Appendix A SCPI Command Reference
CALCulate Subsystem
432 WCDMA Options Version 6.20
:CALCulate:WCDMa:RFSPectrum:SEM:LIMit:UPPer
:ABSolute
:CALCulate:WCDMa:RFSPectrum:SEM:VALue
Example
:CALC:WCDM:RFSP:SEM:LIM:UPP -49,-49,-39,-35,-50,-35,
-35,-50,-35,-39,-49,-49
:CALC:WCDM:RFSP:SEM:LIM:UPP?
Returns -49,-49,-39,-35,-50,-35,-35,-50,-35,-39,-49,-49.
Syntax
:CALCulate:WCDMa:RFSPectrum:SEM:LIMit:UPPer:ABSolute
<Real1>,<Real2>,<Real3>
Parameters
Realx are floating point real numbers. The minimum value for the parameters is
-120, the maximum is 0, the resolution is 1, the default value is for Real1
-55.843, for Real2 -71.072, for Real3 -55.843.
Description
This command sets the minimum values for the upper limits for the spectrum emis-
sion mask measurement. Real1 represents the minimum limit due to center channel
power for the left part of the spectrum emission mask (-12 MHz to +4 MHz) in dB.
Real2 represents the minimum limit due to center channel power for the middle
part of the spectrum emission mask (-3.845 MHz to +3.845 MHz) in dB. Real3 rep-
resents the minimum limit due to center channel power for the right part of the spec-
trum emission mask (+4 MHz to +12 MHz) in dB.
Query
There is a query form which returns the stored settings.
Example
:CALC:WCDM:RFSP:SEM:LIM:UPP:ABS -55,-77,-55
:CALC:WCDM:RFSP:SEM:LIM:UPP:ABS?
Returns -55,-77,-55.
Syntax
:CALCulate:WCDMa:RFSPectrum:SEM:VALue <real1>
Parameters
real1 is a floating point real number. The minimum value is -12,000,000.0,
the maximum is 12,000,000.0
. The minimum resolution possible is 0.1.
Description
There is only a query form of this command available.
Query
The query form of this command delivers an (interpolated) measurement result value
of the modulation spectrum curve at the frequency specified with the real1 parame-
ter. real1 is interpreted as an offset from the carrier (i.e. the transmission frequency).
The string returned will contain one floating point real number. The physical dimen-
sion of the measurement result value returned is dBc.
Notes
– Please note that you need to have a spectrum measurement taken before this
command will return any meaningful result. We recommend to use the
:MEAS:WCDM:RFSP:SEM:AVG command to do so.
–The :CALC:WCDM:RFSP:SEM:VAL command is not really a measurement - it
is an interpolation of the spectrum curve for the frequency specified.
Example
:MEAS:WCDM:RFSP:SEM:AVG 20
:CALC:WCDM:RFSP:SEM:VAL? -50000
This command will interpolate a modulation spectrum measurement at an offset of
50 kHz to the carrier. The value returned in this example is:
"-4.7".
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