Symbol LS 3408, Product Reference Manual

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LS 3408 Product Reference Guide GL-8
Error-Correction Characters Symbol characters used for error correction and detection,
calculated automatically from the other symbol characters.
Error-Correction Level An indicator of the number of characters used in a
symbology for error correction. A higher level of error
correction allows for correcting greater potential symbol
damage.
Error-Detection Characters Symbol characters reserved for error detection that are
calculated automatically from the other symbol characters.
Fixed Beam Bar Code Reader A scanning device where scanning motion is achieved by
moving the object relative to the reader; as opposed to a
moving beam reader.
Guard Bars Bars located at both ends and the center of a UPC and EAN
symbol to provide reference points for scanning.
Horizontal Bar Code A bar code or symbol with an overall length dimension that
is parallel to the horizon, which resembles a picket fence.
Host Computer A computer that serves other terminals in a network,
providing such services as computation, database access,
supervisory programs, and network control.
IEC International Electrotechnical Commission. This
international agency regulates laser safety by specifying
various laser operation classes based on power output
during operation.
IEC (825) Class 1 This is the lowest power IEC laser classification.
Conformity is ensured through a software restriction of 120
seconds of laser operation within any 1000 second window
and an automatic laser shutdown if the scanner's
oscillating mirror fails.
Intercharacter Gap The space between two adjacent bar code characters in a
discrete code.
Interleaved 2 of 5 A binary bar code symbology representing character pairs
in groups of five bars and five interleaved spaces.
Interleaving provides for greater information density. The
location of wide elements (bar/spaces) within each group
determines which characters are encoded. This continuous
code type uses no intercharacter spaces. Only numeric (0 to
9) and START/STOP characters may be encoded.