Rockwell Automation 2755 AdaptaScan Software - Manual (Page 88)

6–6
Publication 2755-838
Quiet Zone Ratio
Specifies the ratio of the clear space before the first bar and after the
last bar to the narrow element width. Enter a value from 1 to 10, 7 is
the default. Symbology standards require a quiet zone ratio of 10.
However, the default of 7 allows for compensation of noncompliant
symbols.
The Reader uses the quiet zone to determine if adequate clear space
precedes and follows the symbol. Symbols without an adequate
quiet zone are ignored.
Clear
Space Clear
Space
Quiet Zone Ratio = 10
Width Clear Space
Width 1st Bar
Negative Image
When selected, only negative images of bar code symbols are
decoded. A negative image has white bars on a dark background.
Normal Code Negative Image
Symbols
Select: To:
New Open the Bar Code Label Symbol dialog to define a symbol.
Edit Open the Bar Code Label Symbol dialog for the highlighted
symbol definition.
Cut Cut the highlighted symbol definition to the clipboard.
Paste Move the symbol definition from the clipboard to the Bar Code
Label Symbol list. Select Paste multiple times to make copies
of the symbol definition.