Computes the single-sided transfer function, also known as the frequency response, from the time-domain Stimulus Signal and Response Signal from a network under test.

This VI is similar to the Frequency Response Function (Mag-Phase) and the Frequency Response Function (Real-Im) VIs.

Note By default, reentrant execution is enabled in all Point By Point VIs.


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Inputs/Outputs

  • cbool.png initialize —

    initialize, when TRUE, initializes the internal state of the VI.

  • cdbl.png stimulus signal x —

    stimulus signal x is a time-domain signal, usually the network stimulus.

  • cdbl.png response signal y —

    response signal y is a time-domain signal, usually the network response.

  • cdbl.png dt —

    dt is the sample period of the time-domain signal, usually in seconds.

    dt is also 1/ fs, where fs is the sampling frequency of the time-domain signal.

  • ci32.png sample length —

    sample length is the length of each set of incoming data. The VI performs computation on each set of data. The default is 100.

    sample length must be greater than 0.

  • i1ddbl.png Frequency Response Mag (gain) —

    Frequency Response Mag is the single-sided frequency response spectrum of the network.

    This is the amplitude gain of the network.

  • i1ddbl.png Frequency Response Phase (radians) —

    Frequency Response Phase is the single-sided phase response spectrum of the network.

    This is the network phase in radians.

  • idbl.png df —

    df is the line frequency interval of the frequency response spectra, in hertz, when dt is in seconds.

  • ii32.png error —

    error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.