TETRA Release 2
Digital Standard for
R&S®Signal Generators
Operating Manual
(;×8[<)
1173.0843.12 ─ 12
Operating Manual
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 3.20.286.xx and later of the R&S®SMU200A, R&S®SMATE200A, R&S®SMJ100A and R&S®AMU200A
© 2016 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
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.
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
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...................................................................................................15
3.3 BSCH / BNCH/T........................................................................................................... 17
3.3.1 TETRA Frequency........................................................................................................ 18
3.3.2 Contents Settings..........................................................................................................20
3.3.3 Scrambling.................................................................................................................... 23
3.4 Burst Editor................................................................................................................. 24
3.5 Filter / Clipping Settings.............................................................................................28
3.5.1 Filter Settings................................................................................................................ 29
3.5.2 Modulation Settings.......................................................................................................29
3.5.3 Clipping Settings........................................................................................................... 30
3.6 Trigger/Marker/Clock Settings................................................................................... 31
3.6.1 Trigger Settings.............................................................................................................32
3.6.2 Marker Mode Settings................................................................................................... 36
3.6.3 Marker Delay Settings...................................................................................................37
3.6.4 Clock Settings............................................................................................................... 37
3.7 Global Settings............................................................................................................39
4 Remote Control Commands................................................................40
4.1 General Commands.................................................................................................... 42
4.2 Power Ramp Commands............................................................................................47
4.3 Slot Configuration Commands.................................................................................. 49
4.4 BSCH / BNCH/T Commands.......................................................................................58
3Operating Manual 1173.0843.12 ─ 12
ContentsTETRA Release 2
4.5 Filter/Clipping Commands......................................................................................... 66
4.6 Trigger Commands..................................................................................................... 69
4.7 Marker Commands......................................................................................................73
4.8 Clock Commands........................................................................................................77
List of Commands................................................................................81
Index......................................................................................................84
4Operating Manual 1173.0843.12 ─ 12
1 Preface
PrefaceTETRA Release 2
Documentation Overview
1.1 Documentation Overview
This section provides an overview of the R&S Signal Generator user documentation.
You find it on the product page at:
http://www.rohde-schwarz.com/product/SMBV100A.html > "Downloads"
Quick start guide
Introduces the R&S Signal Generator 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.
Online help
Offers quick, context-sensitive access to the complete information for the base unit and
the software options directly on the instrument.
Operating manual
Separate manuals for the base unit and the software options are provided for download:
●
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 quick start guide manual.
●
Software option manual
Contains the description of the specific functions of an option. Basic information on
operating the R&S Signal Generator is not included.
The online version of the operating manual provides the complete contents for immediate display on the Internet.
Service manual
Describes the performance test for checking the rated specifications, module replacement and repair, firmware update, troubleshooting and fault elimination, and contains
mechanical drawings and spare part lists.
The service manual is available for registered users on the global Rohde & Schwarz
information system (GLORIS, https://gloris.rohde-schwarz.com).
5Operating Manual 1173.0843.12 ─ 12
PrefaceTETRA Release 2
Conventions Used in the Documentation
Instrument security procedures manual
Deals with security issues when working with the R&S Signal Generator in secure
areas.
Basic safety instructions
Contains safety instructions, operating conditions and further important information.
The printed document is delivered with the instrument.
Data sheet and brochure
The data sheet contains the technical specifications of the software options, see "Digital Standards for Signal Generators - Data sheet" on the web site. It also lists the
options and their order numbers.
The brochure provides an overview of the instrument and deals with the specific characteristics.
Release notes and open source acknowledgment (OSA)
The release notes of the base units list new features, improvements and known issues
of the current firmware version, and describe the firmware installation.
The open source acknowledgment document provides verbatim license texts of the
used open source software. See the product page of the base unit, e.g. at:
http://www.rohde-schwarz.com/product/SMBV100A.html > "Downloads" > "Firmware"
Application Notes, Application Cards, White Papers, etc.
These documents deal with special applications or background information on particular topics, see 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 elements"
KEYS Key names are written in capital letters.
File names, commands,
program code
Input Input to be entered by the user is displayed in italics.
All names of graphical user interface elements on the screen, such as
dialog boxes, menus, options, buttons, and softkeys are enclosed by
quotation marks.
File names, commands, coding samples and screen output are distinguished by their font.
6Operating Manual 1173.0843.12 ─ 12
PrefaceTETRA Release 2
Conventions Used in the Documentation
Convention Description
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 installed. Thus, some functions shown in the screenshots may not be available in your particular 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.
7Operating Manual 1173.0843.12 ─ 12
IntroductionTETRA Release 2
2 Introduction
The R&S SMx/AMU-K68 enables you to generate signals in accordance with the standard Terrestrial Trunked Radio Release 2 (TETRA2).
To play back 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 a 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 are 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 specification.
●
Additionally, user-defined test signal can be generated.
8Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
3 User Interface
Access:
► Select "Baseband Block > Config > TETRA".
The dialog is split into three sections for configuring the standard.
In the upper section of the dialog, the TETRA digital standard is enabled. It provides
access to the default and "Save/Recall" settings, to the data list management and to a
file select dialog for creating a waveform file. In the middle section, the transmission
direction is selected the test mode is set. The transmission direction determines the
available parameters.
The trigger and clock parameters, data list management, saving and loading a frame,
setting the power ramping and slot attenuation are available for the modes T1, T2, T4
and User.
The lower part of the dialog displays the 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:
9Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
General Settings
Contents
● General Settings..................................................................................................... 10
● Power Ramp Control...............................................................................................15
● BSCH / BNCH/T......................................................................................................17
● Burst Editor............................................................................................................. 24
● Filter / Clipping Settings.......................................................................................... 28
● Trigger/Marker/Clock Settings.................................................................................31
● Global Settings........................................................................................................39
3.1 General Settings
The upper section of the dialog provides access to the default and "Save/Recall" settings.
Settings:
State..............................................................................................................................10
Set to Default................................................................................................................ 10
Save/Recall................................................................................................................... 11
Data List Management.................................................................................................. 11
Generate Waveform File............................................................................................... 12
Test Mode..................................................................................................................... 12
Link Direction................................................................................................................ 13
Channel Type................................................................................................................13
Modulation Type............................................................................................................13
Downlink Burst Type..................................................................................................... 14
Sequence Length.......................................................................................................... 14
Power Ramp/Slot Attenuations..................................................................................... 14
BSCH / BNCH/T............................................................................................................14
Filter/Clipping................................................................................................................ 14
Trigger/Marker/Clock.....................................................................................................14
Execute Trigger.............................................................................................................14
Clock............................................................................................................................. 14
Slot Selection Graph for Frame 1-17 and Frame 18..................................................... 15
State
Activates the standard and deactivates all the other digital standards and digital modulation modes in the same path.
Remote command:
[:SOURce<hw>]:BB:TETRa:STATe on page 46
Set to Default
Calls the default settings. The values of the main parameters are listed in the following
table.
10Operating Manual 1173.0843.12 ─ 12
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 44
User InterfaceTETRA Release 2
General Settings
Save/Recall
Accesses the "Save/Recall" dialog, that is the standard instrument function for storing
and recalling the complete dialog-related settings in a file. The provided navigation
possibilities in the dialog are self-explanatory.
The filename and the directory, in which the settings are stored, are user-definable; the
file extension is however predefined.
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.
Remote command:
[:SOURce<hw>]:BB:TETRa:SETTing:CATalog? on page 44
[:SOURce<hw>]:BB:TETRa:SETTing:STORe on page 45
[:SOURce<hw>]:BB:TETRa:SETTing:STORe:FAST on page 45
[:SOURce<hw>]:BB:TETRa:SETTing:LOAD on page 45
[:SOURce<hw>]:BB:TETRa:SETTing:DELete on page 45
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 individual function.
11Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
General Settings
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 53
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA:DSELection on page 54
Generate Waveform File
With enabled signal generation, triggers the instrument to store the current settings as
an ARB signal in a waveform file. Waveform files can be further processed by the ARB
and/or as a multi-carrier or a multi-segment signal.
The filename and the directory it is stored in are user-definable; the predefined file
extension for waveform files is *.wv.
Remote command:
[:SOURce<hw>]:BB:TETRa:WAVeform:CREate on page 47
Test Mode
Selects the test mode.
Several settings depend on the selected test model.
"T1"
Test signal T1 (TETRA wanted signal, phase modulated)
This test mode enables the generation of test signal that complies
with the TETRA air interface multiframe, frame and slot structure. The
T1 test signal is generated according to EN 300 394-1V3.1.1. It is
intended to be the wanted signal transmitted by the test system during frames 1 to 17 in all receiver tests.
The signal is pi/4-DQPSK or pi/8-D8PSK modulated. Frame 18 transmits 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 contents 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 generated according to the frame number and the channel type.
12Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
General Settings
"T4"
"User Defined"
"T2"
"T3"
Remote command:
[:SOURce<hw>]:BB:TETRa:TMODe on page 46
Link Direction
Selects the transmission direction.
This parameter determines the available "Channel Types".
"Downlink/
Forward"
"Uplink/
Reverse"
Remote command:
[:SOURce<hw>]:BB:TETRa:LDIRection on page 43
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 wanted 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 purposes and is QAM and phase modulated (QAM + pi/4-DQPSK); the
frame is generated according to EN 300 394-1.
Enables the generation of user-defined test signal.
Test signal T2 (TETRA interfere)
The T2 test signal is phase or QAM modulated, depending on the
selected Modulation Type.
Test signal T3 (unmodulated interferer)
The T3 test signal is an unmodulated continuous sinusoidal out-ofband interfering signal.
The transmission direction selected is from the base station (BS) to
the terminal (MS). The signal corresponds to that of a BS.
The transmission direction selected is from MS to the BS. The signal
corresponds to that of a terminal.
Channel Type
(for "Test Model" set to T1 or T4)
Determines the channel type.
Remote command:
[:SOURce<hw>]:BB:TETRa:CTYPe on page 43
Modulation Type
(for "Test Model" set to "User Defined")
Determines the modulation type, "Phase" or "QAM."
"Phase"
"QAM"
Remote command:
[:SOURce<hw>]:BB:TETRa:MTYPe on page 44
The T2 test signal is a pi/4-DQPSK modulated continuous radio signal.
The T2 test signal is 4-QAM, 16-QAM or 64-QAM modulated and
spans a bandwidth of 25kHz, 50kHz, 100kHz or 150kHz.
13Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
General Settings
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 43
Sequence Length
Selects the sequence length of the arbitrary waveform file in the number of multiframes. One multiframe is the minimum sequence length for a T1 signal.
Remote command:
[:SOURce<hw>]:BB:TETRa:SLENgth on page 46
Power Ramp/Slot Attenuations
Accesses 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 15).
The currently selected ramp function and ramp time are displayed.
BSCH / BNCH/T
Accesses the "BSCH / BNCH/T" dialog. This dialog is used to configure the frequency
settings, 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 17).
Filter/Clipping
Accesses the dialog for setting baseband filtering, clipping and modulation settings
(seeChapter 3.5, "Filter / Clipping Settings", on page 28 ).
The current settings are displayed.
Trigger/Marker/Clock
(Trigger and clock settings for R&S SMx and R&S AMU instruments only)
Acesses 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 31.
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 70
Clock
The clock functions are available for R&S SMx and R&S AMU instruments only.
14Operating Manual 1173.0843.12 ─ 12
Slot Selection Graph for Frame 1-17 and Frame 18
Accesses the Burst Editor dialog.
User InterfaceTETRA Release 2
Power Ramp Control
3.2 Power Ramp Control
This dialog provides access to the settings for power ramping and slot attenuation.
Access:
► Select "Baseband > TETRA... > Power Ramp/Slot Attenuations...".
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 values 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.
Settings:
Ramp Function..............................................................................................................15
Ramp Time....................................................................................................................16
Rise Offset.................................................................................................................... 16
Fall Offset......................................................................................................................16
Slot Attenuation A1 to A4.............................................................................................. 16
Ramp Function
Selects the form of the transmitted power, i.e. the shape of the rising and falling during
power ramp control.
15Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
Power Ramp Control
"Linear"
"Cosine"
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:RFUNction on page 48
Ramp Time
Sets the power ramping rise time and fall time for a frame. The setting is expressed in
symbols.
Do not switch the transmitted power abruptly at the end or the start of a frame, since
the switching operation generates excessively strong non-harmonics. The switching
operation is therefore stretched over several symbol clocks.
Remote command:
[:SOURce<hw>]:BB:TETRa:PRAMping:RTIMe on page 49
Rise Offset
Sets the offset in the rising edge of the envelope at the start of a frame. A positive
value causes 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 48
The transmitted power rises and falls linear fashion.
The transmitted power rises and falls with a cosine-shaped edge.
This setting causes a more favorable spectrum than the "Linear" setting.
Fall Offset
Sets the offset in the falling edge of the envelope at the end of a frame. A positive
value causes 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 48
Slot Attenuation A1 to A4
Sets the 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 set value determines the slot output power (slot power = RF power - attenuation).
0 dB attenuation corresponds to "Slot Level = Full".
This feature is provided to set a sequence of slots to different levels in order to measure transmission stability.
The frame editor is likewise used to assign the "Slot Level" attribute "Attenuated" to
individual slots.
Remote command:
[:SOURce<hw>]:BB:TETRa:SATTenuation<ch> on page 49
16Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
BSCH / BNCH/T
3.3 BSCH / BNCH/T
Access:
► Select "Main dialog > BSCH / BNCH/T".
In the "BSCH / BNCH/T" dialog, the contents of the broadcast synchronization
channel (BSCH) and the broadcast 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 comprises of the parameters necessary
to set the carrier bandwidth and the frequency band. The section is enabled in both
link directions.
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, protocol 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.
17Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
BSCH / BNCH/T
Contents
● TETRA Frequency.................................................................................................. 18
● Contents Settings....................................................................................................20
● Scrambling.............................................................................................................. 23
3.3.1 TETRA Frequency
This section cntains the parameters necessary to set the carrier bandwidth and the frequency band.
Settings:
Carrier Bandwidth......................................................................................................... 18
Main Carrier Number.....................................................................................................18
Frequency Band............................................................................................................18
Offset.............................................................................................................................19
Duplex Spacing............................................................................................................. 19
Reverse Operation........................................................................................................ 19
Coded RF Frequency....................................................................................................19
Carrier Bandwidth
Selects the carrier bandwidth, i.e. determines the carrier spacing.
The default value for all standard test modes is 25kHz. The carrier spacing of 50 kHz,
100 kHz and 150 kHz is enabled for "Test Mode" set to "User Defined" or "T4".
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:CBANdwidth on page 59
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 follows:
Main Carrier Frequency, kHz = "Main Carrier Number" * "Carrier Bandwidth"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MCNumber on page 62
Frequency Band
Sets the "Frequency Band".
This setting affects the calculation of the transmission frequency. The frequency band
information is inserted only in the TETRA BSCH protocol channel.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:FBANd on page 61
18Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
BSCH / BNCH/T
Offset
Set the "Offset" to shift the center frequency in the channel spacing. The allowed offsets are +6.25, 0,–6.25 kHz and +12.50 kHz.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:OFFSet on page 63
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 60
Reverse Operation
(for Uplink direction only)
Enables reverse operation.
Reverse operation is used to fix the uplink frequency relative to the downlink frequency. 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 63
Coded RF Frequency
Displays the resulting RF frequency, calculated from the previous settings. The frequency 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.
Table 3-1: Calculation of coded RF frequency
"Link Direction"
Downlink - Downlink coded RF Frequency = "Frequency Band" + ("Main Carrier
Uplink Off
"Reverse Operation"
(Normal operation)
On Uplink coded RF Frequency = Downlink coded RF Frequency +
"Coded RF Frequency", MHz
Number"* "Carrier Bandwidth") + "Offset"
Uplink coded RF Frequency = Downlink coded RF Frequency "Duplex Spacing"
"Duplex Spacing"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:CRFRequency? on page 59
19Operating Manual 1173.0843.12 ─ 12
User InterfaceTETRA Release 2
BSCH / BNCH/T
3.3.2 Contents Settings
The "Contents Setting" section is enabled in downlink direction only.
Settings:
System Code.................................................................................................................20
TS reserved frames.......................................................................................................20
Frame 18 extension...................................................................................................... 20
Sharing Mode................................................................................................................20
U-plane DTX................................................................................................................. 21
D-NWRK-BROADCAST broadcast............................................................................... 21
D-NWRK-BROADCAST enquiry................................................................................... 21
Cell service level........................................................................................................... 21
MS_TXPWR_MAX_CELL............................................................................................. 21
Tx_on............................................................................................................................ 21
T1_T4_Burst_Type....................................................................................................... 22
Error Correction.............................................................................................................22
Late Entry......................................................................................................................22
ACCESS_PARAMETER............................................................................................... 22
Tx_burst_type............................................................................................................... 22
Loop Back..................................................................................................................... 22
System Code
Indicates whether the system is a TETRA V+D system or whether it is a "Direct Mode"
transmission.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:SCODe on page 64
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 indicates
which frames are reserved in this mode of operation. For the other values of sharing
mode, the contents of the TS reserved frames field are ignored.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:TRFRames on page 65
Frame 18 extension
Enables 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 can receive consecutive slots are able to perform this function.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:FEEXtension on page 61
Sharing Mode
The sharing mode field indicates whether the BS is using continuous transmission, carrier sharing, MCCH sharing or traffic carrier sharing.
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User InterfaceTETRA Release 2
BSCH / BNCH/T
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:SMODe on page 64
U-plane DTX
The "U-plane DTX" element indicates whether the BS supports discontinuous traffic
transmission by the MS.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:UPDTx on page 66
D-NWRK-BROADCAST broadcast
Enables the support of the D-NWRK-BROADCAST PDU.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:DNBBroadcast on page 60
D-NWRK-BROADCAST enquiry
Enables the support of the D-NWRK-BROADCAST inquiry.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:DNBenquiry on page 60
Cell service level
Sets the cell service level information element, i.e. define the level of service an MS
can receive in a cell. It can 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 59
MS_TXPWR_MAX_CELL
Sets the protocol information on the maximum transmission power for the mobile station. Allowed are values from 15 dBm to 45 dBm in 5 dB steps.
The MS_TXPWR_MAX_CELL parameter is used for cell selection and reselection, and
for power adjustments.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MTMCell on page 63
Tx_on
Determines the value of the Tx_on parameter, i.e. selects the test mode the MS operates in, "Reception ON" or "Transmission ON".
This parameter is necessary for the generation of test signal T1 or T4 transmitted by
the test system.
"Transmission
ON"
The mobile station is requested to transmit.
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User InterfaceTETRA Release 2
BSCH / BNCH/T
"Reception
ON"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:TXON on page 65
T1_T4_Burst_Type
Sets the value of the special parameter T1_T4_Burst_Type, i.e. determines the logical
channel the BS is expecting to receive.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:TTBType on page 65
Error Correction
Enables error correction.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:ECORrection on page 61
Late Entry
Sets the value of the late entry supported information element, used to indicate to the
MS whether late entry can be supported by the cell.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:LENTry on page 62
The mobile station is requested to receipt.
ACCESS_PARAMETER
Sets the value of the ACCESS_PARAMETER information field. This parameter is used
for subsequent power adjustments for the mobile station.
This protocol information field can have values from -53 dBm to -23 dBm in 2 dB steps.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:APARameter on page 58
Tx_burst_type
Sets the parameter Tx_burst_type and determines whether the MS under test transmit
either a normal uplink burst or control uplink burst.
"Normal uplink
burst"
"Control uplink
burst"
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:TBTYpe on page 64
Loop Back
Enables the loop back for test purposes.
If enabled, the mobile station sets up a loop and returns the data when requested by
the Tx_burst_type.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:LBACk on page 61
The mobile station transmits using normal uplink burst.
The mobile station transmits using control uplink burst.
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BSCH / BNCH/T
3.3.3 Scrambling
The "Srcambling" section contains of the parameters necessary to configure the
scrambling sequence.
The scrambling code is a 24-bit field composed of the "Mobile Country Code" (MCC)
and "Mobile Network Code" (MNC) and is calculated as defined in EN 300 392. The
MCC and MNC is a part of the MLE information contained within the SYNC PDU
broadcast by the BS on the BSCH. The upper MAC adds a 6-bit color code which is
contained in the SYNC PDU. The combination of MCC, MNC and color code make up
the scrambling code which the upper MAC passes to the lower MAC via the TMV-SAP.
This scrambling code corresponds to the extended color code used for scrambling and
descrambling in the lower MAC. The scrambling code corresponds to the 30-bit extended color code e(1), e(2),..., e(30).
Table 3-2: Building of scrambling code
"Mobile Country Code (MCC)" "Mobile Network Code (MNC)" "Colour Code"
10 bits 14 bits 6 bits
e(1) - e(10) e(11) - e(24) e(25) - e(30)
e(1) = msb1) of MCC
1)
Most Significant Bit
e(11) = msb of MNC e(25) = msb of colour code
Settings:
Base Colour Code.........................................................................................................23
Mobile Network Code....................................................................................................23
Mobile Country Code.................................................................................................... 23
Base Colour Code
Sets the colour code.
The base color code is the number of subscriber groups in a network.
See Table 3-2 for information on how the scrambling code is calculated.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:BCCode on page 58
Mobile Network Code
Sets the mobile network code (MNC).
The MNC is the number of the TETRA network operator.
See Table 3-2 for information on how the scrambling code is calculated.
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MNCode on page 63
Mobile Country Code
Sets the mobile country code.
The MCC is the number of the country in which the unit is operated.
See Table 3-2 for information on how the scrambling code is calculated.
23Operating Manual 1173.0843.12 ─ 12
Remote command:
[:SOURce<hw>]:BB:TETRa:BBNCht:MCCode on page 62
User InterfaceTETRA Release 2
Burst Editor
3.4 Burst Editor
Access:
► Select a slot from the graphical display in the TETRA main dialog.
At the top of the dialog, the structure of the current burst type for the selected slot is
displayed. Individual fields of the frame are color-coded:
Field Color
Data, Fixed, Mixed, Stealing white
White Training Sequences: TSC, ETSC,
SYNC
Tail, extended Tail green
Guard, extended Guard blue
normal burst: control burst:
yellow
The rest of the dialog displays the data contained in fields predefined by the standard
for the current burst type. Data fields with variable content can be edited.
The following sections list all possible settings and displays for the various burst types.
If a setting applies only to a particular burst type, it is mentioned for the corresponding
parameter.
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Burst Editor
Settings:
T2 Burst Type................................................................................................................25
(Sub-) Slot Level........................................................................................................... 25
(Sub-) Slot Attenuation..................................................................................................25
Use Coded T1/T4 Data................................................................................................. 25
Data Source.................................................................................................................. 26
Logical Channel Type................................................................................................... 26
Scrambling.................................................................................................................... 27
Training Sequence........................................................................................................ 27
TSC User Defined......................................................................................................... 27
AACH-Q Mode.............................................................................................................. 27
Access-Assign PDU...................................................................................................... 27
T2 Burst Type
Selects the burst type for "Test Mode T2".
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:SLOT<st>:LDIRection<ch>:
TBTYpe on page 50
(Sub-) Slot Level
Sets the level for the selected (sub-)slot.
Subslots are used by control bursts only.
"Off"
"Full"
"Attenuated"
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SLEVel on page 56 for "Slot Level"
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SSLevel on page 56 for "Sub-Slot Level".
(Sub-) Slot Attenuation
Selects the level attenuation for the "(Sub-)Slot Level" attenuated setting.
Subslots are used by control bursts only.
Use the Power Ramp Control dialog to define four different values for level attenuation.
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:BSATtenuation on page 52 for "Slot-Attenuation".
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SSATtenuation on page 52 for "Sub-Slot Attenuation".
Attenuation is maximum. The (sub-) slot is inactive.
The level corresponds to the level indicated in the display.
Level is reduced by the level attenuation set in "(Sub-)Slot Attenuation".
Use Coded T1/T4 Data
Enables/disables auto coding of the data.
If enabled, the selection of the data source is disabled.
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Burst Editor
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:SLOT<st>:UBBNch on page 50
Data Source
Selects a data source for the "Data" field.
The data source for both channels can be defined separately, i.e. each (sub-)slot has
its own data source.
If a burst contains multiple "Data" fields, they are treated as a continuous field. For
instance, a pseudo-random sequence is continued without interruption from one "Data"
field to the next.
The following standard data sources are available:
●
"All 0, All 1"
An internally generated sequence containing 0 data or 1 data.
●
"PNxx"
An internally generated pseudo-random noise sequence.
●
"Pattern"
An internally generated sequence according to a bit pattern.
Use the "Pattern" box to define the bit pattern.
●
"Data List/Select DList"
A binary data from a data list, internally or externally generated.
Select "Select DList" to access the standard "Select List" dialog.
– Select the "Select Data List > navigate to the list file *.dm_iqd > Select" to
select an existing data list.
– Use the "New" and "Edit" functions to create internally new data list or to edit
an existing one.
– Use the standard "File Manager" function to transfer external data lists to the
instrument.
See also "Main Dialog > Data List Management".
Remote command:
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA on page 53
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SDATa on page 55
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA:DSELection on page 54
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SDATa:SDSelection on page 56
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:DATA:DPATtern on page 53
[:SOURce<hw>]:BB:TETRa:SCONfiguration:TMODe<di>:SLOT<st>:
LDIRection<ch>:SDATa:SDPattern on page 55
Logical Channel Type
Selects the logical channel type.
The available channels depend on the selected "Test Mode" and "Link Direction".
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