Rigol DG800 Series, Руководство пользователя

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RIGOL Chapter 2 Front Panel Operations
2-34 DG800 User's Guide
Modulation
DG800 can output modulated waveforms from a single channel or from dual
channels at the same time. Modulation is the process of modifying certain
parameters (e.g. amplitude, frequency, or phase) of the carrier waveform signal
according to the changes of the modulating signal. The carrier waveform can be Sine,
Square, Ramp, Arbitrary waveform, or Pulse (only in PWM). The modulating
waveform can be from internal or external modulation source. The modulation types
supported by DG800 include AM, FM, PM, ASK, FSK, PSK, and PWM.
Amplitude Modulation (AM)
For amplitude modulation (AM), the amplitude of the carrier waveform varies with
the instantaneous voltage of the modulating waveform.
To Select AM Modulation
Press Menu

Modulation

"AM" to enable the AM function. When Modulation
is enabled, Sweep or Burst will be automatically disabled (if enabled currently). Tap
the icon
at the upper-right corner of the interface (when Sine is selected as the
carrier waveform) to view and set the parameters of the current carrier waveform.
Tap the icon
at the upper-right corner of the interface again to go back to the
current modulation parameter interface.
To Select the Carrier Waveform
AM carrier waveform could be Sine, Square, Ramp, or Arbitrary waveform. The
default is Sine.

Press Menu

Continuous to select the desired carrier waveform.

Pulse, Noise, Harmonic, Dual-tone, and DC could not be used as carrier
waveform.
To Set Carrier Waveform Parameters
The different settings of various parameters (e.g. frequency, amplitude, offset, and
start phase) of the carrier waveform will affect the output AM modulated waveform.
For different carrier waveform shapes, the ranges of the various parameters are
different (the ranges are related to the instrument model that you are using and the
currently selected carrier waveform). For all carrier waveform shapes, the default
values are 1 kHz frequency, 5 Vpp amplitude, 0 Vdc offset, and 0° start phase.