IVISCOPE_VAL_ENVELOPE
Sets the oscilloscope to the envelope acquisition mode. The oscilloscope acquires multiple waveforms and keeps the minimum and maximum voltages it acquires for each point in the waveform record. You specify the number of waveforms the oscilloscope acquires with the IVISCOPE_ATTR_NUM_ENVELOPES attribute. The oscilloscope can use real-time or equivalent-time sampling.
Defined Value: 3