FFT Analysis

The FFT Analysis window consists of the following elements:

1. The Signals button - opens the Signals Window
2. Base frequency settings (an input field and a checkbox) - checking the Apply user base frequency will apply FFT with the base frequency set by the user in the input field to the left of the checkbox. Base frequency represents the fundamental harmonic with which Fast Fourier Transformation is applied. If it is not specified or if unchecked, the base frequency is calculated based on the length of the observed interval of the signals: if that length is, for example, 2 seconds, then the base frequency is 0.5 Hz (1 / 2 seconds).
3. Frequency limit settings (an input field and a checkbox) - checking the Apply user frequency limit will apply FFT with the frequency limit set by the user in the input field to the left of the checkbox.
4. Standard plot interaction toolbar - contains standard home/undo/redo buttons, pan/zoom commands, export plot as a .PNG image, visual settings for the background and the legend, as well as the Plot and Signal Properties window and the layout of the subplots.

The FFT Analysis window displays transformed data from either Capture or Signal Analyzer. If the data source is Capture, the FFT Analysis window will apply FFT and display the newly transformed data each time data is captured .