Rohde & Schwarz CMU-K20, Operating Manual

Page: 242 / 646

Signalling: Connection Control
CMU-K20/K21/K22/K23/K24
1115.6088.12 4.164 E-12
Remote control
No separate switchover command. The slot modes are selected implicitly by the
keywords
[:SSLot]
or
:MSLot
in the command header.
TCH
Level
The
TCH Level
softkey sets the absolute level (in dBm) in the used timeslot and the
relative level in all unused timeslots of the BS signal. The unused timeslot level is
defined relative to the level in the used timeslot (in dB).
The value range for both levels depends on the RF output selected and of the
external attenuation set, see section
Control of Input and Output Signals (Non
Signalling)
on page
4.69 .
Remote control
CONFigure:BSSignal[:CSWitched][:TCH]:LEVel:UTIMeslot
PROCedure:BSSignal[:CSWitched][:TCH]:LEVel:UTIMeslot
CONFigure:BSSignal[:CSWitched][:TCH]:LEVel:UNTimeslot
PROCedure:BSSignal[:CSWitched][:TCH]:LEVel:UNTimeslot
RF
Channel
The
RF Channel
softkey selects the GSM channel number of the traffic channel
allocated to the connection. For an overview of GSM channels see section
Control
of Input and Output Signals
on page
4.69
ff. In GSM900 the CMU can use all three
sub-bands (P-GSM, E-GSM, R-GSM), so care must be taken that the MS supports
the selected
RF Channel.
Remote control
CONFigure:BSSignal[:CSWitched][:TCH]:CHANnel <Channel>
Hopping
The
Hopping
softkey selects a frequency hopping sequence.
Off
Switch off frequency hopping
A, B, C, D
Selection of the hopping sequence referred to as A (or B or C or D)
Pressing the
Hopping
softkey twice opens the
Hopping Information
dialog:
This dialog displays the current hopping sequences A to D. The four sequences
can be selected in the
Data Set
list.
Note: The hopping sequence can be (re)defined in the table-oriented version
of the BS Signal tab while the CMU is in the signalling states Signal
Off, Signal On, or Synchronized. See section
Table-oriented Version
on p.
4.167
ff.
Remote control
PROCedure:SIGNalling[:CSWitched][:TCH][:SSLot]:
FHOPping:SEQuence
CONFigure:BSSignal[:CSWitched][:TCH][:SSLot]:FHOPping:A
CONFigure:BSSignal[:CSWitched][:TCH][:SSLot]:FHOPping:B
CONFigure:BSSignal[:CSWitched][:TCH][:SSLot]:FHOPping:C
CONFigure:BSSignal[:CSWitched][:TCH][:SSLot]:FHOPping:D
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