Operator
’s Guide
Appendix M
003-4500
RJS, Minneapolis, MN
107
Appendix M (Bar code definitions)
Achieved Width
The
calculated
element
width
based
on
measurements.
Alphanumeric
A character set that contains letters, digits, and other
characters such as punctuation marks. Also, a
character that is either numeric or alpha. (In
programming an alphanumeric cannot be used to do
arithmetic)
ANSI
American National Standards Institute, Inc. 25 West
43rd Street, 4th floor New York, NY 10036
Aperture
The effective opening in an optical system that
established the field of view.
Application Specification
A set of rules for using bar code symbols.
Aspect Ratio
The ratio of height to width of a bar code symbol.
Bar
An element of a bar code symbol whose reflectance is
less than the global threshold. A Bar is the dark
(reflective) element of a bar-code. (As opposed to a
space which is the light reflective element)