Anritsu MS27102A User manual

Maintenance Manual
Remote Spectrum Monitor
MS27102A, 9 kHz to 6 GHz
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
Part Number: 10580-00420
Revision: A
Published: October 2015
Copyright 2015 Anritsu Company

TRADEMARK ACKNOWLEDGMENTS
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and Visual Studio are all registered trademarks of Microsoft Corporation.
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MATLAB is a a registered trademark of The MathWorks Corporation.
NI is a trademark of the National Instruments Corporation.
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
Updates, if any, can be downloaded from the Documents area of the Anritsu Website at:
http://www.anritsu.com
For the latest service and sales contact information in your area, please visit:
http://www.anritsu.com/contact-us
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.

MS27102A MM PN: 10580-00420 Rev. A Safety-1
Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Company uses the
following symbols to indicate safety-related information. For your own safety, please read the information
carefully before operating the equipment.
Symbols Used in Manuals
Safety Symbols Used on Equipment and in Manuals
The following safety symbols are used inside or on the equipment near operation locations to provide
information about safety items and operation precautions. Ensure that you clearly understand the meanings of
the symbols and take the necessary precautions before operating the equipment. Some or all of the following
five symbols may or may not be used on all Anritsu equipment. In addition, there may be other labels attached
to products that are not shown in the diagrams in this manual.
Danger
This indicates a risk from a very dangerous condition or procedure that could result in
serious injury or death and possible loss related to equipment malfunction. Follow all
precautions and procedures to minimize this risk.
Warning This indicates a risk from a hazardous condition or procedure that could result in
light-to-severe injury or loss related to equipment malfunction. Follow all precautions
and procedures to minimize this risk.
Caution
This indicates a risk from a hazardous procedure that could result in loss related to
equipment malfunction. Follow all precautions and procedures to minimize this risk.
This indicates a prohibited operation. The prohibited operation is indicated symbolically
in or near the barred circle.
This indicates a compulsory safety precaution. The required operation is indicated
symbolically in or near the circle.
This indicates a warning or caution. The contents are indicated symbolically in or near
the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.

Safety-2 PN: 10580-00420 Rev. A MS27102A MM
For Safety
Warning Always refer to the operation manual when working near locations at which
the alert mark, shown on the left, is attached. If the operation, etc., is
performed without heeding the advice in the operation manual, there is a
risk of personal injury. In addition, the equipment performance may be
reduced.
Moreover, this alert mark is sometimes used with other marks and
descriptions indicating other dangers.
Warning
When supplying power to this equipment, connect the accessory 3-pin
power cord to a 3-pin grounded power outlet. If power is supplied without
grounding the equipment, there is a risk of receiving a severe or fatal
electric shock.
Warning
This equipment can not be repaired by the operator. Do not attempt to
remove the equipment covers or to disassemble internal components.
Only qualified service technicians with a knowledge of electrical fire and
shock hazards should service this equipment. There are high-voltage parts
in this equipment presenting a risk of severe injury or fatal electric shock to
untrained personnel. In addition, there is a risk of damage to precision
components.
Caution
Electrostatic Discharge (ESD) can damage the highly sensitive circuits in
the instrument. ESD is most likely to occur as test devices are being
connected to, or disconnected from, the instrument’s front and rear panel
ports and connectors. You can protect the instrument and test devices by
wearing a static-discharge wristband. Alternatively, you can ground
yourself to discharge any static charge by touching the outer chassis of the
grounded instrument before touching the instrument’s front and rear panel
ports and connectors. Avoid touching the test port center conductors
unless you are properly grounded and have eliminated the possibility of
static discharge.
Repair of damage that is found to be caused by electrostatic discharge is
not covered under warranty.

MS27102A MM PN: 10580-00420 Rev. A Contents-1
Table of Contents
Chapter 1—General Information
1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Anritsu Customer Service Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-4 Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2—MS27102A Verification
2-1 Frequency Accuracy Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Amplitude Accuracy Verification, 1-Port Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-3 Displayed Average Noise Level (DANL), 1-Port Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Chapter 3—MS27102A Option Verification
3-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Amplitude Accuracy Verification, 2-Port Instruments (Option 402). . . . . . . . . . . . . . . . . . . . . . 3-1
3-3 Displayed Average Noise Level (DANL), 2-Port Instruments (Option 402) . . . . . . . . . . . . . . . 3-3
Chapter 4—Assembly Replacement
4-1 Opening the MS27102A Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Main PCB Assembly Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-3 MUX PCB Replacement (Instruments with Option 402) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-4 MS27102A N Connector Port Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Chapter 5—Troubleshooting
5-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 Communication Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-3 Level Accuracy Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Appendix A—Test Records
A-1 Test Records for 1-Port MS27102A Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-2 Test Records for 2-Port MS27102A Verification (Option 402) . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Contents-2 PN: 10580-00420 Rev. A MS27102A MM

MS27102A MM PN: 10580-00420 Rev. A 1-1
Chapter 1 — General Information
1-1 Introduction
This manual provides maintenance instructions for the Anritsu Remote Spectrum Monitor, Model MS27102A.
This manual includes:
•General information including:
•List of recommended equipment to perform maintenance and verification testing (Table 1-1)
•Replaceable parts list (Table 1-2)
•Performance verification procedures:
•Chapter 2, “MS27102A Verification”
•Chapter 3, “MS27102A Option Verification”
•Assembly replacement and troubleshooting procedures:
•Chapter 4, “Assembly Replacement”
•Chapter 5, “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.
Familiarity with the basic operation of the MS27102A is assumed.
1-2 Anritsu Customer Service Centers
For the latest service and sales information in your area, please visit the following URL:
http://www.anritsu.com/contact-us
Choose a country for regional contact information.

1-3 Recommended Test Equipment General Information
1-2 PN: 10580-00420 Rev. A MS27102A MM
1-3 Recommended Test Equipment
Table 1-1 lists recommended test equipment for use in testing and maintaining the spectrum monitor.
Table 1-1. Recommended Test Equipment for MS27102A Maintenance and Verification
Equipment Critical Specification
Recommended
Manufacturer/Model
Synthesized Signal Generator Frequency: 0.1 Hz to 6 GHz,
Power Output: +16 dBm,
Step attenuator installed
Anritsu Model MG3692A/B/C, with
Options 2A, 3, 4, 22, 15xa
a.MG3692A models require Option 15 to achieve power of +16 dBm at 3.5 GHz. MG3692B models do not require Option 15 to
achieve power of +16 dBm at 3.5 GHz.
Power Meter Power Range: –70 dBm to +20 dBm Anritsu Model ML2438A
Power Sensor Frequency: 100 kHz to 6 GHz
Power Range: –30 dB to +20 dB
Anritsu Model SC7400
Frequency Reference Frequency: 10 MHz Symmetricom RubiSource T&M
Fixed Attenuator 10 dB Attenuation Aeroflex/Weinschel Model 44-10
Power Splitter Frequency: DC to 6 GHz Aeroflex/Weinschel Model 1870A
50 Ohm Termination Frequency: DC to 6 GHz Anritsu Model SM/PL-1
RF Coaxial Cable Frequency: DC to 18 GHz
N(m) to N(m), 50 ohm
Anritsu Model 15NN50-1.5C
Coaxial Cable BNC(m) to BNC(m), 50 ohm Anritsu Model 2000-1627-R
Adapter DC to 6 GHz, K(m) to N(f) Anritsu Model 34RKNF50
Adapter DC to 6 GHz, N(m) to N(m) Anritsu Model 34NN50A
M25 Port Tool Port 1 and Port 2 Replacement Tool Anritsu Model T4461
1/4 Inch Torque Wrench 15 in - lbf setting Any
Phillips Screw Driver #1 Phillips Head Any
8 mm Open Ended Wrench 8mm Any

General Information 1-4 Replaceable Parts
MS27102A MM PN: 10580-00420 Rev. A 1-3
1-4 Replaceable Parts
Table 1-2. List of Replaceable Parts
Part Number Description
ND82026 Main PCB Assembly
ND82027 MUX PCB Assembly, for 2-port instruments
ND82030 Main/MUX PCB Assembly, for 2-port instruments
3-2000-1828 IP67 Chassis
(includes top and bottom covers, plugs, internal Ethernet, DC and GPS cables)
3-790-775 IP67 Top Cover
3-790-774 IP67 Bottom Enclosure
3-790-777 RF Port Plug (single plug on back of bottom enclosure)
3-513-140 RF In Port, N(F) to SMA(F) Adapter
3-75261-5 10 MHz Reference Cable (BNC to MCX)
3-806-328 GPS Cable (SMA to MCX)
3-806-326 DC Cable (Connects SPA to DC connector on chassis)
3-81592 Port 1 to SPA Cable, for 1-port instruments
3-81593 Port 1 to SPA Cable, for 2-port instruments
3-81594 Port 2 to SPA Cable, for 2-port instruments
3-81591 SPA to MUX Cable, SMA to SMA, for 2-port instruments
3-67367 SPA to MUX Interface Cable (USB Type A to 1x5)
3-81597 EMI Foam Block, 120 mm x 265 mm x 31 mm, for 2-port instruments
3-806-327 Ethernet Cable Internal, 200 mm
3-553-560 Cap with Chain, N(F) Cap
3-553-561 Cap with Chain, SMA(F) Cap
3-81341 Bracket for BNC Connector of 10 MHz Reference Input
3-81599-1 Conductive Foam, 152 mm x 15 mm x 15 mm
3-81599-2 Conductive Foam, 228 mm x 15 mm x 15 mm
3-790-780 Bracket, External Mount for IP67 Chassis
3-81595 Mounting Bracket Extension Set for IP67 Chassis
3-553-559 CAT6 Cable Seal for cable OD 4.5 mm to 6.5 mm. Includes seal nut, clip, seal, body, and
gasket. Allows sealed connection to IP67 chassis
3-553-558 Seal for cable OD 6.6 mm to 8.6 mm. This is seal only and replaces seal from 3-553-559.
If nut, clip, body, and gasket are needed, order both 3-553-558 and 3-553-559.
3-510-155 Power Connector Housing. Includes seal nut, clip, seal, body, locknut, housing, and
O-ring. This allows the input power cables to be connected to this part, and then
connected to the IP67 chassis.
3-553-557 CAT6 Module, without internal jumper. This is the internal RJ45 connector allowing an
external Ethernet cable to connect to the IP67 chassis.

1-4 Replaceable Parts General Information
1-4 PN: 10580-00420 Rev. A MS27102A MM