Rohde & Schwarz CMU-K20, Operating Manual

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Options and Extensions CMU-K20/21/22/23/24
1115.6088.12 6.212 E-12
Options and Extensions
The features described in this section require the installation of additional software options; for a
complete list of deliverable options refer to the data sheet.
GPRS and EGPRS Signalling
(with Options R&S CMU-K42 and R&S CMU-K43)
The remote-control commands presented in this section control the setup and release of a TBF
connection, configure the MS and BS Signals and define the network parameters for packet data
services. They correspond to the settings in the
Connect. Control
popup menu that are related to
packet data services.
Note 1: Current vs. default values
Some parameters of the CMU can assume two independent values: The default value is used
to set up a connection; it can be modified in the signalling states
Signal Off
,
Idle
and
Attached.
The current value is valid during the connection (signalling state
TBF Established)
. Whenever
the CMU goes into the
TBF Established
state the default value overwrites the current value.
The current value during the connection can still be changed, however, modifying this current
value does not alter the default value. An example for such a double parameter in packet data
mode is the bit stream.
Default values are set with a
CONFigure ...
command, current values are set with the
corresponding
PROCedure ...
command.
Note 2: Receiver Quality measurements
Several additional commands have been introduced for Receiver Quality measurements on
packet-data (GPRS) channels. These commands contain the
PDATa
keyword but are described
in section
Receiver Quality f
or systematic reasons.
Signalling – Subsystem SIGNalling:PDATa
The subsystem
SIGNalling:PDATa
controls the connection between the CMU and the MS under test
and changes the test mode parameters while a GPRS TBF connection is established (current
parameters). In manual control, these functions are distributed over the different
Signalling
tabs (for
different signalling states, see command
PROCedure: SIGNalling:PDATa:ACTion
) and the
MS Signal, BS Signal
and
Network
tabs in the popup menu
Connect. Control
.
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