Anritsu MS27201A User manual

Part Number: 10580-00480
Revision: B
Published: July 2023
Copyright 2023 Anritsu Company
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
User Guide
Remote Spectrum Monitor MS27201A
High-Performance RF Spectrum Monitor

Front-2 PN: 10580-00480 Rev. B MS27201A UG
Unauthorized Use or Disclosure
Anritsu Company has prepared the product user documentation for use by Anritsu Company personnel and
customers as a guide for the proper installation, operation, and maintenance of Anritsu Company equipment and
software programs. The drawings, specifications, and information contained therein are the property of Anritsu
Company, and any unauthorized use 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.
Export Management
The Anritsu products identified herein and their respective 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 these products or
any of their 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 must be broken or shredded to such a degree
that they cannot be unlawfully used for military purposes.

MS27201A UG PN: 10580-00480 Rev. B Contents-1
Table of Contents
Chapter 1—General Information
1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-2 Instrument Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Available Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 Instrument Care and Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Ventilation and Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Connector Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
ESD Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-4 Calibration and Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-5 Contacting Anritsu for Sales and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Chapter 2—Instrument Overview
2-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Connector Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3 Turning On the MS27201A RSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4 MS27201A PC Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Vision Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-5 PC Requirements for MS27201A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-7 Connecting to the MS27201A or Localhost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-8 GUI Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Common GUI Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Data Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Scroll Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2-9 Title Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2-10 Selecting the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2-11 System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Contents-2 PN: 10580-00480 Rev. B MS27201A UG
Table of Contents (Continued)
2-12 Settings Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Display Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Network Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Ethernet Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
GNSS (GPS) Settings (Option 31). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Screenshot Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Language Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Date Time Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Port Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Options Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Advanced Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Reset Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
2-13 Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
FTP Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
Remote Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
2-14 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
Event Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
Service Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
2-15 Tools Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
IQ STREAMING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
DISCOVERY TOOL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
PDF REPORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
2-16 Software Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Installing the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Appendix A—Notification Messages and Troubleshooting
A-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-2 Self-Test Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-3 Informational Notifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
A-4 Warning Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
A-5 Error Notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
A-6 UDP Discovery Tool Firewall Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16
A-7 System Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-18
Appendix B—Software Option Upgrades
B-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B-2 Exporting a Software Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B-3 Importing Software License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

MS27201A UG PN: 10580-00480 Rev. B 1-1
Chapter 1 — General Information
1-1 Introduction
The MS27201A Remote Spectrum Monitor (RSM) User Guide is part of a set of manuals that cover all of the
instrument functions and their use. This manual covers the instrument overview, system functions, and other
common features, along with a brief guide to basic measurement concepts and setups. Most instrument
operations are covered in specific chapters of this manual as listed below. Remote programming is covered in
the programming manual. Additionally, the MS27201A RSM offers a remote PC software that replicates the
instrument user interface on your PC screen and allows network connection to an instrument or the ability to
recall data and perform on-screen measurement analysis without a connection to an instrument (refer to
“MS27201A PC Software” on page 2-4).
Before You Begin
•Read the Remote Spectrum Monitor Product Information, Compliance, and Safety Guide (PN:
10100-00064) for important safety, legal, and regulatory notices before operating the equipment.
Additional Documentation
For additional information and literature covering your product, visit the product page of your instrument and
select the Library tab:
https://www.anritsu.com/en-US/test-measurement/products/ms2720xa
For more information and literature on Vision Spectrum Monitoring Application Software visit the product
page and select the Library tab:
https://www.anritsu.com/en-us/test-measurement/products/mx280001a
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
10580-00418 Vision™ MX280001A Spectrum Monitoring Application Software User Guide
10580-00447
Field Master Series Spectrum Analyzer Measurement Guide
Zero Span IF Output (Option 89)
Gated Sweep (Option 90)
AM/FM Modulation Measurement (Option 509)
10580-00448 Field Master Series Real-Time Spectrum Analyzer (RTSA) Measurement Guide
(Option 199)
10580-00449
Field Master Series 5GNR Measurement Guide (Option 888)
GNSS Receiver (Option 31)
Gated Sweep (Option 90)
10580-00450 Field Master Series LTE Signal Analyzer Measurement Guide (Option 883)
Gated Sweep (Option 90)
10580-00451 Field Master Series Pulse Analyzer Measurement Guide (Option 421)
10580-00490 Field Master Series IQ Capture/Streaming Measurement Guide (Options 124/126 and
Options 125/127)

1-2 Instrument Description General Information
1-2 PN: 10580-00480 Rev. B MS27201A UG
Document Conventions
The following conventions are used throughout the MS27201A documentation set.
Instrument Identification
When identifying a frequency option for the MS27201A, that option number is appended after the model
number; example: MS27201A-0709.
User Interface
The MS27201A user interface consists of menus, buttons, toolbars, and dialog boxes.
User Interface Navigation
Elements in navigation paths are separated as follows: MARKER > PEAK SEARCH > NEXT PEAK.
1-2 Instrument Description
The MS27201A RSM is a synthesizer-based spectrum monitor that provides quick and accurate measurement
results. The instrument is designed for monitoring, measuring, and analyzing signal environments.
Measurements can easily be made by using the main instrument functions: frequency, span, amplitude, and
bandwidth. A full range of marker capabilities (such as peak, center, and delta functions) are provided for
faster, more comprehensive analysis of displayed signals. Upper and lower multi-segmented limit lines are
available to create quick, simple pass/fail measurements.
Time and date stamping of measurement data is automatic. The internal memory provides for the storage and
recall of up to 1000 measurement setups and up to 1000 traces. Measurements and setups can be stored
internally on the instrument or on a USB memory device for later recall.
Available Models
Table 1-2 lists the frequency options available with the MS27201A RSM.
Note Not all after-market USB memory devices are compatible with Remote Spectrum Monitor. The USB
memory device must contain a single partition using FAT32, exFAT, NTFS and ext4 file formats.
Table 1-2. Remote Spectrum Monitor Frequency Options
Model Frequency Range
MS27201A-0709 Remote Spectrum Monitor, 9 kHz to 9 GHz
MS27201A-0714 Remote Spectrum Monitor, 9 kHz to 14 GHz
MS27201A-0720 Remote Spectrum Monitor, 9 kHz to 20 GHz
MS27201A-0726 Remote Spectrum Monitor, 9 kHz to 26.5 GHz
MS27201A-0732 Remote Spectrum Monitor, 9 kHz to 32 GHz
MS27201A-0743 Remote Spectrum Monitor, 9 kHz to 43.5 GHz
MS27201A-0754 Remote Spectrum Monitor, 9 kHz to 54 GHz

General Information 1-2 Instrument Description
MS27201A UG PN: 10580-00480 Rev. B 1-3
Available Options
Available options for the Remote Spectrum Monitor are listed in Table 1-3.
Table 1-3. Available Options
Option Description
MS27201A-0031 GNSS Receiver (requires external GPS antenna)
MS27201A-0089 Zero Span IF Output
MS27201A-0090 Gated Sweep
MS27201A-0104 110 MHz Analysis Bandwidth
MS27201A-0124 IQ Waveform Capture
MS27201A-0125 IQ Waveform Streaming (requires Option 124)
MS27201A-0126 IQ Waveform Capture (non-export-controlled)
MS27201A-0127 IQ Waveform Streaming (non-export-controlled) (requires Option 126)
MS27201A-0128 Vector Signal Analysis enabled (requires Option 124 or 26)
MS27201A-0199 Real-Time Spectrum Analyzer
MS27201A-0400 Vision Monitor enabled
MS27201A-0407 Vision High-Speed Port Scanner enabled
MS27201A-0421 Pulse Analyzer
MS27201A-0509 AM/FM Modulation Measurement
MS27201A-0883 LTE FDD/TDD Measurements (requires GNSS Receiver MS27201A-0031)
MS27201A-0888 5GNR Downlink Measurements (requires GNSS Receiver MS27201A-0031)
MS27201A-xxxx-0097 Accredited Calibration to ISO17025 and ANSI/NCSL Z540-1 (xxxx is the frequency
Option number)
MS27201A-xxxx-0098 Standard Calibration to ISO17025 and ANSI/NCSL Z540-1 (xxxx is the frequency Option
number)
MS27201A-xxxx-0099 Premium Calibration to ISO17025 and ANSI/NCSL Z540-1 plus test data
(xxxx is the frequency Option number)

1-3 Instrument Care and Preventive Maintenance General Information
1-4 PN: 10580-00480 Rev. B MS27201A UG
1-3 Instrument Care and Preventive Maintenance
Instrument care and preventive maintenance consist of proper operation in a suitable environment, occasional
cleaning of the instrument, and inspecting and cleaning the RF connectors and all accessories before use.
Clean the instrument with a soft, lint-free cloth dampened with water or water and a mild cleaning solution.
Ventilation and Cooling
The Remote Spectrum Monitor provides active cooling of the internal components to prevent damage from
overheating. The airflow vents on the edges and bottom of the instrument must be kept clear and unobstructed
while the instrument is powered on. When using the Remote Spectrum Monitor on a desktop, bench or the
instrument can be placed flat on its back to facilitate increased airflow.
Connector Care
Clean the RF connectors and center pins with a cotton swab dampened with denatured alcohol. Visually
inspect the connectors. The fingers of the N(f) and K(f) connectors and the pins of the N(m) and K(m)
connectors should be unbroken and uniform in appearance. If you are unsure whether the connectors are
undamaged, gauge the connectors to confirm that the dimensions are correct. Visually inspect the test port
cable(s). The test port cable should be uniform in appearance and not stretched, kinked, dented, or broken.
To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the Type-N and Type-K
connectors. The recommended torque is 12 lbf·in to 15 lbf·in (1.36 N·m to 1.70 N·m). Inadequate torque
settings can affect measurement accuracy. Over-tightening connectors can damage the cable, the connector,
the instrument, or all of these items.
Visually inspect connectors for general wear, cleanliness, and for damage such as bent pins or connector rings.
Repair or replace damaged connectors immediately. Dirty connectors can limit the accuracy of your
measurements. Damaged connectors can harm the instrument. Connection of cables carrying an electrostatic
potential, excess power, or excess voltage can damage the connector, the instrument, or both.
Connecting Procedure
1. Carefully align the connectors. The male connector center pin must slip concentrically into the contact
fingers of the female connector.
2. To tighten, turn the connector nut, not the connector body. Major damage can occur to the center
conductor and to the outer conductor if the connector body is twisted.
3. If you use a torque wrench, initially tighten by hand so that approximately 1/8 turn or 45 degrees of
rotation remains for the final tightening with the torque wrench.
4. Relieve any side pressure on the connection (such as from long or heavy cables) in order to assure
consistent torque. Use an open-end wrench to keep the connector body from turning while tightening
with the torque wrench. Do not over-torque the connector.
Disconnecting Procedure
1. If a wrench is needed, use an open-end wrench to keep the connector body from turning while loosening
with a second wrench.
2. Complete the disconnection by hand, turning only the connector nut.
3. Pull the connectors straight apart without twisting or bending.
Caution To avoid damaging the case, do not use solvents or abrasive cleaners.
Caution Do not operate or store the Remote Spectrum Monitor in extreme environments. Refer to the
instrument Technical Data Sheet for the specified operating and storage conditions.

General Information 1-4 Calibration and Verification
MS27201A UG PN: 10580-00480 Rev. B 1-5
ESD Caution
The Remote Spectrum Monitor, like other high performance instruments, is susceptible to electrostatic
discharge (ESD) damage. Coaxial cables and antennas often build up a static charge, which (if allowed to
discharge by connecting directly to the instrument without discharging the static charge) may damage the
Remote Spectrum Monitor input circuitry. Instrument operators must be aware of the potential for ESD
damage and take all necessary precautions.
Operators should exercise practices outlined within industry standards such as JEDEC-625 (EIA-625),
MIL-HDBK-263, and MIL-STD-1686, which pertain to ESD and ESDS devices, equipment, and practices.
Because these apply to the Remote Spectrum Monitor, it is recommended that any static charges that may be
present be dissipated before connecting coaxial cables or antennas to the instrument. This may be as simple as
temporarily attaching a short or load device to the cable or antenna prior to attaching to the Remote Spectrum
Monitor. It is important to remember that the operator may also carry a static charge that can cause damage.
Following the practices outlined in the above standards will ensure a safe environment for both personnel and
equipment.
1-4 Calibration and Verification
The Remote Spectrum Monitor comes fully calibrated from the factory and there are no field-adjustable
components. Anritsu recommends annual calibration and performance verification by local Anritsu service
centers.
1-5 Contacting Anritsu for Sales and Service
To contact Anritsu, visit the following URL and select the services in your region:
http://www.anritsu.com/contact-us

1-5 Contacting Anritsu for Sales and Service General Information
1-6 PN: 10580-00480 Rev. B MS27201A UG

MS27201A UG PN: 10580-00480 Rev. B 2-1
Chapter 2 — Instrument Overview
2-1 Introduction
This chapter provides an overview of the Anritsu MS27201A RSM. It describes the instrument hardware
features, general system settings and instrument configurations, and the connector panels. The Remote
Spectrum Monitor uses a remote PC for the user interface. The interface menus can vary depending on the
current measurement configuration, installed options, and selected instrument function. For detailed
information on the instrument’s user interface and functions, refer to spectrum analyzer measurement guide
(PN: 10580-00447).
2-2 Connector Panels
The MS27201A Remote Spectrum Monitor uses two connector panels to provide for all physical IO. These
panels use a variety of connector types intended for their purpose.
RF Connectors
The main RF input connector can be Type N or Type K, depending on the frequency option that is installed.
These are ruggedized 50 connectors. Type N connectors are female and Type K are male. Additional IO is
provided with SMA style connectors. The SMA connectors are 50 female connectors.
Caution
To prevent damage to your instrument, do not use pliers or a plain wrench to tighten the connectors.
Do not overtighten the connector. The recommended torque for Type K is 8 lbf·in (0.9 N·m or
90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).

2-2 Connector Panels Instrument Overview
2-2 PN: 10580-00480 Rev. B MS27201A UG
Front Panel
Figure 2-1 shows the front connector panel on the MS27201A.
1. RF In Port
This is a 50 ruggedized connector of the following:
•Type N female with options 709 and 720
•Type K male with option 743
Maximum Input: ±50 VDC, +23 dBm, +13 dBm with Preamp On
To prevent damage to your instrument, do not try to mate incorrect connector types or use pliers or a plain
wrench to tighten the connector. Do not overtighten the connector. The recommended torque for Type K is
8 lbf·in (0.9 N·m or 90 N·cm). The recommended torque for Type N is 12 lbf·in (1.35 N·m or 135 N·cm).
2. Status Indicator
The status indicator illuminates when power is applied to the instrument.
3. Data Out Port
The Data Out port is used for IQ Streaming. Refer to IQ Capture/Streaming Measurement Guide (PN:
10580-00490) for detailed information. This is a multi-purpose, hot pluggable input/output (I/O) interface.
4. USB 3.0 Interface – Type A
The Remote Spectrum Monitor has two Type A USB connectors that accept USB storage devices for saving
measurements, setup data, and screen images. To ensure the device or it’s data does not become corrupted,
click the eject icon to eject (unmount) the USB device before it is unplugged from the USB port (see
Section 2-9 “Title Bar” on page 2-15).
5. GPS Antenna Connector
The GPS antenna connection on the Remote Spectrum Monitor is type SMA female. This connector also
provides 5.0/3.3 VDC for an active GPS antenna.
6. Bias Voltage
The bias voltage connection is type SMA female. The power supply is set up to provide 1 V to 34 V with a
resolution of 0.1 V. The maximum current is 1 A, but with at total maximum power of 15 W.
Figure 2-1. Front Panel Connectors
1
910 2345678

Instrument Overview 2-2 Connector Panels
MS27201A UG PN: 10580-00480 Rev. B 2-3
7. Trigger In/Out
A TTL signal that is applied to the external trigger 50 SMA connector causes a single sweep to occur. In
spectrum analysis, triggering is generally used in zero span, and triggering occurs on the rising edge of the
signal. After the sweep is complete, the resultant trace is displayed until the next trigger signal arrives.
8. Trigger In/Out / Ref Out (10 MHz)
This port can be configured as a trigger in/out as above or as a reference output. The reference output port is a
50 SMA female connector that provides 10 MHz at approximately –7 dBm to 0 dBm.
9. Ref In
The external reference input port is a 50 SMA connector that provides for input of an external frequency
reference. Refer to your technical data sheet for valid frequencies. The instrument automatically selects the
frequency reference in the following order of priority: external, GPS, then the internal time base.
10. IF Out
This 50 SMA connector provides internal IF output. The nominal frequency range is 325 MHz with
FFT capture bandwidth ≤32 MHz and 300 MHz with FFT capture bandwidth = 100 MHz. The nominal
RF output level is –4 dBm with a 10 MHz, –20 dBm input, and with 0 dB input attenuation and preamp off.
The spectrum can be inverted in certain RF input bands.
Rear Panel
Figure 2-2 shows the real connector panel on the MS27201A.
1. External Power
This is a 2.5 mm by 5.5 mm barrel connector, 14-16 VDC, 5 A, center positive, used to power the instrument.
Refer to “Turning On the MS27201A RSM” on page 2-4.
2. LAN Connection
The RJ-45 connector is used to connect the Remote Spectrum Monitor to a local area network or directly to a
PC with an Ethernet crossover cable. See “Ethernet Connection” on page 2-24 for more details.
Figure 2-2. Real Panel Connectors
Warning
When using the AC-DC Adapter, always use a three-wire power cable that is connected to a
three-wire power line outlet. If power is supplied without grounding the equipment in this manner, the
user is at risk of receiving a severe or fatal electric shock.
12354

2-3 Turning On the MS27201A RSM Instrument Overview
2-4 PN: 10580-00480 Rev. B MS27201A UG
3. Service Port
The service port is for Anritsu customer service use only.
4. Cooling Fan
The cooling fan ventilates the internal heat from the instrument. Keep the fan inlet and exhaust ports clear of
obstructions at all times for proper ventilation and cooling of the instrument.
5. Security Lock
The security lock slot accepts standard laptop cable locks.
2-3 Turning On the MS27201A RSM
The Anritsu MS27201A RSM is operated from a 15 VDC source connected to the rear panel. This can be
achieved with either the Anritsu AC-DC adapter or the automotive power adapter, which can be purchased as
an optional accessory. Refer to the instrument Technical Data Sheet for more options and accessories.
The Remote Spectrum Monitor automatically turns on when power is applied to the rear panel power input
port and takes approximately 60 seconds to completely power-up and to load the instrument software. At the
completion of this process, the instrument is ready for use.
2-4 MS27201A PC Software
The MS27201A PC software provides remote access to a network connected instrument and displays the
MS27201A user interface, instrument controls, and live measurement data on the computer screen. The
software also allows you to load measurement and setup data from saved files and then perform measurement
analysis on the recalled traces, even when instrument hardware is not available or is not connected to the PC
by using the localhost (refer to “Connecting to the MS27201A or Localhost” on page 2-7). The user interface
provides the same functionality when an instrument is connected with the exception that file operations will
interface with the PC file system rather than on the instrument, and save on event operations will be saved to
the instrument memory (refer to “Files” on page 2-36).
Connecting to the localhost is like connecting to an instrument so there is no expectation of carrying over
settings or trace data from one to the other. The localhost will include option controlled functionality with most
options automatically enabled (refer to “GUI Overview” on page 2-8).
Caution
When using the Automotive Power Adapter, always verify that the supply is rated for a minimum of
75 watts @ 15 VDC, and that the socket is clear of any dirt or debris. If the adapter plug becomes hot
to touch during operation, discontinue use immediately.
Note Keep the fan inlet and exhaust ports clear of obstructions at all times for proper ventilation and
cooling of the instrument.

Instrument Overview 2-5 PC Requirements for MS27201A
MS27201A UG PN: 10580-00480 Rev. B 2-5
Vision Monitor
Vision Monitor is a PC user interface for monitoring remote spectrum activity. Measurement data is provided
in a variety of formats including spectrum trace data, spectrograms, tables and plots. Real-time spectrum
measurements can be accessed from anywhere in the network where multiple monitors are deployed.
The Vision Monitor application is fully automated. Measurements can be captured and periodically uploaded to
a database for further processing. Depending on need and storage capacity, users can store spectrum history
over many months or years.
All spectrum measurement databases are searchable, allowing the user to quickly locate patterns of signal
activity relevant to an investigation. The spectrum history can also potentially be used in legal proceedings for
documenting illegal or unlicensed broadcast activity. Other functions provided by Vision Monitor include the
following:
•Management functions for all remote spectrum monitors deployed
•Threshold and trace mask settings for alarm generation
•Reporting on spectrum integrity on a daily or weekly basis
•Visualization capability for probe positions using Google Maps™ or OpenStreetMap™
•Control capabilities for each spectrum monitor probe
•Alarm reporting showing location on map where violation occurred
•Email alerts
•Signal ID for Broadcasters
For more information and literature on Vision Spectrum Monitoring Application Software visit the product
page and select the Library tab:
https://www.anritsu.com/en-us/test-measurement/products/mx280001a
2-5 PC Requirements for MS27201A
Minimum computer requirements are listed below:
•Intel Core i5 or higher processor
•8 GB RAM
•Windows 10, 64-bit
•1 GB disk space
•Open GL (ES) 2.0 support
•Display resolution 1280 x 800
•Ethernet cable (for connecting to an MS27201A instrument)

2-6 Installation Instrument Overview
2-6 PN: 10580-00480 Rev. B MS27201A UG
2-6 Installation
1. Download the MS27201A software from the product page:
http://www.anritsu.com/en-US/test-measurement/products/ms2720xa
2. Launch the MS27201A executable file and follow the on-screen instructions after selecting YES on the
User Account Control dialog box.
Figure 2-3. MS27201A Installation

Instrument Overview 2-7 Connecting to the MS27201A or Localhost
MS27201A UG PN: 10580-00480 Rev. B 2-7
2-7 Connecting to the MS27201A or Localhost
Connecting to a networked instrument or to the localhost is established via the System menu. Insert the USB
memory device into the instrument and wait for about 10 seconds. Insert the USB memory device onto a PC,
then open the ip.txt file and copy the IP address in the HOSTNAME/IP ADDRESS field on the MS27201A
software. Otherwise use the static IP address (10.0.0.2) that is shipped with the unit.
Refer to Section A-7 “System Override” on page A-18 if the instrument does not respond to SCPI commands
and needs to be reset remotely.
-The System menu identifies the instrument model and serial number.
HOSTNAME/IP ADDRESS: This field is used to specify the IP address or
hostname of an instrument that is connected to the network.
When Use local (localhost) is toggled on, the software will connect locally to
provide some UI functionality.
Note that some of the system menus have limited functionality when the software
is connected to the localhost. When connected to an instrument, refer to “System
Menu” on page 2-17.
SYSTEM INFORMATION: Displays information about the instrument and
software.
SETTINGS: Provides access to setting the display color theme and screenshot
capture settings (refer to “Display Settings” on page 2-19).
FILES: Opens the Windows file explorer. Refer to “Files” on page 2-36.
DIAGNOSTICS: Opens “Remote Files” on page 2-37
TOOLS: Opens the “Tools Menu” on page 2-40.
SYSTEM POWER: Opens a dialog to RESTART or POWER OFF the instrument.

2-8 GUI Overview Instrument Overview
2-8 PN: 10580-00480 Rev. B MS27201A UG
2-8 GUI Overview
The MS27201A Remote Spectrum Monitor software controls all instrument functions. The software runs on a
user-supplied PC. The figure below identifies the main display areas, which are each described in more detail
later in this chapter.
1. The system menu provides quick access to the system settings, measurement mode selection and informational
dialogs.
2. 9-dot icon provides access for selecting the analyzers.
3. The status and trace panel is used to show common settings and controls, and to provide trace and cursor
information. The information displayed on this panel depends on the current measurement and view settings.
Refer to the appropriate chapter in this guide for information about this panel.
4. Menus are used to configure measurement settings such as frequency, amplitude, and bandwidth, and to
enable measurement modes such as OBW, ACP, and SEM measurements and views such as Normal and
Spectrogram views.
5. The main menu provides access to setting menus and other instrument controls.
6. The upper area typically displays graphical data such as spectrum trace and spectrogram plots. The lower area
typically displays tabular measurement data such as marker data, or other measurement data depending on the
selected measurement.
Figure 2-4. GUI Overview (sample display elements)
1
3
2
4
6

Instrument Overview 2-8 GUI Overview
MS27201A UG PN: 10580-00480 Rev. B 2-9
Common GUI Controls
The following lists common controls that you will encounter when working with the Remote Spectrum Monitor.
The 3-line icon provides quick access to system information, settings, file
management, and built-in diagnostic tools. Refer to Section 2-11 “System Menu”
on page 2-17.
The 9-dot icon provides access for selecting the analyzers. Refer to
Section 2-10 “Selecting the Analyzer” on page 2-16
The camera icon will capture a screen image and save it in the selected directory
location of the PC. Refer to “Screenshot Setup” on page 2-28.
The notification icon provides access to informational and error messages. If
displayed, the number indicates the number of notifications. Refer to “Notifications”
on page 2-18 and Appendix A, “Notification Messages and Troubleshooting”.
The USB eject icon is displayed when the instrument detects one or more USB
devices. Selecting this icon ejects the USB device, or presents a dialog to select
which USB device to eject when more than one device is detected.
The software update icon is displayed when the instrument detects a valid software
package. Selecting this icon opens an updated dialog to select the software to
install. Refer to Section 2-16 “Software Update” on page 2-47.
The local host icon is displayed only on the MS27201A PC application when
connected to the localhost instead of an instrument. The icon is not functional.
Refer to “MS27201A PC Software” on page 2-4.
The GPS icon shows connection status (no connection, no fix, good fix, using last
good fix). Selecting the icon opens the GPS/GNSS settings menu. Refer to “GNSS
(GPS) Settings (Option 31)” on page 2-26.
The close icon is used to close menus and other dialogs.
The chevron will expand and collapse the status and table displays. A similar
chevron on the virtual keyboard may be for capital letters or to scroll through key
sets.
Toggle icon will enable and disable the feature. When highlighted in blue, the item
is enabled.
The drop-down icon exposes a list of items from which to choose.
The refresh icon will restart a process, such as a sweep or averaging count.
The edit icon allows editing of a feature or label.
The enter icon accepts an entry. A similar icon is found on menu buttons to indicate
an additional menu.
Select the padlock icon next to center frequency on the graticule to change the
frequency by dragging, when using a touch-screen enabled PC. Touch the padlock
icon next to SPAN to change the span by pinching, when using a touch-screen
enabled PC. You can toggle on DRAG and PINCH options by selecting
GESTURES in Frequency menu. Refer to GESTURES menu in the Field Master
Series spectrum analyzer measurement guide (10580-00447).
Reference Level padlock icon by default, locks the reference level that is
accidentally prone to swiping when using a touch-screen enabled PC.
Shortcut icon used to create a shortcut of a desired application from current
settings or an existing setup file.
Figure 2-5. Common GUI Controls

2-8 GUI Overview Instrument Overview
2-10 PN: 10580-00480 Rev. B MS27201A UG
Data Entry
User input can be in the form of numeric values for instrument or measurement settings, selected values from
a preset list, or alphanumeric text when entering file names, for example. To view or change a parameter
value, access the appropriate menu or control, then enter data using menus.
Invalid Entries
When setting parameters or entering other types of data, if an entry is out of range or is otherwise invalid,
Remote Spectrum Monitor will shade the background display and may provide a message indicating a valid
range. In this case, clear or cancel the entry and enter a valid value or change the units by using either the
drop-down selection next to the data entry window, or with the unit terminators to the left of the keypad.
Numeric Values
To modify a numeric parameter setting that is displayed on a menu or annotated field, click the item to make it
active and to display the numeric keypad data entry control and enter the new value.
The keypad typically provides controls to:
•Enter new values directly, such as frequency entries in Hz, kHz, MHz, or
GHz. There are two places on the keypad to enter unit terminators when
applicable, on left side pop-out that occurs as frequency keypad entries are
selected, or on the top right corner drop-down of the entry field.
•Drag a parameter value within its settable range using a sliding control.
•Increment the parameter value up or down. At each end of the slider are plus
(+) and minus (–) controls that increment the parameter value. Most
parameters have a fixed increment, such as bandwidth that follows a 1:3:10
sequence and span that follows a 1:2:5:10 sequence. In the case of
frequency, you can set a custom frequency step increment value. Once the
entry is complete, click the desired unit or click ACCEPT to complete the
entry.
•Set the parameter to the maximum or minimum possible value.
•CLEAR the entire entry.
•Left arrow to backspace and delete the entry
•CANCEL to terminate any entries made for that particular setting. Note that
clicking the "X" to close the keypad is the same as clicking cancel. Selecting
CANCEL will restore settings back to the state they were in before the
keypad opened, even if changes from the +/- controls are already reflected
in the data display.
•ACCEPT to operate with the settings displayed on the keypad.
Figure 2-6. Menu Keypads