R&S®FSW MSRA
Multi-Standard Radio Analyzer
User Manual
(;ÙÎÅ2)
1175645502
Version 30
This manual applies to the following R&S®FSW models with firmware version 5.10 and later:
●
R&S®FSW8 (1331.5003K08 / 1312.8000K08)
●
R&S®FSW13 (1331.5003K13 / 1312.8000K13)
●
R&S®FSW26 (1331.5003K26 / 1312.8000K26)
●
R&S®FSW43 (1331.5003K43 / 1312.8000K43)
●
R&S®FSW50 (1331.5003K50 / 1312.8000K50)
●
R&S®FSW67 (1331.5003K67 / 1312.8000K67)
●
R&S®FSW85 (1331.5003K85 / 1312.8000K85)
This manual applies to the following R&S®FSW models with firmware version 3.20 and higher:
●
R&S®FSW8 (1312.8000K08)
●
R&S®FSW13 (1312.8000K13)
●
R&S®FSW26 (1312.8000K26)
●
R&S®FSW43 (1312.8000K43)
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R&S®FSW50 (1312.8000K50)
●
R&S®FSW67 (1312.8000K67)
●
R&S®FSW85 (1312.8000K85)
© 2022 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, Germany
Phone: +49 89 41 29 - 0
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.
1175.6455.02 | Version 30 | R&S®FSW MSRA
Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol, e.g. R&S®FSW is indicated as
R&S FSW. R&S®FSW Multi-Standard Radio Analyzer is indicated as R&S FSW MSRA.
R&S®FSW MSRA
1 Documentation overview.......................................................................7
1.1 Getting started manual................................................................................................. 7
1.2 User manuals and help.................................................................................................7
1.3 Service manual..............................................................................................................7
1.4 Instrument security procedures.................................................................................. 8
1.5 Printed safety instructions...........................................................................................8
1.6 Data sheets and brochures.......................................................................................... 8
1.7 Release notes and open-source acknowledgment (OSA).........................................8
1.8 Application notes, application cards, white papers, etc........................................... 8
2 Welcome to the MSRA operating mode............................................... 9
Contents
Contents
2.1 Starting the MSRA operating mode.............................................................................9
2.2 Understanding the display information.................................................................... 10
2.2.1 MSRA view....................................................................................................................12
2.2.2 MSRA primary...............................................................................................................13
2.2.3 MSRA secondary applications...................................................................................... 14
3 Typical applications............................................................................. 16
4 Measurements and result displays.................................................... 17
5 Applications and operating modes.................................................... 19
5.1 Available secondary applications..............................................................................20
5.2 Selecting the operating mode and secondary applications................................... 24
5.3 Using the sequencer in MSRA mode........................................................................ 26
6 MSRA basics........................................................................................ 28
6.1 Configuration...............................................................................................................28
6.2 Data acquisition.......................................................................................................... 29
6.3 Multi-standard analysis.............................................................................................. 30
6.4 Restrictions for secondary applications...................................................................32
6.5 Measurements in the time and frequency domain...................................................32
7 MSRA configuration.............................................................................34
7.1 Configuration overview.............................................................................................. 35
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7.2 Input source settings..................................................................................................37
7.2.1 Radio frequency input................................................................................................... 38
7.2.2 Settings for input from I/Q data files..............................................................................42
7.3 Amplitude.....................................................................................................................43
7.3.1 Amplitude settings.........................................................................................................43
7.3.2 Scaling the y-axis.......................................................................................................... 47
7.4 Frequency settings..................................................................................................... 49
7.5 Trigger settings........................................................................................................... 50
7.6 Data acquisition and bandwidth settings................................................................. 57
7.6.1 Data acquisition.............................................................................................................57
7.6.2 Sweep settings..............................................................................................................62
7.7 Output settings............................................................................................................65
7.8 Display configuration................................................................................................. 66
Contents
7.9 automatic settings...................................................................................................... 66
8 Analysis................................................................................................ 69
8.1 Configuring the analysis line..................................................................................... 69
9 How to perform measurements in MSRA mode................................71
10 Measurement example: analyzing MSR signals................................74
11 Remote commands to perform measurements in MSRA mode...... 83
11.1 Introduction................................................................................................................. 84
11.1.1 Conventions used in descriptions................................................................................. 84
11.1.2 Long and short form...................................................................................................... 85
11.1.3 Numeric suffixes............................................................................................................85
11.1.4 Optional keywords.........................................................................................................85
11.1.5 Alternative keywords..................................................................................................... 86
11.1.6 SCPI parameters...........................................................................................................86
11.2 Common suffixes........................................................................................................89
11.3 Activating MSRA measurements...............................................................................89
11.4 Configuring MSRA measurements............................................................................95
11.4.1 Configuring input/output and frontend settings............................................................. 95
11.4.2 Triggering.................................................................................................................... 139
11.4.3 Configuring data acquisition........................................................................................148
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11.4.4 Adjusting settings automatically.................................................................................. 154
11.5 Capturing data and performing sweeps................................................................. 156
11.6 Retrieving results......................................................................................................162
11.7 Querying the status registers.................................................................................. 165
11.7.1 STATus:OPERation register........................................................................................166
11.7.2 Commands to query the STATus:OPERation register.................................................167
11.8 Analyzing MSRA measurements............................................................................. 168
11.9 Commands specific to MSRA secondary applications......................................... 168
11.10 Programming example: analyzing MSR signals.................................................... 171
A Reference: format description for I/Q data files..............................174
B Formats for returned values: ASCII format and binary format...... 176
Contents
Annex.................................................................................................. 174
C Sample rate and maximum usable I/Q bandwidth for RF input..... 177
C.1 Available bandwidth extension options..................................................................178
C.2 Relationship between sample rate, record length and usable I/Q bandwidth.....178
C.3 R&S FSW without additional bandwidth extension options................................. 180
C.4 R&S FSW with I/Q bandwidth extension option B40 or U40................................. 181
C.5 R&S FSW with I/Q bandwidth extension option B80 or U80................................. 181
C.6 R&S FSW with activated I/Q bandwidth extension option B160 or U160............ 181
C.7 R&S FSW with activated I/Q bandwidth extension option B320/U320................. 182
C.8 R&S FSW with activated I/Q bandwidth extension option B512...........................184
C.9 R&S FSW with activated I/Q bandwidth extension option B1200.........................185
C.10 R&S FSW with activated I/Q bandwidth extension option B2001.........................188
C.11 R&S FSW with activated I/Q bandwidth extension option B2000.........................190
C.12 R&S FSW with activated I/Q bandwidth extension option B5000.........................191
D Sample rates and bandwidths for digital I/Q data...........................192
List of Commands (MSRA)................................................................195
Index....................................................................................................199
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Contents
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1 Documentation overview
1.1 Getting started manual
Documentation overview
Service manual
This section provides an overview of the R&S FSW user documentation. Unless specified otherwise, you find the documents on the R&S FSW product page at:
www.rohde-schwarz.com/manual/FSW
Introduces the R&S FSW and describes how to set up and start working with the product. Includes basic operations, typical measurement examples, and general information, e.g. safety instructions, etc.
A printed version is delivered with the instrument. A PDF version is available for download on the Internet.
1.2 User manuals and help
Separate user manuals are provided for the base unit and the firmware applications:
●
Base unit manual
Contains the description of all instrument modes and functions. It also provides an
introduction to remote control, a complete description of the remote control commands with programming examples, and information on maintenance, instrument
interfaces and error messages. Includes the contents of the getting started manual.
●
Firmware application manual
Contains the description of the specific functions of a firmware application, including remote control commands. Basic information on operating the R&S FSW is not
included.
The contents of the user manuals are available as help in the R&S FSW. The help
offers quick, context-sensitive access to the complete information for the base unit and
the firmware applications.
All user manuals are also available for download or for immediate display on the Internet.
1.3 Service manual
Describes the performance test for checking the rated specifications, module replacement and repair, firmware update, troubleshooting and fault elimination, and contains
mechanical drawings and spare part lists.
The service manual is available for registered users on the global Rohde & Schwarz
information system (GLORIS):
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1.4 Instrument security procedures
1.5 Printed safety instructions
1.6 Data sheets and brochures
Documentation overview
Application notes, application cards, white papers, etc.
https://gloris.rohde-schwarz.com
Deals with security issues when working with the R&S FSW in secure areas. It is available for download on the Internet.
Provides safety information in many languages. The printed document is delivered with
the product.
The data sheet contains the technical specifications of the R&S FSW. It also lists the
firmware applications and their order numbers, and optional accessories.
The brochure provides an overview of the instrument and deals with the specific characteristics.
See www.rohde-schwarz.com/brochure-datasheet/FSW
1.7 Release notes and open-source acknowledgment (OSA)
The release notes list new features, improvements and known issues of the current
firmware version, and describe the firmware installation.
The open-source acknowledgment document provides verbatim license texts of the
used open source software.
See www.rohde-schwarz.com/firmware/FSW
1.8 Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on particular topics.
See www.rohde-schwarz.com/application/FSW
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2 Welcome to the MSRA operating mode
Welcome to the MSRA operating mode
Starting the MSRA operating mode
The MSRA operating mode is part of the standard R&S FSW firmware and adds functionality to perform multi-standard radio analysis.
The R&S FSW MSRA operating mode features:
●
Analysis of the same I/Q data in more than one application
●
Analysis of correlated effects due to multiple standards
●
Configuration of data acquisition settings only required once for all applications
●
Overview of all results in one screen in addition to large display of individual results
●
Common analysis line (time marker) across all applications
●
Performing measurements in the frequency and time domain (such as channel
power measurements) on I/Q data
This user manual contains a description of the functionality specific to the MSRA operating mode, including remote control operation.
All functions not discussed in this manual are the same as in Signal and Spectrum
Analyzer mode and are described in the R&S FSW User Manual. The latest version is
available for download at the product homepage
http://www.rohde-schwarz.com/product/FSW.html.
Additional information
An application note discussing efficient measurements using the MSRA operating
mode is available from the Rohde & Schwarz website:
1EF83: Using the R&S®FSW for Efficient Measurements on Multi- Standard Radio
Base Stations (MSRA)
2.1 Starting the MSRA operating mode
MSRA is a new operating mode on the R&S FSW.
To activate the MSRA operating mode
1. Select the [MODE] key.
A dialog box opens that contains all operating modes and applications currently
available on your R&S FSW.
2. Select the "Multi Standard Radio Analyzer" tab.
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Welcome to the MSRA operating mode
Understanding the display information
3. Confirm the message informing you that you are changing operating modes.
The R&S FSW closes all active measurement channels in the current operating
mode, then opens a new measurement channel for the MSRA operating mode.
In addition to the "MSRA View", an "MSRA Primary" tab is displayed.
The Sequencer is automatically activated in continuous mode (see Chapter 5.3,
"Using the sequencer in MSRA mode", on page 26), starting an I/Q Analyzer data
acquisition with the default settings (but with a "Spectrum" result display). It can be
configured in the MSRA "Overview" dialog box, which is displayed when you select
the "Overview" softkey from any menu (see Chapter 7, "MSRA configuration",
on page 34).
Remote command:
INST:MODE MSR, see INSTrument:MODE on page 92
2.2 Understanding the display information
The following figure shows a screen display during MSRA operation. All different information areas are labeled. They are explained in more detail in the following sections.
●
The orange background of the screen behind the measurement channel tabs indicates that you are in MSRA operating mode.
●
●
An orange "IQ" indicates that the results displayed in the MSRA secondary application(s) no longer match the data captured by the MSRA primary. The "IQ" disappears
after the results in the secondary application(s) are refreshed.
icon on the tab label indicates that the displayed trace (e.g. in an MSRA
The
secondary application) no longer matches the currently captured data. This may be
the case, for example, if a data acquisition was performed in another secondary
application. As soon as the result display is refreshed, the icon disappears.
The icon indicates that an error or warning is available for that measurement
channel. This is particularly useful if the MSRA View tab is displayed.
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Welcome to the MSRA operating mode
Understanding the display information
2 3 41 5 6
1 = MSRA View (overview of all active channels in MSRA mode)
2 = MSRA Primary (data acquisition channel with global configuration settings)
3 = Measurement channel tab for individual MSRA secondary application
4 = Channel bar with firmware and measurement settings for selected channel
5 = Window title bar with diagram-specific (trace) information and analysis interval
6 = Diagram area
7 = Diagram footer with diagram-specific information, depending on evaluation
The diagram area varies depending on the type of measurement channel, as described
in detail in the following topics.
Window title bar information
For each diagram, the header provides the following information:
1
2 6
8
Figure 2-1: Window title bar information in MSRA mode
3 4
5
7
7
1 = Window number
2 = Window type
3 = Trace color
4 = Trace number
5 = Detector
6 = Trace mode
7 = Analysis line indication
8 = Analysis interval
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Welcome to the MSRA operating mode
Understanding the display information
Diagram footer information
The information in the diagram footer (beneath the diagram) depends on the evaluation:
●
Center frequency
●
Number of sweep points
●
Range per division (x-axis)
●
Span (Spectrum)
Status bar information
Global instrument settings, the instrument status and any irregularities are indicated in
the status bar beneath the diagram. Furthermore, the progress of the current operation
is displayed in the status bar.
If an error or warning is available for a measurement channel, the icon is displayed
next to the tab label in the channel bar.
2.2.1 MSRA view
The MSRA View is an overview of all active channels in MSRA mode, similar to the
MultiView tab in Signal and Spectrum Analyzer mode. At the top of the screen the
MSRA Primary is displayed, i.e. the application that captures data. Beneath the MSRA
Primary, all active secondary applications are displayed in individual windows. Each
secondary application has its own channel bar with the current settings as well as a
button in order to switch to that secondary application tab directly.
The MSRA View displays the following basic elements:
1 2
3
4
5
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2.2.2 MSRA primary
Welcome to the MSRA operating mode
Understanding the display information
1 = Channel information bar for the MSRA Primary
2 = Secondary application data coverage for each active secondary application
3 = Result display for MSRA Primary (for entire capture buffer)
4 = Channel information bar for secondary application with button to switch to secondary application tab
5 = Result display for secondary application (for analysis interval)
The MSRA primary is the only channel that captures data. It also controls global configuration settings for all secondary applications. The MSRA primary channel itself is
implemented as an I/Q Analyzer secondary application. The MSRA primary measurement channel cannot be deleted or replaced.
The following figure shows the screen elements specific to the MSRA primary.
1
2
3
4
1
= Channel information bar for the MSRA Primary
2 = Data coverage for each active secondary application
3 = Result display for MSRA Primary (for entire capture buffer)
4 = Analysis line
Channel bar information
The channel bar shows the firmware and measurement information for data acquisition
and global configuration.
Table 2-1: Information displayed in the channel bar for the MSRA Primary
Ref Level Reference level
(m.+el.)Att (Mechanical and electronic) RF attenuation
Ref Offset Reference level offset
Freq Center frequency
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Welcome to the MSRA operating mode
Understanding the display information
AQT Defined measurement time, i.e. the duration of data acquisition to the cap-
ture buffer
Rec Length Defined record length (number of samples to capture)
SRate Defined sample rate for data acquisition
RBW (Spectrum evaluation only) Resolution bandwidth calculated from the
sample rate and record length
In addition, the channel bar also displays information on instrument settings that affect
the measurement results even though this is not immediately apparent from the display
of the measured values (e.g. transducer or trigger settings). This information is displayed only when applicable for the current measurement. For details see the
R&S FSW Getting Started manual.
Data coverage for each active secondary application
Each secondary application obtains an extract of the data captured by the MSRA primary (see also Chapter 6.3, "Multi-standard analysis", on page 30). Generally, if a signal contains data channels for multiple standards, the individual secondary applications
are used to analyze the channel for the corresponding standard. Thus, it is of interest
to know which secondary application is analyzing which part of the captured data, or
more precisely, which data channel. The MSRA Primary display indicates the data covered by each secondary application, restricted to the channel bandwidth used by the
corresponding standard, by vertical blue lines labeled with the secondary application
name. For secondary applications that support several standards (e.g. VSA, LTE) an
estimated or user-defined bandwidth is indicated.
2.2.3 MSRA secondary applications
The data captured by the MSRA primary measurement (or only parts of it) can be evaluated by various secondary applications. The measurement channel for each secondary application contains the settings and results for the secondary application data
extract from the capture buffer.
The following figure shows the screen elements specific to the MSRA secondary application tabs.
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Welcome to the MSRA operating mode
Understanding the display information
1
2
3
4
1 = Channel information bar for secondary application
2 = Analysis interval for current evaluation
3 = Result display for analysis interval
4 = Analysis line
The display for the individual MSRA secondary applications is identical to the display in
Signal and Spectrum Analyzer mode except for the following differences:
●
The analysis interval indicates which part of the capture buffer is being evaluated
and displayed in each window.
●
The acquisition time indicated in the channel bar (Meas Time) indicates the analyzed measurement time, not the captured time.
●
Any bandwidth or sample rate values refer to the secondary application data, not to
the actual data acquisition from the input signal.
●
The analysis line for time-based displays is only available in MSRA mode. It represents a common time marker in all secondary applications whose analysis interval
includes that time (see "Analysis line" on page 31).
For details on the individual secondary application displays see the corresponding
User Manuals for those applications.
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3 Typical applications
Typical applications
The technological advances made in the field of mobile radio have given rise to a wide
variety of standards over the past several decades. These standards, which include
those produced by the global cooperative for standardization – the 3rd Generation
Partnership Project (3GPP) – are based on various transmission technologies. Network operators can deploy GSM/EDGE, WCDMA, TD-SCDMA and LTE or combinations of these four standards.
To handle these complex scenarios, the Multistandard Radio Base Station (MSR-BS)
was developed. These can transmit and receive multiple standards simultaneously on
various carriers. An MSR-BS combines at least two different radio access technologies
(RAT).
Specifications and Tests
3GPP has published the specifications TS 37.141 and TS 37.104 for multistandard
base stations. The latter describes the minimum requirements for multistandard base
stations in terms of RF requirements for the downlink and uplink. TS 37.141 defines
the tests and test requirements for the MSR-BS based on these RF requirements.
To allow for efficient MSR-BS testing, TS 37.141 includes test configurations. The goal
of these test configurations is to significantly reduce the complexity of the many possible test scenarios. They are limited to the worst-case scenarios with the strictest criteria. Thus, for example, a test configuration is provided for receiver tests in which two
signals – a GSM carrier and an LTE carrier with a BW
at the lower and upper edge of BWRF while maintaining F
tests to be performed with a configuration that fully utilizes the maximum bandwidth
BWRF of the MSR-BS.
MSR-BS Testing using R&S FSW Multi-Standard Radio Analysis
The newly introduced R&S FSW MSRA mode allows you to capture signals from a
multistandard base station and analyze the same data in various standard applications.
= 5 MHz – are positioned
Channel
offset-RAT
. This allows receiver
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4 Measurements and result displays
Measurements and result displays
MSRA measurement
The only true measurement in MSRA mode in which I/Q data from the input signal is
captured and stored is performed by the MSRA primary application. This data acquisition is performed as in the I/Q Analyzer application, i.e. a specified frequency span of
the input signal is swept for a specified measurement time. The captured I/Q data can
then be analyzed in various different applications.
Result displays
The data that was captured by the MSRA primary can be evaluated in various different
applications. All evaluation modes available for the MSRA applications are displayed in
the selection bar in SmartGrid mode.
For details on working with the SmartGrid see the R&S FSW Getting Started manual.
The result displays available in MSRA mode are those described for the individual
applications. The MSRA primary is implemented as an I/Q Analyzer application and
has the same result displays.
See the R&S FSW I/Q Analyzer User Manual for a description of the result displays
available for the I/Q Analyzer and thus the MSRA primary.
Measurements in the time and frequency domain
The I/Q Analyzer secondary application (not primary) in MSRA mode can also perform
measurements on the captured I/Q data in the time and frequency domain (see also
Chapter 6.5, "Measurements in the time and frequency domain", on page 32).
This allows you to perform standard-specific and general power measurements (such
as ACLR or SEM) or statistical evaluations, as well as analyzing the EVM or modulation accuracy, on the same captured I/Q data.
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Measurements and result displays
Time and frequency-based measurements are configured using the same settings and
provide similar results as in the Spectrum application. In addition, the analysis interval
used for the measurement is indicated as in all MSRA applications.
The time and frequency domain measurements and the available results are described
in detail in the R&S FSW User Manual.
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5 Applications and operating modes
Applications and operating modes
The R&S FSW provides several applications for different analysis tasks and different
types of signals, e.g. WCDMA, I/Q analysis or basic spectrum analysis. When you activate an application, a new measurement channel is created which determines the
measurement settings for that application. The same application can be activated with
different measurement settings by creating several channels for the same application.
Each channel is displayed in a separate tab on the screen.
The maximum number can be limited further by the available memory on the instrument.
Independent vs correlating measurements
With the conventional R&S FSW signal and spectrum analyzer, you can perform
several different measurements almost simultaneously. However, the individual measurements are independent of each other - each application captures and evaluates
its own set of data, regardless of what the other applications do.
Sometimes, it can be useful to analyze the exact same input data using different
applications. For example, imagine capturing data from a base station and analyzing
the RF spectrum in the Modulation Analysis application. If a spur or an unexpected
peak occurs, possibly you want to analyze the same data in the I/Q Analyzer. There,
you see the real and imaginary components of the signal and can thus detect the reason for the irregular signal. Normally, when you switch to a different application, evaluation is performed on the data that was captured by that application, and not the previous one. In our example, the irregular signal is lost. Therefore, a second operating
mode is available in the R&S FSW: Multistandard radio analyzer (MSRA) mode.
Multistandard radio analyzer mode
In multistandard radio analyzer (MSRA) mode, data acquisition is performed once
as an I/Q measurement by a primary application. The captured data is then evaluated
by any number of secondary applications for different radio standards. Data acquisition
and global configuration settings are controlled globally, while the evaluation and display settings can be configured individually for each secondary application. Using the
multistandard radio analyzer, unwanted correlations between different signal components using different transmission standards can be detected. Thus, for example, an
irregularity in a GSM burst can be examined closer in the R&S FSW 3G FDD BTS
(WCDMA) secondary application. There you can analyze dependencies like a change
in the EVM value.
Multi-Standard Real-Time mode
To combine the advantages of the MSRA mode with its correlated measurements and
the gapless results provided by real-time measurements, a third operating mode has
been introduced: the Multi-Standard Real-Time (MSRT) mode. This operating mode
is only available if one of the real-time options (R&S FSW-B160R/-K160RE/-U160R) is
installed.
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Applications and operating modes
Available secondary applications
In this operating mode, data acquisition is performed once as a real-time measurement, and the captured data is then evaluated by any number of secondary applications. Thus, you can perform a real-time measurement triggered with a frequency
mask. Then you evaluate the results in the VSA secondary application, for example, to
detect the cause of a frequency exception.
Distinct operating modes
Although the applications themselves are identical in all operating modes, the handling
of the data between applications is not. Thus, the operating mode determines which
secondary applications are available and active. Whenever you change the operating
mode, the currently active measurement channels are closed. The default operating
mode is "Signal and Spectrum Analyzer" mode; however, the presetting can be
changed.
Remote command:
INST:MODE MSR, see INSTrument:MODE on page 92
Switching between applications
When you switch to a new application, a set of parameters is passed on from the current application to the new one:
●
Center frequency and frequency offset
●
Reference level and reference level offset
●
Attenuation
After initial setup, the parameters for the measurement channel are stored upon exiting
and restored upon re-entering the channel. Thus, you can switch between applications
quickly and easily.
5.1 Available secondary applications
Not all options available for the R&S FSW are supported as secondary applications in
the MSRA mode. The supported secondary applications are listed here. Note that
some of the applications are provided with the base unit, while others are available
only if the corresponding firmware options are installed.
Currently, only applications for base-station tests and applications that process I/Q
data are supported in MSRA mode, in particular:
1xEV-DO BTS...............................................................................................................21
3G FDD BTS.................................................................................................................21
5G NR........................................................................................................................... 21
AM/FM/PM Modulation Analysis................................................................................... 21
cdma2000 BTS............................................................................................................. 22
GSM..............................................................................................................................22
I/Q Analyzer.................................................................................................................. 22
LTE................................................................................................................................22
NB-IoT...........................................................................................................................22
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Applications and operating modes
Available secondary applications
OFDM Vector Signal Analysis (OFDM VSA).................................................................23
OneWeb........................................................................................................................23
Pulse Measurements.................................................................................................... 23
TD-SCDMA BTS........................................................................................................... 23
Transient Analysis.........................................................................................................23
Verizon 5GTF measurement application (V5GTF)........................................................24
Vector Signal Analysis (VSA)........................................................................................24
WLAN............................................................................................................................24
1xEV-DO BTS
The 1xEV-DO BTS secondary application requires an instrument equipped with the
1xEV-DO BTS measurements option, R&S FSW-K84. This secondary application provides test measurements for 1xEV-DO BTS downlink signals (base station signals)
according to the test specification.
RF measurements are not supported in MSRA mode.
For details, see the R&S FSW 1xEV-DO user manual.
Remote command:
INST:SEL BDO, see INSTrument[:SELect] on page 93
3G FDD BTS
The 3G FDD BTS secondary application requires an instrument equipped with the
3GPP base station measurements option, R&S FSW-K72. This secondary application
provides test measurements for WCDMA downlink signals (base station signals)
according to the test specification.
RF measurements are not supported in MSRA mode.
For details, see the R&S FSW 3G FDD user manual.
Remote command:
INST:SEL BWCD, see INSTrument[:SELect] on page 93
5G NR
The 3GPP 5G NR secondary application requires an instrument equipped with one of
the 3GPP 5G NR measurements option, R&S FSW-K144. This secondary application
provides test measurements for 3GPP 5G NR downlink and uplink signals (base station signals) according to the test specification.
For details see the user manuals for the 5G NR downlink and uplink measurement
application.
Remote command:
INST:SEL 5GNR, see INSTrument[:SELect] on page 93
AM/FM/PM Modulation Analysis
The AM/FM/PM Modulation Analysis secondary application requires an instrument
equipped with the corresponding optional software. This secondary application provides measurement functions for demodulating AM, FM, or PM signals.
For details, see the R&S FSW AM/FM/PM Modulation Analysis user manual.
Remote command:
INST:SEL ADEM, see INSTrument[:SELect] on page 93
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Applications and operating modes
Available secondary applications
cdma2000 BTS
The cdma2000 BTS secondary application requires an instrument equipped with the
cdma2000 BTS measurements option, R&S FSW-K82. This secondary application provides test measurements for cdma2000 BTS downlink signals (base station signals)
according to the test specification.
RF measurements are not supported in MSRA mode.
For details, see the R&S FSW cdma2000 user manual.
Remote command:
INST:SEL BC2K, see INSTrument[:SELect] on page 93
GSM
The GSM secondary application requires an instrument equipped with the corresponding optional software. This secondary application provides measurement functions for
measuring GSM signals.
For details, see the R&S FSW GSM user manual.
Remote command:
INST:SEL GSM, see INSTrument[:SELect] on page 93
I/Q Analyzer
The I/Q Analyzer secondary application provides measurement and display functions
for I/Q signals. Evaluation of the captured I/Q data in the frequency and time domain is
also possible.
For details, see the R&S FSW I/Q Analyzer user manual.
Remote command:
INST:SEL IQ, see INSTrument[:SELect] on page 93
LTE
The LTE secondary application requires an instrument equipped with one of the LTE
options, R&S FSW-K10x. This secondary application provides test measurements for
LTE downlink and uplink signals according to the test specification.
Frequency sweep measurements are not supported in MSRA mode.
For details, see the R&S FSW LTE downlink and uplink user manual.
For details see the user manuals for the LTE downlink and uplink measurement appli-
cation.
Remote command:
INST:SEL LTE, see INSTrument[:SELect] on page 93
NB-IoT
The NB-IoT application requires an instrument equipped with the NB-IoT measurements option R&S FSW-K106. This application provides NB-IoT measurements in the
downlink.
For details, see the R&S FSW-K106 (NB-IoT downlink) user manual.
Remote command:
INST:SEL NIOT, see INSTrument[:SELect] on page 93
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Applications and operating modes
Available secondary applications
OFDM Vector Signal Analysis (OFDM VSA)
The OFDM VSA application requires the OFDM Vector Signal Analysis option,
R&S FSW-K96, to be installed. This application provides measurements and evaluations for OFDM Vector Signal Analysis.
For details see the R&S FSW-K96 User Manual.
Remote command:
INST:SEL OFDMVSA, see INSTrument[:SELect] on page 93
OneWeb
The OneWeb application requires an instrument equipped with the OneWeb measurements option R&S FSW-K201. This application provides OneWeb reverse link measurements.
For details, see the R&S FSW-K201 (OneWeb reverse link measurements) user manual.
Remote command:
INST:SEL OWEB, see INSTrument[:SELect] on page 93
Pulse Measurements
The Pulse measurements secondary application requires an instrument equipped with
the pulse measurements option, R&S FSW-K6. This secondary application provides
measurement functions for pulsed signals.
For details, see the R&S FSW-K6 user manual.
Remote command:
INST:SEL PULSE, see INSTrument[:SELect] on page 93
TD-SCDMA BTS
The TD-SCDMA BTS secondary application requires an instrument equipped with the
TD-SCDMA BTS measurements option, R&S FSW-K82. This secondary application
provides test measurements for TD-SCDMA BTS downlink signals (base station signals) according to the test specification.
RF measurements are not supported in MSRA mode.
For details, see the R&S FSW TD-SCDMA user manual.
Remote command:
INST:SEL BTDS, see INSTrument[:SELect] on page 93
Transient Analysis
The Transient Analysis secondary application requires an instrument equipped with the
Transient Analysis option, R&S FSW-K60. This secondary application provides measurements and evaluations for Transient Analysis.
For details, see the R&S FSW-K60 user manual.
Remote command:
INST:SEL TA, see INSTrument[:SELect] on page 93
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Applications and operating modes
Selecting the operating mode and secondary applications
Verizon 5GTF measurement application (V5GTF)
The Verizon 5GTF measurement application requires an instrument equipped with the
V5GTF option, R&S FSW-K118/K119. This application provides measurements and
evaluations for uplink and downlink signals according to the Verizon 5G technical
forum (TS V5G.211 standard).
For details, see the R&S FSW-K118/-K119 user manual.
Remote command:
INST:SEL V5GT, see INSTrument[:SELect] on page 93
Vector Signal Analysis (VSA)
The VSA secondary application requires an instrument equipped with the Vector Signal
Analysis option, R&S FSW-K70. This secondary application provides measurements
and evaluations for single-carrier digitally modulated signals.
For details, see the R&S FSW VSA user manual.
Remote command:
INST:SEL DDEM, see INSTrument[:SELect] on page 93
WLAN
The WLAN application requires an instrument equipped with the WLAN option,
R&S FSW-K91/91n. This application provides measurements and evaluations according to the WLAN IEEE 802.11 standards.
For details see the R&S FSW-K91 User Manual.
Remote command:
INST:SEL WLAN, see INSTrument[:SELect] on page 93
5.2 Selecting the operating mode and secondary applications
Access: [MODE]
The default operating mode is "Signal and Spectrum Analyzer" mode, however, the
presetting can be changed.
(See the "Instrument Setup" section in the R&S FSW user manual).
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Applications and operating modes
Selecting the operating mode and secondary applications
Switching the operating mode.......................................................................................25
Selecting an MSRA secondary application................................................................... 25
└ New Channel.................................................................................................. 25
└ Replace Current Channel............................................................................... 26
Closing an application...................................................................................................26
Switching the operating mode
To switch the operating mode, select the corresponding tab (see Chapter 2.1, "Starting
the MSRA operating mode", on page 9).
Remote command:
INSTrument:MODE on page 92
Selecting an MSRA secondary application
To start a new or replace an existing secondary application, select the corresponding
button in the correct tab.
Remote command:
INSTrument[:SELect] on page 93
New Channel ← Selecting an MSRA secondary application
The secondary application selected on this tab is started in a new channel, i.e. a new
tab in the display.
Remote command:
INSTrument:CREate[:NEW] on page 90
INSTrument[:SELect] on page 93
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5.3 Using the sequencer in MSRA mode
Applications and operating modes
Using the sequencer in MSRA mode
Replace Current Channel ← Selecting an MSRA secondary application
The secondary application selected on this tab is started in the currently displayed
channel, replacing the current secondary application.
Remote command:
INSTrument:CREate:REPLace on page 90
Closing an application
To close an application, simply close the corresponding tab by selecting the "x" next to
the channel name.
Remote command:
INSTrument:DELete on page 91
When you switch to MSRA mode, the Sequencer is automatically activated in continuous mode. Unless it is stopped or you select a different Sequencer mode, the
R&S FSW continuously performs the following tasks:
1. The MSRA primary application acquires data.
2. The active secondary applications evaluate the data one after the other.
3. The display in the tab is updated.
This behavior is identical to "Signal and Spectrum Analyzer" mode (also for single
sequence or channel-defined Sequencer modes).
However, if you switch the Sequencer off, the behavior of the sweep functions is
slightly different to "Signal and Spectrum Analyzer" mode (see also "Performing
sweeps" on page 29):
●
If continuous sweep is active (default) and you switch to a different secondary
application, continuous sweep is aborted. Thus, the same data is evaluated in different secondary applications without overwriting the data in the capture buffer. You
can start continuous sweep again as usual.
●
Only the secondary application that is currently displayed when a measurement is
performed is updated automatically. A new "Refresh" function is available to update
the display in one or all other secondary applications.
For details on the Sequencer function, see the R&S FSW user manual.
The "Sequencer" menu is available from the toolbar.
Sequencer State
Activates or deactivates the Sequencer. If activated, sequential operation according to
the selected Sequencer mode is started immediately.
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Applications and operating modes
Using the sequencer in MSRA mode
Remote command:
SYSTem:SEQuencer on page 161
INITiate:SEQuencer:IMMediate on page 159
INITiate:SEQuencer:ABORt on page 159
Sequencer Mode
Defines how often which measurements are performed. The currently selected mode
softkey is highlighted blue. During an active Sequencer process, the selected mode
softkey is highlighted orange.
"Single Sequence"
Each measurement is performed once, until all measurements in all
active channels have been performed.
"Continuous Sequence"
The measurements in each active channel are performed one after
the other, repeatedly, in the same order, until sequential operation is
stopped.
This is the default Sequencer mode.
"Channel Defined Sequence"
First, a single sequence is performed. Then, only channels in continuous sweep mode are repeated.
Remote command:
INITiate:SEQuencer:MODE on page 160
Refresh All
This function is only available if the Sequencer is deactivated, no sweep is currently
running, and only in MSRA mode.
The data in the capture buffer is re-evaluated by all active secondary applications, for
example after a new sweep was performed while the Sequencer was off.
Note: To update only the displays in the currently active secondary application, use the
"Refresh" function in the "Sweep" menu for that secondary application (see "Refresh
(MSRA only)" on page 63).
Remote command:
INITiate:SEQuencer:REFResh[:ALL] on page 160
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6 MSRA basics
6.1 Configuration
MSRA basics
Configuration
Some background knowledge on basic terms and principles used in MSRA operating
mode is provided here for a better understanding of the required configuration settings.
Primary parameters
In MSRA mode, only the MSRA primary performs a data acquisition. Thus, all parameters that determine how the I/Q data is captured from the I/Q channel can only be configured in the "MSRA Primary" tab. In all secondary application tabs, these settings are
deactivated (or have a different meaning).
Typical primary parameters include:
●
Sample rate
●
Record length
●
Bandwidth
●
Center frequency
●
Reference level
●
Trigger settings
●
External reference
●
Impedance, preamplification, attenuation
Channel-specific parameters
Each secondary application, however, can define all parameters concerning analysis
individually.
Typical channel-specific parameters include:
●
Center frequency, duration and number of trace points for the secondary application data extract
●
Offset of the secondary application data extract from the trigger event
●
Evaluation methods
●
Range and scaling
●
Trace mode
●
Marker positions
Conflicting parameters
Primary and channel-specific parameters can be configured independantly of one
another, in any order that is convenient to you. However, there are dependencies
between the parameters, as the secondary applications can only evaluate data that
has been captured by the MSRA primary previously. Thus, configuring parameters is
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6.2 Data acquisition
MSRA basics
Data acquisition
not restricted, but you are informed about the violation of possible restrictions by error
messages in the status bar of the secondary applications where necessary.
As mentioned before, only the MSRA primary performs a data acquisition. Thus, the
MSRA primary defines the center frequency, sample rate and record length of the captured I/Q data. It also defines the trigger event, thus all secondary applications have
the same trigger. However, an offset from the trigger can be defined by the individual
secondary applications (see "Trigger offset vs. capture offset" on page 31).
Performing sweeps
When you switch to MSRA mode, the Sequencer is automatically activated in continuous mode. The MSRA primary continuously performs a data acquisition. If any secondary applications are activated, then after each measurement, the data in the active
secondary applications is evaluated one after the other. The MSRA primary will then
repeat the data acquisition and evaluate the new data etc. The channel displays are
updated after each measurement or evaluation.
Alternatively, you can perform measurements manually. You can start a single or continuous sweep from any secondary application, which updates the data in the capture
buffer and the results in the current secondary application. The results in the other secondary applications, however, remain unchanged. You must refresh them manually,
either individually or all at once, using a "Refresh" function.
Note that in continuous sweep mode, sweeping is aborted when you switch to a different secondary application. You can then continue sweeping from there. This is necessary in order to evaluate the same data in different secondary applications without
overwriting the data in the capture buffer.
In single sweep mode, only one sweep is performed; a sweep count is not available neither for the MSRA primary, nor for the secondary applications. However, depending
on the secondary application, a statistics count may be available for statistics based on
a single data acquisition. Trace averaging is performed as usual for sweep count = 0,
the current trace is averaged with the previously stored averaged trace.
Data availability
The secondary applications can only receive data that is available in the capture buffer.
As soon as data has been stored to the capture buffer successfully, a status bit (#9) in
the STAT:OPER register is set. If the required secondary application data is not available, an error message is displayed. Details on restrictions are described in Chapter 6.4,
"Restrictions for secondary applications", on page 32.
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6.3 Multi-standard analysis
MSRA basics
Multi-standard analysis
Secondary application data
The secondary applications receive data for analysis from the capture buffer, if necessary resampled or with filters applied. The secondary applications can define their own
center frequency, sample rate and record length for their secondary application data,
which is an extract of the capture buffer data. The secondary applications may not
request more sample points than the captured data contains, or samples from a frequency outside the range of the capture buffer, for example.
Generally, if a signal contains data channels for multiple standards, the individual secondary applications are used to analyze the channel for the corresponding standard.
Thus, it is of interest to know which secondary application, or more precisely: which
data channel is analyzing which part of the captured data and how each data channel
is correlated (in time) to others.
The MSRA primary display indicates the data covered by each secondary application,
restricted to the channel bandwidth used by the corresponding standard, by vertical
blue lines labeled with the secondary application name. For secondary applications
that support several standards (e.g. VSA, LTE) an estimated or user-defined bandwidth
is indicated.
Figure 6-1: MSRA primary indicating covered bandwidth for 4 secondary applications
Analysis interval
Each secondary application receives an extract of the data from the capture buffer.
However, the individual evaluation methods of the secondary application need not analyze the complete data range. Some secondary applications allow you to select a specific part of the data for analysis, e.g. an individual frame, burst or pulse, or to use an
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