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Chapter 3 Features and Functions
Frequency Modulation (FM)
3
Frequency Modulation (FM)
A modulated waveform consists of a carrier waveform and a
modulating waveform. In FM, the frequency of the carrier is varied
by the instantaneous voltage of the modulating waveform.
For more information on the fundamentals of Frequency Modulation,
refer to chapter 5, “Tutorial.”
To Select FM Modulation
• The waveform generator will allow only one modulation mode to be
enabled at a time. When you enable FM, the previous modulation
mode is turned off.
• The waveform generator will not allow FM to be enabled when sweep
or burst is enabled. When you enable FM, the sweep or burst mode is
turned off.
• Front-Panel Operation: You must select FM before setting up any of
the other modulation parameters. Press
and then select FM
using the Type softkey. The FM waveform is output using the present
settings for the carrier frequency, modulating frequency, output
amplitude, and offset voltage.
• Remote Interface Operation: To avoid multiple waveform changes,
enable FM after you have set up the other modulation parameters.
FM:STATe {OFF|ON}
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