Flintec DAS 72.1 User Manual
Page 39
Mode 1 Characteristic (FIR-Filter)
FL
Settling time to
0.1%
(ms)
3 dB Cut-off
(Hz)
20 dB damping
at frequency
(Hz)
40 dB damping
at frequency
(Hz)
Damping in the
stopband
(dB)
Stopband
(Hz)
Output rate
max.
(samples/s)
0
no filtering
**
600
1
47
19.7
48
64
>90
>80
600
2
93
9.8
24
32
>90
>40
300
3
140
6.5
16
21
>90
>26
200
4
187
4.9
12
16
>90
>20
150
5
233
3.9
10
13
>90
>16
120
6
280
3.2
8
11
>90
>13
100
7
327
2.8
7
9
>90
>11
85.7
8
373
2.5
6
8
>90
>10
75
** Antialiasing filter 17 Hz @ 60 dB/decade
Attention:
In mode 1 the output rate is dependant on the selected filter level (FL).
UR
Set the update rate (average building)
This command will define over how many measurements, from the preceeding IIR or FIR filter, an average
will be calculated. The average will be calculated over 2
UR
samples. Permitted values 0...7 (see table below)
UR
0
1
2
3
4
5
6
7
number of samples
1
2
4
8
16
32
64
128
Check / adjustment update rate:
Master ( PC / PLC ) sends
LDU XX.X responds
Result
UR
¿
U+0001
Request: average over 2 samples
UR_4
¿
OK
Setting: average over 16 samples
Factory default: 0 [no average, = 600 samples/s]
Remark to Mode 1
Dependency Output Rate - averaging UR - Filter FL
UR
Output Rate samples/s
FL 0
FL 1
19.7 Hz
FL 2
9.8 Hz
FL 3
6.5 Hz
FL 4
4.9 Hz
FL 5
3.9 Hz
FL 6
3.2 Hz
FL 7
2.8 Hz
FL 8
2.5 Hz
0
600
600
300
200
150
120
100
85.7
75
1
300
300
150
100
75
60
50
42.85
37.5
2
150
150
75
50
37,5
30
25
21.42
18.75
3
75
75
37.5
25
18.75
15
12.5
10.71
9.38
4
37.5
37.5
18.75
12.5
9.38
7.5
6.25
5.36
4.69
5
18.75
18.75
9.38
6.25
4.69
3.75
3.13
2.68
2.34
6
9.38
9.38
4.69
3.13
2.34
1.88
1.56
1.34
1.17
7
4.69
4.69
2.34
1.56
1.17
0.94
0.78
0.67
0.59
Manual DAS 72.1
Page 39