Table of Contents
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GL-8
Symbol DS6607 Product Reference Guide
Self-Checking Code
Skew
Space
Space Width
Specular Reflection
Stacked Symbol (2D Symbols)
Start/Stop Character
Substrate
Symbol
Symbol Aspect Ratio
Symbol Density
Symbol Height
Symbol Length
Symbology
Tilt
Tolerance
Two-dimensional symbology
UCC
UCC.EAN-128
UPC
Variable Length Code
A symbology that uses a checking algorithm to detect encoding errors within
the characters of a bar code symbol.
Rotation of a bar code symbol on an axis parallel to the symbol's length.
The lighter element of a bar code formed by the background between bars.
The thickness of a space measured from the edge closest to the symbol start
character to the trailing edge of the same space.
The mirror-like direct reflection of light from a surface, which can cause
difficulty decoding a bar code.
A 2-dimensional (2D) symbol with sequences of linear (width-coded) data that
are stacked one upon another (i.e., PDF417).
A pattern of bars and spaces that provides the scanner with start and stop
reading instructions and scanning direction. The start and stop characters are
normally to the left and right margins of a horizontal code.
A foundation material on which a substance or image is placed.
A scannable unit that encodes data within the conventions of a certain
symbology, usually including start/stop characters, quiet zones, data
characters, and check characters.
The ratio of symbol height to symbol width.
The number of data characters per unit length; usually expressed as characters
per inch (CPI).
The distance between the outside edges of the quiet zones of the first row and
the last row.
Length of symbol measured from the beginning of the quiet zone (margin)
adjacent to the start character to the end of the quiet zone (margin) adjacent to
a stop character.
The structural rules and conventions for representing data within a particular
bar code type (e.g. UPC/EAN, Code 39).
Rotation of a bar code symbol on an axis perpendicular to the substrate.
Allowable deviation from the nominal bar or space width.
A machine-readable symbol which must be examined both vertically and
horizontally to read the entire message.
A 2-dimensional (2D) symbol may be one of two types of machine-readable
symbols: a Matrix Symbol or a stacked symbol. 2D symbols differ from linear
bar codes with the ability for high data content, small size, data efficiency and
error correction capability.
Uniform Code Council: the organization that administers the U.P.C and other
retail standards.
Code 128 with a Function 1 character in the first position that is the symbology
used with the UCC.EAN format for a universal product number (UPN).
Universal Product Code. A relatively complex numeric symbology. Each
character consists of two bars and two spaces, each of which is any of four
widths. The standard symbology for retail food packages in the United States.
A code with a number of encoded characters within a range, as opposed to a
code with a fixed number of encoded characters.
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