Scanning Considerations; Imager Scanning - Symbol TC70 User Manual

82 | Data Capture
Figure 67: RS507 Hands-Free Imager
See to the RS507 Hands-free Imager 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 TC70 farther away for larger symbols
• Move the TC70 closer for symbols with bars that are close together.
Note: Scanning procedures depend on the application and TC70 configuration. An application may use
different scanning procedures from the one listed above.

Imager Scanning

To read a bar code, a scan-enabled application is required. The TC70 contains the DataWedge application that allows
the user to enable the imager, decode the bar code data and display the bar code content.
Procedure:
1 Ensure that an application is open on the TC70 and a text field is in focus (text cursor in text field).
2 Point the exit window on the top of the TC70 at a bar code.
October 2014 | MN001120A01-A