Code 128
Product Reference Guide 233
Code 128 Decoding Level
Decoding Levels are used to configure a barcode symbology decoder to be very aggressive to
very conservative depending on a particular customer’s needs.
• Choosing Level 1 results in a very conservative decoder at the expe
nse of not being
able to
read poorly printed or damaged labels.
• Choosing Level 5 results in a very aggressive decoder.
This aggressive behavior allows
decoding of poorly printed and damaged labels at the expense of increasing the likelihood
of decoding errors.
• Choosing Level 3, which is the default setting, allows t
he majority of product labels to be
decoded.
There are many factors that determine when to change the
decoding level for a particular
symbology. These factors include spots, voids, non-uniform bar/space widths, damaged labels,
etc. that may be experienced in some barcode labels. If there are many hard to read or damaged
labels that cannot be decoded using a conservative setting, increase the decoding level to be
more aggressive. If the majority of labels are very good quality labels, or there is a need to
decrease the possibility of a decoder error, lower the decoding level to a more conservative level.
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