RJS Inspector D4000 Auto Optic (FIRMWARE version A.06 and Later) - Manual (Page 82)

Appendix K Operator
’s Guide
RJS, Minneapolis, MN 002-5564
The material (paper, plastic, metal, etc.) upon which
a bar code symbol is
“printed” or reproduced.
Symbol
See Bar code symbol.
Symbol Contrast (SC)
This parameter grade can be
“A,” “B,” “C,” “D” or “F.”
Symbol contrast is the difference in reflectance val-
ues of the
“lightest” space (inclu
ding the quiet zone)
and the
“darkest” bar of the symbol. The greater the
difference, the higher the grade.
SC = Rmax - Rmin
Symbol Grade
The simple average of all the overall profile grades
using the standard weighing
4.0 = A
3.0 = B
2.0 = C
1.0 = D
0.0 = F
The symbol grade may be stated as a decimal or
converted to a letter grade. A measuring aperture
number and nominal wavelength are also specified.
Symbology
A set of rules for encoding information in a bar code
symbol.
Symbology Reference Decode Algorithm
A decoding algorithm that may be found in a particu-
lar application and/or symbology specification.
TAPPI
Technical Association of Pulp and Paper Industry.