The shape of the waveform is described by the following equation:
parameters default values units vo (offset) volts or amps va (amplitude) volts or amps fc (carrier frequency) 1/tstop Hz mdi (modulation index) 0 fs (signal frequency) 1/tstop Hz
value = vo + va . sin((2. fc . time) + mdi . sin(2
. fs . time))
This function applies only to transient analysis, where time is the running variable. When referring to default values, tstep is the printing increment and tstop is the final time in transient analysis, see 2.7.9 for explanation.