IM 01C25R03-01E
A-1
APPENDIX 1. SIGNAL CHARACTERIZER (SC) BLOCK
APPENDIX 1. SIGNAL CHARACTERIZER (SC) BLOCK
The Signal Characterizer (SC) block is used to convert the values of input signals according to a line-segment
function. The line-segment function is created using 21 points of the X/Y coordinates specified by the user. This
function block can also be used as a transmission line for control signals and supports backward control.
Application
The Signal Characterizer block is primarily used if you wish for one of the following reasons to correct signals using
the coordinates rather than a computational expression:
• The computational expression for correction in relation to input signals is complex
• The relationship between input signals and the signals after correction is only empirically known
A1.1 Schematic Diagram of Signal Characterizer Block
The following shows the schematic diagram of the Signal Characterizer block.
OUT_1
OUT_2
x
y
x
y
Inverse
function
ON
OFF
OFF
ON
SWAP_2
IN_1
IN_2
FA0101.EPS
Figure A1.1 Signal Characterizer Block
Input/Output Parameters
IN_2
Inputs a signal desired to be corrected using a line-segment function.
(If SWAP_2 = off, it is substituted for X of the line-segment function.)
(If SWAP_2 = on, it is substituted for Y of the line-segment function.)
Inputs a signal desired to be corrected using a line-segment function.
(It is substituted for X of the line-segment function.)
IN_1
OUT_1
Outputs the result of the IN_1 input that has been corrected using the line-segment function.
(The function block outputs the value of Y corresponding to IN_1.)
OUT_2
Outputs the result of the IN_2 input that has been corrected using the line-segment function.
The output can also be approximated using the inverse function of the specified line-segment
function. (This is used for backward control.)
(If SWAP_2 = off, the value of Y corresponding to X of IN_1 is output.)
(If SWAP_2 = on, the value of X corresponding to Y of IN_1 is output.)
CURVE_X
The points of the curve determining inputs and outputs.
The x points of the curve are defined by an array of 1 to 21 points with a monotone increase.
"+INFINITY" is configured for unused point(s).
CURVE_Y
The points of the curve determining inputs and outputs.
The y points of the curve are defined by an array of 1 to 21 points.
If SWAP_2 = on, the elements of the curve are defined with a monotone increase or decrease.
"+INFINITY" is configured for unused point(s).
SWAP_2
Selector switch used to specify if an inverse function is used for the line-segment
approximation of IN_2 to OUT_2. The setting of SWAP_2 = on
(which uses the inverse function) is used for backward control.
TA0101.EPS
Input
Output
Others
