Data Capture
65
DS2278 Digital Scanner
The DS2278 digital imager scanner scans both 1D and 2D bar codes and does not compromise
performance or features.
Figure 33 DS2278 Digital Scanner
Refer to the DS22788 Digital Scanner Product Reference Guide for more information.
Scanning Considerations
Typically, scanning is a simple matter of aim, scan, and decode, with a few quick trial efforts to master it.
However, consider the following to optimize scanning performance:
•Range
Scanners decode best over a particular working range — minimum and maximum distances from the
barcode. This range varies according to barcode density and scanning device optics. Scan within range
for 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 barcodes being scanned.
• Angle
Scanning angle is important for quick decodes. When the illumination/flash reflects directly back into
the imager, the specular reflection can blind/saturate the imager. To avoid this, scan the barcode so
that the beam does not bounce directly back. Do not 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 device farther away for larger symbols.
• Move the device closer for symbols with bars that are close together.
NOTE: Scanning procedures depend on the app and device configuration. An app may use different
scanning procedures from the one listed above.
To Next Page
Loading...
Need help?
General
