Waveform Generator 20
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 259
To set up Frequency Modulation (FM)
In the Modulation dialog box when Frequency Modulation (FM) is selected:
1 From the Waveform drop-down list, select the shape of the modulating signal:
• Sine
2 In the FM Freq field, enter the frequency of the modulating signal.
3 In the FM Dev field, enter the frequency deviation from the original carrier signal
frequency.
When the modulating signal is at its maximum amplitude, the output frequency
is the carrier signal frequency plus the deviation amount, and when the
modulating signal is at its minimum amplitude, the output frequency is the
carrier signal frequency minus the deviation amount.
The frequency deviation cannot be greater than the original carrier signal
frequency.
Also, the sum of the original carrier signal frequency and the frequency
deviation must be less than or equal to the maximum frequency for the selected
waveform generator function plus 100 kHz.
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