Chapter 7 SCPI
The Measurement subsystems
WCDMA Options Version 6.20
243
:MEASure:BLOCkdata:PHASeerror
First, a continuous measurement of the mobile’s phase error will be started.
The corresponding result string (to be read out either with the query form of the
command or with
:FETCh:BLOCkdata:PHASeerror will contain
711 floating point numbers, representing the measurement result values. The
single measurement result values are separated by commas.
The meaning of the single values within the result string is as follows:
– The first two values are necessary for the scaling of the data. All remaining
709 values represent the measurement results.
– The first value (index = 0) gives the offset of the middle of the burst (bit 73)
in respect to the measurement result array.
Example An offset of
353.0 means that the middle of the burst will be the
355
th
value within the array (or the value contained at index 354).
– The second value (index = 1) is always set to
0.0.
– All following values (indices 2 to 710) give the phase error of the related
positions.
The time resolution is approx. 0.25 bit period (i.e. four measurement results per
bit period).
:MEAS:BLOC:MSP[:CURRent] This command starts a continuous measurement of the modulation spectrum of
the mobile’s burst.
The corresponding result string (to be read out either with the query form of the
command or with
FETCh:BLOCkdata:MSPectrum will contain floating point
real numbers, representing the measurement result values. The single measure-
ment result values are separated by commas.
The number of the measurement result values returned is dependent on the span
and resolution, set with the commands
:RFSPectrum:MSPectrum:SPAN and
:RFSPectrum:MSPectrum:RESolution.
:MEASure:BLOCkdata:MSPectrum:AVG
This command starts the measurement of the modulation spectrum of the
mobile’s burst for a user-definable number of times and averages the measure-
ment results.
The corresponding result string (to be read out either with the query form of the
command or with
FETCh:BLOCkdata:MSPectrum will contain floating point
real numbers, representing the measurement result values. The single measure-
ment result values are separated by commas.
The number of the measurement result values returned is dependent on the span
and resolution, set with the commands
:RFSPectrum:MSPectrum:SPAN and
:RFSPectrum:MSPectrum:RESolution.
:MEASure:BLOCkdata:AFSPectrum
This command starts a continuous measurement of the audio spectrum.
The corresponding result string (to be read out either with the query form of the
command or with
FETCh:BLOCkdata:AFSPectrum will contain floating
point real numbers, representing the measurement result values. The single
measurement result values are separated by commas. The number of the
measurement result values returned is dependent on the span and resolution.
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