RJS Inspector D4000 SP (FIRMWARE version A.06 and Later) - Manual (Page 64)

Appendix K Operator
’s Guide
RJS, Minneapolis, MN 002-5572
Decode
Determining the information which has been en-
coded in a bar code symbol.
Decoder
The portion of a bar code reading system that per-
forms the decode function.
Defects
This parameter grade can be
“
A,
” “B,” “C,” “D” or
“F.”
Defects are of two types, voids and spots. Voids
are light areas in bars, and spots are dark areas in
spaces.
The defect grade is determined by a relationship
between the largest defect in the symbol and sym-
bol contrast. The smaller the defect, the better the
grade. Aperture size can affect grade; for example,
using a small aperture to analyze a very wide ele-
ment will permit detection of the largest defects.
Defects are usually voids, and these defects can be
reduced by increasing the amount of ink (or
equivalent).
Diffuse Reflection
Reflected light which emanates uniformly in all di-
rections from the reflecting surface.
Dimensional Deviation (DD)
The measured deviation of bars and/or spaces of a
scanned symbol from the specification.
Discrete Code
A bar code or symbol wherein the spaces between
the characters are not part of the data.