Anritsu MS2690A User manual

Document No.: M-W2854AE-40.0
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
Spectrum Analyzer Function
Operation
40th 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
symbolically in or near the barred circle.
This indicates an obligatory safety precaution. The obligatory operation is
indicated symbolically in or near the circle.
This indicates a warning or caution. The contents are indicated symbolically in or
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These indicate that the marked part should be recycled.
MS2690A/MS2691A/MS2692A
Signal Analyzer
Operation Manual Spectrum Analyzer Function Operation
24 April 2007 (First Edition)
23 June 2016 (40th Edition)
Copyright © 2007-2016, 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
-
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
Signal Analyzer Operation Manual (Phase Noise Measurement Function Operation)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A
Signal Analyzer Operation Manual (Phase Noise Measurement Function Remote Control)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A
Signal Analyzer Operation Manual (Main Frame Remote Control)
MS2840A Signal Analyzer Operation Manual
(Main Frame Operation)
Or MS2830A Signal Analyzer Operation Manual
(
Main Frame O
p
eration
)
MS2690A/MS2691A/MS2692A
Signal Analyzer Operation Manual
(Signal Analyzer Function
Operation)
MS2690A/MS2691A/MS2692A and MS2830A/MS2840A
Signal Analyzer Operation Manual (Signal Analyzer Function Remote Control)
MS2830A/MS2840A
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
Signal Analyzer Operation Manual (Spectrum Analyzer Function Remote Control)
MS2830A/MS2840A
Spectrum Analyzer Operation Manual
(Spectrum Analyzer Function
Operation)
Or

II
•Signal Analyzer Operation Manual (Mainframe)
•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)
•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) <This
document>
•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
•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.

IV
Table of Contents
About This Manual....................................... I
Chapter 1 Overview ................................... 1-1
1.1 Overview of Spectrum Analyzer ................................ 1-2
1.2 Features of Spectrum Analyzer ................................. 1-3
Chapter 2 Basic Operation........................ 2-1
2.1 Display Description .................................................... 2-2
2.2 Single/Continuous Sweep.......................................... 2-4
2.3 Setting Frequency...................................................... 2-5
2.4 Setting Level .............................................................. 2-14
2.5 Setting RBW/VBW ..................................................... 2-29
Chapter 3 Display Mode Selection ........... 3-1
3.1 Setting Storage Mode ................................................ 3-2
3.2 Setting Limit Line ....................................................... 3-10
3.2 Setting Time/Sweep................................................... 3-29
3.4 Save on Event............................................................ 3-33
Chapter 4 Marker Function ....................... 4-1
4.1 Setting Marker............................................................ 4-2
4.2 Setting Peak Search Function ................................... 4-13
4.3 Displaying Marker List ............................................... 4-23
Chapter 5 Trigger Function and
Gate Function ........................... 5-1
5.1 Setting Trigger Function ............................................ 5-2
5.2 Setting Gate Function ................................................ 5-7
Chapter 6 Preselector Tuning Function... 6-1
6.1 Preselector Tuning Function...................................... 6-2

V
1
2
3
4
5
6
7
8
Appendix Index
Chapter 7 Measure Function .................... 7-1
7.1 Selecting Measure Function ...................................... 7-2
7.2 Adjacent Channel Leakage Power Measurement
(ACP) ......................................................................... 7-4
7.3 Burst Average Power Measurement.......................... 7-12
7.4 Channel Power Measurement (Channel Power) ....... 7-15
7.5 Occupied Bandwidth Measurement
(Occupied Bandwidth) ............................................... 7-17
7.6 Spectrum Emission Mask Measurement
(Spectrum Emission Mask)........................................ 7-20
7.7 Spurious Emission Measurement.............................. 7-31
7.8 Two-tone Third Order Intermodulation Distortion ...... 7-48
Chapter 8 Other Functions ....................... 8-1
8.1 Selecting Other Function ........................................... 8-2
8.2 Setting Title ................................................................ 8-3
8.3 Deleting Warmup Message ....................................... 8-4
8.4 Setting Uncal Message.............................................. 8-5
8.5 Adjusting Internal Reference Frequency Signal ........ 8-5
8.6 Input Source for Reference Frequency Signal .......... 8-7
Appendix A Error Messages ...................... A-1
Appendix B Default Value List................... B-1
Appendix C Standard Parameter List........ C-1
Index .......................................................... Index-1

VI.

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

Chapter 1 Overview
1-2
1.1 Overview of Spectrum Analyzer
The MS2690A/MS2691A/MS2692A Signal Analyzer (hereinafter, referred
to as “MS2690A/MS2691A/MS2692A”) is a device used for the quick,
highly accurate, and simple measurement of the transmission
characteristics of various wireless devices and systems.
The spectrum analyzer function enables full-span analysis of a broad
spectrum, which is a characteristic of conventional sweep type spectrum
analyzers, and realizes quick and highly accurate signal processing
through the use of a digital IF block. These features make the Spectrum
Analyzer function ideal for various applications ranging from R&D to
manufacturing.
The Spectrum Analyzer function has the following features.
•Frequency band (6 GHz/13.5 GHz/26.5 GHz)
•Broad analysis bandwidth (20 MHz)
•High dynamic range (180 dB)
•High-speed and high-accuracy signal analysis through digital IF

1.2 Features of Spectrum Analyzer
1-3
1
Overview
1.2 Features of Spectrum Analyzer
A spectrum analyzer is a measuring device for analyzing the frequency
components of an input signal. The relative values of the various
frequency components are displayed in graph form, with the horizontal
axis representing the frequency and the vertical axis the signal level.
Figure 1.2-1 shows a schematic representation of a signal that includes a
harmonic distortion component as observed with an oscilloscope and a
spectrum analyzer. Observation of a signal that includes harmonic
components with an oscilloscope yields a waveform with distortion, not a
sine wave. This indicates that the signal includes harmonic components,
but the magnitudes of the various harmonic components cannot be
quantitatively measured. Using a spectrum analyzer enables the
quantitative grasp of signal components by dividing the signal
components into their various frequency components and graphing each
frequency and amplitude. In the example shown in Figure 1.2-1, the
signal can be seen to consist of a fundamental wave (f0) and a second
harmonic component (2 ×f0), and their respective amplitudes can be read
from this figure.
2f 0
f 0
Spectrum analyzer
waveform
Oscilloscope waveform
Frequency
Time
Amplitude
Figure 1.2-1 Comparison of spectrum analyzer and oscilloscope
Spectrum analyzer principle
A spectrum analyzer separates the input signal down to the level of
single frequencies and obtains their respective amplitudes. Concretely,
following extraction of single frequencies using a narrow-band filter(s),
their amplitudes are obtained through wave detection. Separation into
the various signal components through the use of a filter(s) can be done
using two different methods. One method consists in using multiple
filters to obtain the various frequency components in one time (real-time
method), while the other method consists in obtaining the various
frequency components by changing the center frequency of a single filter
over time (sweep method).

Chapter 1 Overview
1-4
The real-time method, which is characterized by a small time lag, is
suitable for measurement in a narrow frequency range of several tens of
MHz maximum. Compared to the real-time method, the sweep method
requires a long time to draw a screen, but since it allows observation of a
wide frequency range on the order of several GHz at one time, it is a
powerful method for high-order harmonic level measurement and the
detection of unknown frequency components.
Frequency-variable
knob
Input signal
Input signal
Sweep-type spectrum analyzer
Real-time-type spectrum analyzer
Bandpass filter
(Waveform-variable)
bandpass filter
Display device
Display device
Figure 1.2-2 Spectrum analyzer principle
Attenuator
Pre-selector
Mixer
Local oscillator
Sweep signal
generator
IF amp.
IF filter
Logarithmic
amp.
Wave
detector
Video filter
Display
Yaxis
Xaxis
RF input
Figure 1.2-3 Configuration of typical sweep-type spectrum analyzer

1.2 Features of Spectrum Analyzer
1-5
1
Overview
Figure 1.2-3 shows the configuration of a typical sweep-type spectrum
analyzer. The super heterodyne method, which is one of the methods that
can be used for implementing a sweep-type spectrum analyzer, is
described below. The input signal from external sources passes through
an input circuit consisting of an attenuator and a preselector and is
mixed with the signal from the local oscillator by a mixer. Here, the input
signal is converted into a signal of a given frequency (IF). After being
processed through an IF stage, this IF signal determines the vertical axis
(level) on the display based on its level. The local oscillator, which
operates on the principle that the oscillation voltage changes according to
the input voltage, is controlled by the signal from the sweep signal
generator (sawtooth wave generator) and determines the horizontal axis
(frequency) of the display. As a result, a level that corresponds to the
input frequency is displayed as a graph.
The input circuit consists of an attenuator for input signal level
adjustment, and a pre-selector that prevents erroneous measurement by
reducing responses other than that of the reception signal. The IF stage
consists of an IF filter used to separate only the target frequency, an IF
amplifier with a gain stabilized across a wide level range, and a
logarithmic amplifier with excellent linearity. The MS2690A/MS2691A/
MS2692A employs a digital IF method in its IF stage to obtain superior
linearity and selectivity.

Chapter 1 Overview
1-6.

Chapter 2 Basic Operation
2-1
2
Basic Operation
This chapter describes the basic operation of the Spectrum Analyzer
function.
2.1 Display Description.......................................................2-2
2.2 Single/Continuous Sweep.............................................2-4
2.3 Setting Frequency.........................................................2-5
2.3.1 Setting center frequency ..................................2-9
2.3.2 Setting frequency span...................................2-10
2.3.3 Setting start frequency....................................2-11
2.3.4 Setting stop frequency....................................2-11
2.3.5 Setting frequency offset..................................2-12
2.3.6 Changing frequency band..............................2-12
2.3.7 Setting Whether To Couple Time Domain
Parameters and Frequency Domain
Parameters.....................................................2-13
2.3.8 Setting step size.............................................2-13
2.4 Setting Level...............................................................2-14
2.4.1 Setting reference level....................................2-19
2.4.2 Setting input attenuator ..................................2-20
2.4.3 Setting scale...................................................2-23
2.4.4 Setting reference level unit.............................2-25
2.4.5 Setting reference level offset..........................2-26
2.4.6 Pre-amp..........................................................2-27
2.4.7 Setting impedance..........................................2-27
2.4.8 Microwave Preselector Bypass......................2-28
2.5 Setting RBW/VBW......................................................2-29
2.5.1 Setting resolution bandwidth (RBW) ..............2-31
2.5.2 Setting video bandwidth (VBW)......................2-32
2.5.3 Setting Video VBW/Power VBW ....................2-33

Chapter 2 Basic Operation
2-2
2.1 Display Description
This section describes the main screen and main function menus of the
Spectrum Analyzer function.
Figure 2.1-1 Main screen of Spectrum Analyzer function

2.1 Display Description
2-3
2
Basic Operation
Pressing the when the Spectrum Analyzer function is selected in the
Application Switch menu displays the main function menu.
The main function menu consists of two pages, which can be toggled by
pressing .
Table 2.1-1 Main function menu
Function
Key Menu Display Function
Page1 Spectrum Analyzer Press Spectrum Analyzer to display this page.
F1 Frequency
Executes frequency setting and preselector auto
tuning. 2.3 “Setting Frequency”
F2 Span Sets the frequency span and frequency band.
2.3 “Setting Frequency”
F3 Amplitude Sets the level. 2.4 “Setting Level”
F4 BW
Sets the resolution bandwidth and video
bandwidth. 2.5 “Setting RBW/VBW”
F5 Marker Sets markers. 4.1 “Setting Marker”
F6 Trace Sets the trace. 3.1 “Setting Storage Mode”
F7 Trigger/Gate
Sets the trigger and gate.
Chapter 5 “Trigger Function and Gate Fu
nction”
F8 Time/Sweep
Sets the sweep time and trace points.
3.2 “Setting Time/Sweep”
Page2 Spectrum Analyzer
Press Spectrum Analyzer and then press to
display page 2.
F1 Peak Search
Sets the peak search execution and conditions.
4.2 “Setting Peak Search Function”
F2 Measure
Configures settings related to the Measure
function. Chapter 7 “Measure Function”
F7 Save on Event
Sets the Save on Event function that saves
Trace data upon occurrence of an event.
3.4 “Save on Event”
F8 Accessory Sets the other functions.
Chapter 8 “Other Functions”

Chapter 2 Basic Operation
2-4
2.2 Single/Continuous Sweep
There are two types of sweep, single and continuous.
(1) Single sweep
Press to execute sweep once. When the trigger function or gate
function is on, only 1 sweep is executed when the sweep start conditions
are met.
(2) Continuous sweep
Press to execute continuous sweep. When the trigger function or
gate function is on, sweep is executed every time the sweep start
conditions are met.
Figure 2.2-1 Single key and Continuous key