314 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
19 Waveform Generator
Note that adding noise affects edge triggering on the waveform generator source
(see “Edge Trigger" on page 172) as well as the waveform generator sync pulse
output signal (which can be sent to TRIG OUT, see “Setting the Rear Panel TRIG
OUT Source" on page 350). This is because the trigger comparator is located after
the noise source.
To add modulation to the waveform generator output
Modulation is where an original carrier signal is modified according to the
amplitude of a second modulating signal. The modulation type (AM, FM, or FSK)
specifies how the carrier signal is modified.
Modulated waveforms are available on the WaveGen1 output.
To enable and set up modulation for the waveform generator output:
1 If the Waveform Generator Menu is not currently displayed on the
oscilloscope'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 waveform
generator output.
You can enable modulation for all waveform generator function types except
arbitrary, square, pulse, DC, noise, and Gaussian pulse.
• Press the Type softkey and turn the Entry knob to select the modulation type:
• Amplitude Modulation (AM) — the amplitude of the original carrier signal is
modified according to the amplitude of the modulating signal. See “To
set up Amplitude Modulation (AM)" on page 315.
• Frequency Modulation (FM) — the frequency of the original carrier signal is
modified according to the amplitude of the modulating signal. See “To
set up Frequency Modulation (FM)" on page 316.
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