Symbol Contrast; Overall Grade; Ecmin - Printronix Auto ID T8204 User Manual

EC Min
This menu item sets the minimum edge contrast, which is the worst edge
transition (bar to space or space to bar) used by the ODV-2D for pass/fail
threshold during the analysis of bar codes. Bar codes with an edge contrast
below this threshold will fail. The higher the value, the stricter the criterion.
BARCODES
Minimum
Maximum
Factory Default
IMPORTANT
RMin
This menu item sets the minimum reflectance value used by the ODV-2D for
pass/fail threshold used during the analysis of bar codes. A bar code will fail
if all the bar reflectance values are above the percentage of space reflec-
tance set by this threshold. For example, an Rmin setting of 50% requires
that at least one bar reflectance value fall under the midpoint of the reflec-
tance value read for the highest space reflectance.
BARCODES
Minimum
Maximum
Factory Default
IMPORTANT

Symbol Contrast

Symbol Contrast represents the contrast between the bars and spaces in the
bar code used by the validator for pass/fail threshold used during the analy-
sis of bar codes. The bar code must have a certain level of contrast to be
recognized by the ODV-2D. Bar codes with a symbol contrast below the
threshold will fail. The higher the value, the stricter the criterion for passing.
BARCODES
Minimum
Maximum
Factory Default
IMPORTANT
ODV-2D > Grading > EC Min
All 1D, PDF417
0%
100%
15%
Factors into the Overall Grade (page 26).
ODV-2D > Grading > RMin
All 1D, PDF417
0%
100%
50%
Factors into the Overall Grade (page 26).
ODV-2D > Grading > Symbol Contrast
All
0%
100%
0%
Factors into the Overall Grade (page 26).
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