Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/21/22/23/24 Common: MODulation:PERRor
1115.6088.12 6.95 E-12
Measured Values – Subsystem MODulation[:PERRor]:EPSK
The subsystem MODulation[:PERRor]:EPSK measures and returns the modulation parameters and
compares them with the tolerance values. The subsystem corresponds to the various output elements
in the measurement menu
MODulation, application Phase Error 8PSK.
Scalar Results:
READ[:SCALar]:MODulation[:PERRor]:EPSK? Start single shot meas. and return results
FETCh[:SCALar]:MODulation[:PERRor]:EPSK? Read out meas. results (unsynchronized)
SAMPle[:SCALar]:MODulation[:PERRor]:EPSK? Read out measurement results (synchronized)
Returned values Value range Def. value Def. unit FW vers.
95thPercentilePhase Error
PhErrorPeak (x3),
PhErrorRMS (x3),
OriginOffset (x3),
FrequencyError (x3),
AvgBurstPowerCurr,
BurstsOutOfTol 0.0 % to 100.0 %
0.0 % to 100.0 %
0.0 % to 100.0 %
–100.0 dB to +100.0 dB
–1000.0 Hz to +1000.0 Hz
–137 dBm to +53 dBm
0.0 % to 100.0 % NAN
NAN
NAN
NAN
NAN
NAN
NAN
%
%
%
dB
Hz
dBm
% V2.15
Description of command
These commands are always queries. They start a modulation measurement and output all scalar measurement
results (see chapter 4), either for the whole burst or for the 1
st
ten valid symbols in the burst. The calculation of
results in an average or peak measurement is described in chapter 3 (see calculation of statistical quantities ).
The symbol (x3) behind a value indicates that the list contains three results corresponding to the Current , the
Average, and the MMax value.
CALCulate:MODulation[:PERRor]:EPSK:LIMit:MATChing? Bursts out of Tolerance
Returned values Value range Def. value Def. unit FW vers.
95thPercentilePhError
PhErrorPeak (x3),
PhErrorRMS (x3),
OriginOffset (x3),
FrequencyError(x3)
For all measured values:
NMAU | NMAL | INV | OK INV
INV
INV
INV
INV –
–
–
–
–
V2.15
Description of command
This command is always a query. It indicates whether and in which way the error limits for the scalar measured
values (see above command) have been exceeded. The symbol (x3) behind a value indicates that the list con-
tains three results corresponding to the
Current , the Average, and the MMax value. The limits are defined with
the
CONFigure:MODulation:OEMP
... commands.
The following messages may be output for all measured values:
NMAU Underflow of tolerance value
not matching, underflow
NMAL Tolerance value exceeded
not matching, overflow
INV Measurement invalid
invalid
OK all tolerances matched
深圳德标仪器
135-1095-0799