This attribute controls or indicates the windowing function which will be used when performing the discrete Fourier transform for the analysis. The WindowFunction and the Equivalent Noise Bandwidth are related. If a particular WindowFunction is selected, then the EquivalentNoiseBandwidth for the function which is in use, will be reported by the EquivalentNoiseBandwidth attribute. Alternatively if an EquivalentNoiseBandwidth value is chosen then if a WindowFunction function representing that EquivalentNoiseBandwidth is defined in the CM, that value will be reported in the WindowFunction MIB object, or a value of 'other' will be reported. Use of 'modern' windowing functions not yet defined will likely be reported as 'other'.

Note that all window functions may not be supported by all devices. If an attempt is made to set the object to an unsupported window function, or if writing of the WindowFunction is not supported, an error will be returned.