Fast Fourier Transform
Detailed discussions of FFT will be provided in later sections. Our purpose now is to try out several examples and to
get a feel for working with this function. FFT is a widely-used technique that converts a time-domain signal into the
frequency components. It is useful for analyzing vibrations, measuring noise in power supplies, measuring harmonics
in systems, among many. To try this out,
1. Press on the blue bezel button next to Advanced Functions to get to FFT.
2. Make sure that Source is Ch1.
3. Use the knob above the buttons to adjust the vertical level.
4. Under Window there are three options: Rectangle, Hamming, Hanning. Each window Is well-suited for a particular
purpose, and the detailed discussions are given at later sections. For now, choose Rectangle.
5. Press Execute. The resulting transform will be displayed at the bottom of the screen.
6. Pressing RUN/STOP can get you out of the frozen mode.
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