Anritsu MS2691A User manual

Document No.: M-W2852AE-30.0
ANRITSU CORPORATION
●For safety and warning information, please read this
manual before attempting to use the equipment.
●
Additional safety and warning information is provided
within the MS2690A/MS2691A/MS2692A Signal
Analyzer Operation Manual (Mainframe Operation).
Please also refer to this document before using the
equipment.
●
Keep this manual with the equipment.
MS2690A/MS2691A/MS2692A
Signal Analyzer
Operation Manual
Signal Analyzer Function
Operation
30th Edition

ii
Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following
safety symbols to indicate safety-related information. Ensure that you clearly understand the meanings of the
symbols BEFORE using the equipment. Some or all of the following symbols may 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.
Symbols used in manual
This indicates a very dangerous procedure that could result in serious injury or
death if not performed properly.
This indicates a hazardous procedure that could result in serious injury or death if
not performed properly.
This indicates a hazardous procedure or danger that could result in light-to-severe
injury, or loss related to equipment malfunction, if proper precautions are not taken.
Safety Symbols Used on Equipment and in Manual
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 using the equipment.
This indicates a prohibited operation. The prohibited operation is indicated
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These indicate that the marked part should be recycled.
MS2690A/MS2691A/MS2692A
Signal Analyzer
Operation Manual Signal Analyzer Function Operation
24 April 2007 (First Edition)
30 October 2017 (30th Edition)
Copyright © 2007-2017, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan
DANGER
WARNING
CAUTION

iii
Notes On Export Management
This product and its manuals may require an Export License/Approval by
the Government of the product's country
of origin for re-
export from your
country.
Before re
-
exporting the product or manuals, please contact us to confirm
whet
her they are export-controlled items or not.
When you dispose of export
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controlled items, the products/manuals need to
be broken/shredded so as not to be unlawfully used for military purpose.
Cautions Against Computer Virus Infection
●
Copying files and data
Only files that have been provided directly from Anritsu or generated
using Anritsu equipment should be copied to the instrument.
All other required files should be transferred by means of USB or
CompactFlash media after undergoing a thorough virus check.
●
Adding software
Do not download or install software that has not been specifically
recommended or licensed by Anritsu.
●
Network connections
Ensure that the network has sufficient anti-
virus security protection in
place.

iv

I
About This Manual
Operation manual configuration
The operation manual configuration of the MS2690A/MS2691A/MS2692A
Signal Analyzer is shown below.
MS2690A/MS2691A/MS2692A Signal Analyzer Operation Manual
(
Main Frame O
p
eration
)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual (Phase Noise Measurement Function Operation)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual (Phase Noise Measurement Function Remote Control)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual (Main Frame Remote Control)
MS2850A Signal Analyzer Operation Manual (Main Frame Operation)
Or
MS2830A Signal Analyzer Operation Manual (Main Frame Operation)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual (Signal Analyzer Function Remote Control)
MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual
(Signal Analyzer Function Operation)
Or
MS2690A/MS2691A/MS2692A
Spectrum Analyzer Operation Manual
(Spectrum Analyzer Function Operation)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A/MS2850A
Signal Analyzer Operation Manual (Spectrum Analyzer Function Remote Control)
MS2830A/MS2840A/MS2850A
Spectrum Analyzer Operation Manual
(Spectrum Analyzer Function Operation)
Or
MS2840A Signal Analyzer Operation Manual (Main Frame Operation)
MS2690A/MS2691A/MS2692A
Signal Analyzer Operation Manual
(Signal Analyzer Function Operation)

II
Signal Analyzer Operation Manual (Mainframe Operation)
Signal Analyzer Operation Manual (Mainframe Remote Control)
Description of basic operations, maintenance procedures, common
functions and common remote functions of the mainframe
Signal Analyzer Operation Manual (Signal Analyzer Function Operation)
<This document>
Signal Analyzer Operation Manual (Signal Analyzer Function Remote
Control)
Description of basic operations, functions and remote functions of the
signal analyzer
Signal Analyzer Operation Manual (Spectrum Analyzer Function
Operation)
Signal Analyzer Operation Manual (Spectrum Analyzer Function Remote
Control)
Description of basic operations, functions and remote functions of the
spectrum analyzer
Signal Analyzer Operation Manual (Phase Noise Measurement Function
Operation)
Signal Analyzer Operation Manual (Phase Noise Measurement Function
Remote Control)
Description of basic operations, functions and remote functions of the
phase noise measurement function.
In this document, indicates a panel key.

III
Appendix Index
1
2
3
4
5
6
7
Table of Contents
About This Manual........................................ I
Chapter 1 Overview ........................................... 1-1
1.1 Overview of Signal Analyzer......................................... 1-2
1.2 Features of Signal Analyzer.......................................... 1-3
Chapter 2 Basic Operation................................ 2-1
2.1 Display Description ....................................................... 2-2
2.2 Setting Frequency......................................................... 2-4
2.3 Setting Level ............................................................... 2-15
2.4 Setting IQ Data Capture Time Range......................... 2-31
Chapter 3 Selecting Waveform Capture
Method............................................ 3-1
3.1 Single/Continuous Measurement.................................. 3-2
3.2 Trigger Function............................................................ 3-3
Chapter 4 Trace ................................................. 4-1
4.1 Selecting Trace............................................................. 4-3
4.2 Spectrum....................................................................... 4-5
4.3 Power vs Time ............................................................ 4-71
4.4 Frequency vs Time ................................................... 4-118
4.5 Phase vs Time .......................................................... 4-157
4.6 CCDF ........................................................................ 4-175
4.7 Spectrogram ............................................................. 4-200
4.8 No Trace ................................................................... 4-221
4.9 Sub-Trace ................................................................. 4-227
Chapter 5 Digitize Function .............................. 5-1
5.1 Saving IQ Data.............................................................. 5-2
5.2 Replay Function.......................................................... 5-10
5.3 Playback Function ...................................................... 5-18

IV.
Chapter 6 System Setting ................................. 6-1
6.1 Setting System.............................................................. 6-2
6.2 Erasing Warm up Message .......................................... 6-3
6.3 Setting Title ................................................................... 6-4
6.4 Adjusting Internal Reference Clock Signal ................... 6-5
6.5 Input Source for Reference Clock Signal ..................... 6-6
6.6 Pre-Amp On/Off Display ............................................... 6-7
6.7 Setting Preselector ....................................................... 6-8
Chapter 7 Setting DigRF 3G.............................. 7-1
7.1 Display Description ....................................................... 7-2
7.2 Setting Input.................................................................. 7-3
7.3 Setting Frequency......................................................... 7-8
7.4 Setting Level ................................................................. 7-9
7.5 Setting IQ Data Capture Time Range......................... 7-11
7.6 Trigger Function.......................................................... 7-14
7.7 Selecting Trace........................................................... 7-16
7.8 Saving IQ Data............................................................ 7-36
7.9 System Setting............................................................ 7-40
7.10 Default Value List........................................................ 7-42
Appendix A Error Messages....................... A-1
Appendix B Default Value List ................... B-1
Appendix C Standard Parameter List ........ C-1
Appendix D FFT and RBW .......................... D-1
Appendix E IQ Data Time Actually Required.. E-1
Appendix F Saving Waveform CSV DATA F-1
Index .......................................................... Index-1

1-1
1
Overview
Chapter 1
Overview
This chapter describes an overview of the Signal Analyzer function.
1.1 Overview of Signal Analyzer......................................... 1-2
1.2 Features of Signal Analyzer.......................................... 1-3

Chapter 1 Overview
1-2
1.1 Overview of Signal Analyzer
The MS2690A/MS2691A/MS2692A Signal Analyzer (hereinafter, referred
to as “MS2690A/MS2691A/MS2692A”) can measure the transmitter
characteristics of wireless devices for various types of mobile
communications quickly, accurately, and easily.
The Signal Analyzer function can achieve high-speed spectrum analysis
and simultaneous analysis on the frequency and time axes, which cannot
be achieved by a conventional sweep type spectrum analyzer, by using
FFT processing (fast Fourier transformation). Also, it can record the RF
input signal as digital data (digitize function).
The Signal Analyzer function has the following features:
•Broad frequency band (6 GHz/13.5 GHz/26.5 GHz)
•Broad analysis bandwidth (31.25 MHz/62.5 MHz*1/125 MHz*2)
•Continuous analysis of captured data is available
•High-capacity waveform memory is installed
•High-speed spectrum analysis is available
•Wide variety of measurement functions
These characteristics enable the MS2690A/MS2691A/MS2692A to be
used for various applications, from research and development to
manufacturing.
*1: 62.5 MHz can be set only when Option 078 Analysis Bandwidth
(hereafter, Option 078) is installed.
*2: 125 MHz can be set only when Option 004 Wideband Analysis
Hardware or Option 078 Analysis Bandwidth (hereafter, Option 078) is
installed.

1.2 Features of Signal Analyzer
1-3
1
Overview
1.2 Features of Signal Analyzer
A signal analyzer can perform analysis with both the frequency and time
axes. It achieves high-speed spectrum analysis by using fast Fourier
transformation (FFT) technology.
Differences from a sweep type spectrum analyzer
This section compares the MS2690A/MS2691A/MS2692A with a
conventional sweep type spectrum analyzer and describes the
differences.
Magnitude
Frequency
Time
Sweep
Figure 1.2-1 Principle of a sweep type spectrum analyzer
As shown in Figure 1.2-1, a sweep type spectrum analyzer sweeps a filter
with a certain frequency band. Because observation is done only within
the filter band, only one frequency can be observed at one given moment.
To analyze a spectrum of multiple signals simultaneously, the filter must
be swept in the entire band, and no signal can be detected for a high
sweep speed (i.e., short sweep time). This results in a limitation of the
sweep speed for accurate measurement.
On the other hand, the MS2690A/MS2691A/MS2692A captures the time
domain data and performs FFT processing to display all the signals in
the frequency band simultaneously, quickly, and accurately.
Time
Data
FFT
FFT
FFT
…
Figure 1.2-2 Principle of MS2690A/MS2691A/MS2692A

Chapter 1 Overview
1-4.
Analyzing captured IQ data in various domains
The MS2690A/MS2691A/MS2692A can analyze simultaneous input
signals by capturing IQ data for a certain time interval.
Spectrum: Performs spectrum analysis by the FFT method. It
performs noise measurement and power
measurement of modulation signal waves accurately
and quickly, which are difficult to measure
accurately by using a sweep type spectrum analyzer.
Power vs Time: Observes time fluctuations of power. It performs
burst average power accurately and quickly.
Frequency vs Time: Observes time fluctuations of frequency. It can
perform frequency lock time measurement without
using any special instrument.
Phase vs Time: Measures time fluctuation of phase.
CCDF: Performs Complementary Cumulative Distribution
Function (CCDF) analysis.
Spectrogram Performs Spectrogram analysis. It is used to
diagram the changes in a spectrum over time.
Figure 1.2-3 Multiple analyses
As shown in Figure 1.2-3, once the IQ data for a certain
time interval is captured, 4 types of analysis methods can
be selected for analysis in the time range.

2-1
2
Basic Operation
Chapter 2
Basic Operation
This chapter describes the basic operation for the Signal Analyzer
function.
2.1 Display Description ....................................................... 2-2
2.2 Setting Frequency......................................................... 2-4
2.2.1 Setting center frequency .................................. 2-8
2.2.2 Setting frequency span..................................... 2-9
2.2.3 Setting start frequency.................................... 2-11
2.2.4 Setting stop frequency.................................... 2-12
2.2.5 Setting frequency band .................................. 2-13
2.2.6 Setting step size ............................................. 2-14
2.3 Setting Level ............................................................... 2-15
2.3.1 Setting reference level.................................... 2-19
2.3.2 Setting input attenuator .................................. 2-20
2.3.3 Setting scale ................................................... 2-26
2.3.4 Setting reference level unit............................. 2-28
2.3.5 Setting reference level offset.......................... 2-29
2.3.6 Pre-Amp ......................................................... 2-30
2.3.7 Microwave Preselector Bypass ...................... 2-30
2.4 Setting IQ Data Capture Time Range......................... 2-31
2.4.1 Setting capture time........................................ 2-32
2.4.2 Recapture and Reanalysis ............................. 2-34
2.4.3 Parameters recaptured
when Capture Time is set to Manual.............. 2-37

Chapter 2 Basic Operation
2-2
2.1 Display Description
This section describes the display items on the main screen of the Signal
Analyzer function.
Figure 2.1-1 Main screen of Signal Analyzer function

2.1 Display Description
2-3
2
Basic Operation
The main function menu on the main screen is described below.
F1
F2
F3
F4
F5
F6
F7
F8
Figure 2.1-2 Main function menu
Table 2.1-1 Main function menu
Menu Display Function
Frequency Sets the frequency.
2.2 “Setting Frequency”
Amplitude Sets the level.
2.3 “Setting Level”
Trigger Sets the trigger.
3.2 “Trigger Function”
Trace Configures the settings related to trace.
“Chapter 4 Trace”
Capture Used for setting related to IQ data capture.
2.4 “Setting IQ Data Capture Time Range”
Accessory Sets up other functions.
“Chapter 6 System Setting”

Chapter 2 Basic Operation
2-4
2.2 Setting Frequency
The Signal Analyzer function can set the following four measurement
frequencies.
Center frequency
Frequency span
Start frequency
Stop frequency
Pressing (Frequency) from page 1 of the main function menu, or
pressing displays the Frequency function menu.
Press the span setting key to set the frequency span.
Figure 2.2-1 Frequency key and Span key

2.2 Setting Frequency
2-5
2
Basic Operation
F1
F2
F3
F4
F5
F6
F7
F8
Figure 2.2-2 Frequency function menu
Table 2.2-1 Frequency function menu
Menu Display Function
Frequency Page 1 Press Frequency to display this menu.
Center Sets the center frequency.
2.2.1 “Setting center frequency”
Start Sets the start frequency.
2.2.3 “Setting start frequency”
Span Sets the frequency span.
2.2.2 “Setting frequency span”
Stop Sets the stop frequency.
2.2.4 “Setting stop frequency”
Preselector
Auto Tune
Perform the preselector auto tuning. (displayed only for the
MS2691A/ MS2692A).
6.7.1 “Preselector auto tuning”
Step Size Sets the step size for center, start and stop frequency.
2.2.6 “Setting step size”
Frequency Band
Mode
(Spurious/Normal)
Selects the Spurious Mode (1-L band capture), or Normal
Mode (normal capture) (displayed only for
MS2691A/MS2692A with Option 003 installed).
2.2.5 “Setting frequency band”

Chapter 2 Basic Operation
2-6
Table 2.2-1 Frequency function menu (Cont’d)
Menu Display Function
Frequency Page 2 Press Frequency, and then press to display this menu.
Micro Wave
Preselector Bypass
Enables/Disables the Micro Wave Preselector Bypass
function. This function is available with MS2692A-067/167.
2.3.7 “Microwave Preselector Bypass”
1.3.7
“MS2692A-067/167”in the
MS2690A/MS2691A/MS2692A Signal Analyzer Operation
Manual (Mainframe Operation)
The display items related to the frequency parameters are described
below.
[1]
[2]
Figure 2.2-3 Display items related to frequency parameters
Table 2.2-2 Display items related to frequency parameters
No. Display Description
[1]
Center Freq.
or
Start Freq.
Displays the center frequency or start
frequency.
[2] Freq. Span Displays the frequency span.

2.2 Setting Frequency
2-7
2
Basic Operation
The relationships between the center frequency, frequency span, start
frequency, and stop frequency are always as shown in Figure 2.2-4. When
any of the center frequency, start frequency, stop frequency, and
frequency span are set, the remaining 2 frequencies that have not been
set are automatically set.
Freq.
Start frequency
Frequency span
Frequency span/2
Center frequency Stop frequency
Figure 2.2-4 Center frequency, frequency span, start frequency, and
stop frequency
Example: When the frequency span is set to 5 MHz, and the stop frequency
to 1 GHz
Frequency span: 5 MHz
Stop frequency: 1 GHz
Start frequency: 995 MHz (auto setting)
Center frequency: 997.5 MHz (auto setting)

Chapter 2 Basic Operation
2-8
2.2.1 Setting center frequency
Example: To set the center frequency to 1 MHz
<Procedure>
1. Press , or press (Center) from the Frequency function
menu.
2. After pressing , press (MHz) to set the center frequency.
Setting range and resolution for center frequency
Setting range: 0 Hz to 6 GHz (MS2690A)
0 Hz to 13.5 GHz (MS2691A)
0 Hz to 26.5 GHz (MS2692A)
If the frequency span is more
than 50 MHz, the lower limit
frequency is 300 MHz.
Minimum setting resolution: 1 Hz
Rotary knob resolution: 010
xHz
Up/down step key resolution: 2.2.6 “Setting step size”
Left/right step key resolution: 2.2.6 “Setting step size”
x: Frequency span [Hz] 2.2.2 “Setting frequency span”
The start frequency and stop frequency are automatically set when the
center frequency is set.
Note:
The setting range is limited when the frequency span is 50 MHz or
more. Refer to Section 2.2.2 “Setting frequency span” for details.