Rohde & Schwarz CMU-K20, Operating Manual

Page: 219 / 646

CMU-K20/K21/K22/K23/K24
Signalling: Receiver Quality Measurements
1115.6088.12 4.141 E-12
Meas. Mode
The
Meas. Mode
parameter hotkey selects the quantities to be measured. For a list
of measurement modes and corresponding measurement results see also section
Measurement Results
on page 4.132 ff.
BER
Bit error rate (separately for class II and class Ib bits)
RBER / FER
Residual bit error rate (separately for class II and class Ib bits)
and frame erasure rate
Burst by Burst
Accelerated measurement, only class II bits are transmitted
BER / DBLER
Bit error rate and data block error rate; see section
BER Tests of
PDTCHs
on p. 4.120 ff. For packet switched data channels
(GPRS or EGPRS, with option CMU-K42 or CMU-K43), the USF
BLER is available in addition.
All measured quantities are defined at the beginning of section
Receiver Quality
Measurements
on page 4.118 ff.
Remote control
CONFigure:RXQuality:BER<nr>:CONTrol:<Main_Service>
RFER | BER | BBB | BDBL,<FramesToSend>
CONFigure:RXQuality:BAVerage:CONTrol:<Main_Service>
RFER | BER | BBB | BDBL,<FramesToSend>
Where
<Main_Service> = [CSWitched] | PDATa
Average
The parameter
Average
defines the number of frames to be averaged in a
BER
Average
measurement. The meaning of a frame and its bit content depends on the
service, the frame type and the channel coding; see section
Frame Structure for
Speech and Data Channels
on p. 4.123 ff.
Remote control
CONFigure:RXQuality:BAVerage:CONTrol
<Mode>,<FramesToAverage>
The following statistical settings are relevant for
BLER
measurements only:
Repetition
Selects the repetition mode for the
BLER
measurement (single shot or continuous
BLER measurement).
Remote control
CONFigure:RXQuality:BLER:CONTrol:REPetition SING | CONT
RLC Block
Count
The
RLC Block Count
hotkey sets the number of RLC blocks to be sent and
evaluated per single-shot BLER measurement. The hotkey is available in the
BLER
application and if the
Repetition
mode is set to
Single Shot.
An RLC block is transmitted every 20 ms in each used DL timeslot so that the total
measurement time amount to:
Meas. Time = 20 ms x <RLC Block Count> / <Number of used DL slots>
The bit content of a frame and its depends on the service, the frame type and the
channel coding; see section
Frame Structure for Speech and Data Channels
on p.
4.123 ff.
Remote control
CONFigure:RXQuality:BLER:CONTrol:RLBCount
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