Sweep scanning
To perform a sweep scan, move (sweep) the product, with the bar code facing the
front window, laterally through the scan volume. AsFigure 5-2 shows, the scan
volume for fixed scanning extends about 23 cm (9 inches) in front of the scan
window.
Scan volume
Rear scan window
Front scan window
Scan depth
23cm 9inches
(
)
Scan depth
23 cm 9 inches
(
)
Figure
5-2. Scan volume and scan depth
The optimal scanning distance is at the center of the scan volume, or about 11 cm
(4.5 inches) from the window.
Figure 5-3 shows the motion of an item swept past the front scan window.
Front scan window
Bar code
Figure 5-3. Sweep scanning
5-4
IBM 4685-L0D Scanner:
Setup, Operation, and Service Guide
Содержание 4685-L0D
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