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Difference between revisions of "NVGate FFT"
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→FFT analysis
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* '''Reverse cross function:''' this setting allows calculating the cross function of the greyed part of the Cross spectrum setting. Default value is True except on cascaded mode (multiple hardware) as the number of reference spectrum to be carried between the analyzers may lead to a dramatic loss of performances. | * '''Reverse cross function:''' this setting allows calculating the cross function of the greyed part of the Cross spectrum setting. Default value is True except on cascaded mode (multiple hardware) as the number of reference spectrum to be carried between the analyzers may lead to a dramatic loss of performances. | ||
* '''Cross spectrum''': Matrix used for the selection of the computed cross spectra, Only the upper half of the matrix can be used, because when a box is checked, two cross spectra are computed with each of both channels being the reference. Selecting the cross spectra is necessary to have access to some results: instant cross spectrum, average cross spectrum, FRF H1, FRF H2 and coherence. | * '''Cross spectrum''': Matrix used for the selection of the computed cross spectra, Only the upper half of the matrix can be used, because when a box is checked, two cross spectra are computed with each of both channels being the reference. Selecting the cross spectra is necessary to have access to some results: instant cross spectrum, average cross spectrum, FRF H1, FRF H2 and coherence. | ||
* '''Autobandwidth''': manages the analysis and recording bandwidths automatically. The ''Inputs selection'' window '''allows the use of 2 different sampling rates for the dynamic inputs'''. It gathers inputs with the same physical quantity into groups, maintaining the same sampling into each group. When inputs are associated with '''the analysis plug-in, it adjusts its analysis bandwidth to match the inputs ones'''. Mixing input bandwidths in one analysis plug-in lead to set its bandwidth to the lowest one. ''Autobandwidth'' is set by default in the FFT plug-ins. it adjusts the setting : FFT Analysis\Range .When it is enabled in the plug-in, these settings "switch to informative status" | |||
=====FFT zoom===== | =====FFT zoom===== | ||
Unlike the display zoom function; the analysis zoom function allows you to zoom into a selected bandwidth increasing the analysis resolution. | Unlike the display zoom function; the analysis zoom function allows you to zoom into a selected bandwidth increasing the analysis resolution. | ||