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Anritsu Company Remote Spectrum Monitor MS27201A Maintenance Manual

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Maintenance Manual
Remote Spectrum Monitor™
MS27201A
High-Performance RF Spectrum Monitor
MS27201A-0709 9 kHz to 9 GHz (Option 709)
MS27201A-0720 9 kHz to 20 GHz (Option 720)
MS27201A-0743 9 kHz to 43.5 GHz (Option 743)
Anritsu Company
P/N: 10580-00482
490 Jarvis Drive
Revision: A
Morgan Hill, CA 95037-2809
Published: January 2022
USA
Copyright 2022 Anritsu Company
http://www.anritsu.com

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  • Page 1 MS27201A-0709 9 kHz to 9 GHz (Option 709) MS27201A-0720 9 kHz to 20 GHz (Option 720) MS27201A-0743 9 kHz to 43.5 GHz (Option 743) Anritsu Company P/N: 10580-00482 490 Jarvis Drive Revision: A Morgan Hill, CA 95037-2809 Published: January 2022 Copyright 2022 Anritsu Company http://www.anritsu.com...
  • Page 2 This product and its manuals may require an Export License or approval by the government of the product country of origin for re-export from your country. Before you export this product or any of its manuals, please contact Anritsu Company to confirm whether or not these items are export-controlled.

  • Page 3: Table Of Contents

    Table of Contents Chapter 1—General Information Introduction ..............1-1 Additional Documentation .
  • Page 4 Chapter 4—Troubleshooting Introduction ..............4-1 Communication Problems.

  • Page 5: Chapter 1-General Information

    Chapter 1 — General Information Introduction This manual provides the recommended test equipment and tools, replaceable parts list, verification procedures, part replacement procedures, maintenance instructions, and test record templates for the MS27201A Anritsu Remote Spectrum Monitor. Familiarity with the basic operation is assumed (for example, how to change measurement modes, preset the instrument, and set up measurements).

  • Page 6: Required Test Equipment And Tools

    1-3 Required Test Equipment and Tools General Information Required Test Equipment and Tools Table 1-2 provides a list of the test equipment used for the performance verification tests of the instrument. The test equipment is critical in making accurate measurements. In some cases, you may substitute certain test equipment having the same critical specifications as the test equipment indicated in the test equipment list.

  • Page 7: Replaceable Parts

    General Information 1-4 Replaceable Parts Table 1-3. Required Tools Tools Specification Wrench 5/16” Wrench 1/2” Wrench 5.5mm Torque Wrench 8 in-lbs Torx Screwdriver Phillips Screwdriver Phillips Screwdriver Nut Driver 5.5 mm Replaceable Parts Table 1-4. f Replaceable Parts Part Number Description Reference Section 3-ND86514<R>...
  • Page 8 1-4 Replaceable Parts General Information PN: 10580-00482 Rev. A MS27201A MM...

  • Page 9: Chapter 2- Verification

    Chapter 2 — Verification Introduction This chapter provides the verification procedures for the MS27201A Remote Spectrum Monitor. Verification tests that are associated with other instrument options are described in Chapter 3, “Assembly Replacement”. Record the measurement results in the test record templates provided in Appendix A, “Test Records”.

  • Page 10: Pass/Fail Determination For Instrument Key Parameter Performance Tests

    2-1 Introduction Verification PASS/FAIL Determination for Instrument Key Parameter Performance Tests Figure 2-1 shows the rule that is used to determine the pass/fail status of test results that are associated with warranted specifications. + Uncertainty Measurement Point (Reading) – Uncertainty Measurement Data Upper Specification...

  • Page 11: Frequency Accuracy

    Verification 2-2 Frequency Accuracy Frequency Accuracy Use the following procedures to verify the frequency accuracy of the MS27201A., without and with GPS connection. Record the results in the test records provided in Appendix A There are two procedures involved in verifying the frequency accuracy: •...

  • Page 12: With Gps Connection (Option 31)

    2-2 Frequency Accuracy Verification With GPS Connection (Option 31) Use this procedure to verify the frequency accuracy of the MS27201A. Record the results in the test records provided in Appendix Equipment Required • Anritsu MG3692x Synthesizer • 10 MHz Frequency Reference •...

  • Page 13: Amplitude Accuracy

    Verification 2-3 Amplitude Accuracy Amplitude Accuracy Use the following procedures to verify the amplitude accuracy of the MS27201A and record the results in the test records provided in Appendix There are two procedures involved in verifying the amplitude accuracy: • “Amplitude Accuracy –...
  • Page 14 2-3 Amplitude Accuracy Verification 10. Zero the NRP67T sensor. 11. On the MG3697C, press RF ON. 12. On the MG3697C, set the frequency to 50 MHz. 13. Adjust the NRP67T power level to +10.0 dBm. (The power level reading of MG3697C should be approximately +16 dBm.) 14.

  • Page 15: Amplitude Accuracy - Preamplifier On

    Verification 2-3 Amplitude Accuracy Amplitude Accuracy – Preamplifier On Use the following procedure to verify the amplitude accuracy of the MS27201A with the preamplifier on. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize. Equipment Required •...

  • Page 16: Single Side Band (Ssb) Phase Noise

    2-4 Single Side Band (SSB) Phase Noise Verification Single Side Band (SSB) Phase Noise Use the following procedure to verify the single side-band (SSB) phase noise of the MS27201A. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.
  • Page 17 Verification 2-4 Single Side Band (SSB) Phase Noise 10. Change the Delta Frequency from 10 kHz to 100 kHz and record the difference in level between the peak at 1 GHz and the noise level 100 kHz away at 1000.100 MHz in Table A-11, “Spectral Purity –...

  • Page 18: Second Harmonic Distortion

    2-5 Second Harmonic Distortion Verification Second Harmonic Distortion Use the following procedure to verify the second harmonic distortion of the MS27201A. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize. Equipment Required •...

  • Page 19: Displayed Average Noise Level (Danl)

    Verification 2-6 Displayed Average Noise Level (DANL) Displayed Average Noise Level (DANL) Use the following procedures to verify the Displayed Average Noise Level (DANL) of the MS27201A. Record the results in the test records provided in Appendix There are two procedures involved in verifying the DANL of MS27201A: •...

  • Page 20: Danl - Preamplifier On

    2-6 Displayed Average Noise Level (DANL) Verification DANL – Preamplifier On Use the following procedure to verify the Displayed Average Noise Level (DANL) of the MS27201A with the Preamplifier On. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

  • Page 21: Residual Spurs

    Verification 2-7 Residual Spurs Residual Spurs Use the following procedures to verify the Residual Spurs of the MS27201A with the Preamplifier Off and Preamplifier On. Record the results in the test records provided in Appendix There are two procedures involved in verifying the Residual Spurs: •...

  • Page 22: Residual Spurs - Preamplifier On

    2-7 Residual Spurs Verification Residual Spurs – Preamplifier On Use the following procedure to verify the Residual Spurs of the MS27201A with the Preamplifier On. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize. Equipment Required •...

  • Page 23: Input Related Spurs

    Verification 2-8 Input Related Spurs Input Related Spurs Use the following procedure to verify the Input Related Spurs of the MS27201A. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize. Equipment Required •...

  • Page 24: Third Order Intercept (Toi)

    2-9 Third Order Intercept (TOI) Verification Third Order Intercept (TOI) Use the following procedure to verify the Third Order Intercept (TOI) of the MS27201A. Record the results in the test records provided in Appendix Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize. Equipment Required •...
  • Page 25 Verification 2-9 Third Order Intercept (TOI) 14. Turn on the RF output of both the MG3692C and MG3710A. 15. On the MS27201A perform a Peak Search and record the peak value at 2400.151 MHz in Table A-20, “Third Order Intercept (TOI)” on page A-11.
  • Page 26 2-9 Third Order Intercept (TOI) Verification 2-18 PN: 10580-00482 Rev. A MS27201A MM...

  • Page 27: Chapter 3-Assembly Replacement

    Chapter 3 — Assembly Replacement Introduction This chapter describes opening and closing the Remote Spectrum Monitor case along with basic parts replacement steps. The sections are as follows: • Section 3-2 “Top Cover Removal” on page 3-2 • Section 3-3 “Front Panel Removal” on page 3-3 •...

  • Page 28: Top Cover Removal

    3-2 Top Cover Removal Assembly Replacement Top Cover Removal This procedure provides instructions for opening the MS27201A case. With the case opened, the internal assemblies can be removed and replaced as detailed in the following sections. 1. Disconnect any external cables from the MS27201A; for example, Power, Ethernet, GPS, or External Reference cables.
  • Page 29 Assembly Replacement 3-3 Front Panel Removal Front Panel Removal 1. Remove the top cover of the instrument as described in Section 3-2 “Top Cover Removal” on page 3-2. 2. Remove the Kapton® tape and then disconnect the SMP cable from the VSA, shown at location 1. See Figure 3-2.
  • Page 30 3-3 Front Panel Removal Assembly Replacement 4. Remove the seven screws securing the front panel shown at location 1. See Figure 3-3. 5. Using a 5/16" wrench, remove the five nuts and washers shown at location 2. See Figure 3-3. 6.

  • Page 31: Front Panel Removal

    Assembly Replacement 3-4 Handle Removal Handle Removal 1. Remove the top cover of the instrument as described in Section 3-2 “Top Cover Removal” on page 3-2. 2. Remove the front panel of the instrument as described in Section 3-3 “Front Panel Removal” on page 3-3 3.

  • Page 32: Semi-Rigid Cable And Dc Block Removal

    3-5 Semi-rigid Cable and DC Block Removal Assembly Replacement Semi-rigid Cable and DC Block Removal The semi-rigid cable connecting the RF input adapter and the step attenuator on the VSA is normally a part of the VSA Exchange Assembly, but it may be replaced independently. 1.

  • Page 33: Vsa Removal

    Assembly Replacement 3-6 VSA Removal VSA Removal 1. Remove the instrument’s top cover as described in Section 3-2 “Top Cover Removal” on page 3-2. 2. Remove the front panel as described in Section 3-3 “Front Panel Removal” on page 3-3. 3.

  • Page 34: Main Pcb Removal

    3-7 Main PCB Removal Assembly Replacement Main PCB Removal 1. Remove the VSA from the Main PCB as described in Section 3-6 “VSA Removal” on page 3-7. 2. Using a 5.5 mm nut driver, remove the five standoffs shown at location 1.See Figure 3-7.

  • Page 35: Smp Jack-To-Jack Adapter Removal

    Assembly Replacement 3-8 SMP Jack-to-Jack Adapter Removal SMP Jack-to-Jack Adapter Removal 1. Remove the VSA from the Main PCB as described in Section 3-6 “VSA Removal” on page 3-7. 2. Carefully remove the SMP Jack-to-Jack adapter located between the VSA and the Main PCB shown at location 1 by gently squeezing with your fingers and pulling the adapter straight up.

  • Page 36: Rf Input/If Output Connector Removal

    3-9 RF Input/IF Output Connector Removal Assembly Replacement RF Input/IF Output Connector Removal 1. Remove the front panel from the chassis, as described in Section 3-3 “Front Panel Removal” on page 3-3 2. Using a 1/2" wrench, remove the nut and washer from the RF input connector shown at location 1. See Figure 3-9.

  • Page 37: 3-10 Pcie Interface Assembly Removal

    Assembly Replacement 3-10 PCIe Interface Assembly Removal 3-10 PCIe Interface Assembly Removal 1. Remove the instrument’s top cover as described in Section 3-2 “Top Cover Removal” on page 3-2. 2. Remove the white CLIK-Mate cable harness shown at location 1 by pressing the securing latch and pulling the connector out of the socket, then remove the Nano Pitch I/O cable by pulling the connector out of the socket.

  • Page 38: Fan Removal

    3-11 Fan Assembly Removal Assembly Replacement 3-11 Fan Assembly Removal 1. Remove the instrument’s top cover as described in Section 3-2 “Top Cover Removal” on page 3-2. 2. Disconnect the fan cable from the Main PCB shown at location 1. See Figure 3-11.

  • Page 39: Chapter 4-Troubleshooting

    Chapter 4 — Troubleshooting Introduction This chapter describes the primary troubleshooting operations that can be performed by all Anritsu Service Centers. Perform the troubleshooting suggestions in the order they are listed. Only qualified Anritsu personnel should replace internal assemblies. Major subassemblies shown in Table 1-4 are typically the items that may be replaced.

  • Page 40: Level Accuracy Problems

    4-3 Level Accuracy Problems Troubleshooting Level Accuracy Problems Measured signal is unexpectedly too high or too low: For one- port instruments: 1. Check the N connector for damage and cleanliness. 2. Next, check the connections between the N connector and Main PCB. 3.

  • Page 41: Appendix A-Test Records

    Appendix A — Test Records Introduction This appendix provides the test record templates to record the performance of the MS27201A Remote Spectrum Monitor. Anritsu recommends that you make a copy of the following test record pages and document the measurements each time a performance verification is performed. Continuing to document this process each time it is performed provides a detailed history of instrument performance.

  • Page 42: A-2 Test Records For Spectrum Analyzer Verification

    A-2 Test Records for Spectrum Analyzer Verification Test Records MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-3. Power Level Accuracy at 50 MHz (Preamplifier Off) MS27201A NRP67T Expected MS27201A Input Reference Power Power Measured Measurement Frequency...
  • Page 43 Test Records A-2 Test Records for Spectrum Analyzer Verification MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-4. Power Level Accuracy at 5 GHz (Preamplifier Off) MS27201A NRP67T Expected MS27201A Input Reference Power Power Measured Measurement Frequency...
  • Page 44 A-2 Test Records for Spectrum Analyzer Verification Test Records MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-6. Power Level Accuracy at 18 GHz (Preamplifier Off) MS27201A NRP67T Expected MS27201A Input Reference Power Power Measured Measurement Frequency...
  • Page 45 Test Records A-2 Test Records for Spectrum Analyzer Verification MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-8. Power Level Accuracy at 31 GHz (Preamplifier Off) MS27201A NRP67T Expected MS27201A Input Reference Power Power Measured Measurement Frequency...
  • Page 46 A-2 Test Records for Spectrum Analyzer Verification Test Records MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-10. Power Level Accuracy (Preamplifier On) NRP67T MS27201A Power Expected Measurement Frequency Level Power Level MS27201A Measured Power Level Uncertainty Specification 10 kHz –10 dBm...
  • Page 47 Test Records A-2 Test Records for Spectrum Analyzer Verification MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-12. Second Harmonic Distortion Second Harmonic Distortion Measureme (100.2 Meas Value – 50.1 Meas Frequency Measured Value Value) Uncertainty Specification...
  • Page 48 A-2 Test Records for Spectrum Analyzer Verification Test Records MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-15. Displayed Average Noise Level (Preamplifier On, for 9 and 20 GHz Units) Start Stop Measurement Frequency Frequency Measured Value –...
  • Page 49 Test Records A-2 Test Records for Spectrum Analyzer Verification MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-16. Residual Spurs (Preamplifier Off) Start Stop Measurement Frequency Frequency Measured Value Uncertainty Specification 9 kHz 100 kHz 300 Hz 10 Hz 4.0 dB...
  • Page 50 A-2 Test Records for Spectrum Analyzer Verification Test Records MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-18. Residual Spurs (Preamplifier On) Start Stop Measurement Frequency Frequency Measured Value Uncertainty Specification 9 kHz 100 kHz 300 Hz 10 Hz 4.0 dB...
  • Page 51 Test Records A-2 Test Records for Spectrum Analyzer Verification MS27201A Firmware Rev: ______________ Operator: ____________________ Date: ____________ Serial Number: _______________ Options: __________________________________________________ Table A-20. Third Order Intercept (TOI) Measurement Frequency Measured Value Uncertainty Specification 2400.151 MHz 2399.851 MHz Calculated TOI at 2400 MHz 1.0 dB +14 dBm minimum MS2720xA MM...
  • Page 52 A-2 Test Records for Spectrum Analyzer Verification Test Records A-12 PN: 10580-00482 Rev. A MS2720xA MM...
  • Page 54 Anritsu Company 490 Jarvis Drive Anritsu utilizes recycled paper and environmentally conscious inks and toner. Morgan Hill, CA 95037-2809 http://www.anritsu.com...

This manual is also suitable for:

Ms27201a-0709Ms27201a-0720Ms27201a-0743

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