Specifies the FFT window type to use to reduce spectral leakage. Refer to the Window and FFT section of the Spectrum topic for more information about FFT window types.

Syntax

Namespace: NationalInstruments.RFmx.SpecAnMX

public enum RFmxSpecAnMXSpurFftWindow

Members

NameValueDescription
None0

Analyzes transients for which duration is shorter than the window length. You can also use this window type to separate two tones with frequencies close to each other but with almost equal amplitudes.

FlatTop1

Measures single-tone amplitudes accurately.

Hanning2

Analyzes transients for which duration is longer than the window length. You can also use this window type to provide better frequency resolution for noise measurements.

Hamming3

Analyzes closely-spaced sine waves.

Gaussian4

Provides a good balance of spectral leakage, frequency resolution, and amplitude attenuation. Hence, this windowing is useful for time-frequency analysis.

Blackman5

Analyzes single tone because it has a low maximum side lobe level and a high side lobe roll-off rate.

BlackmanHarris6

Useful as a good general purpose window, having side lobe rejection greater than 90 dB and having a moderately wide main lobe.

KaiserBessel7

Separates two tones with frequencies close to each other but with widely-differing amplitudes.