Rohde & Schwarz CMW500 1201.0002K50 User manual

R&S®CMW500
Wideband
Radio Communication Tester
User Manual
User Manual
(;×ìÍ2)
1173.9463.02 ─ 02
Test & Measurement

This user manual applies to the following R&S®CMW models:
●R&S®CMW500 1201.0002K50 (with display, selection R&S®CMW-S600B)
●R&S®CMW500 1201.0002K50 (without display, selection R&S®CMW-S600A)
The manual describes the base software, common features of the firmware applications and basic principles
for manual operation and remote control. The firmware applications are described in separate documents.
© 2011 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Munich, Germany
Phone: [phone] - 0
Fax: [phone]
E-mail: [email protected]
Internet: http://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.
CDMA2000® is a registered trademark of the Telecommunications Industry Association (TIA -USA).
Trade names are trademarks of the owners.
The following abbreviations are used throughout this manual: R&S®CMW500 is abbreviated as R&S CMW500.

Contents
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Contents
1Preface....................................................................................................9
1.1 What's New in this Revision.........................................................................................9
1.2 Documentation Map......................................................................................................9
1.2.1 Help System....................................................................................................................9
1.2.2 Quick Start Guide..........................................................................................................10
1.2.3 Documentation CD-ROM..............................................................................................10
1.2.4 Documentation Update via Internet...............................................................................10
1.3 Note about Faceless Instruments..............................................................................10
2Preparing for Use.................................................................................13
2.1 Front Panel Tour.........................................................................................................13
2.1.1 Utility Keys....................................................................................................................14
2.1.2 Status LEDs and Standby Key......................................................................................14
2.1.3 Display..........................................................................................................................15
2.1.4 Setup Keys....................................................................................................................16
2.1.5 Data Entry Keys............................................................................................................17
2.1.6 Rotary Knob and Navigation Keys................................................................................17
2.1.7 Front Panel Connectors................................................................................................18
2.2 Rear Panel Tour...........................................................................................................19
2.3 Putting the Instrument into Operation......................................................................21
2.3.1 Unpacking the Instrument and Checking the Shipment................................................21
2.3.2 Instrument Setup...........................................................................................................22
2.3.3 Bench Top Operation....................................................................................................22
2.3.4 Mounting in a 19" Rack.................................................................................................23
2.3.5 EMI Suppression...........................................................................................................24
2.3.6 Connecting the Instrument to the AC Supply................................................................24
2.3.7 Power on and off...........................................................................................................24
2.3.8 Replacing Fuses...........................................................................................................25
2.3.9 Standby and Ready State.............................................................................................25
2.3.10 Optional Cabling............................................................................................................26
2.4 Maintenance................................................................................................................26
2.4.1 Storing and Packing......................................................................................................27

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2.5 Connecting External Accessories.............................................................................27
2.5.1 Connecting a Mouse.....................................................................................................27
2.5.2 Connecting a Keyboard.................................................................................................28
2.5.3 Connecting a Printer.....................................................................................................28
2.5.4 Connecting a Monitor....................................................................................................29
2.5.5 Connecting a LAN Cable...............................................................................................30
2.6 Starting the Instrument and Shutting Down.............................................................30
2.7 Remote Operation in a LAN.......................................................................................31
2.7.1 Assigning an IP Address...............................................................................................32
2.7.2 Remote Desktop Connection........................................................................................33
2.7.3 Windows Firewall Settings............................................................................................34
2.8 Windows XP.................................................................................................................35
2.9 Software Update..........................................................................................................36
2.9.1 Software Packages.......................................................................................................36
2.9.2 Compatibility of SW Versions and Parallel Installation..................................................36
2.9.3 Update Procedure.........................................................................................................37
2.9.4 R&S Software Distributor..............................................................................................39
2.9.5 R&S Version Selector...................................................................................................40
3Getting Started.....................................................................................43
3.1 Basic Tasks.................................................................................................................43
3.1.1 Accessing Dialogs.........................................................................................................43
3.1.2 Data Entry.....................................................................................................................45
3.1.3 Using Front Panel Keys................................................................................................46
3.1.4 Using an External Keyboard.........................................................................................47
3.1.5 Configuring the Task Bar..............................................................................................47
3.1.6 Using the Soft-Front Panel and Keyboard Shortcuts....................................................48
3.2 Sample Session...........................................................................................................49
3.2.1 Generating an RF Signal...............................................................................................49
3.2.2 Measuring an RF Signal................................................................................................51
3.2.3 Performing Signaling Measurements............................................................................52
4System Overview.................................................................................55
4.1 Sub-Instruments..........................................................................................................55
4.1.1 One Sub-Instrument......................................................................................................55

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4.1.2 Two Sub-Instruments....................................................................................................56
4.2 Generators...................................................................................................................57
4.2.1 Generator Control.........................................................................................................57
4.2.2 RF Path Settings (Generators)......................................................................................58
4.2.3 Real-Time and Arbitrary (ARB) Generators..................................................................59
4.3 Measurements.............................................................................................................60
4.3.1 Measurement Control....................................................................................................60
4.3.2 Connection Control (Measurements)............................................................................61
4.3.3 Statistical Settings.........................................................................................................62
4.3.4 Statistical Results..........................................................................................................64
4.3.5 Limit Check...................................................................................................................67
4.3.6 Measurement Triggers..................................................................................................68
4.3.7 TX Measurements.........................................................................................................70
4.3.8 RX Measurements........................................................................................................78
4.4 Signaling Applications...............................................................................................79
4.4.1 RF Path Settings...........................................................................................................79
4.4.2 Control of the Cell State................................................................................................80
4.4.3 Connection States.........................................................................................................81
4.5 Markers........................................................................................................................81
5Basic Instrument Functions................................................................83
5.1 Startup Dialog..............................................................................................................83
5.2 Utility Dialogs..............................................................................................................84
5.2.1 Reset Dialog..................................................................................................................84
5.2.2 Save/Recall Dialog........................................................................................................86
5.2.3 Print Dialog....................................................................................................................88
5.2.4 Info Dialog.....................................................................................................................89
5.3 Setup Dialog................................................................................................................93
5.3.1 System Settings............................................................................................................93
5.3.2 Remote Settings............................................................................................................95
5.3.3 Activating Options.........................................................................................................98
5.3.4 SW/HW Equipment.......................................................................................................99
5.3.5 Selftests......................................................................................................................100
5.3.6 Sync Settings..............................................................................................................107

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5.3.7 External Trigger...........................................................................................................108
5.3.8 Logging.......................................................................................................................109
5.3.9 Digital IQ.....................................................................................................................110
5.4 Instrument Setup Dialog...........................................................................................111
5.5 Measurement Controller Dialog...............................................................................112
5.6 Generator/Signaling Controller Dialog....................................................................113
5.7 Blockview Dialog.......................................................................................................113
5.7.1 Show Active Routing...................................................................................................115
5.7.2 Show Selectable Routing............................................................................................115
5.8 System Messages.....................................................................................................117
6 Remote Control..................................................................................119
6.1 Remote Control Operation.......................................................................................119
6.1.1 Drivers for Graphical Programming Interfaces............................................................121
6.1.2 Setting the Device Addresses.....................................................................................121
6.1.3 Establishing and Testing a LAN Connection...............................................................122
6.1.4 Switchover to Remote Control....................................................................................123
6.1.5 Multiple Channels for Remote Access........................................................................125
6.2 Messages...................................................................................................................126
6.2.1 VXI-11 Interface Messages.........................................................................................126
6.2.2 GPIB Bus Interface Messages....................................................................................126
6.2.3 Device Messages (Commands and Device Responses)............................................126
6.2.4 SCPI Command Structure and Syntax........................................................................127
6.3 R&S CMW Software and Command Structure.......................................................134
6.3.1 General Command Structure......................................................................................134
6.3.2 Firmware Applications.................................................................................................135
6.3.3 Measurement Contexts and Views.............................................................................136
6.4 Control of the Instrument.........................................................................................137
6.4.1 Generator Control.......................................................................................................137
6.4.2 Measurement Control..................................................................................................139
6.4.3 Signaling Generator Control........................................................................................150
6.4.4 Signal Path Settings....................................................................................................152
6.4.5 Resource and Path Management...............................................................................159
6.5 Command Processing..............................................................................................164

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6.5.1 Input Unit.....................................................................................................................164
6.5.2 Command Recognition................................................................................................165
6.5.3 Data Base and Instrument Hardware..........................................................................165
6.5.4 Status Reporting System............................................................................................166
6.5.5 Output Unit..................................................................................................................166
6.6 Status Reporting System.........................................................................................166
6.6.1 Overview of Status Registers......................................................................................167
6.6.2 Structure of an SCPI Status Register..........................................................................167
6.6.3 Contents of the Status Registers................................................................................169
6.6.4 Application of the Status Reporting System................................................................175
6.6.5 Reset Values of the Status Reporting System............................................................178
6.6.6 Regular Expressions...................................................................................................179
6.7 Command Macros.....................................................................................................180
6.7.1 Macro Contents and Macro Commands.....................................................................181
6.7.2 Macro Programming Examples...................................................................................181
6.8 Response Buffers.....................................................................................................182
6.8.1 Buffer Contents and Buffer Commands......................................................................183
6.8.2 Buffer Programming Example.....................................................................................183
6.9 LXI Configuration......................................................................................................184
6.9.1 LXI Classes and LXI Functionality..............................................................................184
6.9.2 LXI Browser Interface..................................................................................................185
6.9.3 LAN Configuration.......................................................................................................187
6.9.4 SCPI Remote Trace....................................................................................................189
7Command Reference.........................................................................193
7.1 Common Commands................................................................................................193
7.2 Emulation Codes.......................................................................................................195
7.3 Instrument-Control Commands...............................................................................196
7.3.1 Macro Commands.......................................................................................................196
7.3.2 Buffer Commands.......................................................................................................199
7.3.3 Frequency-Dependent Correction Settings.................................................................201
7.3.4 CALibration Commands..............................................................................................206
7.3.5 FORMat Commands...................................................................................................208
7.3.6 MMEMory Commands................................................................................................209

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7.3.7 STATus Commands....................................................................................................219
7.3.8 SYSTem Commands..................................................................................................241
7.3.9 TRACe Commands.....................................................................................................260
7.3.10 TRIGger Commands...................................................................................................264
8Annexes..............................................................................................267
8.1 Interfaces and Connectors.......................................................................................267
8.1.1 Rear Panel Connectors...............................................................................................267
8.1.2 LAN Interface..............................................................................................................270
8.1.3 GPIB Bus Interface.....................................................................................................273
8.2 Comparison with R&S CMU.....................................................................................276
8.2.1 Segmentation, Addressing and Resource Management.............................................276
8.2.2 RF Path Settings.........................................................................................................277
8.2.3 Generator Control.......................................................................................................278
8.2.4 Measurement Control..................................................................................................278
8.3 Windows XP Recovery and Backup........................................................................279
8.3.1 Accessing the Recovery and Backup Dialog..............................................................279
8.3.2 Recovering the Factory Default Settings.....................................................................280
8.3.3 Handling User-Defined Images...................................................................................280
List of Commands..............................................................................281
Index....................................................................................................287

Preface
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1 Preface
This chapter provides an overview of new features and an overview of the R&S CMW500
operating documentation.
1.1 What's New in this Revision
This revision describes version 2.1.10 of the R&S CMW500 base software. Compared
to the previous software version it provides the new features listed below. For extensions
of a firmware application please refer to the "What's New" in the description of the firm-
ware application.
●Support of multi-instrument setup (several synchronized R&S CMW)
For use cases refer to the "Protocol Testing - Test Setups and Use Cases" manual.
For configuration of the synchronization signal see Sync Settings.
For additional connectors see chapter 8.1.1.8, "SYS SYNC OUT 1 to 3, SYS SYNC
IN", on page 269.
●Support of command macros and response buffers
●Timer commands, see chapter 7.3.8.6, "High Resolution Timer", on page 252
●Message monitor configuration in setup dialog, see Logging
●New command corresponding to the hotkey "Report Display": TRACe:REMote:
MODE:DISPlay:ENABle
Known issues:
●Some of the remote control commands in the SYSTem... and STATus... subsys-
tems are not implemented as described in "Boolean Parameters" on page 132.
These commands are not needed to perform measurements or generate RF signals.
Software Version
To check your R&S CMW500 software version, open the "Setup" dialog and click "HW/
SW Equipment". The initial software version for each remote control command is quoted
in the reference description.
1.2 Documentation Map
The R&S CMW500 documentation is delivered as help system, printed quick start guide
and on CD-ROM.
1.2.1 Help System
The help system is embedded in the instrument, offering quick, context-sensitive refer-
ence to the information needed for operation and programming.
What's New in this Revision

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10User Manual 1173.9463.02 ─ 02
You can use the help also if you control the instrument from an external monitor. Fur-
thermore you can transfer the help to your PC and use it as a standalone help.
1.2.2 Quick Start Guide
The quick start guide describes everything that is needed to put the instrument into oper-
ation and helps you to get familiar with the R&S CMW500. It gives an introduction to the
instrument's functionality and provides procedures for typical measurement tasks. The
quick start guide is delivered with each R&S CMW500.
For instruments with protocol testing applications (option R&S CMW-KP080) an addi-
tional quick start guide "R&S CMW500 Protocol Testing" is delivered. It provides an
introduction to protocol testing and complements the quick start guide for the R&S
CMW500 platform.
1.2.3 Documentation CD-ROM
The CD-ROM provides the complete user documentation for the R&S CMW500:
●the online help system
●the quick start guide in printable form
●the user manuals in printable form
●the service manual in printable form
●links to different useful sites in the R&S internet
For instruments with protocol testing applications (option R&S CMW-KP080) an addi-
tional CD-ROM "R&S CMW500 Protocol Testing" is available. It provides additional doc-
umentation about protocol testing, the related software tools and application program-
ming interfaces.
1.2.4 Documentation Update via Internet
You can find general information about Rohde & Schwarz and our products on the R&S
Internet: http://www.rohde-schwarz.com.
Furthermore, Rohde & Schwarz provides registered users a "CMW Customer Web" sec-
tion on GLORIS, the Global Rohde & Schwarz Information System: https://extra-
net.rohde-schwarz.com. From this resource you can download software updates and the
related user manuals.
You do not need to update the help system manually. When you perform a software
update, the corresponding part of the help system is updated automatically.
1.3 Note about Faceless Instruments
Chapter Preparing for Use provides an overview of the front panel controls and connec-
tors of the R&S CMW500 with display and gives all information that is necessary to put
Note about Faceless Instruments

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11User Manual 1173.9463.02 ─ 02
the instrument into operation and connect external devices. The application examples in
the other chapters are also based on an R&S CMW500 with display.
The measurement functionality of the two instrument types is identical. You can test all
measurement examples reported in this manual using an R&S CMW500 without display
that is controlled from the Graphical User Interface displayed on an external monitor or
PC.
For specific information concerning faceless instruments, refer to your quick start guide.
Note about Faceless Instruments

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2 Preparing for Use
The following topics will help you to get familiar with the instrument and perform the first
steps:
●Front Panel Tour
●Rear Panel Tour
●Putting the Instrument into Operation
General Safety Instructions
Please make sure to observe the instructions for instrument setup and connection so that
you cannot cause damage to the instrument or endanger people. This is of particular
importance when you use the instrument for the first time. Also observe the general safety
instructions at the beginning of your printed quick start guide.
This chapter gives an overview of the front panel controls and connectors of the R&S
CMW500 and gives all information that is necessary to put the instrument into operation
and connect external devices. Notes on reinstallation of the instrument software appear
at the end of the chapter.
Chapter "Getting Started" provides an introduction to the operation of the instrument by
means of typical configuration and measurement examples. For a description of the
operating concept and an overview of the instrument’s capabilities refer to the chapter
"System Overview". For all reference information concerning manual and remote control
of the instrument refer to the online help system or its printed/printable version. A more
detailed description of the hardware connectors and interfaces is also part of the help
system.
2.1 Front Panel Tour
The front panel of the R&S CMW500 with display consists of the VGA display with the
softkey area and some utility keys (left side) and the hardkey area with the RF/AF con-
nectors and control interfaces (right side). Brief explanations on the controls and con-
nectors, the hardkey area and the rear panel can be found in the following sections.
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Soft-Front Panel
When using a remote desktop connection or an external monitor a soft-front panel is
available. See Using the Soft-Front Panel and Keyboard Shortcuts.
2.1.1 Utility Keys
The keys to the left of the display cause the R&S CMW500 to return to a definite instru-
ment state and provide information on the instrument and assistance.
●RESET opens the Reset Dialog. Use this dialog to restore a definite instrument state.
●INFO opens the Info Dialog. Use this dialog to get an overview of firmware application
states or to prepare files for problem reporting.
●SAVE RCL opens the Save/Recall Dialog. Use this dialog to store or recall instrument
settings.
●SETUP opens the Setup Dialog. Use this dialog to perform administrative tasks,
define basic instrument settings, enable options, view the startup results and access
service functions.
●PRINT opens the Print Dialog. Use this dialog to copy the screen contents to a file or
printer.
●HELP opens the help system.
●SYS minimizes the R&S CMW500 software application and gives access to the Win-
dows XP desktop and start menu (toggle function). Use the operating system level
to perform system configurations and call up additional software utilities.
2.1.2 Status LEDs and Standby Key
The status LEDs and the standby toggle switch are located in the bottom left corner of
the front panel.
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The status LEDs light to indicate the following instrument states:
●ERROR: An error that impairs the correct functioning (e.g. a hardware error) occurred
during operation. The error must be eliminated before correct instrument operation
can be ensured. The LED blinks to indicate that the reference frequency is not
locked. This happens e.g. if the R&S CMW500 is switched from internal to external
reference while no external reference signal is available, or if synchronization to the
reference signal is lost. Check frequency and level of the external reference signal,
see Sync Settings.
●REMOTE: The instrument is controlled via its remote interface.
●BUSY: The instrument is booted, or a software module is loaded.
●READY: The instrument is ready for use, the startup procedure is finished.
The standby key serves two main purposes:
●Toggle between Standby and Ready State (indicated by the standby LEDs).
●Shut down the instrument, see Starting the Instrument and Shutting Down.
2.1.3 Display
The R&S CMW500 with selection R&S CMW-S600B, R&S CMW-S600D or R&S CMW-
S600F is equipped with a color display providing control elements for the measurements
and various output elements for the results. The display is bordered by two different bars
with softkeys and hotkeys.
Refer to the data sheet for the technical characteristics of the display.
2.1.3.1 Softkeys and Hotkeys
Softkeys and hotkeys are located in two bars next to the display.
●The "softkey bar" on the right side consists of 8 softkeys. Softkeys provide quick,
direct access to the main settings in the active dialog.
●The "hotkey bar" across the bottom of the display contains 8 keys. Hotkeys provide
extended settings, depending on the active softkey. The hotkey bar may be replaced
by the task bar; see below.
The following additional keys are related to the softkey bar:
MENU is for future extensions.
TASKS displays or hides the task bar across the bottom of the display area (toggle func-
tion). A task key gives access to a generator, measurement or signaling control dialog.
The task bar replaces the hotkey bar; it contains a maximum of 8 tasks of the active
session. See also Configuring the Task Bar.
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2.1.4 Setup Keys
The keys to the right of the display select views and control the measurements and win-
dows. See also Data Entry Keys.
The keys above the numeric key pad provide access to the following dialogs and views:
●DEVICE – opens the Instrument Setup Dialog. Use this dialog to select the device
type (one or two sub-instruments) and to change the active sub-instrument.
●MEASURE – opens the Measurement Controller Dialog. Use this dialog to load mea-
surement firmware applications.
●FAVORITE – for future extensions
●BLOCK VIEW – opens the Blockview Dialog. Use this dialog to get an overview of
the signal routing settings of all active firmware applications or to reconfigure these
settings.
●SIGNAL GEN – opens the Generator/Signaling Controller Dialog. Use this dialog to
load generator and signaling firmware applications.
●WIZARD – for future extensions
The keys above the rotary knob control measurements, generators, signaling applica-
tions, and control elements in dialogs.
●ON/OFF – starts a measurement from the OFF state or aborts a running measure-
ment; see Measurement Control. ON/OFF also switches generators or signaling
generators on or off (see Generator Control) and selects/clears checkboxes in dialogs
(toggle function).
●RESTART / STOP – re-starts a measurement in the RDY state or stops a running
measurement.
●ESC – terminates the current stage of a session, e.g. by closing a dialog.
●CONTEXT – for future extensions.
The keys below the numeric key pad arrange different windows on the display.
●CLOSE – closes the active window, e.g. a configuration dialog.
●MIN – reduces the active window to an icon.
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●MAX – for future extensions
●TILE – for future extensions
2.1.5 Data Entry Keys
The keys in the data entry keypad are used to enter numbers and units.
Data entry keys are only enabled while the cursor is placed on a data input field in a
dialog. Their function depends on the data type of the input field.
The keys 0 to 9 enter the corresponding numbers (in numeric input fields) or characters
(character input fields).
●In numeric input fields, the keys enter the decimal point and change the sign of the
entered numeric value. Multiple decimal points are not allowed. Pressing plus/minus
for a second time cancels the effect of the first entry.
●In hexadecimal input fields, the keys enter the hex values E and F, respectively.
●In character input fields, the keys enter special characters and switch between upper
and lower case, respectively.
●In numeric input fields, the G/n, M/m, k/m or x1 keys multiply the entered value with
factors of 10(-)9, 10(-)6, 10(-)3 or 1 and add the appropriate physical unit.
●In hexadecimal input fields, the keys enter the hex values A to D, respectively.
●In character input fields, the keys have no effect.
BACKSPACE deletes the last character before the cursor position or the selected char-
acter sequence. If an entire numeric value is selected, BACKSPACE moves the cursor
in front of the first digit.
For future extensions.
Activates the edit mode for the selected input field or confirms and terminates the entry.
2.1.6 Rotary Knob and Navigation Keys
The rotary knob, the cursor keys and the PREV and NEXT keys are alternative control
elements for data variation and navigation in the graphical user interface.
Rotary knob
●Increases or decreases numeric values in editing mode
●Moves the cursor, e.g. to a function block in the block view
●Scrolls within lists, tables or tree views
●Confirms entries (press the rotary knob, equivalent to ENTER)
Cursor keys
●The cursor up/down keys vary numeric values and scroll within lists, dialogs, or tables.
●The cursor left/right keys move the cursor in input fields and scroll within lists, dialogs
or tables.
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PREV and NEXT
●Switch between several active elements in dialogs, e.g. in order to access all buttons,
input fields etc. in a dialog.
2.1.7 Front Panel Connectors
The RF and AF connectors and various additional control interface connectors are loca-
ted on the front panel.
2.1.7.1 RF Connectors
The SNAP N-type connectors on the front panel are used as inputs and outputs for RF
signals.
They are labeled RF 1 OUT, RF 1 COM, RF 2 COM, RF 3 OUT, RF 3 COM and RF 4
COM (the RF 3 and 4 connectors are optional).
The impedance of all RF connectors is 50 Ω. The frequency ranges vary depending on
the installed hardware options; input and output level ranges depend on the firmware
applications (refer to the data sheet). The command reference sections state the maxi-
mum frequency ranges available with a fully equipped instrument (including optional
parts).
The connectors are assigned to firmware application instances, see Sub-Instruments.
COM connector: Bidirectional connector for various power ranges depending on the firm-
ware application (refer to the data sheet). The two LEDs above the connector indicate
the connector state:
●The upper LED is lit as long as the R&S CMW500 is ready to receive signals.
●The lower LED is lit as long as it transmits an RF signal.
OUT connector: Output connector for high RF output powers depending on the firmware
application (refer to the data sheet). The upper LED is lit as long as the R&S CMW500
transmits an RF signal.
Maximum Input Levels
The maximum input levels at all bidirectional RF connectors according to the front panel
labeling or the data sheet must not be exceeded.
In addition, the maximum input voltages of other input connectors at the front and rear
panel must not be exceeded.
RF connectors may warm up very much when high RF power is fed in!
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2.1.7.2 LAN Connector
8-pin connector RJ-45 used to connect the R&S CMW500 to a Local Area Network (LAN).
Refer to Remote Operation in a LAN. It supports up to 100 Mbit/s. A second LAN con-
nector labeled LAN REMOTE is available on the rear panel of the instrument.
2.1.7.3 SENSOR Connector
Lemosa 6-pin socket for NRP-Z27/-Z28 power sensors. An external power sensor can
be used to monitor the power of an external signal or calibrate an RF source
The SENSOR connector controls the power sensor but also provides the power supply
and trigger signals.
2.1.7.4 USB Connectors
Single Universal Serial Bus connectors of type A (master USB), used to connect e.g. a
keyboard, mouse or other pointing devices, a printer or an external storage device (USB
stick, CD-ROM drive etc.). All front panel USB connectors comply with standard USB 2.0;
refer to the data sheet.
USB Connection
The length of passive connecting USB cables should not exceed 1 m. The maximum
current per USB port is 500 mA.
2.1.7.5 AF Connectors
For future extensions.
2.2 Rear Panel Tour
This section gives an overview of the rear panel controls and connectors of the R&S
CMW500.
The rear connectors and interfaces are described in detail in the Annex of the operating
manual and the help system.
Rear Panel Tour

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The following connectors are available on all instruments:
●LAN REMOTE is an RJ-45 connector. Use this connector to integrate the instrument
to a Local Area Network, primarily for remote control purposes.
●REF IN is a BNC input for an external reference frequency. Use this connector to
synchronize the R&S CMW500 to another device.
●REF OUT 1 is a BNC output for the internal reference frequency of the R&S CMW500.
Use this connector to synchronize other instruments to the tester.
●The USB connectors can be used to connect e.g. a keyboard, mouse or other pointing
devices, a printer or an external storage device (USB stick, CD-ROM drive etc.).
●The USB REMOTE connector can be used for remote control of the instrument.
●TRIG A and TRIG B are two BNC connectors for external trigger signals.
The following connectors are optional:
●A LAN SWITCH with two RJ-45 connectors is available as option R&S CMW-B660A
and R&S CMW-B661A. It routes data provided by internal boards to the processor
(e.g. payload provided by signaling units).
●The BNC connectors SYS SYNC OUT 1, OUT 2, OUT 3 and SYS SYNC IN are
provided with option R&S CMW-S550M. They are used to provide or receive time
information.
●LAN DAU is an RJ-45 connector. It is provided with the Data Application Unit (DAU),
option R&S CMW-B450A. The DAU is required when testing End-to-End (E2E) IP
data transfer and mandatory when using the instrument for protocol testing (U-plane
tests).
●An I/Q board is available as option R&S CMW-B510A. It provides four digital con-
nectors (labeled "DIG IQ IN/OUT 1", "DIG IQ OUT 2", "DIG IQ IN/OUT 3", and "DIG
IQ OUT 4") for input and output of digital IQ data plus two bidirectional BNC connec-
tors (labeled "AUX A" and "AUX B") for control, clock and trigger signals.
A second I/Q board is available as option R&S CMW-B520A. It provides the digital
connectors "DIG IQ IN/OUT 5", "DIG IQ OUT 6", "DIG IQ IN/OUT 7", and "DIG IQ
OUT 8" and the BNC connectors "AUX C" and "AUX D".
Rear Panel Tour