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8.3.1.5 Single-Frequency FM

General Form:

          SFFM(VO VA FC MDI FS)

Examples:

          V1 12 0 SFFM(0 1M 20K 5 1K)
     parameter                 default value   units
     ------------------------------------------------------
     VO  (offset)                              Volts or Amps
     VA  (amplitude)                           Volts or Amps
     FC  (carrier frequency)   1/TSTOP         Hz
     MDI (modulation index)
     FS  (signal frequency)    1/TSTOP         Hz

The shape of the waveform is described by the following equation:

                       |                            |
       V(t)=V  + V  sin 2 J FC t + MDI sin(2 J FS t)
             O    A    |                            |