WILLTEK 4403 - Page 366

Appendix A SCPI Command Reference
MEASure subsystem
344 WCDMA Options Version 6.20
:MEASure:WCDMa[:CONTinuous]:RFSPectrum:SEM[:DATa]
:MEASure:WCDMa[:CONTinuous]:RFSPectrum:SEM:AVG
:MEASure:WCDMa[:CONTinuous]:RFRX:STOP
Description
This command starts the adjacent channel leakage power ratio measurement. To read
out the latest measurement result use the FETC:WCDM:RFSP:ACLR? command.
Query
The query form of this command starts the measurement and delivers a string, con-
taining 5 measurement result values separated by commas (12 offsets in both direc-
tions from the carrier, plus the result at the carrier itself). These measurement result
values are floating point real numbers with the physical dimension dBc (dB relative to
the carrier, being the transmission frequency of the mobile).
Example
:MEAS:WCDM:RFSP:ACLR?
Syntax
:MEASure:WCDMa[:CONTinuous]:RFSPectrum:SEM[:DATa]
Parameters
There are no parameters.
Description
Starts a continuous measurement of the Spectrum Emission Mask. To read out the
latest measurement result use the FETC:WCDM:RFSP:SEM[:DATA] command.
Query
This query command will start the measurement and return a result value as soon as
the first measurement has been completed. The result delivered back will contain an
array of 501 floating point numbers.
Example
:MEAS:WCDM:RFSP:SEM?
Syntax
:MEASure:WCDMa[:CONTinuous]:RFSPectrum:SEM:AVG <Int1>
Parameters
There are no parameters.
Description
Starts a continuous measurement of the RF modulation spectrum averaged over
<Int1> measurements. To read out the latest measurement result use the
FETC:WCDM:RFSP:SEM:AVG command.
Query
This query command will start the measurement and return a result value as soon as
<Int1> measurements have been completed. The result delivered back will contain
an array of 501 floating point numbers.
Example
:MEAS:WCDM:RFSP:SEM:AVG 10?
Syntax
:MEASure:WCDMa[:CONTinuous]:RFRX:STOP
Parameters
There are no parameters.
Description
Stops a continuous measurement of the WCDMA RF RX tests.
Note: Stopping the test is not required since a test is automatically stopped when
you start a new test.
Query
The query form of this command is not available.
Example
:MEAS:WCDMa:RFRX:FREQ
:MEAS:WCDMa:RFRX:STOP
Configures, starts and stops a measurement.