Rockwell Automation 1440-VLF02-01RA XM-121 Absolute Shaft Module - Manual (Page 58)

Publication GMSI10-UM014D-EN-P - May 2010
50 Configuration Parameters
Waveform Measurement Parameters
Use the waveform measurement parameters to set up the waveform
measurements. The waveform measurement parameters apply to both
channels.
Overall Damping Factor This parameter is used in conjunction with the
Overall Time Constant to vary the characteristics
of the response of the digital filter used in
calculating the Overall Value.
An overall value for a measurement with a damping
factor near 1.0 (critical damping) will slowly rise or
fall for the full settling time specified by the Overall
Time Constant before reaching the final value. An
overall value for a measurement with a damping
factor near 0.707 will rise or fall quickly and may
"overshoot" (measure a value greater or less than the
final value) before reaching the final value for a
given input signal.
Enter a value from 0.707 to 1.0.
Overall Measurement Parameters
Parameter Name Description Values/Comments
Waveform Measurement Parameters
Parameter Name Description Values/Comments
Number of Points The number of samples in the waveform
measurement. Options: 256
512
1024
2048
Waveform Period The total period of the waveform measurement. Seconds
FMAX (Hz) (XM Serial
Configuration Utility only) Displays the maximum frequency included in the
waveform measurement.