222 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide17 Waveform GeneratorTo add noise to the waveform generator output1 If the Waveform Generator Menu is not currently displayed on theoscilloscope's softkeys, press the [Wave Gen] key.2 In the Waveform Generator Menu, press the Settings softkey.3 In the Waveform Generator Settings Menu, press the Add Noise softkey and turnthe Entry knob to select the amount of white noise to add to the waveformgenerator output.Note that adding noise affects edge triggering on the waveform generator source(see “Edge Trigger" on page 127) as well as the waveform generator sync pulseoutput signal (which can be sent to TRIG OUT, see “Setting the Rear Panel TRIGOUT Source" on page 256). This is because the trigger comparator is located afterthe noise source.To add modulation to the waveform generator outputModulation is where an original carrier signal is modified according to theamplitude of a second modulating signal. The modulation type (AM, FM, or FSK)specifies how the carrier signal is modified.To enable and set up modulation for the waveform generator output:1 If the Waveform Generator Menu is not currently displayed on theoscilloscope's softkeys, press the [Wave Gen] key.2 In the Waveform Generator Menu, press the Settings softkey.3 In the Waveform Generator Settings Menu, press the Modulation softkey.4 In the Waveform Generator Modulation Menu:• Press the Modulation softkey to enable or disable modulated waveformgenerator output.You can enable modulation for all waveform generator function types exceptpulse, DC, and noise.
