PX940 User Guide 55
2D Barcode, DataMatrix Overall Parameters
Content Description
R Max The highest reflectance in any element or quiet zone in a scan reflectance profile, or the
highest reflectance of any sample area in a two-dimensional matrix symbol.
Example:
<RMax>86.6%</RMax>
R Min The lowest reflectance in any element in a scan reflectance profile, or the lowest
reflectance of any sample are in a two-dimensional matrix symbol.
Example:
<RMin>16.8%</RMin>
Symbol Contrast The difference between the highest and lowest reflectance values in a scan reflectance
profile.
Example:
<SymbolContrast Grade="4.0">69.8%</SymbolContrast>
Modulation A measure of the uniformity of reflectance of the dark and light modules, respectively.
Example:
<Modulation Grade="4.0"/>
Decode Decodable symbols shall comply with the symbology specification. Value in grade
Example:
<Decode Grade="4.0"/>
Axial
Nonuniformity
Measures the grades and spacing of the mapping centers (sampling points) or
intersections of the grid and tests for uneven scaling of the symbol.
Example:
<AxialNonuniformity Grade="4.0">1.9%</AxialNonuniformity>
Grid
Nonuniformity
Measures and grades the largest vector deviation of the grid intersections.
Example:
<GridNonuniformity Grade="4.0">5.4%</GridNonuniformity>
Unused Error
Correction
Tests the extent to which regional or spot damage in the symbol has eroded the reading
safety margin that error correction provides.
Example:
<UnusedEC Grade="4.0">100.0%</UnusedEC>
Fixed Pattern
Damage
Tests the damage to the finder pattern, quiet zone timing, navigation, and other fixed
patterns.
Example:
<FixedPatternDamage Grade="4.0"/>
L1 (left of L
finder)
L1 in grade
Example:
<L1 Grade="4.0"/>
L2 (bottom of L
finder)
L2 in grade
Example:
<L1 Grade="4.0"/>
QZL1 (left quiet
zone)
QZL1 in grade
Example:
<QZL1 Grade="4.0"/>
QZL2 (bottom
quiet zone)
QZL2 in grade
Example:
<QZL2 Grade="4.0"/>
OCTASA (overall
clock track and
solid area)
OCTASA in grade
Example:
<OCTASA Grade="4.0"/>
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