Datalogic A20 Manuel Page 484

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How the Code Reader Tool Works Impact Reference Guide
Datalogic Automation Inc. 6-42
Bar code symbol quality assessment is based on an analysis of the Scan Reflectance profiles. The scan
reflectance profile is a record of the Reflectance values measured on a single line across the entire width of
the barcode.
Symbol Quality grading is used to derive a relative measure of symbol quality under the measurement con-
ditions used. Each scan reflectance profile is analyzed and a grade on a descending scale of integers from
four to zero is allocated to each of the parameters evaluated.
The Scan Reflectance Profile Grade is the lowest grade of the following:
Decode
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