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

Verification 2-2 Frequency Accuracy
MS27201A MM PN: 10580-00482 Rev. A 2-3
2-2 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:
•“Without GPS Connection”
•“With GPS Connection (Option 31)”
Without GPS Connection
Use the following procedures to verify the frequency accuracy of the MS27201A without GPS connection.
Equipment Required
•Anritsu MG3697C Synthesizer
•Anritsu 3670V50A-2 Coaxial Cable, V(m) to V(f)
•Anritsu 34VKF50 Adapter, V(m) to K(f), for 43.5 GHz units
•Anritsu 34NK50 Adapter, K(m) to N(m), for 9 and 20 GHz units
•10 MHz Frequency Reference
Procedure
1. Connect the external 10 MHz Reference to the MG3697C.
2. Connect the MG3697C RF Out to the MS27201A RF In.
3. Set the MG3697C RF output as follows:
•Power level: –30 dBm
•CW frequency: 1 GHz
4. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
5. Set the MS27201A parameters as follows:
•Center Frequency: 1 GHz
•Reference Level: –10 dBm
•Span: 10 kHz
•RBW: 100 Hz
•VBW: 30 Hz
6. Enable Marker 1 and perform a Peak Search. Record the marker frequency in Table A-1, “Spectrum
Analyzer Frequency Accuracy” on page A-2. Calculate the error by subtracting 1 GHz from the measured
value and record the error in Table A-1 on page A-2.
7. Set the MG3697C frequency to 7 GHz.
8. Set the MS27201A Center Frequency to 7 GHz.
9. Enable Marker 1 and perform a Peak Search. Record the marker frequency in Table A-1, “Spectrum
Analyzer Frequency Accuracy” on page A-2. Calculate the error by subtracting 7 GHz from the measured
value and record the error in Table A-1 on page A-2.
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.
Note Do not connect the 10 MHz Reference to the MS27201A.

2-2 Frequency Accuracy Verification
2-4 PN: 10580-00482 Rev. A MS27201A MM
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 A.
Equipment Required
•Anritsu MG3692x Synthesizer
•10 MHz Frequency Reference
•Anritsu 34RKNF50 Adapter
•Anritsu 15NN50-1.5C RF Coaxial Cable
•BNC(m) to BNC(m) Coaxial Cable
•GPS Antenna
Procedure
1. Connect the 10 MHz Frequency Reference to the 10 MHz Ref In connector on the MG3692x Synthesizers.
2. Connect the MG3692x RF output to RF In, Port 1, on the MS27201A.
3. Power on the 10 MHz Reference Standard, Anritsu MG3692x, and the MS27201A. Allow the instruments
to warm up for 10 minutes.
4. Connect the GPS Antenna to the MS27201A, and confirm GPS coordinates are shown where the message
“No GPS Fix” was shown prior to connecting the antenna.
5. Set the MG3692x output to 1 GHz CW with an RF Output Level of –30 dBm.
6. Set the MS27201A parameters as follows:
•Reference Level: –10 dBm
•Center Frequency: 1 GHz
•Span: 10 kHz
•RBW: 1 kHz
•VBW: 300 Hz
•Sweep Type: Single
7. Enable Marker 1 and perform a Peak Search. Record the marker frequency in Table A-2, “Option 31, GPS
Frequency Accuracy” on page A-1. Calculate the error by subtracting 1 GHz from the measured value
and record the error in Table A-2 on page A-1.
8. Set the MG3697C frequency to 7 GHz.
9. Set the MS27201A Center Frequency to 7 GHz.
10. Enable Marker 1 and perform a Peak Search. Record the marker frequency in Table A-2, “Option 31, GPS
Frequency Accuracy” on page A-1. Calculate the error by subtracting 7 GHz from the measured value
and record the error in Table A-2 on page A-1.

Verification 2-3 Amplitude Accuracy
MS27201A MM PN: 10580-00482 Rev. A 2-5
2-3 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 A.
There are two procedures involved in verifying the amplitude accuracy:
•“Amplitude Accuracy – Preamplifier Off”
•“Amplitude Accuracy – Preamplifier On”
Amplitude Accuracy – Preamplifier Off
Use the following procedure to verify the amplitude accuracy of the MS27201A with preamplifier off.
Equipment Required
•Anritsu MG3697C Synthesizer
•Anritsu V241C Power Splitter
•Anritsu 41V-10 Attenuator
•Rohde and Schwarz NRP67T Power Sensor
•Anritsu 3670V50A-2 Coaxial Cable, V(m) to V(f)
•Anritsu 34VKF50 Adapter, V(m) to K(f), for 43.5 GHz units
•Anritsu 34NK50 Adapter, K(m) to N(m), for 9 and 20 GHz units
•10 MHz Frequency Reference
Procedure
1. Connect the external 10 MHz Reference to both the MG3697C and MS27201A.
2. Connect the MG3697C RF Out to the input of the splitter.
3. Connect the NRP67T directly to one output of the splitter.
4. Connect the 10 dB attenuator to the other output of the splitter.
5. Connect the RF input of the MS27201A to the 10 dB attenuator.
6. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
7. Set the MS27201A parameters as follows:
•Reference Level: 10 dBm
•Attenuation Level: 30 dB
•Preamplifier: Off
•Trace Menu:
•Detector Type: Peak
•Bandwidth Menu:
•RBW: 1 kHz
•VBW: 10 Hz
•Span: 10 kHz
8. Using the Rohde and Schwarz Power Viewer software, set the signal frequency to 50 MHz.
9. On the MG3697C, press RF OFF.
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

2-3 Amplitude Accuracy Verification
2-6 PN: 10580-00482 Rev. A MS27201A MM
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. Set the MS27201A center frequency to 50 MHz.
15. Perform a marker peak search and record the amplitude in Table A-3, “Power Level Accuracy at 50 MHz
(Preamplifier Off)” on page A-2
16. Adjust the Reference Level and Attenuation Level on the MS27201A for the other values in Table A-3,
“Power Level Accuracy at 50 MHz (Preamplifier Off)” on page A-2
17. Adjust the Power Level on the MG3697C for the other power levels in Table A-3, “Power Level Accuracy
at 50 MHz (Preamplifier Off)” on page A-2, and record results for each measurement.
18. Repeat this procedure for the other frequencies using the tables listed below:
•Table A-4, “Power Level Accuracy at 5 GHz (Preamplifier Off)” for all frequency options
•Table A-5, “Power Level Accuracy at 13 GHz (Preamplifier Off)” for 20 and 43.5 GHz units
•Table A-6, “Power Level Accuracy at 18 GHz (Preamplifier Off)” for 20 and 43.5 GHz units
•Table A-7, “Power Level Accuracy at 25 GHz (Preamplifier Off)” for 43.5 GHz units
•Table A-8, “Power Level Accuracy at 31 GHz (Preamplifier Off)” for 43.5 GHz units
•Table A-9, “Power Level Accuracy at 43 GHz (Preamplifier Off)” for 43.5 GHz units

Verification 2-3 Amplitude Accuracy
MS27201A MM PN: 10580-00482 Rev. A 2-7
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 A.
Equipment Required
•Anritsu MG3697C Synthesizer
•Anritsu V241C Power Splitter
•Anritsu 41V-10 Attenuator, Qty 2
•Anritsu 41V-20 Attenuator
•Rohde and Schwarz NRP67T Power Sensor
•Anritsu 3670V50A-2 Coaxial Cable, V(m) to V(f)
•Anritsu 34VKF50 Adapter, V(m) to K(f), for 43.5 GHz units
•Anritsu 34NK50 Adapter, K(m) to N(m), for 9 and 20 GHz units
•10 MHz Frequency Reference
Procedure
1. Connect the external 10 MHz Reference to both the MG3697C and MS27201A.
2. Connect the MG3697C RF Out to the input of the splitter.
3. Connect the NRP67T directly to one output of the splitter.
4. Connect 40 dB of attenuation to the other output of the splitter.
5. Connect the RF input of the MS27201A to the 40 dB attenuation.
6. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
7. Set the MS27201A parameters as follows:
•Reference Level: –40 dBm
•Attenuation Level: 0 dB
•Preamplifier: On
•Trace Menu:
•Detector Type: Peak
•Bandwidth Menu:
•RBW: 1 kHz
•VBW: 10 Hz
•Span: 10 kHz
8. Using the Rohde and Schwarz Power Viewer software, set the signal frequency to 10 kHz. Ensure the
MG3697C is not outputting any power, and zero the NRP67T sensor.
9. On the MG3697C, set the frequency to 10 kHz and adjust the power level so the NRP67T measures
–10.0 dBm. (The MG3697C should be approximately –4 dBm.)
10. On the MS27201A set the center frequency to 10 kHz and perform a peak search. Record the result in
Table A-10, “Power Level Accuracy (Preamplifier On)” on page A-6.
11. Repeat Step 8 through Step 10 for the remaining frequencies that apply to the unit being tested, in
Table A-10, “Power Level Accuracy (Preamplifier On)” on page A-6.
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

2-4 Single Side Band (SSB) Phase Noise Verification
2-8 PN: 10580-00482 Rev. A MS27201A MM
2-4 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 A.
Equipment Required
•Anritsu MG3697C
•Anritsu 3670V50A-2 Coaxial Cable, V(m) to V(f)
•Anritsu 34VKF50 Adapter, V(m) to K(f), for 43.5 GHz units
•Anritsu 34NK50 Adapter, K(m) to N(m), for 9 and 20 GHz units
•10 MHz Frequency Reference
Procedure
1. Connect the external 10 MHz Reference to both the MG3697C and MS27201A.
2. Connect the MG3697C RF Out to the MS27201A RF In.
3. Set the MG3697C to output frequency to 1.0 GHz.
4. Set the MG3697C to output power to –2 dBm.
5. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
6. Set the MS27201A parameters as follows:
•Reference Level: 0dBm
•Input Attenuation: 15 dB
•Preamplifier: Off
•Trace Menu:
•Detector Type: Peak
•Type: Average
•Averages: 3
•Bandwidth Menu:
•RBW: 1 kHz
•VBW: 3 Hz
•Sweep Points:551
7. 10 kHz and 100 kHz Offset Settings:
•Center Frequency: 1000.05 MHz
•Span: 110 kHz
8. In the Sweep menu, turn off Continuous Sweep, and choose Sweep to 3 and allow it to finish.
9. In the Marker menu, use the Peak Search menu to set Marker 1 to the peak at 1 GHz. Exit the Peak
Search menu and set the Marker Mode to Delta. Enter a frequency value of 10 kHz, so a marker is on the
peak at 1 GHz and the delta marker is 10 kHz away. Record the difference in level between the peak at
1 GHz and the noise level 10 kHz away at 1000.010 MHz in Table A-11, “Spectral Purity – SSB Phase
Noise Offset from 1 GHz” on page A-6. Then subtract another 30 dB and record this as the 10 kHz Offset
Measured Value reading in Table A-11 on page A-6.
For example: –80 dBc measured – 30 dB = –110 dBc/Hz
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

Verification 2-4 Single Side Band (SSB) Phase Noise
MS27201A MM PN: 10580-00482 Rev. A 2-9
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 – SSB
Phase Noise Offset from 1 GHz” on page A-6. Then subtract another 30 dB and record this as the
100 kHz Offset Measured Value reading in Table A-11 on page A-6.
For example: –80 dBc measured – 30 dB = –110 dBc/Hz
11. Change the Center Frequency to 1000.545 MHz and the Span to 1.1 MHz. Run the sweep of 3 averages
and allow it to finish. Using Delta Markers, measure the difference in level between the peak at 1 GHz
and the noise level 1 MHz away at 1001.0 MHz in Table A-11, “Spectral Purity – SSB Phase Noise Offset
from 1 GHz” on page A-6. Then subtract another 30 dB and record this as the 1 MHz Offset Measured
Value reading in Table A-11 on page A-6.
For example: –85 dBc measured – 30 dB = –115 dBc/Hz
12. Change the Center Frequency to 1005.495 MHz and the Span to 11 MHz. Run the sweep of 3 averages
and allow it to finish. Using Delta Markers, measure the difference in levels between the peak at 1 GHz
and the noise level 10 MHz away at 1010 MHz in Table A-11, “Spectral Purity – SSB Phase Noise Offset
from 1 GHz” on page A-6. Then subtract another 30 dB and record this as the 10 MHz Offset Measured
Value reading in Table A-11 on page A-6.
For example: –100 dBc measured –30 dB = –130 dBc/Hz

2-5 Second Harmonic Distortion Verification
2-10 PN: 10580-00482 Rev. A MS27201A MM
2-5 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 A.
Equipment Required
•Anritsu MG3692C Synthesizer
•Min-Circuits NLP-50 Low Pass Filter
•Anritsu 15NNF50-1.5C RF Cable
•Anritsu 34NN50A Adapter
•10 MHz Frequency Reference
•71693-R K(f) to N(f) Adapter, for 43.5 GHz units
•K(m) to N(f)
•N(f) to K(m)
Procedure
1. Connect the 10 MHz reference to the MG3692C and MS27201A.
2. Connect the output of the MG3692C to the input of the low pass filter and the output of the low pass filter
to the RF In of the MS27201A.
3. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
4. Set the MS27201A parameters as follows:
•Reference Level: –20 dBm
•Attenuation Level: 0dB
•Preamplifier: Off
•Bandwidth Menu:
•RBW: 1 kHz
•VBW: 10 Hz
•Span: 100 kHz
•Center frequency: 50.1 MHz
5. Set the MG3692C frequency to 50.1 MHz and adjust the level so the MS27201A shows –30 dBm at
50.1 MHz. Record this value in Table A-12, “Second Harmonic Distortion” on page A-7
6. Set the MS27201A Center Frequency to 100.2 MHz MHz, perform a peak search, and record this value in
Table A-12 on page A-7.
7. Subtract 50.1 MHz value from the 100.2 MHz value and record this as the Second Harmonic Distortion in
Table A-12 on page A-7.
For example, if the 50.1 MHz value is –30 dBm and the 100.2 MHz value is –90 dBm, then:
–90 dBm – (–30 dBm) = –60 dBc
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

Verification 2-6 Displayed Average Noise Level (DANL)
MS27201A MM PN: 10580-00482 Rev. A 2-11
2-6 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 A.
There are two procedures involved in verifying the DANL of MS27201A:
•“DANL – Preamplifier Off”
•“DANL – Preamplifier On”
DANL – Preamplifier Off
Use the following procedure to verify the Displayed Average Noise Level (DANL) of the MS27201A with
preamplifier off.
Equipment Required
•Anritsu 28N50-2 Termination, for 9 and 20 GHz units
•Anritsu 28KF50 Termination, for 43.5 GHz units
Procedure
1. Attach the Termination to the RF input of the MS27201A.
2. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
3. Set the MS27201A parameters as follows:
•Reference Level: –20 dBm
•Input Attenuation: 0dB
•Preamplifier: Off
•Sweep Points: 551
•Trace menu:
•Detector Type: RMS/Avg
•Bandwidth menu:
•RBW: 1 MHz
•VBW: 1 kHz
•VBW Type: Logarithmic
•Start Frequency: 10 MHz
•Stop Frequency to 4 GHz
4. Using the Sweep menu, turn off Continuous Sweep, and Sweep Once.
5. Using the Marker menu, choose Peak Search, subtract 60 dB from the measurement, and record the power
level in:
•For 9 and 20 GHz Units: Table A-13, “Displayed Average Noise Level (Preamplifier Off, for 9 and
20 GHz Units)” on page A-7
•For 43.5 GHz Units: Table A-14, “Displayed Average Noise Level (Preamplifier Off, for 43.5 GHz
Units)” on page A-7
6. Repeat Step 3 through Step 5 by changing the Start/Stop frequencies for the remaining frequency ranges
in Table A-13 on page A-7 or Table A-14 on page A-7.
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.

2-6 Displayed Average Noise Level (DANL) Verification
2-12 PN: 10580-00482 Rev. A MS27201A MM
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 A.
Equipment Required
•Anritsu 28N50-2 Termination, for 9 and 20 GHz units
•Anritsu 28KF50 Termination, for 43.5 GHz units
Procedure
1. Attach the Termination to the RF input of the MS27201A.
2. Set the MS27201A to Spectrum Analyzer mode and preset the instrument (PRESET > Preset Mode).
3. Set the MS27201A parameters as follows:
•Reference Level: –50 dBm
•Input Attenuation: 0dB
•Preamplifier: On
•Sweep Points: 551
•Trace Menu:
•Detector Type: RMS/Avg
•Bandwidth Menu:
•RBW: 1 MHz
•VBW: 1 kHz
•VBW Type: Logarithmic
•Start Frequency: 10 MHz
•Stop Frequency: 4 GHz
4. Using the Sweep Menu, turn off Continuous Sweep, and Sweep Once.
5. Using the Marker menu, choose Peak Search, subtract 60 dB from the measurement, and record the power
level in:
•For 9 and 20 GHz Units: Table A-15, “Displayed Average Noise Level (Preamplifier On, for 9 and
20 GHz Units)” on page A-8
•For 43.5 GHz Units: Table A-17, “Displayed Average Noise Level (Preamplifier On, for 43.5 GHz
Units)” on page A-9
6. Repeat Step 3 through Step 5 by changing the Start/Stop frequencies for the remaining frequency ranges
in Table A-15 on page A-8 or Table A-17 on page A-9.
Note Before continuing, allow a 30 minute warm-up for the internal circuitry to stabilize.