Symbologies 11 - 71
GS1 DataBar Limited Margin Check
Parameter #
728
SSI #
F1h D8h
The decoder offers four levels of margin check for GS1 DataBar Limited bar codes. There is an inverse relationship
between level of margin check and decoder aggressiveness. Increasing the level of margin check may result in
reduced aggressiveness in scanning, so only choose the level of margin check necessary.
• Level 1: No clear margin required. This complies with the original GS1 standard, yet might result in erroneous
decoding of the DataBar Limited bar code when scanning some UPC symbols that start with the digits 9 and
7.
• Level 2: Automatic risk detection. This level of security may result in erroneous decoding of DataBar Limited
bar codes when scanning some UPC symbols. If a misdecode is detected, the decoder operates in Level 3 or
Level 1.
• Level 3: Margin check level reflects newly proposed GS1 standard that requires a 5x trailing clear margin.
• Level 4: Margin check level extends beyond the standard required by GS1. This level of security requires a
5x leading and trailing clear margin.
GS1 DataBar Limited Margin Check Level 1
(1)
GS1 DataBar Limited Margin Check Level 2
(2)
*GS1 DataBar Limited Margin Check Level 3
(3)
GS1 DataBar Limited Margin Check Level 4
(4)
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