Rigol DG800 Series, Руководство пользователя

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Chapter 2 Front Panel Operations RIGOL
DG800 User's Guide 2-55
To Set Width/Duty Deviation
If "Width" is currently selected in the pulse of the specified channel, "Width Dev" is
displayed in the interface when the PWM modulation function is enabled; if the
"Duty" is currently selected in the pulse of the specified channel, "Duty Dev" is
displayed in the interface when the PWM modulation function is enabled.
Tap the Width Dev (or Duty Dev) parameter input field and use the numeric
keypad to input a desired value. You can also use the arrow keys and the knob to
input a desired value.

Width deviation represents the variation of the modulated waveform pulse width
relative to the original pulse width (the available units are ns, μs, ms, s, and ks).
Width deviation cannot exceed the current pulse width.
The width deviation is limited by the minimum pulse width and current edge
time setting.

Duty deviation represents the variation of the modulated waveform pulse duty
cycle relative to the original duty cycle (expressed in %).
Duty deviation cannot exceed the current duty cycle of the pulse.
The duty deviation is limited by the minimum duty cycle and current edge time
setting.
When the external modulation source is selected, the width deviation is controlled by
the ±5 V signal level on the rear-panel [CH1/Sync/Ext Mod/Trig/FSK] connector.
For example, if the width deviation is set to 10 s, the +5 V signal level corresponds to
a 10 s width variation.