WILLTEK 4403 - Page 347

Appendix A SCPI Command Reference
MEASure subsystem
WCDMA Options Version 6.20
325
:MEAS[:CONT]:AFAN:DISTortion
:MEASure[:CONT]:AFANalyser:SINad
:MEASure[:CONTinuous]:PSUPply:GROup
Syntax
:MEAS[:CONT]:AFAN:DISTortion
Parameters
There are no parameters.
Description
Starts a continuous measurement of the third-harmonic distortion of a sine wave
applied to the audio analyzer. To read out the latest measurement result, use the
:FETCh:AFAN:DIST command.
Note: Any AF test command needs the Audio Option to be installed on your Willtek
4400.
Query
The query form of this command starts the measurement and delivers a string, con-
taining a floating point real number, representing the first measurement result value.
The physical dimension is percent (%).
Example
:MEAS:CONT:AFAN:DISTortion?
String delivered back: "0.3".
Syntax
:MEASure[:CONT]:AFANalyser:SINad
Parameters
There are no parameters.
Description
Starts a continuous measurement of the SINAD (i.e. signal to noise ratio). To read out
the latest measurement result, use the :FETCh:AFAN:SIN command.
Note: Any AF test command needs the Audio Option to be installed on your Willtek
4400.
Query
The query form of this command starts the measurement and delivers a string, con-
taining one floating point real number, representing the first measurement result
value. The physical dimension is dB.
Example
:MEAS:CONT:AFANalyser:SINad?
Value delivered back: "50.5".
Syntax
:MEASure[:CONTinuous]:PSUPply:GROup
Parameters
There are no parameters.
Description
Starts a continuous measurement of the power supply tests specified with the
:CONF:MEAS:GRO:PSUP command. To read out the latest measurement
results, use the :FETCh:PSUP:GROup command.
Notes
– To perform any power and current consumption measurements on your Willtek
4400, the MS Power Supply and Current Measurements Option must be installed.
– For further details regarding group measurements, please refer to section
:MEASure:...:GROup.