Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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CMU-K20/K21/K22/K23/K24
Signalling: Receiver Quality Measurements
1115.6088.12 4.131 E-12
Remote control
No explicit switchover command. All single shot measurements are identified by the
2
nd
/3
rd
level keywords
...RXQuality:BLER...
BS
Signal
The
BS Signal
softkey determines the level and the data transmitted on the CMU's
traffic channel. The following settings are specific to the
Receiver Quality
measurement:
TCH Level
BER
The
TCH Level BER
hotkey sets the level of the CMU's traffic channel signal (for
applications
BER
and
BER Average
). The settings remain valid while
BER
or
BER
Average
is active, see section
Measurement Control (Receiver Quality
Configuration – Control)
on page 4.138 . They hold for both single slot and multislot
mode of the MS under test.
The level in the used timeslot
(used TS)
and the unused timeslots
(unused TS)
can
be defined separately. The unused TS level is expressed in units relative to the
level in the used timeslot. Note that the receiver quality specifications defined in
GSM 05.05 must be met when the two timeslots adjacent to the used timeslot are
detecting GSM signals at 20 dB above the used timeslot level. This is why the
default value for the unused TS level is higher than the default used TS level.
Remote control
CONFigure:RXQuality:BER<nr>|BAVerage:CONTrol[:CSWitched]
[:TCH]:LEVel:UTIMeslot
CONFigure:RXQuality:BER<nr>|BAVerage:CONTrol[:CSWitched]
[:TCH]:LEVel:UNTimeslot
TCH Level
BLER
The
TCH Level BLER
hotkey sets the level of the CMU's traffic channel signal (for
application
BLER
) in all timeslots. The levels are defined relative to a reference
level. The settings remain valid for the duration of the
BLER
measurement only,
see section
Measurement Control (Receiver Quality Configuration – Control)
on
page 4.138 . They hold for both single slot and multislot mode of the MS under test.
Remote control
CONFigure:RXQuality:BLER:CONTrol:PDATa[:TCH]:MSLot:RLEVel
CONFigure:RXQuality:BLER:CONTrol:PDATa[:TCH]:MSLot:LEVel:INDi
vidual
Network
The
Network
softkey defines network parameters that the CMU reports to the
mobile station; see also section
Network Parameters (Connection Control –
Network)
on page 4.169 . The following settings are specific to the
Receiver Quality
measurement and not provided in the
Connection Control
menu:
Bit Stream
BER
The
Bit Stream BER
hotkey selects the data to be transmitted on the traffic
channel. All pseudo random bit sequences (PRBS) provided in the
Network
tab are
available (see section
Network Parameters (Connection Control – Network)
on p.
4.169 ff.); however, the
Bit Stream BER
is only valid while a
Receiver Quality
measurement is active.
Remote control
CONFigure:RXQuality[:CSWitched]:BITStream
CONFigure:RXQuality:PDATa:BITStream
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