User Manual

m) Pulse Width Modulation (PWM)

In PWM, modulated waveform generally is composed of carrier wave and modulation wave.

The pulse width of carrier wave will vary with the amplitude of modulation wave. The

modulation mode of the two channels is mutually independent. You can configure same or

different modulation mode for channel 1 and 2.

Select PWM

Press Menu → Mod → Type → PMW successively to use PWM function (if Type is not

highlighted, it may be necessary to press soft key Type twice to display the next screen

of sub-tags). After PWM function is used, UTG2000B function/arbitrary waveform generator

will output modulated waveform with the current modulation waveform and carrier wave.

Figure 4- 20 Select PWM function

Carrier waveform

PWM carrier waveform can only be pulse wave. After PWM is selected, press Carrier to

enter interface of carrier waveform. You can see the Pulse Wave is automatically selected.