User Manual

Figure 4- 4 OSK waveform with oscilloscope

j)Sum Modulation(SUM)

In SUM, the modulated waveform generally is composed of carrier wave and modulation

wave. The output waveform is obtained by the sum of product of carrier amplitude and

modulation factor and product of amplitude of modulation wave and modulation factor.

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

or different modulation mode for channel 1 and 2.

Select SUM

Press Menu → Type → SUM successively to use SUM function (if Type is not highlighted,

press soft key Type to select). After SUM function is used, UTG2000B function/arbitrary

waveform generator will output modulated waveform with the current modulation waveform

and carrier wave.

Figure 4- 5 Select SUM function

Select carrier waveform

SUM carrier waveform can be sine wave, square wave, ramp wave or arbitrary wave

(except DC), and is sine wave by default. After SUM is selected, press the key of basic

waveform setting to quickly set corresponding carrier waveform.

Set carrier frequency

See Carrier wave frequency setting

Select modulation source

UTG2000B function/arbitrary waveform generator can select internal or external modulation

source. After you use SUM function, you can see that modulation source is internal by

default. You can change it with multi-functional knob on the interface for using SUM function

or by pressing Param → Source