Rigol DG811, User Manual

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Chapter 2 Front Panel Operations RIGOL
DG800 User's Guide 2-35

When the carrier waveform currently selected is Sine, Square, or Ramp, please
refer to descriptions 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 descriptions in "To Output the Arbitrary Waveform" to set the
parameters of the carrier waveform currently selected.
To Select Modulation Source
DG800 can receive modulating waveform from the internal or external modulation
source. Tap the Source parameter selection field to select an "Internal" or "External"
modulation source.
1. Internal Source
When the internal modulation source is selected, tap the Mod.Wave parameter
selection field to select Sine, Square, Triangle, UpRamp, DnRamp, Noise, or Arb
as modulating waveform. By default, Sine is selected.

Square: 50% duty cycle.

Triangle: 50% symmetry.

UpRamp: 100% symmetry.

DnRamp: 0% symmetry.

Arb: the arbitrary waveform selected for the current channel.
Note:
Noise can be used as the modulating waveform but cannot be used as
carrier waveform.
2. External Source
When the external modulation source is selected, Mod.Wave and Mod.Freq
will be grayed out and disabled. The generator receives the external modulating
signal from the rear-panel [CH1/Sync/Ext Mod/Trig/FSK] connector. At this
time, amplitude of the modulated waveform is controlled by the ±5 V signal level
of the connector. For example, if the modulation depth is set to 100%, the output
amplitude will be the maximum when the modulating signal is +5 V and the
minimum when the modulating signal is -5 V.