MATRIX 400™ CODE QUALITY VERIFIER SOLUTION
2
Dot Ovality
Evaluate the ovality of each dot by measuring the difference between its height (D) and width
(d) expressed as percentage differences from the nominal circle values. It is calculated only
for circular module shape.
Acceptable value: < = 20%.
Quiet Zone
Measures the Quiet Zone (margin) around the symbol. It shall be equal to or greater than 1
module size.
Symbol Contrast
Symbol Contrast measures the difference between light and dark symbol elements, and
between the Quiet Zone and the outer limit elements.
It is meaningful only for laser etching or electro chemical etching marking methods.
D
d
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