Rohde & Schwarz CMU-K20, Operating Manual

Page: 307 / 646

CMU-K20/K21/K22/K23/K24
Connection Control (Non Signalling only)
1115.6088.12 6.3 E-12
[SENSe:]RFANalyzer:CHANnel <Number> RF Channel
<Number> Description of parameters Def. value Def. unit FW vers.
0.2 MHz to 2700 MHz
(see also data sheet)
Input frequency 455 (GSM400)
837 (GSM850)
903 (GSM900)
1750 (GSM1800)
1880 (GSM1900) MHz
MHz
MHz
MHz
MHz V2.00
Description of command
This command defines the frequency of the RF signal analyzed. As an alternative to frequencies, the corre-
sponding GSM channels (with the character string CH annexed to the channel number) can be entered (259CH
to 293 CH and 306 to 340 for GSM400, 128CH to 251CH for GSM850, 0CH to 124CH or 955CH to 1023CH for
GSM900, 512CH to 885CH for GSM1800, 512CH to 810CH for GSM1900, see GSM channel tables in chapter
4). The assignment of channel numbers and frequencies meets the GSM specification for the uplink (signal direc-
tion from mobile to CMU). The query always returns frequencies.
[SENSe:]RFANalyzer:FREQuency:OFFSet <FreqOffset> Frequency Offset
<FreqOffset> Description of parameters Def. value Def. unit FW vers.
–100 kHz to +100 kHz Offset for channel frequency 0 kHz V1.20
Description of command
This command defines an offset for the channel frequency set with the command
[SENSe:]RFANalyzer:CHANnel <Number>
. The offset frequency must be in multiples of 1 Hz.
[SENSe:]RFANalyzer:TSEQuence <TrainingSequence> Training Sequence
<TrainingSequence> Description of parameters Def. value Def. unit FW vers.
OFF |
GSM0 to GSM7 |
DUMMy |
ANY No training sequence detected
GSM-specific training sequence
GSM dummy burst
Arbitrary training sequence allowed OFF – V1.15
Description of command
This command determines the training sequence of the signal analyzed. If no training sequence is specified
(OFF), the CMU measures all signals. In the setting ANY, it uses any training sequence for synchronization.
CONFigure:RFANalyzer:TPCL <PCL> TPCL
<PCL> Description of parameters Def. value Def. unit FW vers.
0 to 31 Template PCL 15 – V2.10
Description of command
This command defines the template PCL which is used for dynamic limit line correction in the
POWer
measure-
ment.
[SENSe:]RFANalyzer:MODulation <Mod_Scheme> Modulation
<Mod_Scheme> Description of parameters Def. value Def. unit FW vers.
GMSK | EPSK Modulation scheme GMSK or EPSK GMSK – V2.15
Description of command
This command selects one of the supported modulation schemes.
深圳德标仪器
135-1095-0799