Rockwell Automation 2755 2D Hand-Held Scanner - Manual (Page 115)

Glossary
Publication 2755-6.4
A
ASCII
American Standard Code for Information Interchange.
A 7 bit-plus-parity code representing 128 letters, numerals,
punctuation marks, and control characters. It is a standard data
transmission code in the U.S.
Asymmetric Width Growth
Non-uniform growth of elements in a printer symbol.
Autodiscrimination
The ability of an interface controller to determine the code type of a
scanned bar code. After this determination is made, the information
content can be decoded.
Average Bar Width Growth
Average deviation of bars from nominal value widths over the entire
symbol.
B
Bad Check Digit
Error message resulting from failure of the check digit to calculate
properly.
Bad Data Character
Error message caused by failure of one or more data characters to
decode properly.
Bad Print Contrast
Error message due to lack of contrast between the background and
the bars of the symbol.
Bar
The dark element in a printed bar code symbol.