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Computes the averaged cross power spectrum of the input signals. Results are returned as real and imaginary parts. Details  

	restart averaging specifies if the VI must restart the selected averaging process. If restart averaging is TRUE, the VI restarts the selected averaging process. If restart averaging is FALSE, the VI does not restart the selected averaging process. The default is FALSE. When you call this VI for the first time, the averaging process restarts automatically. A typical case when you should restart averaging is when a major input change occurs in the middle of the averaging process.
	time signal X is the time waveform X.
	time signal Y is the time waveform Y.
	window is the time-domain window to use. 0 Uniform 1 Hanning (default) 2 Hamming 3 Blackman-Harris 4 Exact Blackman 5 Blackman 6 Flat Top 7 Four Term Blackman-Harris 8 Seven Term Blackman-Harris 9 Low Sidelobe 11 Blackman Nutall 30 Triangle 60 Kaiser 61 Dolph-Chebyshev 62 Gaussian
	error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node. status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE. code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
	averaging parameters defines how the averaging is computed. averaging mode specifies the averaging mode. 0 No averaging (default) 1 Vector averaging 2 RMS averaging 3 Peak hold weighting mode specifies the weighting mode for RMS and Vector averaging. 0 Linear 1 Exponential (default) number of averages specifies the number of averages that is used for RMS and Vector averaging. If weighting mode is Exponential, the averaging process is continuous. If weighting mode is Linear, the averaging process stops after the selected number of averages have been computed.
	averaging done returns TRUE when the number of averages completed equals or exceeds the number of averages specified in averaging parameters. Otherwise, averaging done returns FALSE. averaging done is always TRUE if the selected averaging mode is No averaging.
	real part returns the real part of the averaged cross power spectrum and the frequency scale. f0 is the start frequency of the spectrum expressed in hertz. df is the frequency resolution of the spectrum expressed in hertz. real part is the real part of the averaged cross power spectrum.
	imaginary part returns the imaginary part of the averaged cross power spectrum and the frequency scale. f0 is the start frequency of the spectrum expressed in hertz. df is the frequency resolution of the spectrum expressed in hertz. imaginary part is the imaginary part of the averaged cross power spectrum.
	averages completed returns the number of averages completed by the VI at that point.
	error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error. status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code. source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Cross Spectrum (Real-Im) Details

Typically, X signal is the stimulus, and Y signal is the response of the system. Each time waveform corresponds to a single FFT block. You have to pass each time waveform individually to this VI.