Image processing
4.2 Code verification
SIMATIC MV420 / SIMATIC MV440
54 Operating Instructions, 04/2013, A5E02371045-06
Assignment of the numeric grade of ISO/IEC 15415 to the quality levels
Grade (abbreviation) 4 3 2 1 0 Comment
Axial non-uniformity
(AN_)
≤0.06 ≤0.08 ≤0.10 ≤0.12 >0.12
Fixed pattern damage (FPD) This measurement is made in a three-stage process. There is no
direct correlation between the intermediate results and the quality
grade.
Grid non-uniformity (GN_)
≤0.38 ≤0.50 ≤0.63 ≤0.75 >0.75
Modulation (MOD) This measurement is made in a three-stage process. There is no
direct correlation between the intermediate results and the quality
grade.
Print growth
Reference only, no grading X and Y
Reference decode (RD_) pass fail
Symbol contrast (SC_)
≥0.70 ≥0.55 ≥0.40 ≥0.20 <0.20
Unused error correction (UEC) ≥0.62 ≥0.50 ≥0.37 ≥0.25 <0.25
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