MICRO-EPSILON optoNCDT 2300 - Page 61

Page 61
Control Menu, Set Sensor Parameter
optoNCDT 2300
Mode:
Each new measurement value is added and the first (oldest) measurement value from the averaging process (from the window) taken
out again. This results in short transient recovery times for jumps in measurement values.
Example with N = 4
... 0, 1, 2, 2, 1, 3
2, 2, 1, 3
4
= M (n)
gl
... 1, 2, 2, 1, 3, 4
2, 1, 3, 4
4
= M (n+1)
gl
Measurement values
Output value
Characteristics:
When moving averaging in the optoNCDT 2300 only powers of 2 for the averaging number N are allowed.
Range of values for number of average N is 1 / 2 / 4 / 8 ... 128.
Recursive Average
Formula:
MV + (N-1) x
(n)
M
rek (n-1)
N
M (n) =
rek
MV = Measurement value,
N = Averaging number,
n = Measurement value index
M
rek
= Averaging value respectively output value
Mode:
Each new measurement value MV(n) is added, as a weighted value, to the sum of the previous measurement values M
rek
(n-1).
Characteristics:
The recursive average permits a high degree of smoothing of the measurement values. However, it requires extremely long transient
recovery times for steps in measurement values. The recursive average shows low pass behavior. Range of values for number of aver-
age N is 1 ... 32768.