ni5660 Read FFT Spectrum

This VI computes the FFT spectrum that corresponds to the spectral settings specified in the ni5660 Configure for Spectrum VI. The VI returns a cluster that contains the FFT spectrum in Vrms, starting at frequency f0 and frequency interval df. Wire the FFT spectrum output to averaging and/or measurement VIs in the Spectral Measurements Toolkit.

receiver info in is the instrument handle that you obtain from the ni5660 Initialize VI. The handle identifies a particular RF Signal Analyzer session.

correction factor specifies the correction factor previously computed by the ni5660 Configure for Spectrum VI. Wire the correction factor output of the ni5660 Configure for Spectrum VI directly to this input. Do not modify the values.

error in accepts error information wired from previously called VIs. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. status boolean is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. code input identifies the error or warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. source string describes the origin of the error or warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

receiver info out passes a reference to your instrument session to the next VI. receiver info was obtained from the ni5660 Initialize VI. Note  Do not modify the contents of this wire manually.

FFT spectrum (Vrms) returns the averaged FFT spectrum in Vrms scaling, starting at frequency f0 with frequency interval df. f0 returns the start frequency of the spectrum, expressed in Hz. df returns the frequency interval between data points in the spectrum, expressed in Hz. spectrum returns the averaged FFT spectrum.

spectral info out returns properties of the computed spectrum such as spectrum type, spectrum scale (linear or dB), the window type used by the VI to compute the spectrum, window size, and FFT size. Connect this parameter to subsequent VIs that contain the spectral info input parameter. Do not modify the values.

error out passes error or warning information out of a VI to be used by other VIs. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. status is TRUE (X) if an error occurred, or FALSE (checkmark) for no error or a warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. code identifies the error or warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed. source describes the origin of the error or warning. The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.