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SIGLENT
SDS2000X User Manual 111
FFT Operation
FFT is used to compute the fast Fourier transform using analog input channels or
reference waveforms. FFT takes the digitized time record of the specified source and
transforms it to the frequency domain. When the FFT function is selected, the FFT
spectrum is plotted on the oscilloscope display as magnitude in dBV versus frequency.
The readout for the horizontal axis changes from time to frequency (Hertz) and the vertical
readout changes from volts to dB.
FFT operation can facilitate the following works:
Measure harmonic components and distortion in the system
Measure the characteristics of the noise in DC power
Analyze vibration
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