Controls: Options >> Voltmeter >> Pos/Neg
Macros: VoltMode=Pos, VoltMode=Neg
These modes report the separate Positive and Negative waveform
peaks that are also used in Peak-Peak mode. Unlike Peak-Peak,
however, these values are affected by the Zero option.
If you use that to remove a DC offset ( ZeroPk is best for
this) then the Voltmeter shows the peak values of the AC
portion only.
See also Voltmeter, Voltmeter Channel