Rohde&Schwarz R&S®SMCVB-K155 AM/FM/RDS User Manual
R&S®SMCVB-K155
AM/FM/RDS
User Manual
(;Ý:<2)
1179101202
Version 04
This document describes the following software options:
●
R&S®SMCVB-K155 AM/FM/RDS (1434.3719.xx)
This manual describes firmware version FW 5.00.122.xx and later of the R&S®SMCV100B.
© 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.
1179.1012.02 | Version 04 | R&S®SMCVB-K155
The following abbreviations are used throughout this manual: R&S®SMCV100B is abbreviated as R&S SMCVB, R&S®WinIQSIM2 is
abbreviated as R&S WinIQSIM2
R&S®SMCVB-K155
Contents
1 Welcome to the AM/FM/RDS option..................................................... 7
1.1 Accessing the AM/FM/RDS dialog...............................................................................7
1.2 What's new.....................................................................................................................7
1.3 Documentation overview..............................................................................................8
1.3.1 Getting started manual....................................................................................................8
1.3.2 User manuals and help................................................................................................... 8
1.3.3 Service manual............................................................................................................... 8
1.3.4 Instrument security procedures.......................................................................................8
1.3.5 Printed safety instructions............................................................................................... 9
1.3.6 Data sheets and brochures............................................................................................. 9
1.3.7 Release notes and open source acknowledgment (OSA).............................................. 9
Contents
1.3.8 Application notes, application cards, white papers, etc...................................................9
1.4 Scope........................................................................................................................... 10
1.5 Notes on screenshots.................................................................................................10
2 About the AM/FM/RDS option............................................................. 11
2.1 Required options.........................................................................................................11
3 Audio AM configuration and settings................................................ 12
3.1 General settings.......................................................................................................... 12
3.2 AM modulator settings............................................................................................... 13
3.2.1 Audio signal settings..................................................................................................... 14
3.2.2 Modulation settings....................................................................................................... 17
4 Audio FM configuration and settings.................................................18
4.1 General settings.......................................................................................................... 18
4.2 FM modulator settings................................................................................................19
4.2.1 Audio signal settings..................................................................................................... 20
4.2.2 Modulation settings....................................................................................................... 25
4.3 RDS/RBDS settings.....................................................................................................27
4.3.1 General settings............................................................................................................ 28
4.3.2 MS/DI/CT settings......................................................................................................... 32
4.4 AF settings...................................................................................................................34
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4.5 EON settings................................................................................................................39
4.5.1 General settings............................................................................................................ 39
4.5.2 Method settings.............................................................................................................43
4.6 TMC / open format settings........................................................................................46
4.6.1 TMC settings................................................................................................................. 46
4.6.2 Open format settings.....................................................................................................51
4.7 DARC settings............................................................................................................. 53
4.8 Special settings...........................................................................................................54
5 Global connector settings...................................................................56
6 Remote-control commands.................................................................57
6.1 Audio AM commands................................................................................................. 58
6.1.1 General commands.......................................................................................................58
Contents
6.1.2 Modulation commands.................................................................................................. 59
6.2 Audio FM commands..................................................................................................62
6.2.1 General commands.......................................................................................................62
6.2.2 Modulation commands.................................................................................................. 64
6.3 FM RDS general commands.......................................................................................68
6.4 FM RDS CT/DI commands.......................................................................................... 71
6.5 FM RDS AF method commands.................................................................................72
6.6 FM RDS EON commands............................................................................................75
6.6.1 General commands.......................................................................................................75
6.6.2 Method commands........................................................................................................78
6.7 FM RDS TMC commands............................................................................................79
6.8 FM RDS OPF commands............................................................................................ 81
6.8.1 General commands.......................................................................................................82
6.8.2 Block 2 commands........................................................................................................82
6.8.3 Block 3 commands........................................................................................................83
6.8.4 Block 4 commands........................................................................................................85
6.9 DARC commands........................................................................................................86
6.10 FM special commands................................................................................................87
Annex.................................................................................................... 89
A RDS data entry information.................................................................89
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Glossary: Abbreviations......................................................................93
Glossary: Specifications..................................................................... 95
List of commands................................................................................ 96
Index....................................................................................................100
Contents
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Contents
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1 Welcome to the AM/FM/RDS option
The R&S SMCVB-K155 is a firmware application that adds functionality to generate
signals in accordance with the AM/FM/RDS digital standards.
The R&S SMCVB-K155 option features:
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●
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This user manual contains a description of the functionality that the application provides, 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 SMCV100B user manual. The latest version is available at:
www.rohde-schwarz.com/manual/SMCV100B
Installation
Welcome to the AM/FM/RDS option
What's new
Audio AM broadcast signal generation
Audio FM broadcast signal generation
Audio FM RDS/RBDS signal generation
You can find detailed installation instructions in the delivery of the option or in the
R&S SMCV100B service manual.
1.1 Accessing the AM/FM/RDS dialog
To open the dialog with AM/FM/RDS settings
► In the block diagram of the R&S SMCV100B, select "Baseband > AM/FM/RDS".
A dialog box opens that displays the provided general settings.
The signal generation is not started immediately. To start signal generation with the
default settings, select "State > On".
1.2 What's new
This manual describes firmware version FW 5.00.122.xx and later of the
R&S®SMCV100B.
Compared to the previous version, it provides the new features listed below:
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Support of sample rates of 44.1 kHz and 48 kHz for audio files (*.wv, *.wav)
played with the audio player application:
For AM, see "Load File" on page 15.
For FM, see "Load File" on page 24.
●
Editorial changes
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1.3 Documentation overview
This section provides an overview of the R&S SMCV100B user documentation. Unless
specified otherwise, you find the documents on the R&S SMCV100B product page at:
www.rohde-schwarz.com/manual/smcv100b
1.3.1 Getting started manual
Introduces the R&S SMCV100B 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.
1.3.2 User manuals and help
Separate manuals for the base unit and the software options are provided for download:
●
●
Welcome to the AM/FM/RDS option
Documentation overview
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.
Software option manual
Contains the description of the specific functions of an option. Basic information on
operating the R&S SMCV100B is not included.
The contents of the user manuals are available as help in the R&S SMCV100B. 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 Internet.
1.3.3 Service manual
Describes the performance test for checking compliance with rated specifications, firmware 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
1.3.4 Instrument security procedures
Deals with security issues when working with the R&S SMCV100B in secure areas. It
is available for download on the Internet.
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1.3.5 Printed safety instructions
Provides safety information in many languages. The printed document is delivered with
the product.
1.3.6 Data sheets and brochures
The data sheet contains the technical specifications of the R&S SMCV100B. 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 characteristics.
See www.rohde-schwarz.com/brochure-datasheet/smcv100b
1.3.7 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.
Welcome to the AM/FM/RDS option
Documentation overview
The open-source acknowledgment document provides verbatim license texts of the
used open source software.
See www.rohde-schwarz.com/firmware/smcv100b
1.3.8 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/smcv100b
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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:
●
●
●
●
For a description of such tasks, see the R&S SMCV100B user manual.
Welcome to the AM/FM/RDS option
Notes on screenshots
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 appropriate.
General instrument configuration, such as checking the system configuration, configuring networks and remote operation
Using the common status registers
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 installed. Thus, some functions shown in the screenshots may not be available in your particular product configuration.
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2 About the AM/FM/RDS option
Use the AM/FM/RDS coder option to generate broadcast signals in FM and AM.
In FM, you can generate a mono or a stereo signal. For stereo signals generated
according to the multiplex method, an RDS coder is available and is used to code fixed
data. Many parameters can be changed over wide setting ranges. See Chapter 4,
"Audio FM configuration and settings", on page 18.
In AM, you can generate amplitude modulated signals. See Chapter 3, "Audio AM con-
figuration and settings", on page 12.
To generate an audio FM broadcast signal
1. Select "Baseband > Audio FM > State > On".
2. Select "RF > RF Level > State > On".
To generate an audio AM broadcast signal
About the AM/FM/RDS option
Required options
1. Select "Baseband > Audio AM > State > On".
2. Select "RF > RF Level > State > On".
2.1 Required options
The equipment layout for generating AM/FM/RDS signals includes:
●
Base unit
●
Option Enable Broadcast Standard (R&S SMCVB-K519)
●
Option AM/FM/RDS (R&S SMCVB-K155)
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3 Audio AM configuration and settings
Access:
► Select "Baseband > Audio AM".
This section provides an overview on the AM settings.
The remote commands required to define these settings are described in Chapter 6.1,
"Audio AM commands", on page 58.
How to: "To generate an audio AM broadcast signal" on page 11
Settings:
● General settings......................................................................................................12
● AM modulator settings............................................................................................ 13
Audio AM configuration and settings
General settings
3.1 General settings
Access:
► Select "Baseband > Audio AM > Audio AM".
The tab provides functionality for calling default settings, save and recall settings.
Settings:
State..............................................................................................................................12
Set To Default................................................................................................................12
Save/Recall...................................................................................................................13
State
Activates the standard and deactivates all the other digital standards and digital modulation modes in the same path.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:STATe on page 58
Set To Default
Calls the default settings. The values of the main parameters are listed in the following
table.
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Remote command:
[:SOURce<hw>]:BB:RADio:AM:PRESet on page 58
Save/Recall
Accesses the "Save/Recall" dialog, that is the standard instrument function for saving
and recalling the complete dialog-related settings in a file. The provided navigation
possibilities in the dialog are self-explanatory.
The settings are saved in a file with predefined extension. You can define the filename
and the directory, in that you want to save the file.
See also, chapter "File and Data Management" in the R&S SMCV100B user manual.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:SETTing:CATalog on page 58
[:SOURce<hw>]:BB:RADio:AM:SETTing:DELete on page 59
[:SOURce<hw>]:BB:RADio:AM:SETTing:LOAD on page 59
[:SOURce<hw>]:BB:RADio:AM:SETTing:STORe on page 59
Audio AM configuration and settings
AM modulator settings
Parameter Value
State Not affected by the "Set to Default"
3.2 AM modulator settings
Access:
► Select "Baseband > Audio AM > AM Modulator".
The dialog provides settings necessary to configure the AM modulator.
Settings:
● Audio signal settings............................................................................................... 14
● Modulation settings................................................................................................. 17
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3.2.1 Audio signal settings
Access:
► Select "AM Modulator > Audio Signal".
Audio AM configuration and settings
AM modulator settings
The tab provides input and audio settings of the signal, that is fed into the AM modulator.
Settings:
Input Signal................................................................................................................... 14
Audio.............................................................................................................................14
Frequency..................................................................................................................... 15
Level..............................................................................................................................15
Load File....................................................................................................................... 15
└ Predefined Files..............................................................................................15
Attenuation....................................................................................................................16
Source...........................................................................................................................16
Input Signal
Sets the audio source for the AM modulator signal.
"External"
"Audio Generator"
"Audio Player"
"Off"
Remote command:
[:SOURce<hw>]:BB:RADio:AM:INPut on page 61
Uses an external audio signal input at the "User 2" connector.
The audio source is fixed to "Source > S/PDIF".
Uses an internal audio generator as the signal source.
You can enable the audio channel, set the audio level and set the
audio frequency.
Uses a file, that is saved to the memory of the R&S SMCV100B.
You can load a file, set the audio channel and set the attenuation.
See "Load File" on page 15.
Disables the audio source for the AM modulator.
Audio
Requires "Input Signal > Audio Generator/Audio Player".
Enables or disables the audio channel.
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Remote command:
[:SOURce<hw>]:BB:RADio:AM:AUDio:AF on page 61
Frequency
Requires "Input Signal > Audio Generator".
Sets the frequency.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:AUDGen:FRQ on page 60
Level
Requires "Input Signal > Audio Generator/Audio Player".
Sets the level.
The nominal level, at which the modulation depth adjusts to the nominal modulation
depth, is 6 dBu. If the level is set to 6 dBu, the generated modulation depth corresponds to the set value.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:AUDGen:LEV on page 60
Audio AM configuration and settings
AM modulator settings
Load File
Requires "Input Signal > Audio Player".
Provides access to the standard "File Select" function of the instrument. The provided
navigation possibilities in the dialog are self-explanatory.
See also, chapter "File and Data Management" in the R&S SMCV100B User Manual.
You can load files with extension *.wv and *.wav. If loaded, the name of the file is
displayed next to the button.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:APLayer:LIBRary:CATalog on page 60
[:SOURce<hw>]:BB:RADio:AM:APLayer:LIBRary:SELect on page 60
Predefined Files ← Load File
The tab list predefined files and displays information on the file. For an overview, see
the table below.
Table 3-1: File information
File information Remark
Date Format: <dd-mm-yyyy>
Time Format: <hh:mm:ss>
Size File size in Mbyte, Increment: 0.00001 Mbyte
Sample rate Supported sample rates: 44.1 kHz and 48 kHz
Number of samples -
Example: Loading a predefined file
Select "Load File > Predefined Files" and select the audio file
default_sine_1khz.wav in the list.
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Information on the file is displayed on the right panel. See also Table 3-1.
To load the file, click "Select". The file is displayed on the "Load File" button.
Audio AM configuration and settings
AM modulator settings
Attenuation
Requires "Input Signal > Audio Player".
Sets the attenuation.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:APLayer:ATT on page 59
Source
Requires "Input Signal > External".
Displays the audio source, that is fixed to S/PDIF.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:SOURce on page 62
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3.2.2 Modulation settings
Access:
► Select "AM Modulator > Modulation".
Settings:
Nom. Mod. Depth..........................................................................................................17
Mod. Depth....................................................................................................................17
Audio AM configuration and settings
AM modulator settings
The tab provides AM modulation settings.
Nom. Mod. Depth
Sets the nominal modulation depth.
The depth denotes the referenced depth and depends on the input signal, see "Input
Signal" on page 14.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:DEPTh on page 61
Mod. Depth
Displays the modulation depth.
Remote command:
[:SOURce<hw>]:BB:RADio:AM:MODulation:DEPTh? on page 61
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4 Audio FM configuration and settings
Access:
► Select "Baseband > Audio FM".
This section provides an overview on the FM and RDS settings. The variety of settings
depends on whether the FM mode. For "Mode > Stereo", you can further specify left
and the right channel settings, see "Mode" on page 26.
The remote commands required to define these settings are described in Chapter 6,
"Remote-control commands", on page 57.
How to: "To generate an audio FM broadcast signal" on page 11
Settings:
● General settings......................................................................................................18
● FM modulator settings.............................................................................................19
● RDS/RBDS settings................................................................................................ 27
● AF settings.............................................................................................................. 34
● EON settings...........................................................................................................39
● TMC / open format settings.....................................................................................46
● DARC settings.........................................................................................................53
● Special settings.......................................................................................................54
Audio FM configuration and settings
General settings
4.1 General settings
Access:
► Select "Baseband > Audio FM > Audio FM".
The tab provides functionality for calling default settings, save and recall settings.
Settings:
State..............................................................................................................................18
Set To Default................................................................................................................19
Save/Recall...................................................................................................................19
State
Activates the standard and deactivates all the other digital standards and digital modulation modes in the same path.
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Remote command:
[:SOURce<hw>]:BB:RADio:FM:STATe on page 63
Set To Default
Calls the default settings. The values of the main parameters are listed in the following
table.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:PRESet on page 62
Save/Recall
Accesses the "Save/Recall" dialog, that is the standard instrument function for saving
and recalling the complete dialog-related settings in a file. The provided navigation
possibilities in the dialog are self-explanatory.
The settings are saved in a file with predefined extension. You can define the filename
and the directory, in that you want to save the file.
See also, chapter "File and Data Management" in the R&S SMCV100B user manual.
Audio FM configuration and settings
FM modulator settings
Parameter Value
State Not affected by the "Set to Default"
Remote command:
[:SOURce<hw>]:BB:RADio:FM:SETTing:CATalog on page 63
[:SOURce<hw>]:BB:RADio:FM:SETTing:DELete on page 63
[:SOURce<hw>]:BB:RADio:FM:SETTing:LOAD on page 63
[:SOURce<hw>]:BB:RADio:FM:SETTing:STORe on page 63
4.2 FM modulator settings
Access:
► Select "Baseband > Audio FM > FM Modulator".
The dialog provides access to settings necessary to configure the input signal and
the FM modulator.
Settings:
● Audio signal settings............................................................................................... 20
● Modulation settings................................................................................................. 25
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4.2.1 Audio signal settings
Access:
► Select "FM Modulator > Audio Signal".
Audio FM configuration and settings
FM modulator settings
The tab provides input and audio settings of the signal, that is fed into the FM modulator.
Settings:
Input Signal................................................................................................................... 20
AF Mode........................................................................................................................21
Audio Left......................................................................................................................21
└ Audio...............................................................................................................21
└ Level............................................................................................................... 22
└ Frequency.......................................................................................................22
└ Attenuation......................................................................................................22
Audio Right....................................................................................................................22
└ Audio...............................................................................................................23
└ Level............................................................................................................... 23
└ Frequency.......................................................................................................23
└ Attenuation......................................................................................................23
Load File....................................................................................................................... 24
└ Predefined Files..............................................................................................24
Source...........................................................................................................................25
Input Signal
Sets the audio source for the FM modulator signal.
"External"
Uses an external audio signal input at the "User 2" connector.
The audio source is fixed to "Source > S/PDIF".
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"Audio Generator"
"Audio Player"
"Off"
Remote command:
[:SOURce<hw>]:BB:RADio:FM:INPut on page 67
AF Mode
Requires "Input Signal > Audio Generator" and "Modulation > Mode > Stereo".
Sets the relationship of the two audio channels with respect to each other.
"L"
"R"
"L = R"
Audio FM configuration and settings
FM modulator settings
Uses an internal audio generator as the signal source.
You can enable the audio channel, set the audio level and set the
audio frequency for mono and stereo modulation mode.
Uses a file, that is saved to the memory of the R&S SMCV100B.
You can load a file, set the audio channel and set the attenuation.
See "Load File" on page 24.
Disables the audio source for the FM modulator.
Only the audio signal from the left audio channel is processed further.
The right audio channel is ignored.
Only the audio signal from the right audio channel is processed further. The left audio channel is ignored.
The audio signal for the left and right channel is identical. Only the
audio signal of the left channel is used, the audio signal of the right
channel is ignored. Therefore, only the settings for the left channel
are available.
As a result, the stereo signal (L-R)/2 disappears as upper and lower
sideband around the suppressed 38 kHz carrier.
"L = -R"
"L ≠ R"
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:MODE on page 66
Audio Left
Displaying the panel requires "Modulation > Mode > Stereo".
The panel groups level and frequency parameters of the left audio channel. The
description of the parameters also applies for "Mode > Mono", since the left audio
channel is the mono audio channel.
Audio ← Audio Left
Enables or disables the audio channel.
You can enable 1 or 2 audio channels depending on the modulation mode:
●
If "Modulation > Mode > Stereo", enable left or right audio channel separately.
The phase of the audio signal for the left and right channel is offset by
180 degrees. Only the audio signal of the left channel is used, the
audio signal of the right channel is ignored. Therefore, only the settings for the left channel are available.
As a result, the mono signal (L+R)/2 disappears in the frequency
range up to 15 kHz.
The audio signals from the left and right audio channel are processed
according to the coding standard for a stereo multiplex signal.
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●
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:AF1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDio:AF2 on page 65
Level ← Audio Left
Requires "Input Signal > Audio Generator".
Sets the level.
The nominal level, at which the modulation depth adjusts to the nominal modulation
depth, is 6 dBu. If the level is set to 6 dBu, the generated modulation depth corresponds to the set value.
You can set levels for one or two audio channels depending on the modulation mode:
●
●
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDGen:LEV1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDGen:LEV2 on page 65
Audio FM configuration and settings
FM modulator settings
If "Modulation > Mode > Mono", enable the audio channel, that is the left audio
channel.
If "Modulation > Mode > Stereo", set left or right audio levels separately.
If "Modulation > Mode > Mono", set the level related to the left audio channel.
Frequency ← Audio Left
Requires "Input Signal > Audio Generator".
Sets the frequency.
You can set frequencies for one or two audio channels depending on the modulation
mode:
●
If "Modulation > Mode > Stereo", set left or right audio frequencies separately.
●
If "Modulation > Mode > Mono", set the frequency related to the left audio channel.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDGen:FRQ1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDGen:FRQ2 on page 65
Attenuation ← Audio Left
Requires "Input Signal > Audio Player".
Sets the attenuation.
You can set the attenuation for one or two audio channels depending on the modula-
tion mode:
●
If "Modulation > Mode > Stereo", set left or right attenuations separately.
●
If "Modulation > Mode > Mono", set the attenuation related to the left audio channel.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:APLayer:ATT1 on page 64
[:SOURce<hw>]:BB:RADio:FM:APLayer:ATT2 on page 64
Audio Right
Displaying the panel requires "Modulation > Mode > Stereo".
The panel groups level and frequency parameters of the right audio channel.
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Audio ← Audio Right
Enables or disables the audio channel.
You can enable 1 or 2 audio channels depending on the modulation mode:
●
●
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:AF1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDio:AF2 on page 65
Level ← Audio Right
Requires "Input Signal > Audio Generator".
Sets the level.
The nominal level, at which the modulation depth adjusts to the nominal modulation
depth, is 6 dBu. If the level is set to 6 dBu, the generated modulation depth corresponds to the set value.
You can set levels for one or two audio channels depending on the modulation mode:
●
●
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDGen:LEV1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDGen:LEV2 on page 65
Audio FM configuration and settings
FM modulator settings
If "Modulation > Mode > Stereo", enable left or right audio channel separately.
If "Modulation > Mode > Mono", enable the audio channel, that is the left audio
channel.
If "Modulation > Mode > Stereo", set left or right audio levels separately.
If "Modulation > Mode > Mono", set the level related to the left audio channel.
Frequency ← Audio Right
Requires "Input Signal > Audio Generator".
Sets the frequency.
You can set frequencies for one or two audio channels depending on the modulation
mode:
●
If "Modulation > Mode > Stereo", set left or right audio frequencies separately.
●
If "Modulation > Mode > Mono", set the frequency related to the left audio channel.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDGen:FRQ1 on page 65
[:SOURce<hw>]:BB:RADio:FM:AUDGen:FRQ2 on page 65
Attenuation ← Audio Right
Requires "Input Signal > Audio Player".
Sets the attenuation.
You can set the attenuation for one or two audio channels depending on the modula-
tion mode:
●
If "Modulation > Mode > Stereo", set left or right attenuations separately.
●
If "Modulation > Mode > Mono", set the attenuation related to the left audio channel.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:APLayer:ATT1 on page 64
[:SOURce<hw>]:BB:RADio:FM:APLayer:ATT2 on page 64
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Load File
Requires "Input Signal > Audio Player".
Provides access to the standard "File Select" function of the instrument. The provided
navigation possibilities in the dialog are self-explanatory.
See also, chapter "File and Data Management" in the R&S SMCV100B User Manual.
You can load files with extension *.wv and *.wav. If loaded, the name of the file is
displayed next to the button.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:APLayer:LIBRary:CATalog on page 64
[:SOURce<hw>]:BB:RADio:FM:APLayer:LIBRary:SELect on page 65
Predefined Files ← Load File
The tab list predefined files and displays information on the file. For an overview, see
the table below.
Table 4-1: File information
Audio FM configuration and settings
FM modulator settings
File information Remark
Date Format: <dd-mm-yyyy>
Time Format: <hh:mm:ss>
Size File size in Mbyte, Increment: 0.00001 Mbyte
Sample rate Supported sample rates: 44.1 kHz and 48 kHz
Number of samples -
Example: Loading a predefined file
Select "Load File > Predefined Files" and select the audio file
default_sine_1khz.wav in the list.
Information on the file is displayed on the right panel. See also Table 3-1.
To load the file, click "Select". The file is displayed on the "Load File" button.
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Source
Requires "Input Signal > External".
Displays the audio source, that is fixed to S/PDIF.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:SOURce? on page 66
Audio FM configuration and settings
FM modulator settings
4.2.2 Modulation settings
Access:
► Select "FM Modulator > Modulation".
The tab provides FM modulation settings.
Settings:
Mode............................................................................................................................. 26
Preemphasis................................................................................................................. 26
Nom. Freq. Dev. Audio..................................................................................................26
Freq. Dev. Audio............................................................................................................26
Freq. Dev. Pilot..............................................................................................................26
RDS/RBDS....................................................................................................................27
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Freq. Dev. RDS............................................................................................................. 27
DARC............................................................................................................................27
Freq. Dev. DARC...........................................................................................................27
Mode
Sets the FM mode.
"Stereo"
Audio FM configuration and settings
FM modulator settings
Feeds a stereo signal to the modulator according to the multiplex
method with:
●
Pilot tone: 19 kHz tone. You can disable the pilot tone and set the
pilot deviation. See "Pilot" on page 54 and "Freq. Dev. Pilot"
on page 26.
●
RDS: 57 kHz, see "RDS/RBDS" on page 27.
"Mono"
Remote command:
[:SOURce<hw>]:BB:RADio:FM:MODE on page 67
Preemphasis
Sets the preemphasis factor for the signal to noise ratio improvement.
To improve the SNR, the technique boosts high-frequency components at the modula-
tor and reduces them at the demodulator.
Example:
The level increase at an input frequency of 15 kHz and a pre-emphasis of 50 μs is
13.66 dB. At a pre-emphasis of 75 μs, the SNR is 17.07 dB.
The audio input level for audio generator and audio player therefore needs to be
reduced in line with the pre-emphasis.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:PREemphasis on page 66
Nom. Freq. Dev. Audio
Defines the signal deviation, that is the deviation only caused by the audio signals.
The nominal deviation is 6 dBu.
Feeds a mono signal to the modulator with band limitation 15 kHz.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:NDEViation on page 66
Freq. Dev. Audio
Displays the actual frequency deviation.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:AUDio:DEViation? on page 65
Freq. Dev. Pilot
Defines the resulting 19 kHz frequency deviation of the pilot tone irrespective of the
audio signals.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:PILot:DEViation on page 68
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RDS/RBDS
Requires "Mode > Stereo".
Enables/disables RDS/RBDS.
If enabled, adds a 57 kHz RDS signal to the multiplex signal in accordance with the
specification EN 62106.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS[:STATe] on page 70
Freq. Dev. RDS
Requires "Mode > Stereo" and "RDS/RBDS > On".
Defines the resulting frequency deviation of the radio data system irrespective of the
audio signals.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:DEViation on page 68
DARC
Requires "Mode > Stereo".
Enables/disables DARC.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:DARC[:STATe] on page 87
Audio FM configuration and settings
RDS/RBDS settings
Freq. Dev. DARC
Requires "Mode > Stereo" and "DARC > On".
Sets the DARC frequency deviation.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:DARC:DEViation on page 87
4.3 RDS/RBDS settings
Requires "Baseband > Audio FM > FM Modulator > Mode > Stereo" and "Baseband >
Audio FM > FM Modulator > RDS/RDBS > On".
Access:
► Select "Baseband > Audio FM > RDS/RDBS".
The dialog provides general, MS, DI and CT RDS/RBDS settings.
The integrated RDS coder provides a versatile and flexible means of generating an
RDS data stream. It enables data for all the important group types to be entered as
menu inputs.
For group types provided for ODA, see Chapter 4.6.2, "Open format settings",
on page 51. You can define the data content of blocks 2, 3 and 4 using hexadecimal
input. The all-purpose input design means that there is no need to distinguish between
RDS and RBDS.
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Settings:
● General settings......................................................................................................28
● MS/DI/CT settings...................................................................................................32
4.3.1 General settings
Access:
► Select "RDS/RDBS > General".
Audio FM configuration and settings
RDS/RBDS settings
The tab provides general settings necessary to configure the RDS.
Settings:
Group Sequence...........................................................................................................28
PI...................................................................................................................................29
PS................................................................................................................................. 29
TP..................................................................................................................................30
TA..................................................................................................................................30
PTY............................................................................................................................... 30
PTYN.............................................................................................................................30
RT..................................................................................................................................31
MS.................................................................................................................................31
Group Sequence
Defines the group sequence, that specifies the order of groups.
The group sequence is mandatory within the RDS data. The input field accepts up to
38 groups. A group consists of a group number and a version ("0A" to "15B"). Separate
groups by setting a comma or a space.
If you enter a group number without specifying version A or B, the software adds version A automatically.
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The RDS/RBDS transmission rate is approximately 11.4 group types per second. For
this reason, the repetition rate per time unit is determined decisively from the group
sequence inputs.
Note: Settings on the "RDS/RBDS" tab only take effect, if you enter the related group
in the group sequence.
Once the entered groups have been fully transmitted, the group sequence is repeated.
"4A"
"14B"
"15A"
"15B"
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:GROup:SEQuence on page 68
Audio FM configuration and settings
RDS/RBDS settings
Requires "MS/DI/CT > CT > On".
Reserved group. Inserts the current CT automatically at each full
minute.
Reserved group for appropriate EON setting. The group is automatically sent 8 times.
For more information, see specification EN 62106.
Reserved group for ODA.
Reserved group for appropriate setting. The group is automatically
sent 8 times.
For more information, see specification EN 62106.
PI
Sets the program identification, that is a 16-bit value in hexadecimal representation.
The usage differs for RDS and RBDS operation:
●
RDS: The PI consists of a code enabling the receiver to distinguish between countries and regions in that the same program is transmitted, and the programs themselves.
It 16-bit value comprises the country code (bit 15 to bit 12), the program type (bit 11
to bit 8) and the program reference number (bit 7 to bit 0).
●
RBDS: In North America, the program identification code is used differently. In part,
the broadcasting stations define the program identification code themselves.
The PI is transmitted in each group type. For A group types, the PI is transmitted in
block 1. For B group types, it is transmitted in block 1 and block 3.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:PI on page 69
PS
Sets the program service name.
Group types "0A" or "0B" transmit the PS in addition to the PI. The PS is transmitted in
block 4 in both version A and version B.
You can enter an 8-character PS code, e.g. "R&S SMCV". For allowed character sets,
see Figure A-1.
Note: Not all receivers can display the full character set. For an overview of the dis-
played information, see Table A-1 and Table A-2.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:PS on page 69
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TP
Enable/disables the traffic program flag.
A program carries regular traffic reports and is identified by the TP bit. It specifies, that
TA is set, if a traffic announcement occurs. The information is transmitted in block 2 of
each group.
If enabled, the "TA" can identify traffic announcements.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:TP[:STATe] on page 70
TA
Enables/disables the traffic announcement flag.
If enabled, transmits the TA in block 2 of group types "0A", "0B" and "15B" to identify a
traffic announcement.
If the TA is set or reset, group type "15B" is transmitted 8 times to guarantee transmis-
sion, even if difficult reception conditions are present.
Table 4-2: Implication of TP/TA combinations
Audio FM configuration and settings
RDS/RBDS settings
TP TA Implication
"Off" "Off" The program contains no traffic program.
"Off" "On" The program points to EON on a transmitter with traffic program.
Required setting for EON.
"On" "Off" The program provides a TP and sets TA to 1, if a traffic announcement
occurs.
"On" "On" A regular traffic announcement is indicated.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:TA on page 70
PTY
Sets the program type.
The program type refers to the transmission content identifier and is transmitted in
block 2 of each group type. 32 possible program types are defined (0 to 31). After
entering the number, the assigned program type is displayed.
For RDS and RBDS, different group types are available, see Table A-1 and Table A-2.
Remote command:
[:SOURce<hw>]:BB:RADio:FM:RDS:PTY on page 69
PTYN
Sets the program type name.
The PTYN allows you to specify the PTY. For example, for RDS "PTY > 4" implies a
"Sport" program, that you can further specify by "Football".
PTYN is optional and is transmitted in group type "10A", blocks 3 and 4. PTYN is only
transmitted if group type "10A" is specified in "Group Sequence".
You can enter an 8-character PTYN. For allowed character sets, see Figure A-1.
30User Manual 1179.1012.02 ─ 04
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