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Output a PWM Waveform
You can configure the instrument to output a pulse width modulated (PWM) waveform. PWM is only available for the
Pulse waveform, and the pulse width varies according to the modulating signal. The amount by which the pulse
width varies is called the width deviation, and it can be specified as a percentage of the waveform period (that is,
duty cycle) or in units of time. For example, if you specify a pulse with 20% duty cycle and then enable PWM with a
5% deviation, the duty cycle varies from 15% to 25% under control of the modulating signal.
To change from pulse width to pulse duty cycle, press [Units].
For this example, you will specify a pulse width and pulse width deviation for a 1 kHz pulse waveform with a 5-Hz
sine wave modulating waveform.
1. Select the carrier waveform parameters.
Press [Waveform] > Pulse. Use the Frequency, Amplitude, Offset, Pulse Width, and Edge Times soft keys to configure
the carrier waveform. For this example, select a 1 kHz pulse waveform with an amplitude of 1 Vpp, zero offset, a
pulse width of 100 ms, and an edge time of 50 ns (both leading and trailing).
Keysight EDU33210 Series User's Guide
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