RIGOL DG5000 Series - Manual (Page 96)

RIGOL Chapter 4 Common Modulation Output
User’s Guide for DG5000 4-20
Pulse Width Modulation (PWM)
A PWM (Pulse Width Modulation) modulated waveform consists of carrier waveform
and modulating waveform. The pulse width of the carrier waveform varies with the
instantaneous voltage of the modulating waveform.
To Select PWM Modulation
PWM can only be used to modulate Pulse. To select PWM modulation type, press the
Pulse at the front panel first and then press Mod to enable PWM function.
 If the Pulse function key has not been selected, PWM in Type menu is
unavailable.
 When Mod is enabled but the modulation type is not PWM, pressing Pulse will
select PWM automatically.
 When Mod is enabled, Sweep or Burst will be automatically disabled (if
enabled currently).
 After PWM is enabled, the instrument will generate PWM waveform with the
currently specified carrier and modulating waveform.
To Select Pulse Waveform
As mentioned before, PWM can only be used to modulate Pulse. To select Pulse
waveform, press the Pulse at the front panel. Notice that, the pulse in Arb  Select
Wform  Builtin could not be used as carrier waveform.
To Set Pulse Width/Duty Cycle
After the carrier waveform shape is selected, press Width/Duty to highlight “Pulse
Width” or “Duty Cycle” and input the desired value using numeric keyboard or knob.
Pulse Width and Duty Cycle are correlative. For details, please refer to “
Pulse
Width/Duty Cycle” on page 2-7.