Baseband FFT VIs
- Updated2024-06-18
- 3 minute(s) read
Baseband FFT VIs
Owning Palette: Frequency Analysis VIs, Stimulus-Response Test VIs
Use the Baseband FFT VIs to perform baseband FFT measurements.
The VIs on this palette can return general LabVIEW error codes or specific sound and vibration error codes.
| Palette Object | Description |
|---|---|
| SVFA Coherent Output Power | Computes the coherent output power and coherence of 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 and phase. |
| 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 and imaginary part. |
| SVFA FFT Spectrum (Complex) | Computes the Fast Fourier Transform (FFT) spectrum of scaled signal [EU]. This VI returns FFT results as the complex form of the FFT spectrum. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance. |
| SVFA FFT Spectrum (Mag-Phase) | Computes the Fast Fourier Transform (FFT) spectrum of scaled signal [EU]. This VI returns FFT results as the magnitude and phase of the FFT spectrum. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance. |
| SVFA FFT Spectrum (Real-Im) | Computes the Fast Fourier Transform (FFT) spectrum of scaled signal [EU]. This VI returns FFT results as the real and imaginary parts, or the first and second elements of the ordered pairs, of the FFT spectrum. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance. |
| SVFA Frequency Response (Mag-Phase) | Computes the magnitude, phase, and coherence of the frequency response of the device under test [DUT]. This VI computes the ratio of the output to the input of the DUT. Wire data to the stimulus signal X [Eux] and response signal Y [Euy] inputs to determine the polymorphic instance to use or manually select the instance. |
| SVFA Frequency Response (Real-Im) | Computes the real and imaginary components and coherence of the frequency response of the device under test [DUT]. This VI computes the ratio of the output to the input of the DUT. |
| SVFA Peak Amplitude and Relative Phase | Use this VI to compute FFT spectra with magnitude equal to response magnitude and phase equal to response relative to reference. Use the N responses, 1 stimulus instance to compute phase-assigned auto spectra for multiple response channels. |
| SVFA Power Spectral Density | Computes the power spectral density of scaled signal [EU] and returns the result in the selected units. Use the power spectral density to make repeatable measurements of the noise floor that are independent of the block size. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance. |
| SVFA Power Spectrum | Computes the power spectrum of scaled signal [EU]. Use the power spectrum to quantify signal components as a function of frequency. Wire data to the scaled signal [EU] input to determine the polymorphic instance to use or manually select the instance. |
| Subpalette | Description |
|---|---|
| Baseband Subset VIs | Use the Baseband Subset VIs to compute subsets of the baseband FFT measurements. |