2 - 34 MC75 User Guide

Digital Camera
MC75 with an integrated digital camera have the following features:
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Omnidirectional reading of a variety of bar code symbologies, includ ing the most popular linear, postal,
PDF417, and 2D matrix code types.
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Advanced intuitive aiming for easy point-and-shoot operation.
The camera uses digital camera technology to take a digital picture of a bar code, stores th e resulting image in its
memory, and executes state-of-the-art software decoding algorithms to extract the data from the image.
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:
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Range
Any scanning device decodes well over a particular working range — mini mum and maximum distances from
the bar code. This range varies according to bar code density and scanning dev ice optics.
Scanning within range brings quick and constant decodes; scanning too close or to o far away prevents
decodes. Move the scanner closer and further away to find the right working r ange for the bar codes being
scanned.
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Angle
Scanning angle is important for promoting quick decodes. When laser beams re flect 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 sc an at too sharp
an angle; the scanner needs to collect scattered reflections from the sca n to make a successful decode.
Practice quickly shows what tolerances to work within.
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Hold the MC75 farther away for larger symbols.
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Move the MC75 closer for symbols with bars that are close together.
Linear Scanning
1. Ensure that a scan enabled application is loaded on the MC75.
2. Aim the scan window at the bar code.
NOTE Scanning procedures depend on the application and MC75 configuration. An application may use different
scanning procedures from the one listed above.