SMAR CD600 Plus - Page 56

CD600 Plus - User's Manual
4.36
c) The Arithmetic Block may have the adjustable ratio connected to input C and [Q
A
] to input A.
If Bias
3
= G
2
= 0
2
1
1
8.0
Bias
Bias
G ⋅=
)
)100 +
BIAS
2
(0.4 =
BIAS
2
0.8
SP
BiasC
Bias
AGOUTPUT =
+
⋅⋅=
)(
)(
2
1
1
(9
For minimum ratio B = 0% and equation (7) is applied. Making (7) = (9).
)0(
)(][
][8.0
2
1
1
Bias
BiasQ
GQ
A
A
+
⋅
⋅=⋅
(10)
For maximum ratio C=100% and equation (8) is applied. Making (8) = (9).
)100(
)(
][][4.0
2
1
1
Bias
Bias
QGQ AA
+
⋅⋅=⋅
)100(
)(
4.0
2
1
1
Bias
Bias
G
+
=
⋅
(11)
Making G
1
= 1 and substituting (10) in (11):
BIAS
2
= 100
BIAS
1
= 80
Block configuration:
AGN1 = 1 ABS2 = -250
AGN2 = 0 ABS3 = 0
ABS1 = -200
TYPE MNEM DESCRIPTION RANGE DEFAULT
I LIA Input A 0
I LIB Input B 0
I LIC Input C 0
Addresses 0 to 170 /
225 to 240
I LID Input D 0
C AGN1 Gain G
1
-30.000 to +30.000 1.000
C AGN2 Gain G
2
-30.000 to +30.000 0.000
P ABS1 Bias 1 -300.00 to +300.00% 0.00%
P ABS2 Bias 2 -300.00 to +300.00% 100.00%
P ABS3 Bias 3 -300.00 to +300.00% 0.00%
Number of Bytes per Type of Parameter: A = 10 C = 0 L = 8