Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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Signalling: Receiver Quality CMU-K20/21/22/23/24
1115.6088.12 6.156 E-12
CONFigure:RXQuality:BER<nr>:CONTrol:REPetition Test Cycles
< StopCondition> ,<Stepmode>
<StopCondition> Description of parameters Def. value Def. unit
ALIMits |
FLIMit |
CLEVel |
NONE Measurement aborted when all limits are exceeded
Aborted when first limit value is exceeded
Statistical BER test switched on
Not aborted, measurement over all frames See
below –
<Stepmode> Description of parameters Def. value Def. unit FW vers.
STEP |
NONE Interrupt measurement after each statistics cycle
Continue measurement according to its rep. mode NONE – V2.00
Description of command
This command determines the stop condition and the stepping mode for the measurement. The repetition mode
of the measurement (single shot) is identified by the
BER
keyword.
Depending on the test setup, the following default settings are valid:
<nr> 1 2 3 4 5 6 7 8 9 10
StopCond FLIM FLIM FLIM FLIM FLIM FLIM FLIM FLIM FLIM FLIM
CONFigure:RXQuality:BER<nr>:CONTrol[:CSWitched][:TCH]:LEVel:UTIMeslot <Level>
TCH Level BER, Used Timeslot
<Level> Description of parameters Def. value Def. unit FW vers.
–
137 dBm to –27 dBm
–137 dBm to –10 dBm
–90 dBm to +13 dBm
RF1 level in used timeslot
RF2 level in used timeslot
RF3 OUT level in used timeslot See
below dBm
dBm
dBm V2.00
Description of command
This command defines the absolute level of the traffic channel ( TCH ) in the used timeslot for the single shot
application <nr>. This level applies to the receiver quality measurement only.
The default setting depends on the test setup (all level values in dBm, corresponding to RF2):
<nr> 1 2 3 4 5 6 7 8 9 10
Level –102.0 –104.0 –102.0 –104.0 –100.0 –100.0 –100.0 –102.0 –102.0 –102.0
CONFigure:RXQuality:BER<nr>:CONTrol[:CSWitched][:TCH]:LEVel:UNTimeslot <Level>
TCH Level BER, Unused Timeslot
<Level>
Description of parameters Def. value Def. unit FW vers.
–127 dB to +127 dB Level in unused timeslot See below dB V2.00
Description of command
This command defines the relative level of the traffic channel ( TCH ) in the unused timeslot for the single shot
application <nr>. This level applies to the receiver quality measurement only. The level range quoted above is
restricted by the condition that the absolute level (calculated from the used timeslot level and the relative level in
the unused timeslots) must not exceed the level ranges of the RF connectors.
Example: With output connector RF2 and a default used timeslot level of –102 dBm, the unused timeslot level
can be set in the range –35 dB to +92 dB, corresponding to an absolute level of –137 dBm to –10 dBm.
The default setting depends on the test setup (all level values in dB):
<nr> 1 2 3 4 5 6 7 8 9 10
Level –18.0 –16.0 –18.0 –16.0 –20.0 –20.0 –20.0 –18.0 –18.0 –18.0
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