RIGOL DG4000 Series - Manual (Page 113)

Chapter 5 Modulated Waveform Output RIGOL
DG4000 Series User’s Guide 5-13
To Set Modulating Amplitude
Press ModAmp to set the modulating amplitude.
 Use the numeric keyboard or direction keys and knob to input the desired
amplitude value.
 The range of amplitude (HighZ) is from 0 to 10V and the default is 2V.
To Set Modulating Polarity
Press Polarity to select the “Pos” or “Neg” polarity of the modulating waveform to
control the output amplitude.
In internal modulation, set the polarity to “Pos” and the generator would output
the greater of the carrier amplitude and modulating amplitude when the
modulating waveform is logic high and output the lower when the modulating
waveform is logic low. 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 greater of the carrier amplitude and modulating amplitude when logic high
level is input and output the lower when the logic low level is input. The situation is
the opposite when the polarity is set to “Neg”.