GRAPHTEC CS500 Series Service Manual page 91

Tips for Making Fine Adjustments
• Two portions of the aligned image become misaligned during adjustments using the crosshairs cursor.
• You wish to move a portion of the image by one pixel.
• You find it difficult to find whether any portions of the image are misaligned.
• You feel that some portions of the image remain misaligned, despite efforts to correct the alignment.
In these cases, simply type in numbers to make adjustments.
In this section, we will give you a rough idea of what the numbers in the dialog box mean.
Once you become familiar with the meanings of these numbers and know which numbers to type in, you can
make adjustments more accurately and quickly than by using the crosshairs cursor.
Description of the Dialog Box
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(1) (2): Origin (Upper Left of Document)
The upper left corner of the scanner image currently being displayed is always set to (0, 0).
The coordinates increase as you move across and down from this point.
(3) (4): X Overlap
These boxes show the numbers of pixels by which sensor 1 and 2 (2 and 3, 3 and 4, 4 and 5) images
overlap. For more overlap, increase these numbers. Reduce these numbers if some portions of images are
missing due to excessive overlap to enable accurate fine adjustments.
<<Handy Tip>> Theoretically, distance accuracy in the direction of sensors (in the X direction) cannot
be corrected, since it is determined based on the calibration and quality of the individual
sensors. However, using the overlaps will make the image appear to be corrected.
In general, use the size change function of the application software to make this adjustment.
If your customer requests extreme accuracy and if the size change function does not
produce satisfactory results, you may resort to this technique.
In contrast, if the overlaps are not properly adjusted, the product specifications may not
be satisfied. Check these values if you receive complaints regarding accuracy in the X
direction.
CS500/IS200-UM-251-9370
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(4) (1) (2)
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10. ADJUSTMENTS USING THE SOFTWARE
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