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 choosing Additional Graphs > FFT Graph from the Insert menu. Collected data will be shown on the FFT graph in real time.
Double-click the FFT graph or choose Additional Graph Options > FFT Graph Options from the Options menu to access the FFT Graph Options dialog. In the dialog you can change which columns are displayed and other aspects of the graph's appearance.