Instructions

4.Panel Operation
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(5) Press the Phase Modulation Frequency softkey to set the phase modulation
frequency. The range is from 2 mHz to 100 kHz (for internal sources only).
(6) Press Phase Deviation to set the phase deviation, which is the offset of the
phase, ranging from 0° to 180°.
Pulse Width Modulation (PWM)
The output modulation waveform consists of a carrier wave and a modulated wave.
The pulse width modulation function can only be applied to the modulated pulse
wave, so the carrier can only be a pulse wave. In pulse width modulation, the pulse
width of a carrier (pulse wave) varies with the instantaneous voltage of the
modulation waveform.
Figure 4-14 Pulse width modulation user interface
Steps to set pulse width modulation
(1) First set the carrier to pulse wave, press Mod to enter PWM modulation mode.
(2) After pressing the Mod function button, press the Modulation Type softkey, us e
the knob to select the modulation type as PWM, and press the Enter soft key.
(3) Press to display the waveform and parameters of the current carrier. You
can change the parameters of the carrier. For details, please refer to Output Sine
Wave on page 10. Press or Mod to return to the modulation mode
interface.