Select the shape of the modulating waveform. Used only when the Internal
modulation source is selected (PWM[1|2]:SOUR INT command). (The
carrier must be a pulse waveform for PWM.) The default is SIN. The :
PWM[1|2]:INT:FUNC? query returns “SIN”, “SQU”, “RAMP”,
“NRAM”, “TRI”,“NOIS” or “USER”.
Select “SQU” for a square waveform with a 50% duty cycle.
Select “RAMP” for a ramp waveform with 100% symmetry.
Select “TRI” for a ramp waveform with 50% symmetry.
Select “NRAM” (negative ramp) for a ramp waveform with 0%
symmetry.
If you select an arbitrary waveform as the modulating waveshape (“USER”),
the waveform is automatically limited to 16K (16384) points. Extra waveform
points are removed using decimation.
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