Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/21/22/23/24 Common: MODulation[:PERRor]
1115.6088.12 6.69 E-12
Measured Values – Subsystem MODulation[:PERRor][:GMSK]?
The subsystem MODulation[:PERRor][:GMSK] measures and returns the modulation results and
compares them with the tolerance values. The subsystem corresponds to the various output elements
in the graphical measurement menu
MODulation[:PERRor][:GMSK].
Scalar Results:
READ[:SCALar]:MODulation[:PERRor][:GMSK]? Start single shot meas. and return results
FETCh[:SCALar]:MODulation[:PERRor][:GMSK]? Read out meas. results (unsynchronized)
SAMPle[:SCALar]:MODulation[:PERRor][:GMSK]? Read out meas. results (synchronized)
Returned values Value range Def. value Def. unit FW vers.
PhErrPeakCurrent,
PhErrPeakAverage,
PhErrPeakMaxMin,
PhErrRMSCurrent,
PhErrRMSAverage,
PhErrRMSMaxMin,
FreqErrCurrent,
FreqErrAverage,
FreqErrMaxMin,
AvgBurstPowerCurr,
BurstsOutOfTol –100.0 ° to +100.0 °
–100.0 ° to +100.0 °
–100.0 ° to +100.0 °
–100.0 ° to +100.0 °
–100.0 ° to +100.0 °
–100.0 ° to +100.0 °
–1000.0 Hz to +1000.0 Hz
–1000.0 Hz to +1000.0 Hz
–1000.0 Hz to +1000.0 Hz
–137 dBm to +53 dBm
0.0 % to 100.0 % NAN
NAN
NAN
NAN
NAN
NAN
NAN
NAN
NAN
NAN
NAN
deg
deg
deg
deg
deg
deg
Hz
Hz
Hz
dBm
%
V1.15
Description of command
These commands are always queries. They start a measurement and return all scalar measurement results (see
chapter 5). These are:
Peak phase error of current burst phase error peak current
Peak phase error of average measurement phase error peak average
Peak phase error of peak measurement phase error peak max./min.
Rms phase error of current burst phase error RMS current
Rms phase error of average measurement phase error RMS average
Rms phase error of peak measurement phase error RMS max./min.
Frequency error of current burst frequency error current
Frequency error of average measurement frequency error average
Frequency error of peak measurement frequency error max./min.
Average burst power of current burst avg. burst power current
Relative portion of faulty bursts bursts out of tolerance
The calculation of results in an average or peak measurement is described in chapter 3 (cf. calculation of
statistical quantities ).
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