OUTLINE FOR PRODUCT REFERANCE MANUAL
Z-3070 CCD BARCODE SCANNER
Character Set
Those characters available for encoding in a particular
barcode symbology.
Check Digit
A digit used to verify a correct symbol decodes. The
scanner inserts the decoded data into an arithmetic
formula and checks that the resulting number matches
the encoded check digit. Check digits are required for
UPC but are optional for other symbologies. Using
check digits decreases the chance of substitution
errors when a symbol is decoded.
Codabar
A discrete self-checking code with a character set
consisting of digits 0 to 9 and six additional character
(-$:/,+).
Code 128
A high-density symbology that allows the controller to
encode all 128 ASCII characters without adding extra
symbol elements.
Code 3 of 9
(Code 39)
A versatile and widely used alphanumeric barcode
symbology with a set of 43 character types, including
all uppercase letters, numerals from 0 to 9, and 7
special character (-./+$ and space). The code name
is derived from the fact that 3 of 9 elements
representing a character are wide, while the remaining
6 are narrow.
Code 93
An industrial symbology compatible with Code 39 but
offering a full character ASCII set and a higher coding
density than Code 39.
Code Length
Number of data characters in a bar code between the
start and stop character, not including those
characters.
Continuous
Code
A barcode or symbols in which all spaces within the
symbol are parts of characters. There are no
intercharacter gaps in a continuous code. The
absence of gaps allows for greater Information density.
ZEBEX INDUSTRIES INC.
All Rights Reserved.
64
