C2R 30-005, User Manual

Page: 53 / 183

Colibri serie 6 : User’s guide
© 2000-2012 C2R Technologie, Sarl. All rights reserved
53
Rev. A
Decode Search Mode
There are three selectable decode (scanning) modes:
Full Omni directional - Searches for bar code features beginning at the center of an image,
and searches to the image’s limits. This mode reads all symbologies (including OCR), in any
orientation. The Full Omni directional search is very thorough which may slow performance
time.
Note:
This search mode is the default setting for the 2D OEM Engines.
Quick Omni directional - This is an abbreviated search for bar code features around the
center region of an image. This mode quickly reads all symbologies in any orientation. The
Quick Omni directional mode may miss some off-center symbols, as well as larger Data Matrix
and QR Code symbols.
Advanced Linear Decoding - Performs quick horizontal linear scans in a center band of the
image. This mode is not unidirectional, but does quickly read linear and stacked bar codes.
Advanced Linear Decoding cannot read 2D, OCR, or Postal symbols.
Note:
This search mode is the default setting for the point-and-shoot PDF OEM Engines.
Preferred Symbology
Note: This selection does not apply to OCR.
The imager can be programmed to specify one symbology as a higher priority over other
symbologies in situations where both barcode symbologies appear on the same label, but the
lower priority symbology cannot be disabled.
For example, you may be using the imager in a retail setting to read UPC symbols, but have
occasional need to read a code on a drivers license. Since some licenses have a Code 39
symbol as well as the PDF417 symbol, you can use Preferred Symbology to specify that the
PDF417 symbol be read instead of the Code 39.
Preferred Symbology classifies each symbology as
high priority , low priority , or as an
unspecified type . When a low priority symbology is presented, the imager ignores it for a set
period of time (see Preferred Symbology Time-out) while it searches for the high priority
symbology. If a high priority symbology is located during this period, then that data is read
immediately.