Reference Guide

Symbologies
284
GS1 DataBar Limited Margin Check
Parameter #
728 (SSI # F1h D8h)
The decoder offers four levels of margin check for GS1 DataBar Limited barcodes. 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 barcode 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 barcodes 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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