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Scope Features and Functions
2
Fast Fourier Transform Function
FFT is used to compute the fast Fourier transform using analog input channels or
math functions. 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 graph 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.
Figure 2-11
FFT controls
When the FFT source is channel 1 or channel 2, FFT units will be displayed in
NOTE
dBV.
Keysight U2701A/U2702A User's Guide
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