Function description
Operating Manual PSSu E S 2AI I se(-T)
21417-EN-04
16
4.3.1.3
Manufacturer scaling
The manufacturer scaling is used to define the offset (zero point compensation) and gain
(amplification) of the digital signal.
Manufacturer scaling active (default setting)
}
Default values for manufacturer scaling:
– Offset (b
1
): 0
– Gain (a
1
): 8194
D
(2002
H
)
INFORMATION
The default setting for gain (
a
1
) means an amplification factor of 8.
The digital value after manufacturer scaling is calculated using the following for-
mula:
}
y = (a
1
/ 1024
D
* x) + b
1
or
}
y = (a
1
/ 400
H
* x) + b
1
Legend:
}
y
: Digital value after manufacturer scaling
}
x
: Digital value before manufacturer scaling
}
a
1
: Gain
}
b
1
: Offset
}
a
1
/ 1024
D
: Amplification factor
INFORMATION
With the given amplification factor, gain (
a
1
) is calculated as follows:
Gain (
a
1
) = Amplification factor * 1024
D
Amplification by 5 % is therefore:
1.05 * 1024
D
= 1075
D
Arithmetic examples using decimal values:
Digital value
before manu-
facturer scaling
(x)
Gain (a
1
)
Offset (b
1
)
Amplification
factor (a
1
/
1024
D
)
Value after
manufacturer
scaling (y)
1 000
1 024
0
1
1 000
1 000
2 048
0
2
2 000
1 000
8 192
0
8
8 000
1 000
1 075
500
1.05
1 550
1 000
512
-50
0.5
450
