Table of Contents
Advertisement
If the full input range is greater than the range used in the linearisation tables then the signal
will carry on following the slope of the last two inputs. For example if we had a -50 to +50V
range and just used the 0 to 10V linearisation table then the signal would look like
4.4.
43-TV-25-35 GLO Iss.4 Dec 06 UK
A5E01001767-04
Figure 4.4 Linearisation table used for part of the range
50
40
30
20
10
Y (Eng.
0
Units)
-10
-20
-30
-40
-50
-50 -40 -30 -20 -10 0 10 20 30 40 50
The last two points are used to follow the slope for the rest of the signal.
At the bottom of the 0-10V table the last two inputs are X=0, Y=0 and X=2, Y=6.
At the top of the 0-10V table the last two points are X=8, Y=9.8 and X=10, Y=10.
Figure 4.4
shows these last two inputs at the top and bottom of the 0-10V signal.
Power up
X ( Signal
Input)
Figure
61
Advertisement
Table of Contents
