KEYENCE SR-750 Series - Manual (Page 4)

4 SR-750_AFM_E
* The evaluation of GS1 DataBar Limited (including CC-A/CC-B) is dependent on
the main unit setting.
Japanese Pharmaceutical Code quality verification
(PDF417, MicroPDF)
Minimum edge contrast
MINE
(Minimum Edge Contrast)
Description
Minimum value of reflectance gap between
space (including the quiet zone) and an
adjacent bar
- Calculation
formula
EC = Rs - Rb
ECmin = Min(EC)
Rs : Reflectance of space
Rb : Reflectance of space
Criterion
A : ECmin ≥ 15%
F : ECmin < 15%
Modulation MOD (Modulation)
Description
Ratio between the minimum edge contrast and
the symbol contrast
-
Calculation
formula
MOD = ECmin / SC
Criterion
A : MOD ≥ 0.70
B : MOD ≥ 0.60
C : MOD ≥ 0.50
D : MOD ≥ 0.40
F : MOD < 0.40
Minimum quiet zone QZ (Quiet Zone)
Description
Evaluates whether the quiet zone width
conforms to the standards.
-
Calculation
formula
-
Criterion
A : Satisfied
F : Not satisfied
Decodability DCD (Decodability)
Description
Decode margin is dependent on the code type
Evaluates the level of error between the ideal
line width pattern and the actual line width
pattern.
-
Calculation
formula
-
Criterion -
Defects DEF (Defects)
Description Evaluates color unevenness in an element.
-
Calculation
formula
Defects = ERNmax / SC
ERN = (Gap between the maximum and
minimum values of reflectance in an element),
ERNmax = Max (ERN)
Criterion
A : Defects ≤ 0.15
B : Defects ≤ 0.20
C : Defects ≤ 0.25
D : Defects ≤ 0.30
F : Defects > 0.30
Decode success/failure DEC(Decode)
Description Evaluates whether decoding is possible or not.
-
Calculation
formula
-
Criterion
A : Success
F : Failure
Number of edges EDGE (EdgeDetermination)
Description
Determines whether the read number of edges
is equal to the assumed number of edges.
-
Calculation
formula
-
Criterion
A : Match
F : Mismatch
Symbol contrast SC (Symbol Contrast)
Description
Evaluates the difference between the
maximum brightness value (Rmax) and
minimum brightness value (Rmin) in the code
area.
-
Calculation
formula
SC = Rmax – Rmin
Criterion
A : SC ≥ 70 %
B : SC ≥ 55 %
C : SC ≥ 40 %
D : SC ≥ 20 %
F : SC < 20 %
Minimum reflectance
MINR
(Minimum Reflectance)
Description
Minimum reflectance among scanned
waveforms
-
Calculation
formula
-
Criterion
A : Rmin ≤ 0.5 Rmax
F : Rmin > 0.5 Rmax
Minimum edge contrast
MINE
(Minimum Edge Contrast)
Description
Minimum value of reflectance gap between
space (including the quiet zone) and an
adjacent bar
- Calculation
formula
EC = Rs – Rb
ECmin = Min(EC)
Rs : Reflectance of space
Rb : Reflectance of space
Criterion
A : ECmin ≥ 15%
F : ECmin < 15%
Modulation MOD (Modulation)
Description
Ratio between the minimum edge contrast and
the symbol contrast
-
Calculation
formula
MOD = ECmin / SC
Criterion
A : MOD ≥ 0.70
B : MOD ≥ 0.60
C : MOD ≥ 0.50
D : MOD ≥ 0.40
F : MOD < 0.40
Minimum quiet zone QZ (Quiet Zone)
Description
Evaluates whether the quiet zone width
satisfies the standards.
-
Calculation
formula
-
Criterion
A : Satisfied
F : Not satisfied
Decodability DCD (Decodability)
Description
Decode margin dependent on the code type
Evaluates the level of error between the ideal
line width pattern and the actual line width
pattern.
-
Calculation
formula
-
Criterion -
Defects DEF(Defects)
Description Evaluates color unevenness in an element.
-
Calculation
formula
Defects = ERNmax / SC
ERN = (Gap between the maximum and
minimum values of reflectance in an element),
ERNmax = Max (ERN)
Criterion
A : Defects ≤ 0.15
B : Defects ≤ 0.20
C : Defects ≤ 0.25
D : Defects ≤ 0.30
F : Defects > 0.30
Effective codeword ratio CY(Codeword Yield)
Description Ratio of successfully read codewords
-
Calculation
formula
-
Criterion
A : CY ≥ 71%
B : CY ≥ 64%
C : CY ≥ 57%
D : CY ≥ 50%
F : CY < 50%
Codeword print quality
CPQ
(Codeword Print Quality)
Description Evaluates the print quality of codewords.
-
Calculation
formula
-
Criterion -