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Baseband FFT VIs (Sound and Vibration Measurement Suite)

Sound and Vibration Measurement Suite 6.0 Help
December 2007

NI Part Number:
372416A-01

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Owning Palette: Frequency Analysis VIs

Use the Baseband FFT VIs to perform baseband FFT measurements.

The VIs on this palette can return ranges of LabVIEW error codes or specific sound and vibration error codes.

Palette ObjectDescription
SVFA Coherent Output PowerComputes coherent output power [dB EUy] and coherence based on scaled signal X [EUx] and scaled signal Y [EUy].
SVFA Cross Spectrum (Mag-Phase)Computes the cross power spectrum of scaled signal X [EUx] and scaled signal Y [EUy]. Results are returned in magnitude [dB EUx EUy] and phase [degrees].
SVFA Cross Spectrum (Real-Im)Computes the cross power spectrum of scaled signal X [EUx] and scaled signal Y [EUy]. Results are returned in real part [EUx EUy rms] and imaginary part [EUx EUy rms].
SVFA FFT Spectrum (Complex)Computes the FFT spectrum of scaled signal [EU]. The VI returns FFT results as a complex spectrum. You can use this polymorphic VI to analyze data from a single channel or from N channels. The data type you wire to the scaled signal [EU] input determines the polymorphic instance to use.
SVFA FFT Spectrum (Mag-Phase)Computes the FFT spectrum of scaled signal [EU]. FFT results are returned as magnitude [dB EU] and phase [degrees]. You can use this polymorphic VI to analyze data from a single channel or from N channels. The data type you wire to the scaled signal [EU] input determines the polymorphic instance to use.
SVFA FFT Spectrum (Real-Im)Computes the FFT spectrum of scaled signal [EU]. FFT results are returned in real part [EU rms] and imaginary part [EU rms]. You can use this polymorphic VI to analyze signals from a single channel or from N channels. The data type you wire to the scaled signal [EU] input determines the polymorphic instance to use.
SVFA Frequency Response (Mag-Phase)Computes the frequency response and coherence based on stimulus signal X [EUx] and response signal Y [EUy]. Results are returned as magnitude [dB EUy/EUx], phase [degrees], and coherence.
SVFA Frequency Response (Real-Im)Computes the frequency response and the coherence based on stimulus signal X [EUx] and response signal Y [EUy]. Results are returned as coherence, real part [EUy/EUx rms], and imaginary part [EUy/EUx rms].
SVFA Power Spectral DensityComputes the power spectral density of the input signal or signals. You can use this polymorphic VI to analyze data from a single channel or from N channels. The data type you wire to the scaled signal [EU] input determines the polymorphic instance to use.
SVFA Power SpectrumComputes the power spectrum of scaled signal [EU]. You can use this polymorphic VI to analyze signals from a single channel or from N channels. The data type you wire to the scaled signal [EU] input determines the polymorphic instance to use.


SubpaletteDescription
Baseband Subset VIsUse the Baseband Subset VIs to compute subsets of the baseband FFT measurements.

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