Retrieve magnitude of individual harmonic
(remote operation only)
The 2016 can return the levels of individual harmonics (relative to the level of the
fundamental, in dB). The parameters for this command are the starting and ending harmonics.
Specify 2,3 for the second and third harmonics, or 2,2 for the second harmonic. The harmonic
levels returned correspond to the last triggered reading, and the unit has to be set for one-shot
readings (:INIT:CONT OFF). For remote operation, send this command:
:SENSe:DISTortion:HARMonic:MAGNitude? xx,xx ;query individual harmonic levels
Retrieve RMS volts, THD+n, or THD for an acquired reading
(remote operation only)
Once a single reading has been triggered, the corresponding RMS volts value, THD+noise
value, or THD value can be read for the same set of data, regardless of what distortion mode is
set. SINAD can be calculated from the THD+noise reading. Note that the following commands
only work if the unit is set to trigger one reading at a time (:INIT:CONT OFF). Errors occur if
the unit is continuously updating.
:SENSe:DISTortion:RMS? ;return the calculated RMS volts value for the last
triggered reading
:SENSe:DISTortion:THD? ;return the THD+noise reading for the last triggered
reading
:SENSe:DISTortion:THDN? ;return the THD reading (number of harmonics depends
on the last setting of harmonic number)
Querying the RMS volts value in the distortion mode with :sens:dist:rms? may yield a reading
slightly different from a reading in AC volts mode. This is because of the differences in how the
two modes make the measurement.
2-38 Basic Measurements
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