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Applies the selected weighting to a previously computed frequency spectrum or spectra. You can use this polymorphic VI to apply weighting to a single frequency spectrum or to N frequency spectra. The data type you wire to the spectrum info in input determines the polymorphic instance to use.

Use the pull-down menu to select an instance of this VI.

Select an instance SVT Telecommunications Weighting Filter (frequency) (1 Spectrum)SVT Telecommunications Weighting Filter (frequency) (N Spectra)

SVT Telecommunications Weighting Filter (frequency) (1 Spectrum)

	spectrum specifies the frequency-domain data to which this VI applies weighting. f0 specifies the start frequency, in hertz, of the spectrum. df specifies the frequency resolution, in hertz, of the spectrum. magnitude specifies the magnitude of the spectrum.
	weighting specifies the type of weighting to apply to the spectrum. The weighting is applied to the spectrum in the frequency domain. Use Linear if no weighting is needed. Linear (default) CCITT C-message
	spectrum info in specifies the properties of the previously computed spectrum. spectrum info in includes the channel name, spectrum type, spectrum scale as linear or dB, applied window, window size, FFT size, units, x-axis units, dB reference, applied weighting, peak units, and spectral density. Note  You must connect spectrum info in when performing extended measurements. Do not modify the spectrum info in values.
	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. Refer to Controlling Error Notification to treat what is normally an error as no error or to treat a warning as an error. 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.
	weighted spectrum returns the weighted spectrum. f0 returns the start frequency, in hertz, of the spectrum. df returns the frequency resolution, in hertz, of the spectrum. magnitude returns the magnitude of the weighted spectrum.
	unit label returns the selected engineering units.
	spectrum info out returns the properties of the computed spectrum. spectrum info out includes the channel name, spectrum type, spectrum scale as linear or dB, applied window, window size, FFT size, units, x-axis units, dB reference, applied weighting, peak units, and spectral density. Do not modify the spectrum info out values.
	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.

SVT Telecommunications Weighting Filter (frequency) (N Spectra)

	spectra contains the frequency-domain data for each spectrum. spectrum specifies the frequency-domain data to which this VI applies weighting. f0 specifies the start frequency, in hertz, of the spectrum. df specifies the frequency resolution, in hertz, of the spectrum. magnitude specifies the magnitude of the spectrum.
	weighting specifies the type of weighting to apply to the spectrum. The weighting is applied to the spectrum in the frequency domain. Use Linear if no weighting is needed. Linear (default) CCITT C-message
	spectrum info in specifies the properties of the previously computed spectrum. spectrum info in includes the channel name, spectrum type, spectrum scale as linear or dB, applied window, window size, FFT size, units, x-axis units, dB reference, applied weighting, peak units, and spectral density. Note  You must connect spectrum info in when performing extended measurements. Do not modify the spectrum info in values.
	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. Refer to Controlling Error Notification to treat what is normally an error as no error or to treat a warning as an error. 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.
	weighted spectra returns spectra after the application of a weighting filter. weighted spectrum returns the weighted spectrum. f0 returns the start frequency, in hertz, of the spectrum. df returns the frequency resolution, in hertz, of the spectrum. magnitude returns the magnitude of the weighted spectrum.
	unit labels returns the unit label for each channel.
	spectrum info out returns the properties of the computed spectrum. spectrum info out includes the channel name, spectrum type, spectrum scale as linear or dB, applied window, window size, FFT size, units, x-axis units, dB reference, applied weighting, peak units, and spectral density. Do not modify the spectrum info out values.
	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.