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To Output a PWM Waveform
You can configure the function generator to output a pulse width modulated
(PWM) waveform. The Keysight 33210A provides PWM for pulse carrier
waveforms, and PWM is the only type of modulation supported for pulse
waveforms. In PWM, the pulse width or duty cycle of the carrier waveform is
varied according to the modulating waveform. You can specify either a pulse
width and width deviation, or a pulse duty cycle and duty cycle deviation, the
deviation to be controlled by the modulating waveform.
For this example, you will specify a pulse width and pulse width deviation for a 1
kHz pulse waveform with a 100 Hz sine wave modulating waveform.
1 Select the carrier waveform parameters.
2 Select PWM.
3 Set the wid th deviation.
Keysight 33210A User's Guide
Press
and then press the Freq, Ampl, Offset, Wid th, and Edge Time
softkeys to configure the carrier waveform. For this example, select a 1 kHz
pulse waveform with an amplitude of 1 Vpp, a zero offset, a pulse width of 100
μs, and an edge time of 50 ns.
Press
(PWM is the only modulation type for Pulse). Notice that a status
message "PWM by Sine" is shown in the upper-left corner of the display.
Press the Wid th Dev softkey and set the value to 20 μs using the numeric
keypad or the knob and cursor keys.
Front-Panel Menu Operation
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