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Difference between revisions of "NVGate FFT"
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→FFT
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==FFT== | ==FFT== | ||
The FFT plug-in provide frequency distribution of the analyzed signal. It runs an FFT algorithm. | |||
[[Image:Reports_Tools_Ribbons_391.png|framed|none]] | |||
Note: Clicking on the bottom right icon ( | |||
[[Image:Reports_Tools_Ribbons_392.png]] | |||
) opens the FFTx plug-in properties dialog allowing a full access to all the settings. | |||
Note: Up to 4 FFT plug-in can be present in the software configuration, each of them running independent analyses on the same or different channels. | |||
* | |||
[[Image:Reports_Tools_Ribbons_393.png|framed|none]] | |||
Range: Setup the analysis range for the plug-in. This value is maximized by the front-end sampling frequency divided by 2.56.<br>Note: Each plug-in feature an independent bandwidth. | |||
* | |||
[[Image:Reports_Tools_Ribbons_394.png|framed|none]] | |||
Lines: Select the analysis resolution in number of frequency lines. The ''resolution = Range / (Lines-1) '' in Hz | |||
* | |||
[[Image:Reports_Tools_Ribbons_395.png|framed|none]] | |||
Average: Select the domain of averaging: | |||
* <u>''Spectral''</u>: the spectra module are averaged together | |||
* <u>''Time''</u>: the trigger block are averaged together -<nowiki>></nowiki> provide absolute / relative phase | |||
* <u>''Frequency domain synchronous (FDSA)'': </u>The complex spectra are averaged together (real/img) after phase synchronization on one spectral line -<nowiki>></nowiki> allows synchronous time averaging (STA) without a trigger. | |||
This plug-in is used to compute the input signal FFT (you can also compute time signals in post analysis mode with the Player module). | This plug-in is used to compute the input signal FFT (you can also compute time signals in post analysis mode with the Player module). | ||