recommended torque for screw is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Figure 3-23 USB Board Location Keysight X-Series Signal Generators Service Guide...
  • Page 207 Assembly Replacement USB Board Figure 3-24 USB Board Removal Keysight X-Series Signal Generators Service Guide...

  • Page 208: Lcd Display

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 209 Assembly Replacement LCD Display Figure 3-25 Sub Panel Figure 3-26 LCD Display Keysight X-Series Signal Generators Service Guide...

  • Page 210: Key Pad

    2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 211 Assembly Replacement Key Pad Figure 3-27 Key Pad Keysight X-Series Signal Generators Service Guide...
  • Page 212 Assembly Replacement Key Pad Figure 3-28 Key Pad Screws Keysight X-Series Signal Generators Service Guide...

  • Page 213: Power Switch

    1. Reverse the order of the removal procedure. 2. Recommended torque for all screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 214 Assembly Replacement Power Switch Figure 3-29 Power Switch Keysight X-Series Signal Generators Service Guide...

  • Page 215: A7 Real Time Bbg Assembly (N5172B And N5182B Option 660)

    Unplug and remove the jumper board. 8. Refer to Figure 3-30. Using the T-10 driver, remove the eight screws (1) attaching the A7 Real Time BBG assembly to the chassis deck. 9. Remove the A7 Real Time BBG assembly. Keysight X-Series Signal Generators Service Guide...

  • Page 216: Replacement Procedure

    A2 board. 2. Recommended torque for all T-10 screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 217 Assembly Replacement A7 Real Time BBG Assembly (N5172B and N5182B Option 660) Figure 3-30 A7 Real Time BBG Assembly (N5172B, N5182B Option 660) Keysight X-Series Signal Generators Service Guide...

  • Page 218: A7A1 Real Time Aux Power Supply

    1. Reverse the order of the removal procedure. 2. Recommended torque for all T-10 screws is 9 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 219 Assembly Replacement A7A1 Real Time Aux Power Supply Figure 3-31 A7 Real Time Aux Power Supply Cable Removal) Keysight X-Series Signal Generators Service Guide...
  • Page 220 Assembly Replacement A7A1 Real Time Aux Power Supply Figure 3-32 A7 Real Time Aux Power Supply Cover) Keysight X-Series Signal Generators Service Guide...
  • Page 221 Assembly Replacement A7A1 Real Time Aux Power Supply Figure 3-33 A7 Real Time Aux Power Supply Keysight X-Series Signal Generators Service Guide...

  • Page 222: Rf Connector

    2. Recommended torque for the three screws is 9 in–lbs. 3. Recommended torque for W9 cable is 9 in–lbs. 4. Perform the post-repair service procedure and performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 223 Assembly Replacement RF Connector Figure 3-34 RF Connector Removal (Type-N Shown) Keysight X-Series Signal Generators Service Guide...

  • Page 224: Rf Connector (N5173B/83B Only - Standard)

    2. Torque screw to 9 in–lbs. 3. Torque the new RF connector to 75 in–lbs. 4. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 225 Assembly Replacement RF Connector (N5173B/83B only - Standard) Figure 3-35 RF Connector (2.4 mm Shown) Keysight X-Series Signal Generators Service Guide...

  • Page 226: A7 Micro-Deck (N5173B/83B Only - Standard)

    A7 Micro Deck to the chassis. 8. Using the T-10 driver, remove the six screws (4) (0515-0664) that secure the A7 Micro Deck to the chassis. 9. Remove the A7 Micro Deck. Keysight X-Series Signal Generators Service Guide...
  • Page 227 Assembly Replacement A7 Micro-Deck (N5173B/83B only - Standard) Figure 3-36 A7 Micro Deck (N5173B/83B only - Standard shown) Keysight X-Series Signal Generators Service Guide...

  • Page 228: Replacement Procedure

    If you lose any screws there are five extra screws located on the cover of the shipping chassis. 9. Torque all screws to 9 in–lbs. 10.Replace the eight screws to secure the cover of the shipping chassis. 11.Return the A7 Micro Deck to Keysight Technologies. See Chapter 4, “Post-Repair Procedures and Operational Performance Verification”.
  • Page 229 Assembly Replacement A7 Micro-Deck (N5173B/83B only - Standard) Figure 3-37 A7 Micro Deck Shipping Chassis Keysight X-Series Signal Generators Service Guide...

  • Page 230: A7 Micro-Deck (N5173B/83B Only - Option 1Em)

    A7 Micro Deck to the chassis. 8. Using the T-10 driver, remove the six screws (4) (0515-0664) that secure the A7 Micro Deck to the chassis. 9. Remove the A7 Micro Deck. Keysight X-Series Signal Generators Service Guide...

  • Page 231: Replacement Procedure

    3. Reverse the order of the removal procedure. 4. Torque all screws to 9 in–lbs. 5. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...

  • Page 232: A8 Floating Bnc Bypass (N5173B/83B Only)

    1. Reverse the order of the removal procedure. 2. Torque the nut to 21 in–lbs. 3. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 233 Assembly Replacement A8 Floating BNC Bypass (N5173B/83B only) Figure 3-38 A8 Floating BNC Bypass Keysight X-Series Signal Generators Service Guide...

  • Page 234: B1 Through B4 Fans

    To re-install the rivets, use the needle-nose pliers to depress the rivet tip before inserting it into the chassis hole. 2. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 235 Assembly Replacement B1 through B4 Fans Figure 3-39 B1 thru B4 Fans (1 of 2) Keysight X-Series Signal Generators Service Guide...
  • Page 236 Assembly Replacement B1 through B4 Fans Figure 3-40 B1 thru B4 Fans (2 of 2) Keysight X-Series Signal Generators Service Guide...

  • Page 237: Rear Panel (N5171B/81B)

    2. Recommended torque for all screws is 9 in–lbs. 3. Recommended torque for all BNC connectors is 21 in–lbs. 4. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 238 Assembly Replacement Rear Panel (N5171B/81B) Figure 3-41 N5171B/81B Rear Panel Removal Keysight X-Series Signal Generators Service Guide...

  • Page 239: Rear Panel (N5172B/82B)

    11.Pull the rear panel away from the signal generator’s chassis. Replacement Procedure 1. Reverse the order of the removal procedure. 2. Refer to Figure 3-45. Recommended torque for the four screws (3) securing the A2 Vector BBG assembly connectors is 6 in–lbs. Keysight X-Series Signal Generators Service Guide...
  • Page 240 4. Recommended torque for all BNC connectors is 21 in–lbs. 5. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Figure 3-42 Flash Memory Card and Cover Removal Keysight X-Series Signal Generators Service Guide...
  • Page 241 Assembly Replacement Rear Panel (N5172B/82B) Figure 3-43 N5172B/82B Option 012 Rear Panel Cables Figure 3-44 N5172B/82B Option 1EM Rear Panel I Q Connector Removal Keysight X-Series Signal Generators Service Guide...
  • Page 242 Assembly Replacement Rear Panel (N5172B/82B) Figure 3-45 N5172B/82B Rear Panel Removal Keysight X-Series Signal Generators Service Guide...

  • Page 243: Rear Panel (N5173B/83B)

    2. Recommended torque for all screws is 9 in–lbs. 3. Recommended torque for all BNC connectors is 21 in–lbs. 4. Perform the post-repair performance tests that pertain to this replacement procedure, see Chapter 4, “Post-Repair Procedures and Operational Performance Verification”. Keysight X-Series Signal Generators Service Guide...
  • Page 244 Assembly Replacement Rear Panel (N5173B/83B) Figure 3-46 N5173B/83B Rear Panel Removal Keysight X-Series Signal Generators Service Guide...
  • Page 245 Assembly Replacement Rear Panel (N5173B/83B) Keysight X-Series Signal Generators Service Guide...

  • Page 246: Post-Repair Procedures And Operational Performance Verification

    Post-Repair Procedures and Operational Performance Verification Post Repair Procedures After changing an assembly, but before performance verification, Keysight recommends that the most recent firmware is loaded into the instrument. To avoid internal calibration failures and potential post-repair errors, before removing any instrument assembly, the instrument’s static and dynamic arrays must be configured for the exchange of assemblies.
  • Page 247 — If this is meant to be a permanent change, With Error: Keysight does not support it. A new A3 RF assembly must be installed, or contact a Keysight “617 Configuration Error: The backup memory contains Technologies service support person for possible license keys for serial number <serial number>.

  • Page 248: Post-Repair Overview

    — If this is meant to be a permanent change, With Error: Keysight does not support it. A new A5 CPU must be installed, or contact a Keysight Technologies “617 Configuration Error: The backup memory contains service support person for possible assistance.

  • Page 249: Manual Performance Tests

    “Relative Frequency Range and Accuracy Check” on page 250 “Leveled Output Power” on page 252 Phase Noise (N5181B/82B/83B only) a. The Phase Noise test procedure is available as part of the N7822A EXG/MXG Series software. Keysight X-Series Signal Generators Service Guide...
  • Page 250 — Verify the power sensor is properly calibrated to the power meter. 2. If the tests setups are correct, go to “Troubleshooting Performance Test Problems” on page 107. Keysight X-Series Signal Generators Service Guide...

  • Page 251: Adjustments (N5173B/83B Only)

    MW Multiplier Pre-level Calibration AM Calibration Limited Absolute Power Calibration ALC Mod Driver a. Assembly requiring adjustment is determined by the type of failure (i.e. low band (A3 RF Assembly) or high band (A7 MW Assembly)). Keysight X-Series Signal Generators Service Guide...

  • Page 252: Automated Performance Verification Tests

    36 months or more often as necessary. Download the service software from http://www.Keysight.com/find/calibrationsoftware or you can purchase the software on a CDROM (a license is required to run the calibration software). If an automated performance verification test fails, go to “Troubleshooting...

  • Page 253: I/Q Calibration (N5172B/82B Only)

    When you perform an I/Q calibration, that calibration data takes precedence over the factory-supplied calibration data. The calibration routines improves performance that may degrade over time or due to temperature changes. Press I/Q > I/Q Calibration > Calibration Type Full Keysight X-Series Signal Generators Service Guide...

  • Page 254: Enhanced Factory Calibration

    On the signal generator: 1. Press Utility > More > Service > I/Q Int Channel Correction Calibrations > Enhanced Factory Calibration. 2. Follow the instructions on the signal generator display to complete the calibration. Keysight X-Series Signal Generators Service Guide...

  • Page 255: Running Self Test

    • The current status of the self-test is: Passed • The current status of the self-test is: Failure. One or more tests have failed. System diagnostics indicate this test as the root failure: xxx Keysight X-Series Signal Generators Service Guide...

  • Page 256: Self Test Failure

    2. If the self-test continues to fail, the signal generator requires service. If you are unable to service the signal generator, send it to a Keysight service center for repair. Include a detailed description of the most significant failure (root failure) and any displayed error messages.

  • Page 257: Relative Frequency Range And Accuracy Check

    (For example, press Gate & ExtArm twice and use the arrow keys to set the value.) 8. Set the frequency: Press Frequency and set the signal generator to the first frequency listed in Table 4-5. 9. Confirm that the measured frequency is within the limits listed. Keysight X-Series Signal Generators Service Guide...

  • Page 258: Troubleshooting Problems With The Frequency Accuracy Check

    Troubleshooting Problems with the Frequency Accuracy Check — Verify the cables are connected correctly. — If you are using a frequency counter, verify that you are using the correct channel for the frequencies you are measuring. Keysight X-Series Signal Generators Service Guide...

  • Page 259: Leveled Output Power

    This test verifies that the CW output power from the signal generator is within defined limits. The following table lists the preferred equipment for this test. Test Equipment Recommended Model Power Meter Keysight E4418B or E4419A/B E-Series or equivalent Power Sensor, Keysight E9304A Input: Type-N (m) —...

  • Page 260: N5171B/81B Alternative Test Procedure

    7. Set the amplitude: Press Amplitude and enter the amplitude value for that frequency. 8. Configure the power meter for the measurement. a. Press the Frequency Cal Fac button on the power meter. b. Select a power meter channel (if applicable). Keysight X-Series Signal Generators Service Guide...
  • Page 261 ±0.8 538 MHz ±0.6 675 MHz ±0.6 850 MHz ±0.6 1075 MHz ±0.6 1350 MHz ±0.6 1700 MHz ±0.6 2150 MHz ±0.6 2700 MHz ±0.6 3400 MHz ±0.6 4300 MHz ±0.6 5400 MHz ±0.6 Keysight X-Series Signal Generators Service Guide...

  • Page 262: N5172B/82B Test Procedure

    Without Set the signal generator frequency to the first value listed in Table Modulation 4-7: Press Frequency > 50 > MHz. b. Set the amplitude to 7 dBm: Press Amplitude > 7 > dBm. Keysight X-Series Signal Generators Service Guide...
  • Page 263 ±0.6 5400 ±0.6 With Modulation 13.Preset the signal generator: Press Preset. 14.Select the factory-supplied waveform SINE_TEST_WFM: a. Press Mode > Dual ARB > Select Waveform. b. Highlight the SINE_TEST_WFM waveform. c. Press Select Waveform. Keysight X-Series Signal Generators Service Guide...
  • Page 264 Table 4-8 Output Power With Modulation N5172B/82B Output Power With Mod ulation Frequency (MHz) Amplitude (dBm) Limits (dB) ±1.05 ±1.05 ±1.05 ±1.05 ±1.05 ±1.05 1275 ±1.05 2025 ±1.05 2750 ±1.05 3750 ±1.05 5250 ±1.05 Keysight X-Series Signal Generators Service Guide...

  • Page 265: N5172B/82B Alternative Test Procedure

    Press Mod On/Off so that the Mod On/Off LED turns off. 6. Continue the procedure from “Without Modulation” on page 255. 7. Continue the procedure from “With Modulation” on page 256 to complete the output power measurements of the N5172B/82B. Keysight X-Series Signal Generators Service Guide...

  • Page 266: Troubleshooting Problems With The Output Power Check

    If this does not occur, manually enter the correct calibration factors for the power sensor you are using. — Verify that the power sensor is properly calibrated to the power meter. Keysight X-Series Signal Generators Service Guide...
  • Page 267 Post-Repair Procedures and Operational Performance Verification Leveled Output Power Keysight X-Series Signal Generators Service Guide...

  • Page 268: Safety And Regulatory

    Keysight Technologies Signal Generators N517B/72B/73B EXG, N5181B/82B/83B MXG Service Guide Safety and Regulatory How to Use This Chapter This chapter provides information on the following: — “General Safety Considerations” on page 262 — “Lithium Battery Disposal” on page 263 —...

  • Page 269: General Safety Considerations

    This product must be used in a normal condition (in which all means for protection are intact) only. 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. Keysight X-Series Signal Generators Service Guide...

  • Page 270: 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 271 Safety and Regulatory Certification Keysight X-Series Signal Generators Service Guide...

  • Page 272: Instrument History

    Keysight Technologies Signal Generators N517B/72B/73B EXG, N5181B/82B/83B MXG Service Guide Instrument History How to Use this Chapter This chapter documents changes that have been made to the N518xB signal generators. If your signal generator is an early version these changes may affect it.
  • Page 273 Instrument History How to Use this Chapter Keysight X-Series Signal Generators Service Guide...
  • Page 274 RF connector cables USB Board hardware automated performance tests replaceable assemblies lithium battery disposal battery, replacement replacement before you replace an assembly manual performance tests CPU, replacement micro deck, replacement micro-deck, replacement Keysight X-Series Signal Generators Service Guide...
  • Page 275 RF connector, replacement RF path, troubleshooting safety, general considerations self test self-tests overview running signal generator, returning to Keysight Technolo- gies troubleshooting troubleshooting output power troubleshooting, 6 GHz electronic attenuator Keysight X-Series Signal Generators Service Guide...
  • Page 276 This information is subject to change without notice. © Keysight Technologies 2012-2015 Edition 1, July 2015 N5180-90059 www.keysight.com...

This manual is also suitable for:

N5183b mxgN5182b mxgN5172b exgN5173b exgN5181b mxg

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