RIGOL DG4000 Series - Manual (Page 119)

Chapter 5 Modulated Waveform Output RIGOL
DG4000 Series User’s Guide 5-19
To Set PSK Phase
PSK phase is the modulating phase. Press Phase to set the modulating phase.
 Use the numeric keyboard or direction keys and knob to input the desired
phase value.
 The phase range is from 0º to 360º and the default is 180º.
To Set Modulating Polarity
Press Polarity to select the “Pos” or “Neg” polarity of the modulating waveform to
control the output phase.
In internal modulation, set the polarity to “Pos” and the generator would output
the carrier phase when the modulating waveform is logic low and output the
modulating phase when the modulating waveform is logic high. The situation is the
opposite when the polarity is set to “Neg”.
In external modulation, set the polarity to “Pos” and the generator would output
the carrier phase when logic low level is input and output the modulating phase
when logic high level is input. The situation is the opposite when the polarity is set
to “Neg”.