User manual

Chapter 5 Modulated Waveform Output RIGOL
DG4000 Series Users 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 low and output the lower 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 greater of the carrier amplitude and modulating amplitude when logic low level
is input and output the lower when the logic high level is input. The situation is the
opposite when the polarity is set to Neg.