Data Capture
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Figure 71 DS3678 Digital Scanner
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.
Barcode Capture with Imager
To capture barcode data:
1. Ensure that an application is open on the device and a text field is in focus (text cursor in text field).
2. Point the top of the device at a barcode.
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