R&S SMW-K555 Manuale utente
R&S®SMW-K555
Bandwidth Extension
User Manual
1179577602
Version 01
(;ÝÇÚ2)
This document describes the following software options and accessory options:
●R&S®SMW-K555 Bandwidth Extension (1414.6229.xx)
●R&S®SMW-ZKK Combiner Kit 40 GHz (1434.7908.02)
●R&S®SMW-ZKV Combiner Kit 67 GHz (1434.7989.02)
© 2022 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, Germany
Phone: +49 89 41 29 - 0
Email: [email protected]
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.
1179.5776.02 | Version 01 | R&S®SMW-K555
The following abbreviations are used throughout this manual: R&S®SMW200A is abbreviated as R&S SMW.
Contents
R&S®SMW-K555
3User Manual 1179.5776.02 ─ 01
Contents
1 Welcome to the Bandwidth Extension option..................................... 5
1.1 Key features...................................................................................................................5
1.2 Accessing the Bandwidth Extension dialog...............................................................5
1.3 Documentation overview..............................................................................................6
1.3.1 Getting started manual....................................................................................................6
1.3.2 User manuals and help................................................................................................... 6
1.3.3 Tutorials...........................................................................................................................6
1.3.4 Service manual............................................................................................................... 6
1.3.5 Instrument security procedures.......................................................................................7
1.3.6 Printed safety instructions............................................................................................... 7
1.3.7 Data sheets and brochures............................................................................................. 7
1.3.8 Release notes and open source acknowledgment (OSA).............................................. 7
1.3.9 Application notes, application cards, white papers, etc...................................................7
1.4 Scope............................................................................................................................. 8
1.5 Notes on screenshots...................................................................................................8
2 About the Bandwidth Extension option...............................................9
2.1 Required options...........................................................................................................9
2.2 About Bandwidth Extension........................................................................................ 9
3 Extending the bandwidth.................................................................... 12
3.1 Test setups...................................................................................................................12
3.1.1 Single R&S SMW with sensor.......................................................................................13
3.1.2 Single R&S SMW with signal analyzer..........................................................................13
3.2 Connecting the R&S SMW..........................................................................................14
3.3 Configuring the R&S SMW......................................................................................... 17
3.4 Generating signals with extended bandwidth..........................................................25
4 Bandwidth Extension settings............................................................28
4.1 General settings.......................................................................................................... 28
4.2 Setup file editor settings............................................................................................ 31
4.2.1 Common settings.......................................................................................................... 31
4.2.2 RF ports settings........................................................................................................... 32
Contents
R&S®SMW-K555
4User Manual 1179.5776.02 ─ 01
4.2.3 Align RF ports configuration settings............................................................................ 34
4.3 Setup info and alignment settings............................................................................ 36
4.4 Align setup wizard settings........................................................................................38
5 Remote control commands.................................................................40
5.1 General commands.....................................................................................................41
5.2 Alignment commands.................................................................................................42
List of commands................................................................................ 44
Index......................................................................................................45
Welcome to the Bandwidth Extension option
R&S®SMW-K555
5User Manual 1179.5776.02 ─ 01
1 Welcome to the Bandwidth Extension option
The R&S SMW-K555 option Bandwidth Extension is a firmware application that allows
extension of the modulation bandwidth to up to 4 GHz.
This user manual contains a description of the functionality that the application pro-
vides, including remote control operation.
All functions not discussed in this manual are the same as in the base unit and are
described in the R&S SMW user manual. The latest version is available at:
www.rohde-schwarz.com/manual/SMW200A
Installation
You can find detailed installation instructions in the delivery of the option or in the
R&S SMW service manual.
1.1 Key features
●Extension of the modulation bandwidth of an RF signal to up to 4 GHz
●Support of ARB output clock rates of up to 4.8 GHz
●Automatic alignment for synchronization of the RF output signal:
– RF ports alignment including local oscillator (LO) phase corrections
– Bandwidth extension setup alignment including RF level corrections and skew
corrections due to different cable lengths
1.2 Accessing the Bandwidth Extension dialog
To open the dialog with Bandwidth Extension settings
1. In the block diagram of the R&S SMW, select "System Config > System Configura-
tion".
2. Select "Multi Instrument > Bandwidth Extension".
The dialog provides general settings for bandwidth extension.
The signal generation is not started immediately. To start signal generation with the
default settings, select "State > On".
Accessing the Bandwidth Extension dialog
Welcome to the Bandwidth Extension option
R&S®SMW-K555
6User Manual 1179.5776.02 ─ 01
1.3 Documentation overview
This section provides an overview of the R&S SMW user documentation. Unless speci-
fied otherwise, you find the documents on the R&S SMW product page at:
www.rohde-schwarz.com/manual/smw200a
1.3.1 Getting started manual
Introduces the R&S SMW and describes how to set up and start working with the prod-
uct. Includes basic operations, typical measurement examples, and general informa-
tion, e.g. safety instructions, etc. A printed version is delivered with the instrument.
1.3.2 User manuals and help
Separate manuals for the base unit and the software options are provided for down-
load:
●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 com-
mands with programming examples, and information on maintenance, instrument
interfaces and error messages. Includes the contents of the getting started manual.
●Software option manual
Contains the description of the specific functions of an option. Basic information on
operating the R&S SMW is not included.
The contents of the user manuals are available as help in the R&S SMW. The help
offers quick, context-sensitive access to the complete information for the base unit and
the software options.
All user manuals are also available for download or for immediate display on the Inter-
net.
1.3.3 Tutorials
The R&S SMW provides interactive examples and demonstrations on operating the
instrument in form of tutorials. A set of tutorials is available directly on the instrument.
1.3.4 Service manual
Describes the performance test for checking compliance with rated specifications, firm-
ware update, troubleshooting, adjustments, installing options and maintenance.
The service manual is available for registered users on the global Rohde & Schwarz
information system (GLORIS):
https://gloris.rohde-schwarz.com
Documentation overview
Welcome to the Bandwidth Extension option
R&S®SMW-K555
7User Manual 1179.5776.02 ─ 01
1.3.5 Instrument security procedures
Deals with security issues when working with the R&S SMW in secure areas. It is avail-
able for download on the Internet.
1.3.6 Printed safety instructions
Provides safety information in many languages. The printed document is delivered with
the product.
1.3.7 Data sheets and brochures
The data sheet contains the technical specifications of the R&S SMW. It also lists the
options and their order numbers and optional accessories.
The brochure provides an overview of the instrument and deals with the specific char-
acteristics.
See www.rohde-schwarz.com/brochure-datasheet/smw200a
1.3.8 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/smw200a
1.3.9 Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on particu-
lar topics.
See www.rohde-schwarz.com/application/smw200a and www.rohde-schwarz.com/
manual/smw200a
Documentation overview
Welcome to the Bandwidth Extension option
R&S®SMW-K555
8User Manual 1179.5776.02 ─ 01
1.4 Scope
Tasks (in manual or remote operation) that are also performed in the base unit in the
same way are not described here.
In particular, it includes:
●Managing settings and data lists, like saving and loading settings, creating and
accessing data lists, or accessing files in a particular directory.
●Information on regular trigger, marker and clock signals and filter settings, if appro-
priate.
●General instrument configuration, such as checking the system configuration, con-
figuring networks and remote operation
●Using the common status registers
For a description of such tasks, see the R&S SMW user manual.
1.5 Notes on screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as many as possible of the provided functions and
possible interdependencies between parameters. The shown values may not represent
realistic usage scenarios.
The screenshots usually show a fully equipped product, that is: with all options instal-
led. Thus, some functions shown in the screenshots may not be available in your par-
ticular product configuration.
Notes on screenshots
About the Bandwidth Extension option
R&S®SMW-K555
9User Manual 1179.5776.02 ─ 01
2 About the Bandwidth Extension option
2.1 Required options
The basic equipment layout for Bandwidth Extension includes the options for each
R&S SMW:
●Wideband baseband main module (R&S SMW-B13XT)
●Two path instrument including the following options per instrument path:
– Wideband baseband generator (R&S SMW-B9)
– Baseband extension to 1 GHz RF (R&S SMW-K525)
– Baseband extension to 2 GHz RF (R&S SMW-K527)
●Frequency options:
– First path: Minimum configuration requires R&S SMW-B1012
– Second path: Minimum configuration requires R&S SMW-B2012
●Bandwidth Extension (R&S SMW-K555)
●Optional combiner kit options:
– Combiner Kit 40 GHz (R&S SMW-ZKK)
For RF output frequencies up to 40 GHz
– Combiner Kit 67 GHz (R&S SMW-ZKV)
For RF output frequencies up to 67 GHz
For more information, see data sheet.
2.2 About Bandwidth Extension
Equipped with option R&S SMW-K555, the R&S SMW allows you to extend band-
widths of I/Q modulated signals. A practical approach is to superimpose RF signals
with center frequencies close to each other. The bandwidths of the modulated base-
band signal overlap. The figure Figure 2-1 illustrates the superposition of two adjacent
baseband signals band A (bandwidth fBW A, center frequency fc A) and band B (band-
width fBW B, center frequency fc B).
About Bandwidth Extension
About the Bandwidth Extension option
R&S®SMW-K555
10User Manual 1179.5776.02 ─ 01
Figure 2-1: Bandwidth extension without phase corrections
A = Band A
B = Band B
fBW A = Bandwidth band A
fBW B = Bandwidth band B
fBW = Extended bandwidth of band A and band B
fc A = Center frequency band A
fc B = Center frequency band B
fc= Center frequency of band A and band B
fOL = Bandwidth overlap between band A and band B
Ideally, the resulting baseband signal has an extended bandwidth fBW = fBW A + fBW B at
center frequency fc. In reality, destructive interference effects occur at the bandwidth
overlap fOL and result in a signal level drop at fc. To compensate the signal level drop,
phase corrections are added so that signal level of the resulting band A+B is constant
over the whole bandwidth range fBW.
Figure 2-2: Bandwidth extension with phase corrections
A+B = Extended band A+B with corrected overlap
fBW = Extended bandwidth of band A and band B
fc A = Center frequency band A
fc B = Center frequency band B
fc= Center frequency of band A and band B
You can obtain phase correction data, for example, from a coupled alignment source
after combining the baseband signals. The alignment source can be a power sensor or
a spectrum analyzer. Also, this alignment source has direct feedback (LAN) to base-
About Bandwidth Extension
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