Datalogic Touch 90 pro, Руководство по продукции

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References Symbologies
278 Touch TD1100
Symbologies
Decoding Levels
Decoding Levels are used to configure a bar code 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 expense 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 the 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 bar code 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.
Set Length
Length Control allows you to select either variable length decoding or fixed length decoding for
the specified symbology.
Variable Length: For variable length decoding, a minimum and maximum length may be set.
Fixed Length: For fixed length decoding, two different lengths may be set.
Set Length 1
This feature specifies one of the bar code lengths for a given symbology. Length 1 is the
minimum label length if in Variable Length Mode, or the first fixed length if in Fixed Length
Mode.
Reference the
Symbologies
section to view the selectable range (number of characters) for the
symbology being set.
Follow these instructions to set this feature:
1. Determine the desired character length. Pad the number with leading zeroes to yield two
digits. For example: 0 = 00, 5 = 05, 20 = 20, etc.
2. Scan the ENTER/EXIT PROGRAMMING MODE bar code to enter Programming
Mode.
3. Scan the “Select Length 1 Setting” for the symbology being set.