3 Features and Functions
92 Keysight 33210A User’s Guide
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 7, "Tutorial".
To Select FM Modulation
– The function generator will allow only one modulation mode to be enabled at a
time. For example, you cannot enable FM and AM at the same time. When you
enable FM, the previous modulation mode is turned off.
– The function generator will not allow FM to be enabled at the same time that
sweep or burst is enabled. When you enable FM, the sweep or burst mode is
turned off.
– Front-Panel Operation: You must enable 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}