Microscan HawkEye 1500 Series, Руководство по верификации

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Verification Types
Da
ta Matrix
Ve
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c
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3
v2.4.1, Nov 2008 HawkEye™ 1500 Series Verification Manual 3-5
• Border Match — A percentage of the border cells that match the pattern of
two sides solid and two sides alternating.
• Contrast — The difference in percent of the center of the distribution of the
light cells of the Data Matrix versus the center of the distribution of the dark
cells.
• Axial Nonuniformity — The difference between the height and the width
with respect to the rows and columns.
• Print Growth — The positive or negative size relation of the cells as printed
with respect to the ideal grid.
• Unused Error Correction — The amount of error correction that could be
read incorrectly when the code is still readable that is currently being read
correctly expressed as a percentage.
• Angle of Distortion — The difference from perpendicular of the two solid
edges of the Data Matrix measured in degrees.
ISO/IEC 16022:2000
This standard is based upon information relevant to the printing of Data Matrix
codes in black ink on white paper substrates and is typically only applicable to
those applications.
TABLE 3–1.
DPM Numeric Score to Grade Level Comparison
Grade
A
4 B
3 C
2 D
1 F
0
Comments
CS Cell Size >=10 >=9 >=7 >=5 <5 pixels
CO Center Offset <=2.5 <=5.0 <=7.5 <=10.0 >10.0 unitless
SO Size Offset <=2.5 <=5.0 <=7.5 <=10.0 >10.0 unitless
CM Cell Modulation >=90% >=80% >=70% >=60% <60%
BM Border Match >=95% >=90% >=85% >=80% <80%
AN Axial Nonuniformity <=6% <=8% <=10% <=12% >12%
PG Print Growth <=10% <=20% <=30% <=40% >40%
UEC Unused Error Correction >=62% >=50% >=37% >=25% <25% Code Words
in ECC 200
AD Angular Distortion <=2% <=4% <=6% <=7% >7%