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Live FFT
By choosing beside the FFT Data also a trend graph (like THD_U) the live FFT feature can
be accessed. Once both are loaded the user can click on the live spectra button (marked
red) and a cursor appears in the lower display. This cursor can be moved left and right to
display the FFT at a certain time point.
3D (Waterfall) FFT
By clicking on the red marked 3D button, the waterfall FFT can be displayed. In the blue
marked area the projection of the FFT can be changed and in the blue marked area the Axis
scaling can be changed from logarithmic to linear and the first harmonic (fundamental) can
be removed. By clicking into the FFT window the waterfall graph can be rotated.
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