Anritsu Company Remote Spectrum Monitor MS27201A User manual

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
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
http://www.anritsu.com
P/N: 10580-00482
Revision: A
Published: January 2022
Copyright 2022 Anritsu Company

NOTICE
Anritsu Company has prepared this manual for use by Anritsu Company personnel and customers as a guide for the
proper installation, operation and maintenance of Anritsu Company equipment and computer programs. The
drawings, specifications, and information contained herein are the property of Anritsu Company, and any
unauthorized use or disclosure of these drawings, specifications, and information is prohibited; they shall not be
reproduced, copied, or used in whole or in part as the basis for manufacture or sale of the equipment or software
programs without the prior written consent of Anritsu Company.
UPDATES
The latest service and sales contact information, and updated documents can be downloaded from the Anritsu
Website at: http://www.anritsu.com
Notes On Export Management
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.
When disposing of export-controlled items, the products and manuals need to be broken or shredded to such a degree
that they cannot be unlawfully used for military purposes.

MS27201A MM PN: 10580-00482 Rev. A Contents-1
Table of Contents
Chapter 1—General Information
1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Anritsu Customer Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Required Test Equipment and Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-4 Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2— Verification
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
PASS/FAIL Determination for Instrument Key Parameter Performance Tests . . . . . . . . . . 2-2
2-2 Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Without GPS Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
With GPS Connection (Option 31). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-3 Amplitude Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Amplitude Accuracy – Preamplifier Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Amplitude Accuracy – Preamplifier On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-4 Single Side Band (SSB) Phase Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-5 Second Harmonic Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2-6 Displayed Average Noise Level (DANL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
DANL – Preamplifier Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
DANL – Preamplifier On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2-7 Residual Spurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Residual Spurs – Preamplifier Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Residual Spurs – Preamplifier On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-8 Input Related Spurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2-9 Third Order Intercept (TOI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Chapter 3—Assembly Replacement
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Top Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-3 Front Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-4 Handle Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-5 Semi-rigid Cable and DC Block Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-6 VSA Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3-7 Main PCB Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-8 SMP Jack-to-Jack Adapter Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-9 RF Input/IF Output Connector Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3-10 PCIe Interface Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3-11 Fan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Contents-2 PN: 10580-00482 Rev. A MS27201A MM
Chapter 4—Troubleshooting
4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Communication Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3 Level Accuracy Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Appendix A—Test Records
A-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-2 Test Records for Spectrum Analyzer Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

MS27201A MM PN: 10580-00482 Rev. A 1-1
Chapter 1 — General Information
1-1 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).
This manual includes:
•General information including:
•Required Test Equipment and Tools listed in Table 1-2 on page 1-2 and Table 1-3 on page 1-3.
•Replaceable Parts listed in Table 1-4 on page 1-3
•Performance verification procedures included in Chapter 2, “Verification”
•Assembly replacement and troubleshooting procedures:
•Chapter 3, “Assembly Replacement”
•Chapter 4, “Troubleshooting”
•Blank test records are included in Appendix A.
•Copy the blank test records from Appendix A and use them to record measured values. Anritsu
recommends making a copy of the blank test records to document measurements each time a
performance verification is performed. Continuing to document this process each time provides a
detailed history of the instrument performance.
Additional Documentation
1-2 Anritsu Customer Service Centers
To contact Anritsu, please visit the following URL and select the services in your region:
http://www.anritsu.com/contact-us
Table 1-1. Related Manuals
Document Part Number Description
10100-00064 Product Information, Compliance, and Safety Notices
11410-02833 MS27201A Remote Spectrum Monitor Technical Data Sheet
10580-00481 MS27201A Remote Spectrum Monitor Programming Manual
10580-00480 MS27201A Remote Spectrum Monitor User Guide

1-3 Required Test Equipment and Tools General Information
1-2 PN: 10580-00482 Rev. A MS27201A MM
1-3 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.
Table 1-3 provides the list of tools that may be required to remove the screws and nuts of the instrument.
Table 1-2. Required Test Equipment
Instrument / Component Critical Specification Recommended Manufacturer / Model
Synthesizer Frequency: 0.1 Hz to 67 GHz Anritsu MG3697C, with options 2C/3/4/15D/22
Synthesizer Frequency: 2400 MHz Anritsu MG3692C
Signal Generator Frequency: 2400 MHz Anritsu MG3710A
Power Meter Frequency: 67 GHz Rohde and Schwarz, NRP67T
Power Splitter V-Type Anritsu V241C
Attenuator V-Type, 10 dB, Qty 2 Anritsu 41V-10, Qty 2
Attenuator V-Type, 20 dB Anritsu 41V-20
Termination 50 Ω, N Type Anritsu 28N50-2,for 9, 20 GHz units
Termination 50 Ω, K Type Anritsu 28KF50, for 43.5 GHz units
Cable V(m) to V(f) Anritsu 3670V50A-2
Adapter V(m) to K(f) Anritsu 34VKF50
Adapter K(m) to N(m) Anritsu 34NK50
Low Pass Filter Frequency: 50 MHz Mini-Circuits, NLP-50
10 MHz Reference 10 MHz Datum / 9390-6000
Power Splitter N Type Weinschel 1870A
Adapter N Type Anritsu 34NN50A
Adapter N(f) to K(f) Anritsu 71693-R, for 43.5 GHz units
Adapter K(f) to N(f) Anritsu 34NFKF50
Attenuator, Qty 2 20 dB Weinschel 44-20
Attenuator, Qty 2 8 dB Weinschel 44-8
Coaxial Cable, Qty2 N Type Anritsu 15NN50-1.5C
Power Meter 2400 MHz Anritsu ML2438A
Power Sensor 2400 MHz Anritsu MA2442D

General Information 1-4 Replaceable Parts
MS27201A MM PN: 10580-00482 Rev. A 1-3
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 T10
Phillips Screwdriver #1
Phillips Screwdriver #2
Nut Driver 5.5 mm
Table 1-4. f Replaceable Parts
Part Number Description Reference Section
3-ND86514<R> MS27201A Main PCB Assembly Section 3-7 “Main PCB Removal”
3-ND86515<R> MS27201A 9 to 20 GHz VSA Assembly Section 3-6 “VSA Removal”
3-ND86517<R> MS27201A 43.5 GHz VSA Assembly Section 3-6 “VSA Removal”
3-513-156 RF In N Connector (9 to 20 GHz) Section 3-9 “RF Input/IF Output
Connector Removal”
3-83408 RF In K Connector (43.5 GHz) Section 3-9 “RF Input/IF Output
Connector Removal”
3-553-572 SMP Jack-to-Jack Adapter Section 3-8 “SMP Jack-to-Jack Adapter
Removal”
3-83778 Semi Rigid Cable 9 to 20 GHz Front Panel to
VSA
Section 3-3 “Front Panel Removal”
3-83781 Semi Rigid Cable 43.5 GHz Front Panel to VSA Section 3-5 “Semi-rigid Cable and DC
Block Removal”
3-1091-373 DC Block Section 3-5 “Semi-rigid Cable and DC
Block Removal”
3-85975-3 PCIe Interface Assembly Section 3-10 “PCIe Interface Assembly
Removal”
3-516-124 Cable SMA Front Panel to SMP VSA Section 3-3 “Front Panel Removal”
3-790-819 Handle Section 3-4 “Handle Removal”
3-83271 Fan Assembly Section 3-11 “Fan Assembly Removal”

1-4 Replaceable Parts General Information
1-4 PN: 10580-00482 Rev. A MS27201A MM

MS27201A MM PN: 10580-00482 Rev. A 2-1
Chapter 2 — Verification
2-1 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”.
This chapter includes the following performance verification procedures:
•Section 2-2 “Frequency Accuracy” on page 2-3
•Section 2-3 “Amplitude Accuracy” on page 2-5
•Section 2-4 “Single Side Band (SSB) Phase Noise” on page 2-8
•Section 2-5 “Second Harmonic Distortion” on page 2-10
•Section 2-6 “Displayed Average Noise Level (DANL)” on page 2-11
•Section 2-7 “Residual Spurs” on page 2-13
•Section 2-8 “Input Related Spurs” on page 2-15
•Section 2-9 “Third Order Intercept (TOI)” on page 2-16

2-1 Introduction Verification
2-2 PN: 10580-00482 Rev. A MS27201A MM
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.
The measurement uncertainty listed in each test record includes the best estimate of the errors contributed by
the measurement, test equipment, standards, and other correction factors (for example, calibration factors and
mismatch error) based on the suggested equipment, the equipment setup, and the prescribed test procedure.
Most of the uncertainties are type-B per ISO/IEC Guide 98-3, Guide to the Expression of Uncertainty in
Measurement (GUM).
Figure 2-1. Pass/Fail Determination
Measurement Data - Failing Specifications
Measurement Data - Passing Specifications
Measurement Point (Reading)
+ Uncertainty
– Uncertainty
Measurement Data
Nominal
Lower
Specification
Upper
Specification
Nominal
Lower
Specification
Upper
Specification