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CHAPTER 3 DATA CAPTURE
Introduction
The wearable terminal can be used with the following optional data capture accessories:
•
RS309 laser scanner
•
RS409 laser scanner
•
RS419 laser scanner
•
RS507 Hands-free imager.
Laser Scanning
Wearable terminals with an optional RS309, RS409 or RS419 laser scanner have the following features:
•
Reading of a variety of bar code symbologies, including the most popular linear, postal, and 1D code
types.
•
Advanced intuitive laser aiming for easy point-and-shoot operation.
Scanning Considerations
Typically, scanning is a simple matter of aim, scan/decode and a few quick trial efforts master it. However, two
important considerations can be used to optimize any scanning performance:
•
Range
Any scanning device decodes well over a particular working range — minimum and maximum distances
from the bar code. This range varies according to bar code density and scanning device optics.
Scanning within range brings quick and constant decodes; scanning too close or too far away prevents
decodes. Move the scanner closer and further away to find the right working range for the bar codes being
scanned. However, the situation is complicated by the availability of various integrated scanning modules.
The best way to specify the appropriate working range per bar code density is through a chart called a
decode zone for each scan module. A decode zone simply plots working range as a function of minimum
element widths of bar code symbols.
•
Angle
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