BST CCD CAM 100 - Page 147

Operation
9
CCD CAM 100 – Installation and Operating Manual 147/198
Figure 1: Starting situation
Installation
position
CCD camera 1:
Standard
Installation
position
CCD camera 2:
Standard
Display
Web of material
Display
bright
dark
first bright/dark
contrast transition
Video curve
first dark/bright
contrast transition
Scan direction Right >> Scan direction Right >>
Edge 1 Edge 2
Both cameras are mounted in the standard installation position
and scan the web of material from left to right (scan direction
Right >>). This results in the allocation of the edges 1 and 2 shown
in the figure.
Figure 2: CCD camera 2 is turned by 180°
Installation
position
CCD camera 1:
Standard
Installation
position
CCD camera 2:
Turned by 180°
Display
Web of material
Display
bright
dark
first bright/dark
contrast transition
Video curve
first dark/bright
contrast transition
Scan direction Right >> Scan direction Left <<
Edge 1 Edge 2
Camera 2 is mounted turned by 180°. With unchanged scan
direction it would now scan the web of material from right to left.
In order to prevent the allocation of the edges from changing, the
scan direction of camera 2 must be set to Left <<. After this
change camera 2 scans the web of material from left to right
again. The allocation of the edges 1 and 2 remains unchanged (as
in the start situation) although camera 2 has been turned.