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Chapter 3 Features and Functions
Frequency Modulation (FM)
3
Frequency Deviation
The frequency deviation setting represents the peak variation in
frequency of the modulated waveform from the carrier frequency.
• Frequency deviation: 1 µHz to 10.05 MHz (limited to 150 kHz
for
ramps and 3.05 MHz for arbitrary waveforms).
The default is 100 Hz.
•The carrier frequency must always be greater than or equal to the
deviation. If you attempt to set the deviation to a value greater than
the carrier frequency (with FM enabled), the function generator will
limit the deviation to the maximum value allowed with the present
carrier frequency.
• The sum of the carrier frequency and deviation must be less than or
equal to the maximum frequency for the selected function
plus 100 kHz
(20.1 MHz for sine and square, 300 kHz for ramp, and 6.1 MHz for
arbitrary waveforms). If you attempt to set the deviation to a value
that is not valid, the function generator will limit it to the maximum
value allowed with the present carrier frequency.
•
Front-Panel Operation
: After enabling FM, press the
Freq Dev
softkey.
Then use the knob or numeric keypad to enter the desired deviation.
• Remote Interface Operation:
FM:DEViation {<peak deviation in Hz>|MINimum|MAXimum}
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