Data Capture 4 - 3
Figure 4-3 DS3678 Digital Scanner
Refer to the DS36X8 Digital Scanner Product Reference Guide for more information.
Scanning Considerations
Typically, scanning is a simple matter of aim, scan, and decode and a few quick trial efforts master it. However,
consider the following to optimize 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.
• 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 “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 sharp an angle; the scanner
needs to collect scattered reflections from the scan to make a successful decode. Practice quickly shows
what tolerances to work within.
• Hold the TC51 farther away for larger symbols
• Move the TC51 closer for symbols with bars that are close together.
Bar Code Scanning with Internal Imager
To read a bar code, a scan-enabled application is required. The TC51 contains the DataWedge application that
allows the user to enable the imager, decode the bar code data and display the bar code content.
1. Ensure that an application is open on the TC51 and a text field is in focus (text cursor in text field).
NOTE Scanning procedures depend on the application and TC51 configuration. An application may use different
scanning procedures from the one listed above.
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General
Weight and Dimensions
