Code 39
Product Reference Guide 215
Code 39 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
r
ead poorly printed or damaged labels.
• Choosing Level 5 results in a very aggressive decoder. T
his 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 th
e majority of product labels to be
decoded.
There are many factors that determine when to change the d
ecoding 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.
NOTE
This configuration item applies to Code 39 and Code 32.
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