HBM WE2108 Serie Referenzhandbuch Seite 81

Scale electronic unit (NSW)
(Amplifier Signal Filter)
Selection of a digital filter, entry as decimal number from 0...7,
(Internal Conversion Rate)
Number of values for the moving average filter
The WE2108 uses a multistage filter chain for measured value smoothing:
•
•
•
Thus the required filter effect and output rate can be set through the two commands (ASF,
ICR).
Characteristic of the filter chain for ICR = 1:
WE2108
ASF
Command:
Parameter:
Range:
Factory setting:
Password protection: no
Parameter backup:
Query:
ICR
Command:
Parameter:
Range:
Factory setting:
Password protection: no
Parameter backup:
Query:
An analogue third order filter (cutoff frequency approx. 50 Hz)
Fast digital filter; cutoff frequency and output rate selectable through ASF
Moving mean value formation without sampling rate reduction (selectable through ICR,
sampling rate 28...50Hz according to ASF)
ASF Einschwingzeit in [ms] auf 0,1%
0 90
1 100
2 110
3 120
4 400
5 475
6 550
7 625
ASF(x);
1
0...7
3
with command TDD1
ASF?;
ICR(x);
1
0...99
2
with command TDD1
ICR?;
Grenzfrequenz [Hz] bei −3dB
13 Hz
12,5 Hz
11,2 Hz
7,5 Hz
3 Hz
2,5 Hz
2 Hz
1 Hz
81
Messrate [Hz]
50
50
50
50
50
40
33
28
HBM