RJS Inspector D4000 Auto Optic (FIRMWARE version A.06 and Later) User Manual
Page 80
Appendix K
Operator
’s Guide
RJS, Minneapolis, MN
002-5564
This parameter grade can be
“A” or “F.” The refle
c-
tance value of the
“lightest” space in a symbol must
be equal to or greater than twice
the
reflec-
tance value of the
“darkest” bar.
Refl(max) = or > Refl(min) x 2 if
“yes” “A” else “F”
Reflectance Calibration Standard
(See plaque) A standard or
“known” refle
ctance value,
usually printed on the back of a template or plaque. Bar
code readers are calibrated for reflectance using these
known values.
Required PCS
This is the minimum PCS percent required for the
symbol.
Resolution
The dimension of the smallest code element that can
be printed; the higher the resolution the clearer the
image.
Scanner
An electronic device that converts printed information
into electrical signals.
Scan Reflectance Profile
A record (usually graphically represented) of the re-
flectance measured using the reference reflectivity
method as a function of distance across the entire
bar code symbol.
Segment
Refers to the left and right grouping of modules or
elements into segments to designate parity for
checking validity of a scan.
Self-checking