Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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CMU-K20/21/22/23/24 Connection Control (Signalling only)
1115.6088.12 6.177 E-12
TRIGger[:SEQuence]:DEFault <Enable>
Trigger Default Settings
<Enable>
Description of parameters Def. value Def. unit FW vers.
ON |
OFF
All parameters are set to their default values
All or some parameters differ from the default values ON
– V2.00
Description of command
If used as a setting command with the parameter
ON
this command sets all parameters of the subsystem to their
default values (the setting
OFF
causes an error message).
If used as a query the command returns whether all parameters are set to their default values
(ON)
or not
(OFF)
.
Subsystem SIGNalling (Connection Setup and Cleardown)
The subsystem
SIGNalling
controls the connection setup and cleardown from the CMU to the mobile
and determines the signalling parameters. Together with the subsystem
WPOWer
it corresponds to the
different
Signalling
tabs (for different signalling states, see command
PROCedure:SIGNalling[:CSWitched]:ACTion
) in the popup menu
Connect. Control
.
PROCedure:SIGNalling[:CSWitched]:ACTion <Action>
Signalling Control
<Action>
Description of parameters Def. value Def. unit FW vers.
SOFF |
SON |
MTC |
SMS |
CRELease |
HANDover
Switch off BCCH signal
(signal off)
Switch on BCCH signal
(signal on)
Mobile terminating call
Short message service
Call release
Dual-band handover (to target network defined via
CONFigure:HANDover:TARGet
)
– – V1.15
Description of command Sig. State
This command has no query form. It changes between the different signalling states of the CMU. The
current state can be queried via
SIGN:STAT?
See
below
Important Note: Signalling States and Local to Remote Switchover
The default signalling state of the CMU in remote control is SOFF (see Fig. 6-1 below ). This
state is automatically reached on switchover from manual to remote control; an existing
connection to the MS under test is dropped.
To suspend this default behavior of the CMU, the base system command
SYSTem:GTRM:COMP
has been introduced.
SYSTem:GTRM:COMP OFF
prevents the instrument from changing the
signalling state local to remote switchover. In particular, an existing connection is maintained.
The default behavior of the CMU is restored each time the instrument is rebooted. For more
information see the documentation of the base system commands in the CMU manual.
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