Rohde & Schwarz TETRA Release 2 User manual

TETRA Release 2
Digital Standard for
R&S®Signal Generators
Operating Manual
Operating Manual
1173.0843.12 ─ 11
(;×8[<)
Test & Measurement

This document describes the following software options:
●R&S®SMBV-K68
1415.8490.xx
●R&S®SMU-K68
1408.8217.02
●R&S®AMU-K68
1403.0601.02
●R&S®SMATE-K68
1404.8664.02
●R&S®SMJ-K68
1409.3102.02
This manual version corresponds to firmware version:
FW 3.20.281.xx and later of the R&S®SMBV100A
FW 2.20.360.142 and later of the R&S®SMU200A, R&S®SMATE200A, R&S®SMJ100A and
R&S®AMU200A
© 2015 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: [phone] - 0
Fax: [phone]
Email: [email protected]
Internet: www.rohde-schwarz.com
Subject to change – Data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.
The following abbreviations are used throughout this manual: R&S®SMBV100A is abbreviated as R&S SMBV, R&S®SMU200A is
abbreviated as R&S SMU, R&S®AMU200A is abbreviated as R&S AMU, R&S®SMATE200A is abbreviated as R&S SMATE,
R&S®SMJ100A is abbreviated as R&S SMJ, R&S®WinIQSIM2TM is abbreviated as R&S WinIQSIM2; the license types
02/03/07/11/13/16/12 are abbreviated as xx.

ContentsTETRA Release 2
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Contents
1 Preface.................................................................................................... 5
1.1 Documentation Overview............................................................................................. 5
1.2 Conventions Used in the Documentation...................................................................6
1.2.1 Typographical Conventions.............................................................................................6
1.2.2 Notes on Screenshots.....................................................................................................7
1.2.3 Naming of Software Options........................................................................................... 7
2 Introduction............................................................................................ 8
3 User Interface......................................................................................... 9
3.1 General Settings..........................................................................................................10
3.2 Power Ramp Control...................................................................................................14
3.3 BSCH / BNCH/T........................................................................................................... 16
3.3.1 TETRA Frequency........................................................................................................ 17
3.3.2 Contents Settings..........................................................................................................19
3.3.3 Scrambling.................................................................................................................... 22
3.4 Burst Editor................................................................................................................. 23
3.5 Filter / Clipping Settings.............................................................................................27
3.5.1 Filter Settings................................................................................................................ 27
3.5.2 Modulation Settings.......................................................................................................28
3.5.3 Clipping Settings........................................................................................................... 28
3.6 Trigger/Marker/Clock Settings................................................................................... 29
3.6.1 Trigger Settings.............................................................................................................30
3.6.2 Marker Mode Settings................................................................................................... 35
3.6.3 Marker Delay Settings...................................................................................................36
3.6.4 Clock Settings............................................................................................................... 36
3.7 Global Settings............................................................................................................38
4 Remote Control Commands................................................................39
4.1 Primary Settings..........................................................................................................40
4.2 Power Ramp Settings................................................................................................. 45
4.3 Slot Configuration Settings........................................................................................47
4.4 BSCH / BNCH/T Settings............................................................................................ 55

ContentsTETRA Release 2
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4.5 Trigger/Marker/Clock Settings................................................................................... 64
4.5.1 Clock Settings............................................................................................................... 64
4.5.2 Trigger Settings.............................................................................................................66
4.5.3 Marker Settings............................................................................................................. 71
4.6 Filter/Clipping Settings...............................................................................................74
List of Commands................................................................................77
Index......................................................................................................80

PrefaceTETRA Release 2
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1 Preface
1.1 Documentation Overview
The user documentation for the R&S Signal Generator consists of the following parts:
●Online Help system on the instrument,
●"Quick Start Guide" printed manual,
●Documentation CD-ROM with:
– Online help system (*.chm) as a standalone help,
– Operating Manuals for base unit and options,
– Service Manual,
– Data sheet and specifications,
– Links to useful sites on the R&S internet.
Online Help
The Online Help is embedded in the instrument's firmware. It offers quick, context-sen-
sitive access to the complete information needed for operation and programming. The
online help contains help on operating the R&S Signal Generator and all available
options.
Quick Start Guide
The Quick Start Guide is delivered with the instrument in printed form and in PDF for-
mat on the Documentation CD-ROM. It provides the information needed to set up and
start working with the instrument. Basic operations and an example of setup are descri-
bed. The manual includes also general information, e.g., Safety Instructions.
Operating Manuals
The Operating Manuals are a supplement to the Quick Start Guide. Operating Manuals
are provided for the base unit and each additional (software) option.
These manuals are available in PDF format - in printable form - on the Documentation
CD-ROM delivered with the instrument. In the Operating Manual for the base unit, all
instrument functions are described in detail. Furthermore, it provides an introduction to
remote control and a complete description of the remote control commands with pro-
gramming examples. Information on maintenance, instrument interfaces and error
messages is also given.
In the individual option manuals, the specific functions of the option are described in
detail. For additional information on default settings and parameters, refer to the data
sheets. Basic information on operating the R&S Signal Generator is not included in the
option manuals.
Documentation Overview

PrefaceTETRA Release 2
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Service Manual
The Service Manual is available in PDF format - in printable form - on the Documenta-
tion CD-ROM delivered with the instrument. It describes how to check compliance with
rated specifications, on instrument function, repair, troubleshooting and fault elimina-
tion. It contains all information required for repairing the instrument by the replacement
of modules.
This manual can also be orderd in printed form (see ordering information in the data
sheet).
Release Notes
The release notes describe new and modified functions, eliminated problems, and last
minute changes to the documentation. The corresponding firmware version is indicated
on the title page of the release notes. The current release notes are provided in the
Internet.
Web Help
The web help provides online access to the complete information on operating the
R&S Signal Generator and all available options, without downloading. The content of
the web help corresponds to the user manuals for the latest product version.
The web help is available on the R&S Signal Generator product page at the Down-
loads > Web Help area.
Application Notes
Application notes, application cards, white papers and educational notes are further
publications that provide more comprehensive descriptions and background informa-
tion.
The latest versions are available for download from the Rohde & Schwarz website, at
http://www.rohde-schwarz.com/appnotes.
1.2 Conventions Used in the Documentation
1.2.1 Typographical Conventions
The following text markers are used throughout this documentation:
Convention Description
"Graphical user interface ele-
ments"
All names of graphical user interface elements on the screen, such as
dialog boxes, menus, options, buttons, and softkeys are enclosed by
quotation marks.
KEYS Key names are written in capital letters.
Conventions Used in the Documentation

PrefaceTETRA Release 2
7Operating Manual 1173.0843.12 ─ 11
Convention Description
File names, commands,
program code
File names, commands, coding samples and screen output are distin-
guished by their font.
Input Input to be entered by the user is displayed in italics.
Links Links that you can click are displayed in blue font.
"References" References to other parts of the documentation are enclosed by quota-
tion marks.
1.2.2 Notes on Screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as much as possible of the provided functions and
possible interdependencies between parameters. The shown values may not represent
realistic test situations.
The screenshots usually show a fully equipped product, that is: with all options instal-
led. Thus, some functions shown in the screenshots may not be available in your par-
ticular product configuration.
1.2.3 Naming of Software Options
In this operating manual, we explicitly refer to options required for specific functions of
the digital standard.
The name of software options for signal generators vary in the name of the instrument,
but the option name is identical. Therefore we use in this manual the placeholder
R&S SMx/AMU.
Example:
Naming for an option of the vector signal generator R&S SMBV100A, e.g:
●R&S SMx/AMU-K99, stands for R&S SMBV-K99
The particular software options available for the corresponding instruments are listed
on the back of the title page.
Conventions Used in the Documentation

IntroductionTETRA Release 2
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2 Introduction
The R&S SMx/AMU-K68 enables you to to generate signals in accordance with the
standard Terrestrial Trunked Radio Release 2 (TETRA2).
To playback a signal from a waveform file created by the simulation software
R&S WinIQSIM2, the corresponding R&S WinIQSIM2 digital standard option must be
installed.
The following list gives an overview of the main options provided by the R&S Signal
Generator for generating an TETRA signal in accordance with ETSI EN 300 392-2.
●The TETRA frame (bit stream) is generated according to the selected burst type,
i.e. control burst (CB), normal burst (NB) or synchronization burst (SB).
●The frames are generated for the uplink (mobile station [MS] transmitting) or the
downlink (base station [BS] transmitting).
●The channel types AACH, BSCH, BNCH, TCH, STCH, SCH as well as the TETRA
Release 2 specific channels like SCH-Q, etc. are generated.
●Channel coding including scrambling with system code, base color code, mobile
country code and mobile network code is performed for all channels.
●Frame repetition can be selected via sequence length.
●The T1 test signal is generated for the V+D (voice and data) test on MS and BS
DUTs.
●Test channel types can be set for the downlink and for the uplink.
●The bit stream can be generated either from pseudo-random sequences (CCITT O.
153) or from user-selectable sequences.
●The R&S Signal Generator calculates the appropriate TETRA2 T1, T2, T3 and T4
signal according to the specifiction.
●Additionaly, user-defined test signal can be generated.

User InterfaceTETRA Release 2
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3 User Interface
To access the menu for setting the TETRA digital standard, select "Baseband Block >
Config > TETRA" or press the MENU key and select "Baseband > TETRA".
The menu is split into three sections for configuring the standard. The choice of trans-
mission direction determines which displays and parameters are made available in the
middle section.
The upper section of the menu is where the TETRA digital standard is enabled, the
default settings are called, the transmission direction selected and the test mode is set.
The section for setting the trigger and clock parameters, data list management, or sav-
ing and loading a frame and for setting the power ramping and slot attenuation are
available for the modes T1, T2, T4 and User.
The lower part of the menu displays the chosen frame configuration. In this graphical
display you can select the slot that you wish to edit. The frame editor then opens. Slots
for frame 1 to 17 and frame 18 can be activated and configured independently.
normal burst: control burst:

User InterfaceTETRA Release 2
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3.1 General Settings
State
Activates the standard and deactivates all the other digital standards and digital modu-
lation modes in the same path.
Remote command:
[:SOURce<hw>]:BB:TETRa:STATe on page 44
Set to Default
Calls the default settings. The values of the main parameters are listed in the following
table.
Parameter Value
State Not affected by "Set to Default"
Test Mode T1
Link Direction Downlink / Forward
Channel Type 0
Sequence Length 1 Multiframe
Power Ramp/Slot Attenuation cosine/ 2 / 0 / 0sym
Filter/Clipping Root Cosine / clipping Off
Trigger/Marker Auto/ Int
Clock Internal
Remote command:
[:SOURce<hw>]:BB:TETRa:PRESet on page 42
Save/Recall
Calls the Save/Recall menu.
From the "Save/Recall" dialog the "Save/Recall Settings" windows for saving and
recalling the configurations and the "File Manager" can be called.
TETRA configurations are stored as files with the predefined file extension *.tetra.
The file name and the directory they are stored in are user-definable.
The complete settings in the TETRA menu are saved and recalled.
"Recall Set-
tings"
Opens the "Recall Settings" window for loading a saved TETRA con-
figuration.
The configuration of the selected (highlighted) file is loaded by press-
ing the "Select" button.
Remote command:
[:SOURce<hw>]:BB:TETRa:SETTing:LOAD on page 42
General Settings

User InterfaceTETRA Release 2
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"Save Set-
tings"
Opens the "Save Settings" window for saving the current TETRA sig-
nal configuration.
The name of the file is specified in the "File name" entry field. The file
is saved by pressing the "Save" button.
The "Fast Save" checkbox determines whether the instrument per-
forms an absolute or a differential storing of the settings. Enable this
function to accelerate the saving process by saving only the settings
with values different to the default ones. "Fast Save" is not affected
by the "Preset" function.
Remote command:
[:SOURce<hw>]:BB:TETRa:SETTing:STORe on page 43
[:SOURce<hw>]:BB:TETRa:SETTing:STORe:FAST on page 43
"File Manager" Calls the "File Manager" dialog.
The "File Manager" is used to copy, delete and rename files and to
create new directories.
Remote command:
[:SOURce<hw>]:BB:TETRa:SETTing:CATalog? on page 42
Remote command:
[:SOURce<hw>]:BB:TETRa:SETTing:DELete on page 42
Data List Management
Calls the "Data List Management" dialog. This dialog is used to create and edit a data
list.
All data lists are stored as files with the predefined file extension *.dm_iqd. The file
name and the directory they are stored in are user-definable.
The data lists must be selected as a data source from the submenus under the individ-
ual function.
Example: Creating and editing the data list
SOUR:BB:DM:DLIS:SEL "TETRA"
SOUR:BB:DM:DLIS:DATA 1,1,0,1,0,1,0,1,1,1,1,0,0,0
SOUR:BB:DM:DLIS:DATA:APP 1,1,0,1,0,1,0,1,1,1,1,0,0,0
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA on page 50
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA:DSELection on page 51
General Settings

User InterfaceTETRA Release 2
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Generate Waveform File
Opens the submenu for storing the current TETRA signal as ARB signal in a waveform
file. This file can be loaded in the "ARB" dialog and processed as multicarrier or multi-
segment signal.
The file name is entered in the submenu. The file is stored with the predefined file
extension *.wv. The file name and the directory it is stored in are user-definable.
Remote command:
[:SOURce<hw>]:BB:TETRa:WAVeform:CREate on page 45
Test Mode
Selects the test mode.
Several settings depends on the selected test model.
"T1" Test signal T1 (TETRA wanted signal, phase modulated)
This test mode enables the generation of test signal that comply with
the TETRA air interface multiframe, frame and slot structure. The T1
test signal is generated according to EN 300 394-1V3.1.1 and is
intended to be the wanted signal transmitted by the test system dur-
ing frames 1 to 17 in all receiver tests.
The signal is pi/4-DQPSK or pi/8-D8PSK modulated. Frame 18 trans-
mits information for control purposes.
To enable configuration of the T1 signal for different receiver tests,
the channel type for the "T1" signal is user-selectable. Channel types
0 to 4, 21, 22 and 25 are available in the Downlink/Forward "Link
Direction" and channel types 7 to 11, 21, 23 and 24 for the Uplink/
Reverse direction.
The burst types Uplink/Reverse and Downlink/Forward are derived
from the channel types. The instrument generates the Tx data for
complete multiframes for the V+D service (voice and data). The con-
tents of data fields are automatically inserted according to the burst
type. The control block (cb), blocks 1 + 2 (bk), the synchronization
block (sb) and the broadcast block (bb) for test signal T1 are gener-
ated according to the frame number and the channel type.
"T4" Test signal T4 (TETRA wanted signal, QAM modulated)
The test signal T4 comply with the TETRA air interface multiframe,
frame and slot structure. The T4 test signal is intended to be the wan-
ted signal transmitted by the test system during frames 1 to 17 in all
receiver tests. Except form frame 18, the signal is 4-QAM, 16-QAM or
64-QAM modulated. Frame 18 transmits information for control pur-
poses and is QAM and phase modulated (QAM + pi/4-DQPSK); the
frame is generated according to EN 300 394-1.
"User Defined" Enables the generation of user-defined test signal.
"T2" Test signal T2 (TETRA interfer)
The T2 test signal is phase or QAM modulated, depending on the
selected Modulation Type.
General Settings

User InterfaceTETRA Release 2
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"T3" Test sugnal T3 (unmodulated interferer)
The T3 test signal is an unmodulated continuous sinusoidal out-of-
band interfering signal.
Remote command:
[:SOURce<hw>]:BB:TETRa:TMODe on page 44
Link Direction
Selects the transmission direction.
This parameter determines the available "Channel Types".
"Downlink/
Forward"
The transmission direction selected is from the base station (BS) to
the terminal (MS). The signal corresponds to that of a BS.
"Uplink/
Reverse"
The transmission direction selected is from MS to the BS. The signal
corresponds to that of a terminal.
Remote command:
[:SOURce<hw>]:BB:TETRa:LDIRection on page 41
Channel Type
(for "Test Model" set to T1 or T4)
Determines the channel type.
Remote command:
[:SOURce<hw>]:BB:TETRa:CTYPe on page 40
Modulation Type
(for "Test Model" set to User Defined)
Determines the modulation type, "Phase" or "QAM."
"Phase" The T2 test signal is a pi/4-DQPSK modulated continuous radio sig-
nal.
"QAM" The T2 test signal is 4-QAM, 16-QAM or 64-QAM modulated and
spans a bandwidth of 25kHz, 50kHz, 100kHz or 150kHz.
Remote command:
[:SOURce<hw>]:BB:TETRa:MTYPe on page 41
Downlink Burst Type
(in Downlink "Link Direction" and for "Test Model" set to T2 or User Defined)
Determines whether a discontinuous or continuous downlink burst type is used.
Remote command:
[:SOURce<hw>]:BB:TETRa:DBTYpe on page 41
Sequence Length
Selects the sequence length of the arbitrary waveform file in the number of multi-
frames. One multiframe is the minimum sequence length for a T1 signal.
Remote command:
[:SOURce<hw>]:BB:TETRa:SLENgth on page 44
General Settings

User InterfaceTETRA Release 2
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Power Ramp/Slot Attenuations
Calls the "Power Ramp Control" dialog. This dialog is used to set the power ramping
parameters and for setting values for the level attenuation in dB (see chapter 3.2,
"Power Ramp Control", on page 14).
The currently selected ramp function and ramp time are displayed.
BSCH / BNCH/T
Calls the "BSCH / BNCH/T" dialog. This dialog is used to configure the frequency set-
tings, the scrambling code and the content of the Broadcast Synchronization Channel
(BSCH) and the Broadcast Network Channel (BNCH/T) (see chapter 3.3, "BSCH /
BNCH/T", on page 16).
Filter/Clipping
Calls the dialog for setting baseband filtering, clipping and modulation settings
(seechapter 3.5, "Filter / Clipping Settings", on page 27 ).
The current settings are displayed.
Trigger/Marker/Clock
(Trigger and clock settings for R&S SMx and R&S AMU instruments only)
Calls the dialog for selecting the trigger source, for configuring the marker signals and
for setting the time delay of an external trigger signal, and for selecting the clock
source. This dialog is described in chapter 3.6, "Trigger/Marker/Clock Settings",
on page 29.
The current settings are displayed.
Execute Trigger
for R&S SMx and R&S AMU instruments only
Executes trigger manually. A manual trigger can be executed only when an internal
trigger source and a trigger mode other than "Auto" have been selected.
Remote command:
[:SOURce<hw>]:BB:TETRa:TRIGger:EXECute on page 67
Clock
The clock functions ara available for R&S SMx and R&S AMU instruments only.
Slot Selection Graph for Frame 1-17 and Frame 18
Opens the Burst Editor dialog.
3.2 Power Ramp Control
This dialog provides access to the settings for power ramping and slot attenuation.
To access this dialog select "Baseband > TETRA... > Power Ramp/Slot Attenua-
tions...".
This dialog is used to enter the settings for power ramping and level attenuation. The
"Slot Attenuations" (used in "Frame Editor") section is used to define four possible val-
Power Ramp Control

User InterfaceTETRA Release 2
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ues for level attenuation. These values can be selected from the frame editor for the
slot currently being edited.
"Slot Level Full" setting in the frame editor corresponds to 0 dB attenuation.
Provided are the following settings:
Ramp Function
Enters the form of the transmitted power during the switching operation, i.e. the shape
of the rising and falling edges of the envelope.
"Linear" The transmitted power rises and falls linear fashion.
"Cosine" The transmitted power rises and falls with a cosine-shaped edge.
This gives rise to a more favorable spectrum than the "Linear" setting.
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:RFUNction on page 45
Ramp Time
Enters the power ramping rise time and fall time for a frame. The setting is expressed
in symbols.
The transmitted power must not be switched abruptly at the start and end of a frame,
because the switching operation would otherwise generate excessively strong non-har-
monics; the switching operation is therefore stretched over several symbol clocks
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:RTIMe on page 46
Power Ramp Control

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Rise Offset
Sets the offset in the rising edge of the envelope at the start of a frame. A positive
value gives rise to a delay and a negative value causes an advance. The setting is
expressed in symbols.
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:ROFFset on page 46
Fall Offset
Sets the offset in the falling edge of the envelope at the end of a frame. A positive
value gives rise to a delay and a negative value causes an advance. The setting is
expressed in symbols.
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:FOFFset on page 45
Slot Attenuation A1 to A4
Enters four different values for level attenuation.
The frame editor can be used to set the level attenuation for the four slots to one of
these predefined values independently of one another.
The entered value determines the slot output power (slot power = RF power - attenua-
tion). 0 dB attenuation corresponds to "Slot Level" = Full.
This feature is provided to set a sequence of slots to different levels in order to mea-
sure transmission stability.
The frame editor is likewise used to assign the "Slot Level" attribute Attenuated to indi-
vidual slots.
Remote command:
[:SOURce<hw>]:BB:TETRa:SATTenuation<ch> on page 46
3.3 BSCH / BNCH/T
To access this dialog, select "Main dialog > BSCH / BNCH/T". In the "BSCH / BNCH/T"
dialog the contents of the Broadcast Synchronization Channel (BSCH) and the Broad-
cast Network Channel (BNCH/T) are configured. The BSCH and the BNCH are the two
possible Broadcast Control Channels (BCCH) that are transmitted in downlink direction
only. Hence, the parameters in this dialog provided to configure the content of the
channels are enabled only for "Link Direction" set to Downlink/Forward. The "BSCH /
BNCH/T" dialog is divided into several sections. The "TETRA Frequency" section com-
prises of the parameters necessary to set the carrier bandwidth and the frequency
band. The section is enabled in both link directions.
BSCH / BNCH/T

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The "Contents Setting" section is enabled in downlink direction only. In the downlink
mode, a synchronization burst is used to control the MS messages. In this burst, proto-
col elements are transmitted in BSCH and BNCH. The parameters are used to form
the commands for the mobile station.
The "Srcambling" section comprises of the parameters necessary to configure the
scrambling sequence.
3.3.1 TETRA Frequency
Provided are the following settings:
Carrier Bandwidth
Selects the carrier bandwidth, i.e. determines the carrier spacing.
The default value for all standard test modes is 25kHz; carrier spacing of 50, 100 and
150 kHz is enabled for "Test Mode" set to User Defined or T4.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:CBANdwidth on page 57
BSCH / BNCH/T

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Main Carrier Number
The "Main Carrier Number" divides the TETRA band into carriers with a spacing as set
with the parameter "Carrier Bandwidth". The range is 0 to 4095 (12 bits).
The Main Carrier Frequency is calculated as follow:
Main Carrier Frequency, kHz = "Main Carrier Number" * "Carrier Bandwidth"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MCNumber on page 60
Frequency Band
Sets the "Frequency Band".
This setting has an effect on the calculation of the transmission frequency. The Fre-
quency Band Information is inserted only in the TETRA BSCH protocol channel.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:FBANd on page 59
Offset
Set the "Offset" to shifft the center frequency in the channel spacing. The allowed off-
sets are +6.25, 0,–6.25 and +12.50 kHz.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:OFFSet on page 61
Duplex Spacing
(for Uplink direction only)
The "Duplex Spacing" and "Reverse Operation" parameters in the BNCH/T indicate the
required uplink frequency with respect to the indicated downlink frequency. These
parameters are defined in ETSI 300 392-2.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:DSPacing on page 58
Reverse Operation
(for Uplink direction only)
Enables/disables reverse operation.
Reverse operation is used to fix the uplink frequency relative to the downlink fre-
quency. In normal operation, the uplink frequency is lower than the downlink frequency
and in reverse operation, the uplink frequency is higher than the downlink frequency.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:ROPeration on page 61
Coded RF Frequency
Displays the resulting RF frequency, calculated from the previous settings. The fre-
quency is calculated from the "Frequency Band", "Main Carrier Number", "Offset",
"Duplex Spacing" and "Reverse Operation" and transmitted in message channel
BNCH/T when Downlink MS V+D Testing is selected.
The "Coded RF Frequency" is calculated as described in table 3-1.
BSCH / BNCH/T

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Table 3-1: Calculation of Coded RF Frequency
"Link Direc-
tion"
"Reverse Opera-
tion"
"Coded RF Frequency", MHz
Downlink - Downlink Coded RF Frequency = "Frequency Band" + ("Main Car-
rier Number"* "Carrier Bandwidth") + "Offset"
Uplink Off
(Normal opera-
tion)
Uplink Coded RF Frequency = Downlink Coded RF Frequency -
"Duplex Spacing"
On Uplink Coded RF Frequency = Downlink Coded RF Frequency +
"Duplex Spacing"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:CRFRequency? on page 57
3.3.2 Contents Settings
The "Contents Setting" section is enabled in downlink direction only.
Provided are the following settings.
System Code
Indicate whether the system is a TETRA V+D system or whether this is a Direct Mode
transmission.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:SCODe on page 61
TS reserved frames
Determines the number of frames reserved over two multiframes period.
The way this field is processed, depends on the selected "Sharing Mode"
on page 20. If MCCH sharing is indicated, the TS reserved frames field shall indicate
which frames are reserved in this mode of operation. For the other values of sharing
mode, the contents of the TS reserved frames field shall be ignored.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:TRFRames on page 62
Frame 18 extension
Enables/disables the frame 18 extension element, i.e. indicates whether an MS is
allowed to receive downlink information on all slots of the frame 18. If extension is
allowed, only MSs which are capable of receiving consecutive slots are able to perform
this function.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:FEEXtension on page 59
BSCH / BNCH/T

User InterfaceTETRA Release 2
20Operating Manual 1173.0843.12 ─ 11
Sharing Mode
The sharing mode field indicates whether the BS is using continuous transmission, car-
rier sharing, MCCH sharing or traffic carrier sharing.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:SMODe on page 62
U-plane DTX
The "U-plane DTX" element indicates whether or not the BS supports discontinuous
traffic transmission by the MS.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:UPDTx on page 63
D-NWRK-BROADCAST broadcast
Enables/disables support of the D-NWRK-BROADCAST PDU.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:DNBBroadcast on page 58
D-NWRK-BROADCAST enquiry
Enables/disables support of the D-NWRK-BROADCAST enquiry.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:DNBenquiry on page 58
Cell service level
Sets the cell service level information element, i.e. define the level of service a MS may
receive in a cell. It may relate to the traffic loading in a cell.
The following service levels are supported:
●"Cell load unknown"
●"Low cell load"
●"Medium cell load"
●"High cell load"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:CSLevel on page 57
MS_TXPWR_MAX_CELL
Sets the protocol information on the maximum transmission power for the mobile sta-
tion. Allowed are values from 15 dBm to 45 dBm in 5 dB steps.
The MS_TXPWR_MAX_CELL paramer is used for cell selection and reselection, and
for power adjustments.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MTMCell on page 61
Tx_on
Determines the value of the Tx_on parameter, i.e. selects the test mode the MS oper-
ates in, "Reception ON" or "Transmission ON".
This parameter is neccessary for the generation of test signal T1 or T4 transmitted by
the test system.
BSCH / BNCH/T