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Series 68XX Product Reference Guide
Note: The procedure for your scanner may differ from the one given above.
Scanner use depends on the application.
Scanning Considerations
Usually, scanning is a simple matter of aim, scan, and decode, and a few quick trial efforts
master it simply and intuitively. However, two important considerations can optimize any
scanning technique — angle and range.
Angle
Scanning angle is important for promoting quick decodes. When laser beams reflect directly
back into the scanner from the bar code, this specular reflection can actually "blind" the
scanner.
To avoid this, scan the bar code so that the beam does not bounce directly back. But don't
scan at too oblique an angle; the scanner needs to collect scattered reflections from the scan
to make a successful decode (refer to
Figure
5-3). Practice quickly shows what tolerances to
work within.
Figure 5-3. Scanning Angle and Specular Reflection
5-12
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Troubleshooting
