Features and Functions 3
Keysight 33210A User’s Guide 99
Pulse Width Modulation (PWM)
In Pulse Width Modulation (PWM), the width of a pulse waveform is varied by the
instantaneous voltage of the modulating waveform. The width of the pulse can be
expressed either as a pulse width (expressed in time units, like the period) or a
duty cycle (expressed as a percentage of the period). The function generator will
accept an internal or external modulation source.
For more information on the fundamentals of Pulse Width Modulation, refer to
Chapter 7, "Tutorial".
To Select PWM Modulation
– The function generator only allows PWM to be selected for a pulse waveform,
and PWM is the only modulation type supported for pulse.
– The function generator will not allow PWM to be enabled at the same time
that sweep or burst is enabled.
– Front-Panel Operation: You must enable PWM before setting up any of the
other modulation parameters. Press to select pulse, and then press
to turn on modulation. PWM is selected as the only modulation type supported
for pulse. The PWM waveform is output using the present settings for the pulse
frequency, modulating frequency, output amplitude, offset voltage, pulse
width, and edge time.
– Remote Interface Operation: To avoid multiple waveform changes, enable
PWM after you have set up the other modulation parameters.
PWM:STATe {OFF|ON}
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