Rockwell Automation 1440-VSE02-01RA XM-122 gSE Vibration Module - Manual (Page 81)

Publication GMSI10-UM013D-EN-P - May 2010
Configuration Parameters 71
Tachometer Parameters The tachometer parameters define the characteristics of the tachometer and
determine the signal processing that will be performed on the tachometer
signal.
Tachometer Transducer Parameters
Window Type Type of window to be applied to the measurement
prior to computing the gSE spectrum.
•
Hanning - Most often used in predictive
maintenance. Gives fair peak amplitude accuracy,
fair peak frequency accuracy. Useful for random
type data where energy is at all frequencies.
•
Rectangular - Also known as Uniform. Gives poor
peak amplitude accuracy, good peak frequency
accuracy. Useful for impulsive or transient data.
•
Hamming - Gives fair peak amplitude accuracy,
fair peak frequency accuracy. Similar to Hanning.
•
Flat Top - Also called Sinusoidal window. Gives
good peak amplitude accuracy, poor peak
frequency accuracy for data with discrete
frequency components.
•
Kaiser Bessel - Gives fair peak amplitude
accuracy, fair peak frequency accuracy.
Options: Rectangular
Hamming
Hanning
Flat Top
Kaiser Bessel
Number of Averages Sets the number of individual data sets to be
incorporated into the average calculation for the gSE
spectrum. 1 = no averaging
gSE Spectrum Parameters
Parameter Name Description Values/Comments
Tachometer Transducer Parameters
Parameter Name Description Values/Comments
Tachometer Name (XM Serial
Configuration Utility only) A descriptive name to help identify the tachometer in
the XM Serial Configuration Utility software. Maximum 18 characters