Features and Function
HDG2000 Series Arbitrary Waveform Generator 36
SCPI：
SOURce<n>:MOD:AM:SOURce INTernal|EXTernal
SOURce<n>:MOD:FM:SOURce INTernal|EXTernal
3.4 Phase Modulation (PM)
A modulated waveform consists of a carrier waveform and a modulating waveform. PM is very
similar to FM, but in PM the phase of the modulated waveform is varied by the instantaneous
voltage of the modulating waveform.
To Select Phase Modulation
Only one modulation mode may be enabled at a time. Enabling PM disables the previous
modulation mode.
Enabling PM turns off sweep and burst.
Front Panel:
The waveform is output using the present carrier and modulating waveform settings.
To avoid multiple waveform changes, enable modulation after configuring the other modulation
parameters.
SCPI:
SOURce<n>:MOD ON|OFF
SOURce<n>:MOD:TYPe AM|FM|PM|ASK|FSK|PSK|PWM|BPSK
Carrier Waveform Shape
PM carrier shape: Sine (default), Square, Ramp, Pulse or Arbitrary. You cannot use Noise or DC
as the carrier waveform.
Carrier Frequency
The maximum carrier frequency varies by function, as shown below. The default is 1 kHz for all
functions. Carrier frequency must be greater than 20 times the peak modulation frequency.
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