Rigol DG800 Series, Руководство пользователя

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Chapter 2 Front Panel Operations RIGOL
DG800 User's Guide 2-53
Pulse Width Modulation (PWM)
For PWM (Pulse Width Modulation), 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, first select
Pulse, then press Menu

Modulation

"PWM" to enable PWM function. Tap
the icon at the upper-right corner of the interface 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.

If the "Pulse" waveform is not selected, PWM modulation is unavailable.

When Modulation is enabled but the modulation type is not PWM, pressing
"Pulse" will select PWM automatically.

When Modulation is enabled, Sweep or Burst will be automatically disabled
(if enabled currently).
To Select the Carrier Waveform
As mentioned before, the carrier waveform of PWM can only be Pulse. To select Pulse
waveform, press Menu

Continuous

"Pulse".
To Set Carrier Waveform Parameters
The different settings of various parameters (e.g. frequency, amplitude, offset, pulse
width, and duty cycle) of the Pulse waveform will affect the output PWM modulated
waveform. For all the pulses, the ranges of the various parameters are different. The
default values are 1 kHz frequency, 5 Vpp amplitude, 0 Vdc offset, 500 µs pulse width,
and 50% duty cycle.
Please refer to descriptions in "To Output Basic Waveform" to set the parameters
of the carrier waveform.