Rockwell Automation 2755 High Performance VLD Scanner - Manual (Page 50)

Glossary G–2
Character
A single group of bars and spaces representing an individual number,
letter or punctuation mark. A graphic shape representing a letter,
number or symbol.
Character Alignment
The vertical or horizontal position of characters with respect to a
given reference line.
Character Density
The dimension, in linear inches, required to encode one character.
Character Set
Those characters available for encoding purposes.
Character Skew
See skew.
Character Spacing
The horizontal distance between two adjacent characters.
Check Digit
A digit included within a symbol whose value is based
mathematically on other characters included in the symbol. It is used
to mathematically check the accuracy of a symbol.
Clear Area
A clear space, containing no dark marks, that precedes the start
character of a symbol and follows the stop character. Also referred
to as the symbol’s Quiet Zone.
Code Medium
The material used to construct a machine readable code. Such
materials may be retrospective or opaque.
Code Type
See symbology.
Continuous Code
A bar code or symbol that does not use an intercharacter gap
between characters in the code. Interleaved 2 of 5 is an example of a
continuous code.
Decode
The process of translating a bar code into data characters using a
specific set of rules for each symbology.
Decoder
A device used to convert the signal from the scanning device into a
usable format (usually ASCII characters).