User manual

Chapter 2 Command System RIGOL
RSA3000 Programming Guide 2-75
:FETCh:HARMonics:FUNDamental?
Syntax
:FETCh:HARMonics:FUNDamental?
Description
Queries the frequency of the fundamental waveform.
Remarks
This command is only valid when the harmonic distortion measurement in GPSA mode is enabled.
This command has the same function as :FETCh:HARMonics:FREQuency? 1.
This command will select data from the latest measurement results, and then transmit the data to the
output buffer.
Return Format
The query returns the frequency of the fundamental waveform in scientific notation. The unit is Hz.
Example
The following query returns 4.550000000e+07.
:FETCh:HARMonics:FUNDamental?
:FETCh:OBWidth?
Syntax
:FETCh:OBWidth?
Description
Queries the results of the occupied bandwidth measurement.
Remarks
This command is only valid when the occupied bandwidth measurement in GPSA mode is enabled.
This command will select data from the latest measurement results, and then transmit the data to the
output buffer.
Return Format
The query returns the occupied bandwidth (Hz) and the transmit frequency error (Hz) in scientific notation.
They are separated by commas.
Example
The following query returns 1.860000000e+06,2.000000000e+04.
:FETCh:OBWidth?