HF131PEN_v0501_05
Page 19
7 - ANALOG OUTPUT (CONTINUED)
FILTER
77
This function is used to stabilize the analog output signal.
The output value is updated every 0.1 second. With the help of this digital
filter a more stable but less precise reading can be obtained.
The filter principal is based on three input values: the filter level (01-99),
the last analog output value and the last average value. The higher the
filter level, the longer the response time on a value change will be.
Below, several filter levels with their response times are indicated:
F
ILTER VALUE
R
ESPONSE TIME ON STEP CHANGE OF ANALOG VALUE
.
T
IME IN SECONDS
50%
INFLUENCE
75%
INFLUENCE
90%
INFLUENCE
99%
INFLUENCE
01
filter disabled
filter disabled
filter disabled
filter disabled
02
0.1 second
0.2 second
0.4 second
0.7 second
03
0.2 second
0.4 second
0.6 second
1.2 seconds
05
0.4 second
0.7 second
1.1 seconds
2.1 seconds
10
0.7 second
1.4 seconds
2.2 seconds
4.4 seconds
20
1.4 seconds
2.8 seconds
4.5 seconds
9.0 seconds
30
2.1 seconds
4 seconds
7 seconds
14 seconds
50
3.5 seconds
7 seconds
11 seconds
23 seconds
75
5.2 seconds
10 seconds
17 seconds
34 seconds
99
6.9 seconds
14 seconds
23 seconds
45 seconds
