FSG/MTM/001 060511
95
CHROMA Tx 40, CRYSTAL Tx 40
COUGAR Tx 36, CHAMELEON Tx 36,
PREMIER Tx 36
MAGNUM XL 54 6779D228 3.3/ lp/mm
Loosen the Focus Lock Ring / Lock Screw (see Fig. 4-1) and turn the Lens Adapter to get
maximum amplitude of the Focus signal (approximately 5 division peak-to-peak).
The amplitude of the Focus signal (Corrected) should be even within:
Min/Max > 0.7 for each separate camera.
Min/Max > 0.8 at the transition between adjacent cameras (measured at the position
of the image of the Stitching Wire, see Detail View on page 96).
If the dot does not point in upwards direction after focusing (indicating the ‘best position’ of
the Lens):
Mark the upward direction on the Lens Adapter
Loosen the Focus Lock Ring / Lock Screw
Turn the Lens Adapter and loosen the Lens Fixing Screws
Rotate the lens to align the dot with the upward mark on the Lens Adapter
Tighten the Lens Fixing Screws (do not over-tighten)
Turn the Lens Adapter to readjust the Focus and tighten the Focus Lock Ring / Lock Screw to
secure the Focus setting.
Interaction
The Focus adjustment has a big influence on the Scan-Width adjustment. Therefore the Scan-
Width must be checked and readjusted if necessary when the Focus adjustment has been
changed. On the other hand, the Focus adjustment is relative tolerant to changes in the Scan-
Width adjustment and as a rule of thumb, the Scan-Width adjustment can be changed ±1
SWU without the need for re-focusing.
When all camera adjustments have been completed, run Scanner Maintenance.
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