Rohde & Schwarz CMU-K20, Operating Manual

Page: 490 / 646

Connection Control (Signalling only) CMU-K20/21/22/23/24
1115.6088.12 6.186 E-12
Subsystem BSSignal (Signal of Base Station/CMU)
The subsystem
BSSignal
configures the operating mode and the RF control and traffic channels that
the CMU transmits to communicate with the MS under test. It corresponds to the tab
BS Signal
in the
popup menu
Connect. Control
.
CONFigure:BSSignal:FM:DEViation < FrequencyOffset >
Frequency Offset
PROCedure:BSSignal:FM:DEViation < FrequencyOffset >
<FrequencyOffset>
Description of parameters Def. value Def. unit FW vers.
–100 kHz to +100 kHz
Frequency offset 0.0 Hz V1.15
Description of command Sig. State
This command determines a frequency offset for the CMU signals (CCH and TCH). The
PROCedure... command is available for firmware versions
≥
V3.10. See note on
Current vs. default
values
on p. 6.174 .
all
PROCedure:BSSignal:FM:DEViation:RANDom:ENABle < Enable >
Random Frequency Offset
<Enable>
Description of parameters Def. value Def. unit FW vers.
ON | OFF
Enable or disable random freq. offset OFF – V3.40
Description of command Sig. State
This command switches the random frequency on or off. The ON setting causes the (static) frequency
offset set via
CONFigure:BSSignal:FM:DEViation
to randomly change its sign after each frame.
The random frequency offset is automatically switched off each time that the connection is released.
CEST,
TEST
CONFigure:BSSignal:CCH[:TX]:MODE <Mode>
BCCH – Mode
<CCHChannel>
Description of parameters Def. value Def. unit FW vers.
BATC
BOTC
BCCH and TCH
BCCH or TCH BATC – V3.05
Description of command Sig. State
This command determines the BS signal configuration in the CEST state. In the BOTH setting the
BCCH is switched off as soon as CEST is reached so that all 8 timeslots are available for the traffic
channel (see command
CONFigure:BSSignal[:CSWitched][:TCH][:SSLot]:TIMeslot
on p. 6.188 ).
≠
CEST,
Q: all
CONFigure:BSSignal:CCH[:TX]:CHANnel <CCHChannel>
BCCH – RF Channel
<CCHChannel>
Description of parameters Def. value Def. unit FW vers.
259 to 293 | 306 to 340
128 to 251
0 to 124 | 955 to 1023
512 to 885
512 to 810
Number of control channel, GSM400
Number of control channel, GSM850
Number of control channel, GSM900
Number of control channel, GSM1800
Number of control channel, GSM1900 270
162
32
735
600 –
–
–
–
– V1.15
Description of command Sig. State
This command determines the control channel for the CMU signals (BCCH). SON,
SOFF
深圳德标仪器
135-1095-0799