Operator’s Guide Appendix K
002-5564 RJS, Minneapolis, MN
This parameter grade can be “A” or “F.” The
reflectance value of the “lightest” space in a symbol
must be equal to or greater than twice the
reflectance 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” reflectance 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
reflectance 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
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