Anritsu VNA Master MS203 A Series User manual

Maintenance Manual
VNA Master
Model MS203xA
Vector Network Analyzer
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
P/N: 10580-00168
Revision: B
Printed: December 2008
Copyright 2008 Anritsu Company

WARRANTY
The Anritsu product(s) listed on the title page is (are) warranted against defects in materials and workmanship for
one year from the date of shipment.
Anritsu’s obligation covers repairing or replacing products which prove to be defective during the warranty period.
Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs. Obligation is
limited to the original purchaser. Anritsu is not liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to Anritsu connectors that have failed due to normal wear. Also, the warranty
does not apply to defects resulting from improper or inadequate maintenance by the Buyer, unauthorized
modification or misuse, or operation outside of the environmental specifications of the product. No other warranty is
expressed or implied, and the remedies provided herein are the Buyer’s sole and exclusive remedies.
DISCLAIMER OF WARRANTY
DISCLAIMER OF WARRANTIES. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, ANRITSU
COMPANY AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH REGARD TO THE SOFTWARE PRODUCT. THE USER ASSUMES THE ENTIRE
RISK OF USING THE PROGRAM. ANY LIABILITY OF PROVIDER OR MANUFACTURER WILL BE LIMITED
EXCLUSIVELY TO PRODUCT REPLACEMENT.
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, IN NO EVENT SHALL ANRITSU COMPANY OR ITS SUPPLIERS BE LIABLE FOR ANY
SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING,
WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS
OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR
INABILITY TO USE THE SOFTWARE PRODUCTS, EVEN IF ANRITSU COMPANY HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW
THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE
ABOVE LIMITATION MAY NOT APPLY TO YOU.
TRADEMARK ACKNOWLEDGMENTS
VNA Master is a trademark of 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
Updates, if any, can be downloaded from the Documents area of the Anritsu web site at:
http://www.us.anritsu.com

CE Conformity Marking
Anritsu affixes the CE Conformity marking onto its conforming products in accordance with Council Directives
of The Council Of The European Communities in order to indicate that these products conform to the EMC and
LVD directive of the European Union (EU).
C-tick Conformity Marking
Anritsu affixes the C-tick marking onto its conforming products in accordance with the electromagnetic
compliance regulations of Australia and New Zealand in order to indicate that these products conform to the
EMC regulations of Australia and New Zealand.
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.
Mercury Notification
This product uses an LCD backlight lamp that contains mercury. Disposal may be regulated due to
environmental considerations. Please contact your local authorities or, within the United States, the
Electronics Industries Alliance (www.eiae.org) for disposal or recycling information.

MS203xA 10580-00168 Revision B 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.
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.
Danger
This indicates a very dangerous procedure that could result in serious
injury or death, and possible loss related to equipment malfunction, if not
performed properly.
Warning This indicates a hazardous procedure that could result in light-to-severe
injury or loss related to equipment malfunction, if proper precautions are
not taken.
Caution
This indicates a hazardous procedure that could result in loss related to
equipment malfunction if proper precautions are not taken.

Safety-2 10580-00168 Revision B MS203xA
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 a grounded 3-pin outlet is
not available, use a conversion adapter and ground the green wire, or
connect the frame ground on the rear panel of the equipment to ground. 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.
Warning
Use two or more people to lift and move this equipment, or use an
equipment cart. There is a risk of back injury if this equipment is lifted by
one person.
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.

MS203xA 10580-00168 Revision B Contents-1
Table of Contents
Chapter 1—General Information
1-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Required Test Equipment for Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-3 Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2—Performance Verification
2-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-3 Spectrum Analyzer Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Spectrum Analyzer RF Input VSWR Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Spectrum Analyzer Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Spectrum Analyzer Internal Reference Frequency Adjustment. . . . . . . . . . . . . . . . . . . . . . 2-4
Spectrum Analyzer SSB Phase Noise Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Spectrum Analyzer Resolution Bandwidth Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Spectrum Analyzer Displayed Average Noise Level (DANL) . . . . . . . . . . . . . . . . . . . . . . . 2-6
Spectrum Analyzer Absolute Amplitude Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Amplitude Accuracy Across Frequency Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
50 MHz Amplitude Accuracy Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2-4 Power Meter Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Power Meter Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2-5 Vector Network Analyzer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Return Loss Verification Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
System Dynamic Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-6 Options Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Power Monitor (Option 5) Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Bias Tee (Option 10) Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Low Current Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
High Current Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Fault Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
GPS (Option 31) Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Chapter 3—Remove and Replace Instructions
3-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Battery Pack Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Battery Pack Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-3 Opening the MS203xA Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
To open the MS203xA case: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-4 Removing the Spectrum Analyzer PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3-5 Removing the VNA Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-6 Removing the Main PCB/LCD Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

2 10580-00168 Revision B MS203xA
3-7 Removing the LCD and Backlight Driver PCB from the Main PCB. . . . . . . . . . . . . . . . . . . . . . 3-6
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3-8 Main PCB Real Time Clock (RTC) Battery Removal and Replacement. . . . . . . . . . . . . . . . . . 3-6
3-9 Main Keypad Membrane and PCB Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3-10 Replacing the Function Key Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-11 Function Key Membrane and Switchpad Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Chapter 4—Troubleshooting
4-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Turn-on Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Unit cannot boot-up, no activity occurs when the On/Off key is pressed: . . . . . . . . . . . . . . 4-1
Unit begins the boot process, but does not complete boot-up: . . . . . . . . . . . . . . . . . . . . . . 4-1
Unit makes normal boot-up sounds, but the display has a problem:. . . . . . . . . . . . . . . . . . 4-1
Boot-up Self Test fails:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3 Battery Pack Charging Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-4 Operating Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Lock Error Messages: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Option 5, Power Monitor, Problems: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Spectrum Analyzer Problems:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Cable and Antenna Analyzer Problems: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Other Problems:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Appendix A—Test Records
A-1 Spectrum Analyzer RF Input VSWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-2 Spectrum Analyzer Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-3 Spectrum Analyzer SSB Phase Noise Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-4 Spectrum Analyzer Resolution Bandwidth Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A-5 Spectrum Analyzer DANL (Pre-Amp on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A-6 Spectrum Analyzer Absolute Amplitude Accuracy Characterization Chart. . . . . . . . . . . . . . . . A-4
A-7 Spectrum Analyzer Absolute Amplitude Accuracy Measured Values. . . . . . . . . . . . . . . . . . . . A-5
Characterization Chart for 50 MHz Amplitude Accuracy Verification . . . . . . . . . . . . . . . . . A-8
A-8 50 MHz Amplitude Accuracy Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
A-9 Power Meter Measurement Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Input Power Level at 50 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Input Power Level at 3885.1 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10
A-10 VNA Frequency Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12
A-11 VNA Return Loss Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12
A-12 VNA System Dynamic Range — MS2034A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
A-13 VNA System Dynamic Range — MS2036A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
A-14 Option 5 Power Monitor Accuracy Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
A-15 Option 31 GPS Receiver Verification - Spectrum Analyzer Frequency Accuracy . . . . . . . . . A-14
Appendix B—Test Fixture Schematics

MS203xA 10580-00168 Revision B 1-1
Chapter 1 — General Information
1-1 Introduction
This manual provides maintenance instructions for the Model MS2034A and Model MS2036A VNA Master. It
provides performance verification procedures, battery pack information, parts replacement procedures, and a
replaceable parts list. Appendix A contains blank test records which should be copied before use.
Familiarity with the basic operation of the front panel keys is assumed (for example, how to change
measurement mode, preset the unit, or the meaning of "soft key"). Refer to the VNA Master user guide
(Anritsu part number 10580-00166).
Note Before making any measurement, verify that that all equipment has warmed up for at least
30 minutes.

Required Test Equipment for Performance Verification
1-2 10580-00168 Revision B MS203xA
1-2 Required Test Equipment for Performance Verification
The following equipment is required for the “Spectrum Analyzer Verification”, “Power Meter Verification”,
“Vector Network Analyzer Functions”, and “Options Verification” tests that are described in Chapter 2,
“Performance Verification”. Each test section has a table that lists the specific equipment (from this list) that is
required for that test.
Instrument Critical Specification Recommended Manufacturer/Model
Synthesized Signal Source Frequency: 0.1 Hz to 20 GHz
Power Output to +13 dBm Anritsu Model MG3692A or MG3692B with the
following optionsa: 2A, 4, 22, 15
a.Option 15 is required for MG3692A models to achieve power of +13 dBm. MG3692B models do not require Option 15.
Power Meter Power Range: –70 to + 20 dBm Anritsu Dual Channel Model ML2438A
Power Sensor Frequency: 10 MHz to 18 GHz
Power Range: –67 to +20 dB Anritsu Model MA2442D (quantity 2)
RF Detector Frequency: 10 MHz to 20 GHz Anritsu Model 560-7N50B
Frequency Reference Frequency: 10 MHz Symmetricom Model RubiSource T&M
Frequency Counter Frequency: 2 GHz Anritsu Model MF2412B
Fixed Attenuator 10 dB Attenuation Aeroflex/Weinschel Model 44-10 (quantity 2)
GPS Antenna Anritsu Part Number 2000-1410
VNA Master External Power
Supply Anritsu Part Number 40-168-R
Test Fixture, High Current Load Resistance: 40 Ohm
Power: 5 Watts Anritsu Model T2904
Test Fixture, Low Current Load Resistance: 105 Ohm
Power: 1 Watts Anritsu Model T3377
Power Splitter Frequency: DC to 18 GHz Aeroflex/Weinschel Model 1870A
Adapter Frequency: DC to 20 GHz
N(m)-N(m), 50 Ohm Anritsu Model 34NN50A
Adapter Frequency: DC to 20 GHz
K(m)-N(f), 50 Ohm Anritsu Model 34RKNF50
Open/Short Anritsu Model 22N50
50 Ohm Termination (N male) Frequency: DC to 18 GHz
Return Loss: 40 dB minimum Anritsu Model 28N50-2
50 Ohm Termination (N female) Frequency: DC to 18 GHz
Return Loss: 40 dB minimum Anritsu Model 28NF50-2
6 dB Offset Termination Anritsu Model SC7424
20 dB Offset Termination Anritsu Model SC7423
RF Coaxial Cable Frequency: DC to 18 GHz
N(m)-N(m), 50 Ohm Anritsu Model 15NN50-0.6B
RF Coaxial Cable Frequency: DC to 6 GHz
N(m)-N(m) Anritsu Model 15NN50-1.5C
Coaxial Cable BNC(m) to BNC(m), 50 Ohm any
Vector Network Analyzer Frequency: 10 MHz to 9 GHz Anritsu Model MS4624B
Calibration Kit N Connector Anritsu 3753R

Replaceable Parts
MS203xA 10580-00168 Revision B 1-3
1-3 Replaceable Parts
To ensure that the correct options are provided on the replacement unit when ordering a Main/Spectrum
Analyzer PCB Assembly, all options that are installed in your instrument must be declared on the order. The
installed options are listed on a label on the top of the MS203xA and can also be viewed in the System/Status
display.
Part Number Description
ND66453 MS2034A Main/Spectrum Analyzer PCB Assembly for Serial Numbers <0737000
ND66454 MS2034A Main/Spectrum Analyzer PCB Assembly, with Option 31 for Serial Numbers <0737000
ND66455 MS2036A Main/Spectrum Analyzer PCB Assembly for Serial Numbers <0737000
ND66456 MS2036A Main/Spectrum Analyzer PCB Assembly, with Option 31 for Serial Numbers <0737000
ND66124 VNA Module Exchange Assembly for Serial Numbers <0806000
ND66432 Power Monitor (Option 5) Exchange Assembly
ND68045 MS2034A Main/Spectrum Analyzer PCB Assembly, support Option 31,
for Serial Numbers >0737000
ND68046 MS2036A Main/Spectrum Analyzer PCB Assembly, support Option 31,
for Serial Numbers >0737000
ND68536 VNA Module Assembly, for Serial Numbers >0806000
3-15-118 LCD Display
61368 Clear plastic LCD protector
2000-1346 LCD Backlight Inverter PCB
65681 Soft Carrying Case
64126-2 Case Top (excludes model ID Label and keypad items)
65680-2 Case Bottom (excludes tilt bail)
65686 Model MS2034A ID Label
65687 Model MS2036A ID Label
64146-2 Battery Door
633-44 Li-ion Battery Pack
ND64383 Fan
3-633-26 3v RTC Battery
40-168-R AC to DC Power Converter
3-2000-1500 Internal Compact Flash Card (256 MB)
65027-3 Main Keypad PCB
61362 Main Keypad
61363-1 Main Keyboard Bezel
61361 Softkeys Keypad
61378-1 Softkey Bezel
61333-3 Softkey PCB
790-625 Speaker
3-410-101 Encoder (excluding knob)
61360-2 Encoder Knob (excluding encoder)

Replaceable Parts
1-4 10580-00168 Revision B MS203xA

MS203xA 10580-00168 Revision B 2-1
Chapter 2 — Performance Verification
2-1 Introduction
This chapter provides procedures to verify performance, and Appendix A contains blank test records, which
should be copied before use.
Familiarity with the basic operation of the front panel keys is assumed (for example, how to change
measurement mode, preset the unit, or the meaning of "soft key").
2-2 Performance Verification
The sections below contain tests that can be used to verify the performance of the Model MS203xA. Section
“Spectrum Analyzer Verification” contains instructions to verify the Spectrum Analyzer functions, Section
“Power Meter Verification” contains instructions to verify the Power Meter function, Section “Vector Network
Analyzer Functions” contains instructions to verify the Vector Network Analyzer functions, and Section
“Options Verification” contains instructions to verify Options. Each Section begins with a list of required
equipment applicable to that section. Copy the appropriate blank test record in Appendix A and use it to record
measured values.
Note Before making any measurement, verify that that all equipment has warmed up for at least
30 minutes.

Spectrum Analyzer Verification
2-2 10580-00168 Revision B MS203xA
2-3 Spectrum Analyzer Verification
Required Equipment:
Spectrum Analyzer RF Input VSWR Check
This test verifies that the Spectrum Analyzer RF Input meets VSWR specification.
Procedure:
1. Connect a 15NN50-0.6B cable to Port 1 of VNA MS4624B.
2. Perform a Reflection Only calibration at the open end of the cable using the 3753R Calibration Kit. Set
the Test Port Connector Type to N male.
3. Change the MS4624B display to S11 Single Channel and SWR.
4. Connect the open end of the cable to the Spectrum Analyzer RF In connector.
5. Use a Marker to find the maximum value, and record the marker reading into the “Measured Value”
column in Table A-1, “Spectrum Analyzer RF Input VSWR”, in Appendix A.
Spectrum Analyzer Frequency Accuracy
This test verifies the Frequency Accuracy of the Spectrum Analyzer.
Procedure:
1. Connect the external 10 MHz Reference to the Anritsu MG3692X Synthesized Signal Source.
2. Do not connect the external 10 MHz Reference to the MS203xA.
3. Connect the output of the synthesizer to the Spectrum Analyzer RF In of the MS203xA.
4. On the MS203xA, change the Mode to Spectrum Analyzer and Preset the unit.
Table 2-1. Equipment Required for Spectrum Analyzer Verification
Instrument Critical Specification Recommended Manufacturer/Model
Synthesized Signal Source Frequency: 0.1 Hz to 20 GHz
Power Output to +13 dBm Anritsu Model MG3692A or MG3692B with the
following optionsa: 2A, 4, 22, 15
a. Option 15 is required for MG3692A models to achieve power of +13 dBm. MG3692B models do not require Option 15.
Power Meter Power Range: –70 to +
20 dBm Anritsu Dual Channel Model ML2438A
Power Sensor Frequency: 10 MHz to 18 GHz
Power Range: –67 to +20 dB Anritsu Model MA2442D (quantity 2)
Frequency Reference Frequency: 10 MHz Symmetricom Model RubiSource T&M
Fixed Attenuator 10 dB Attenuation Aeroflex/Weinschel Model 44-10 (quantity 2)
Power Splitter Frequency: DC to 18 GHz Aeroflex/Weinschel Model 1870A
Adapter Frequency: DC to 20 GHz
N(m)-N(m), 50 Ohm Anritsu Model 34NN50A
Adapter Frequency: DC to 20 GHz
K(m)-N(f), 50 Ohm Anritsu Model 34RKNF50
50 Ohm Termination Frequency: DC to 18 GHz Anritsu Model 28N50-2
RF Coaxial Cable Frequency: DC to 18 GHz
N(m)-N(m), 50 Ohm Anritsu Model 15NN50-0.6B
Coaxial Cable BNC(m) to BNC(m), 50 Ohm any
Vector Network Analyzer Frequency: 10 MHz to 9 GHz Anritsu Model MS4624B
Calibration Kit N Connector Anritsu 3753R

Spectrum Analyzer Verification
MS203xA 10580-00168 Revision B 2-3
5. Set the MG3692A or MG3692B output to 1 GHz CW, with an RF output level of –30 dBm.
6. On the MS203xA, press the Amplitude key, and set the Reference Level to –10 dBm.
7. Press the Freq key and set the Center Freq to 1.0 GHz.
8. Press the Span key, set the span to 10 kHz.
9. Press the BW key and set RBW to 100 Hz.
10. Press the VBW soft key and set to 30 Hz.
11. On the MS203xA, press the Marker key, and press the Peak Search soft key.
12. Record the marker frequency in Table A-2, “Spectrum Analyzer Frequency Accuracy” in Appendix A.
Verify that it is within specification.
13. For MS2036A, continue to next step. For MS2034A, go to the next section.
14. Set the synthesizer for 7.0 GHz and set the center frequency of the MS2036A to 7.0 GHz.
15. On the MS2036A, press the Marker key, and press the Peak Search soft key.
16. Record the marker frequency in Table A-2 in Appendix A. Verify that it is within specification.
If the unit fails the Spectrum Analyzer Frequency Accuracy test, then perform the Spectrum Analyzer Internal
Reference Frequency Adjustment procedure in the following section. If the unit still fails the Frequency
Accuracy test after the Internal Reference Frequency adjustment has been completed, then replace the PCB
assembly.

Spectrum Analyzer Verification
2-4 10580-00168 Revision B MS203xA
Spectrum Analyzer Internal Reference Frequency Adjustment
Use this procedure to adjust the frequency if the unit fails the Spectrum Analyzer Frequency Accuracy
verification test in the previous section.
Procedure:
1. Connect the external 10 MHz Reference to the Anritsu MG3692A or MG3692B Synthesized Signal
Source. Do not connect the external 10 MHz Reference to the MS203xA.
2. Connect the output of the synthesizer to the Spectrum Analyzer RF In of the MS203xA.
3. On the MS203xA, Verify that the unit is in the Spectrum Analyzer mode and Preset the unit.
4. Set the MG3692A or MG3692B output to 1 GHz with an RF output level of –30 dBm.
5. On the MS203xA, press the Amplitude key and set the Reference Level to –10 dBm.
6. Set the Atten Lvl to 0 dB.
7. Press the Freq key and set the Center Freq to 1.0 GHz.
8. Press the Span key, use the keypad to enter 10, and press the kHz soft key.
9. Press the BW key and set the RBW to 100Hz.
10. Press the VBW soft key and set to 30 Hz.
11. Press and hold the Shift key and press the 4th, 6th, and 8th (below Esc) soft keys together in order to
enter into the MS203xA Service Mode (Figure 2-1).
12. Press the Service Menu soft key, then the APP Service soft key.
13. Press the Calibration soft key, then the 10 MHz Ref soft key.
14. Use the Up/Down arrow keys or the rotary knob to slowly adjust the displayed signal to the center of the
display. Allow the signal to stabilize between adjustments, and repeat as necessary.
15. Turn the MS203xA Off, and then back On, to exit Service Mode.
Figure 2-1. MS203xA Service Mode

Spectrum Analyzer Verification
MS203xA 10580-00168 Revision B 2-5
Spectrum Analyzer SSB Phase Noise Verification
This test can be used to verify the single side band phase noise of the MS203xA.
Procedure:
1. Connect the external 10 MHz Reference to the Anritsu MG3692A or MG3692B Synthesized Signal
Source.
2. Connect the output of the synthesizer to the Spectrum Analyzer RF In connector of the MS203xA.
3. Set the MG3692A or MG3692B output to 900 MHz CW, with an RF output level of + 3 dBm.
4. Verify that the MS203xA is in the Spectrum Analyzer mode. Preset the unit.
5. Press the Amplitude key, then set the Reference Level to 0 dBm.
6. Press the Atten Lvl soft key, enter 15 dB.
7. Press the Freq key and set the Center Freq to 900 MHz.
8. Press the Span key, set to 210 kHz.
9. Press the BW key and set the RBW to 1 kHz.
10. Press the VBW soft key set to 3 Hz.
11. Press the Shift key and then press the Trace (5) key.
12. Press Trace A Operations, and set the # of Averages to 7.
13. Wait until the Trace Count (left side of display) displays 7/7.
14. Press the Marker key and press the Peak Search soft key.
15. Press the Delta On/Off soft key to turn Delta On.
16. Use the keypad to enter 10 and press the kHz soft key.
17. Subtract 30 from the dB value shown on the marker readout to convert the value to dBc/Hz (for example,
if the marker reads –80 dB, then the value becomes –110 dBc/Hz. Record the dBc/Hz value in Table A-3,
“Spectrum Analyzer SSB Phase Noise Verification” in Appendix A.
18. Repeat Step 16 and Step 17 for 20 kHz marker delta, 30 kHz marker delta, and 100 kHz marker delta.

Spectrum Analyzer Verification
2-6 10580-00168 Revision B MS203xA
Spectrum Analyzer Resolution Bandwidth Accuracy
This test checks the accuracy of the resolution bandwidth settings.
1. Connect the external 10 MHz Reference to both the MG3692x synthesized Source and to the MS203xA
VNA Master.
2. Verify that the mode of the MS203xA is set to Spectrum Analyzer. Preset the unit.
3. Set the MS203xA as follows:
a. Center Frequency: 1.0 GHz
b. Reference Level: –10 dBm
c. Attenuation Level: 0 dB
4. Set the MG3692A or MG3692B to 1 GHz, with an output level of –30 dBm. Apply the signal to the
spectrum analyzer input of the MS203xA.
5. Set the Span of the MS203xA to 4.5 MHz.
6. Press the BW key and set the RBW to 3 MHz.
7. Under the Measure menu, press OCC BW and set it to On.
8. Press the dBc soft key and enter 3.
9. Record the occupied bandwidth in Table A-4, “Spectrum Analyzer Resolution Bandwidth Accuracy” in
Appendix A and verify it is within specification.
10. Repeat Step 5through Step 9for all other settings on the test record.
Spectrum Analyzer Displayed Average Noise Level (DANL)
The following test can be used to verify the Displayed Average Noise Level of the MS203xA. This test is
performed using the RMS detection mode, with pre-amp on.
Procedure:
1. Connect the 50 Ohm termination to the MS203xA Spectrum Analyzer RF In.
2. Verify that the MS203xA is in the Spectrum Analyzer mode. Preset the unit.
3. Press the Amplitude key and set Atten Lvl to 0 dB.
4. Press the Reference Level soft key and set to –50 dBm.
5. Press the Pre-amp On/Off soft key to turn it On.
6. Press the Shift key and then press the Sweep (3) key, then press Detection, then press RMS.
7. Press the BW key. Select RBW of 100 kHz, and select VBW according to the test record in Table A-5,
“Spectrum Analyzer DANL (Pre-Amp on)” in Appendix A
8. Enter the Start and Stop frequencies (press the Freq key) from Table A-5 in Appendix A.
9. Wait until 1 sweep has completed.
10. Press the Marker key and press the Peak Search soft key.
11. Record the Marker reading in the “Measured dBm (100 kHz)” column of Table A-5.
12. Repeat Step 8through Step 11 for the other frequencies on the list. For each measured 100 kHz value in
Table A-5, convert this to 10 Hz RBW value by subtracting 40 dB. For example, if the marker shows a
value of –110 dBm at 100 kHz RBW, the computed value at 10 Hz RBW is –150 dBm.) Enter the
computed values or –174 dBm, whichever is higher, in Table A-5.

Spectrum Analyzer Verification
MS203xA 10580-00168 Revision B 2-7
Spectrum Analyzer Absolute Amplitude Accuracy
The tests in this section verify the level accuracy of the MS203xA Spectrum Analyzer. This test has two parts:
•“Amplitude Accuracy Across Frequency Verification”
•“50 MHz Amplitude Accuracy Verification”
Amplitude Accuracy Across Frequency Verification
Amplitude Accuracy Across Frequency Verification Setup Procedure:
1. Connect both MA2442D power sensors to the power meter and calibrate the sensors.
2. Connect the model 1870A power splitter to the MG3692A or MG3692B output and Sensor B to one of the
power splitter outputs (Refer to Figure 2-2).
3. Install the 10 dB Fixed Attenuator to the other power splitter output and then connect Sensor A to the
end of the Attenuator.
4. Set the frequency of the MG3692A or MG3692B to the first (then to the next) frequency in Table A-6,
“Spectrum Analyzer Absolute Amplitude Accuracy Characterization Chart” in Appendix A.
5. Set the Model ML2438A power meter to display both Channel A and Channel B. Press the Sensor key,
the Cal Factor soft key, and then the Freq soft key. Use the keypad to enter the value matching the
frequency of MG3692A or MG3692B as the input signal frequency, which sets the power meter to the
proper power sensor calibration factor. Repeat for Channel B. Press the System key to display the power
reading.
6. Adjust the power level of the MG3692A or MG3692B so that Sensor A reads –2.0 dBm.
7. Record the Sensor B reading in the –2 dBm column in Table A-6.
8. Repeat Step 4through Step 7for all the frequencies in Table A-6.
9. Repeat Step 4through Step 7for a power level of –30.0 dBm, and record those values in the –30 dBm
column of Table A-6.
10. Remove Sensor A from the attenuator output, install the 34NN50A adapter to the end of the Attenuator,
and connect the splitter/attenuator fixture to the MS203xA as shown in Figure 2-3. To maintain test
setup integrity, do not disconnect Sensor B, the power splitter, or the fixed attenuator.
Figure 2-2. Component Characterization
SENSOR B SENSOR A
A
B
ML2438A POWER METER
MG369XA SOURCE 15NNF50-1.5C
34RSN50
ADAPTER
N241A50
ATTENUATOR

Spectrum Analyzer Verification
2-8 10580-00168 Revision B MS203xA
Amplitude Accuracy Across Frequency Verification Test Procedure:
Use Table A-6, “Spectrum Analyzer Absolute Amplitude Accuracy Characterization Chart” on page A-4 to
complete the Amplitude Accuracy Across Frequency Verification test record as follows:
1. Verify that the MS203xA is in the Spectrum Analyzer mode. Preset the unit.
2. On the MS203xA, press the Amplitude key and then set the Reference Level to –20 dBm.
3. Set the Atten Lvl to 0 dB.
4. Press the BW key and set the RBW to 1 kHz.
5. Set the VBW to 10 Hz.
6. Press the Span key and set span to 10 kHz.
7. Press the Freq key and press the Center Freq soft key.
8. Enter 50 MHz (or the next frequency).
9. Set the Model ML2438A power meter to display Channel B. Press the Sensor key, the Cal Factor soft key,
and then the Freq soft key. Use the keypad to enter the value matching the frequency of MG3692A or
MG3692B as the input signal frequency, which sets the power meter to the proper power sensor
calibration factor. Press the System key to display the power reading.
10. Set the MG3692A or MG3692B output to match the frequency in the preceding step.
11. Adjust the MG3692A or MG3692B power level so that the Sensor B for the power meter displays the
Sensor B reading in Table A-6, “Spectrum Analyzer Absolute Amplitude Accuracy Characterization
Chart” for –30 dBm.
12. Press the Marker key and press the Peak Search soft key.
13. Record the Marker 1 amplitude reading in the “Measured Value” column in Table A-7, “Measured Values
for–30dBm,0dBAttenuation”in Appendix A.
14. Verify that the Marker 1 amplitude reading is within the specification.
Figure 2-3. Test Setup for Amplitude Accuracy Across Frequency Verification
ML2438A POWER METER
SENSOR B
MA2442A
MG3692A SOURCE
15NNF50-1.5C
34NN50A
ADAPTER
10 dB
ATTENUATOR
34RSN50 ADAPTER
N241A50