User Manual

SYMBOLOGIES 8 - 69
GS1 DataBar Limited Margin Check
Parameter # 728
The scanner offers four levels of decode security for GS1 DataBar Limited bar codes. There is an inverse
relationship between the level of margin check and scanner aggressiveness. Increasing the level of margin
check can reduce scanning aggressiveness, so choose only the level necessary.
• Margin Check Level 1: No clear margin required. This complies with the original GS1 standard, yet can
result in erroneous decoding of a DataBar Limited bar code when scanning some UPC symbols that start
with digits 9 and 7.
• Margin Check Level 2: Automatic risk detection. This level of margin check can result in erroneous
decoding of DataBar Limited bar codes when scanning some UPC symbols. If a misdecode is detected,
the scanner operates in Level 3 or Level 1.
• Margin Check Level 3: Margin check level reflects newly proposed GS1 standard that requires a five
times trailing clear margin.
• Margin Check Level 4: Margin check level extends beyond the standard required by GS1. This level of
margin check requires a five times leading and trailing clear margin.
NOTE This parameter applies only to scanners branded with a silver logo .
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)