User manual

RIGOL Chapter 5 Modulated Waveform Output
DG4000 User's Guide
5-34
To Select the Modulating Waveform Source
Press Mod  Source to select "Int" or "Ext" modulating waveform source.
1. Internal Source
When internal modulation source is selected, press Shape to select Sine,
Square, Triangle, UpRamp, DnRamp, Noise or Arb as modulating waveform.
The default is Sine.
 Square: 50% duty cycle.
 Triangle: 50% symmetry.
 UpRamp: 100% symmetry.
 DnRamp: 0% symmetry.
 Arb: when arbitrary waveform is selected as modulating waveform, the
generator would limit the waveform length to 2kpts automatically.
Note: Noise can be used as modulating waveform but cannot be used as
carrier waveform.
2. External Source
When external modulation source is selected, the Shape menu will be grayed
out and disabled. The generator receives the external modulating signal from
the [Mod/FSK/Trig] connector at the rear panel. The "WidthDev" (or
"DutyDev") is controlled by the ±2.5 V signal level of the connector.
To Set the Modulating Waveform Frequency
When internal modulation source is selected, press PWM Freq to set the
frequency of the modulating waveform.
[Mod/FSK/Trig]