Bandpass filter commands
[:SENSe[1]]:DISTortion:LCO <NRf> Sets the low cutoff frequency.
[:SENSe[1]]:DISTortion:HCO <NRf> Sets the high cutoff frequency.
Parameter <NRf> = Cutoff frequency (20 to 50000)
Query :LCO? Query the low cutoff frequency.
:HCO? Query the high cutoff frequency.
Description This command sets the bandpass filter's cutoff frequencies. The :LCO and
:HCO commands determine the range of frequencies to include in the
distortion measurement. The lower of the upper harmonic set for the
fundamental or the HCO frequency will be in effect. Both :LCO and :HCO
limits are 20Hz to 50kHz. Conflict checking is done only when both filter
settings are active. If both filter settings are active,
make sure to set the
:LCO <NRf> lower than the :HCO <NRf> or else a -221 Settings conflict
error will result.
:STATe <b>
[:SENSe[1]]:DISTortion:LCO:STATe <b> Sets LCO state on or off.
[:SENSe[1]]:DISTortion:HCO:STATe <b> Sets HCO state on or off.
Parameters <b>= 1 or ON Enable specified function.
0 or OFF Disables specified function.
Query STATe? Query the cutoff frequency state (on or off).
Description This command sets the state for the specified function (:LCO or :HCO) on or
off.
:FFTransform:BINS? <start#,end#>
[:SENSe[1]]:DISTortion:FFTransform:BINS? Query magnitude of theFFT bins.
Parameter <start #, end #>=1-1023 Specify start and end bin values.
Description This command queries the magnitude of the FFT bins. Start and end values are
required, even if querying a single bin (e.g., BINS? 2,2). Non-integer
values are truncated (not rounded). Make sure to set the start bin number
lower than the end bin number or a -221 Settings conflict error will result.
The following distortion command queries are for use in “one-shot” measurement mode (at
the event detection trigger model state or the idle state with a trigger count of one). Otherwise,
an “error -221, settings conflict” occurs and the command is ignored. The intent is to be able to
correlate all of these readings to one acquired set of data.
5-52 SCPI Command Reference
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