Stabilizing the measurement by filtering, Stabilizing the measurement by, Filtering -22 – KEYENCE LK-G Series User Manual
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3-22
3
LK-G-M-NO3-E
3 Function Settings
Stabilizing the Measurement by Filtering
The following three types of function can be set for the filter.
■
Averaging function
Performs moving-average of the measurement value within the range of 1 to 262144 times.
The following is the example of the process when an averaging value of four is set.
The sampling rate, measurement time for averaging, and refresh rate vary depending on the
settings.
Function No.
Filter name
Function
[-0
AvG
Average
Performs moving-average of the measurement value.
Sets the number of times of averaging.
[-1
LPF
Low-pass filter
Cuts extreme changes and only captures moderate
fluctuations. Set the cutoff frequency.
[-2
kPF
High-pass filter
Cuts moderate fluctuations and only captures extreme
changes.
Set the cutoff frequency.
Refer to "Response Delay Time" (6-17 page).
Refresh
rate
A
Refresh
rate
B
C
1
Sampling rate
Output data
1
4
2
3
4
5
6
7
2
5
3
6
Measurement time
for averaging
Measurement time
for averaging
Measurement time
for averaging
Internal data
Outputs data A by averaging data to .
Outputs data B by averaging data to .
Outputs data C by averaging data to .
Reference