User's Manual

CHAPTER 5 WIRELESS LAN
ALH-901X USER’S GUIDE
DOC. CONTROL #8102117-000 REV D
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Setting Barcode Symbology
There are many different barcode encoding standards, depending on the region and industry. You
must make sure that the barcode scanner is set to decode the types of barcodes that you expect to
encounter. Selecting too many symbologies can increase the time it takes to decode a barcode, or
result in the barcode being misinterpreted.
The Barcode demo application currently does not allow you to enable/disable each barcode
symbology, though this capability exists in the device APIs supplied with the Alien Handheld SDK.
There are other features of the barcode scanner, not exposed in the demonstration application,
such has bi-directional redundancy checks, and up to 4 levels of security verification on each scan.
Barcode Scanning Beam Position
Correct Scanning Beam Position
1. The smaller the size of the barcode, the closer the handheld needs to be. The effective
scanning range is 1.5-12 inches (40-300mm). If the unit fails to scan the barcode, adjust
the scan angle and distance.
2. The laser beam is a red thick line, when scanning a barcode.
Incorrect Scanning Beam Position
1. The laser beam must pass across the entire barcode.
2. It will not scan the barcode if the laser beam crosses only part of the barcode.
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