RIGOL Chapter 2 Front Panel Operations
2-42 DG1000Z User’s Guide
Phase Modulation (PM)
For phase modulation (PM), the phase of the carrier waveform varies with the
instantaneous voltage of the modulating waveform.
To Select PM Modulation
Press Mod Type PM to enable PM function. When Mod is enabled, Sweep or
Burst will be disabled automatically (if enabled currently).
To Select Carrier Waveform Shape
PM carrier waveform could be Sine, Square, Ramp or Arbitrary waveform (except
DC). The default is Sine.
Press the front panel key Sine, Square, Ramp or Arb (you need to press
Select Wform in the arbitrary waveform setting interface to select the desired
arbitrary waveform) to select the desired carrier waveform shape.
Pulse, Noise and DC could not be used as carrier waveform.
To Set Carrier Waveform Parameters
The different settings of various parameters (frequency, amplitude, DC offset, etc.)
of the carrier waveform will influence the PM modulated waveform. For different
carrier waveform shape, the ranges of the various parameters are different (the
ranges are related to the model of the instrument used and the carrier waveform
currently selected. See “Specifications” for details). For all carrier waveform
shapes, the default values are 1kHz frequency, 5Vpp amplitude and 0V
DC
offset.
When the carrier waveform currently selected is Sine, Square or Ramp, please
refer to the introduction in “To Output Basic Waveform” to set the
parameters of the carrier waveform currently selected.
When the carrier waveform currently selected is arbitrary waveform, please
refer to the introduction in “To Output Arbitrary Waveform” to set the
parameters of the carrier waveform currently selected.
Note: when PM function is enabled, the start phase of the carrier waveform can not
be set.
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