Datalogic Matrix 400, Manual, Page: 44 / 86

MATRIX 400™ CODE QUALITY VERIFIER SOLUTION
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Axial Non-Uniformity (ANU)
Measures and grades the squareness of all modules in the direction of each of the symbol’s
major axes (X-axis and Y-axis) by applying the decode algorithm to the binarized image.
Cell Contrast (CC)
Measures and grades the difference between the means of brightest and darkest values of
the symbol (instead of determining differences between the brightest and darkest values).
Cell Modulation (CM)
Cell modulation analyzes the grid center points within the data region to determine the
reflectance uniformity of light and dark elements after considering the amount of error
correction available in the code.
Decode
This parameter tests, on a Pass/Fail basis, whether the symbol has all its features sufficiently
correct. If the image cannot be decoded using the symbology reference decode algorithm,
then it shall receive the failing grade 0. Otherwise, it shall receive the grade 4.
Fixed Pattern Damage (FPD)
This metric is similar to Cell Modulation, but it analyzes the finder pattern and clock pattern
as well as the quiet zone around the code instead of the data region.
Y
X
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