You can define windows before a spectrum is computed. A window applies a shaping function to the waveform signal before the analyzer computes the spectrum, and helps to prevent leakage in a spectrum. The Hanning and Uniform options are available for most measurements. Force/Exponential is available for Impact mode.
|Hanning||Smooth out end effects and reduce leakage in the spectrum. Use the Hanning window for normal analyzer operation.|
|Uniform||Does not apply any shaping and is subject to leakage and amplitude errors. Use Uniform when you analyze transient signals that are contained within the analysis time record length.|
Force/Exponential window is the default
for Impact mode. Impact testing normally requires two window types. The
analyzer applies a
Force window to the hammer channel, and an
Exponential window to the response
Force/Exponential window automatically
applies these window types to the appropriate data.
Configure the following parameters.