The FFT graph contains a Fast Fourier Transform (FFT) analysis of
the
selected data. The FFT gives the amplitudes of the frequency components
of a data series
and displays a bar graph showing the amplitudes of the frequencies
shown along the X-Axis. It can be used to find the frequencies and
amplitudes
of the sine wave components that make up a non-sinusoidal signal.
You can add a new FFT to your page by selecting Additional Graphs--> FFT from the Insert menu.
Changing the columns displayed: Double-click on the FFT graph. An axis options window appears from which you can select columns for display. You can also change the columns by selecting the Additional Graph Options -> FFT Graph Options from the Options menu.
Collected data will be assigned to the FFT graph in real time. Double-click on the graph or choose Additional Graph Options--> FFT Graph Options from the Options Menu to edit the new graph.