RJS Inspector D4000 SP (FIRMWARE version A.06 and Later) - Manual (Page 66)

Appendix K Operator
’s Guide
RJS, Minneapolis, MN 002-5572
Element Reflectance Non-uniformity (ERN)
The reflectance difference between the highest
peak and lowest valley within each individual ele-
ment and quiet zone. When an element consists of
a single peak or valley, its element reflectance non-
uniformity is zero.
Element Width
The thickness or width of a bar or space as meas-
ured from its leading edge to its trailing edge.
Encoded Area
The total linear dimensional space taken by all
characters of a code pattern including start/stop
and data.
First Read Rate
The percentage of successful
“reads” of a
bar code
symbol on the first attempt.
Fixed Beam Scanner
A bar code reading device wherein coded items
pass across a stationary incandescent or LED light
source.
Flexo Film Master
A measurement standard symbol produced by
printing the symbol on clear plastic film using the
Flexographic printing process.
Gloss
A phenomenon related to the specular reflection of
incident light. The effect of gloss is to reflect more
of the incident light in a specular manner, and to
scatter less. This effect occurs at all angles of inci-
dence and should not be confused with the grazing
angle which is specular reflection often referred to
as sheen.