134 Xenon/Granit User Guide
Preferred Symbology
The scanner can be programmed to specify one symbology as a higher priority over
other symbologies in situations where both bar code symbologies appear on the
same label, but the lower priority symbology cannot be disabled.
For example, you may be using the scanner in a retail setting to read U.P.C. sym-
bols, 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 Pre-
ferred 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 scanner
ignores it for a set period of time (see Preferred Symbology Time-out on page 135)
while it searches for the high priority symbology. If a high priority symbology is
located during this period, then that data is read immediately.
If the time-out period expires before a high priority symbology is read, the scanner
will read any bar code in its view (low priority or unspecified). If there is no bar code
in the scanner’s view after the time-out period expires, then no data is reported.
Note: A low priority symbol must be centered on the aiming pattern to be read.
Scan a bar code below to enable or disable Preferred Symbology. Default = Pre-
ferred Symbology Off.
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