FSG/MTM/001 060511
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The Camera Housing can be tilted slightly up and down to position the scanline in the
“vertical” direction by turning the Vertical Positioning Wheel. All cameras but one have a
small Camera Motor, which via the Vertical Alignment Arm, may turn the Vertical
Positioning Wheel.
The Camera Motor is controlled by Scanner Maintenance or SCANtest 6 software for
automatic Vertical Alignment of the cameras.
Focus
The CCD-Camera is focused by loosening the Focus Lock Ring / Lock Screw and turning the
Lens Adapter to get the maximal amplitude of the image of the Focus Pattern.
The Lens itself is mounted in the Lens Adapter, and three Allen screws secure its position in
the adapter. When these screws are loosened, the lens can be rotated to have the dot on the
lens pointing upwards. This is the “best position” as determined by the lens manufacturer.
This “best position” is not critical, and when doing field adjustments it will hardly ever be
necessary to change the factory set position of the Lens.
On early models of COUGAR and CHAMELEON the Lens Adapter is secured by means of a
Focus Lock Ring.
On later models, slots in the Camera Housing allow the tube of the Camera Housing to be
tightened around the Lens Adapter by means of a Focus Lock Screw, see Fig. 4-1, page 82.
The slots are covered by a flexible Covering Tape to prevent stray light from entering the
camera.
Scan-Width
The Scan-Width depends on the distance between the CCD-Camera and the scan-area. It can
be adjusted by loosening the three Camera Fixing Screws and turning the Scan Width
Adjustment Screw to slide the CCD-Camera back and forth to get the required number of
Scan-Width Units within the field of vision, see Scan-Width Pattern, Fig. 4-45, page 122.
The scaling accuracy of the scanner depends directly on the accuracy of the Scan-Width
adjustment.
Vertical Positioning of CCD-Cameras
To set the basic Vertical Position of all cameras, the lock screw of the Vertical Alignment
Arm on the adjustable cameras are loosened and the Vertical Positioning Wheel adjusted to
get 8 Black Lines of the Vertical Position Pattern, see Fig. 4-45, page 122.
The Vertical Alignment Arm should now be positioned in parallel with the Back Plate of the
camera. The Vertical Alignment Arm may be turned by the Camera Motor using:
SCANtest 6, Test 9, Camera Motor
Select Camera
Press Forward (1), to move the arm away from the Back Plate.
Press Reverse (2), to move the arm towards the Back Plate.
Or, alternatively, the Vertical Alignment Arm may be turned by dismantling the Camera
Motor and turning the pulley of the spindle by hand, see
Fig. 4-44, page 121.
Tighten the lock screw when the Vertical Alignment Arm is parallel with he Back Plate.
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