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Chapter 2 Front-Panel Menu Operation
To Output a PWM Waveform
4
2
4 Set the modulating frequency.
Press the PWM Freq softkey and then set the value to 5 Hz using the
numeric keypad or the knob and cursor keys.
5 Select the modulating waveform shape.
Press the Shape softkey to select the shape of the modulating waveform.
For this example, select a sine wave.
At this point, the waveform generator outputs a PWM waveform with the
specified modulation parameters (if the output is enabled).
Of course, to really view the PWM waveform, you would need to output it
to an oscilloscope. If you do this, you will see how the pulse width varies,
in this case, from 80 to 120 s. At a modulation frequency of 5 Hz, the
deviation is quite visible.
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