Operatorās Guide Appendix K
002-5564 RJS, Minneapolis, MN
Appendix K (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)
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