Download LS 6800 Product Reference Guide

LS 6800 Product Reference Guide
Depth Of Field
The range between minimum and maximum distances at which a scanner can
read a symbol with a certain minimum element width.
Discrete Code
Abar code or symbol in which the spaces between characters (intercharacter
gaps) are not part of the code (e.g., Code 39).
Discrete 2 Of 5
A binary bar code symbology representing each character by a group of five
bars, two of which are wide. The location of wide bars in the group
determines which character is encoded; spaces are insignificant. Only
numeric characters (0 to 9) and START/STOP characters may be encoded.
EAN
European Article Number. This European/International version of the UPC
provides its own coding format and symbology standards. Element
dimensions are specified metrically. EAN is used primarily in retail. Main
variants are EAN-8 and EAN-13.
Edge Roughness
Edge irregularities as compared with a nominal bar edge.
Element
Generic term for a bar or space.
Encoded Area
Total linear dimension occupied by all characters of a code pattern, including
start/stop characters and data.
Error Correction
In addition to error detection, the recovery capability of PDF417 over
missing, destroyed, or misdecoded codewords. Error correction capability is
based on the level of security (0 - 8) selected when the PDF417 label is printed.
Extraneous Ink
Ink in a scan area not intended to be there (i.e., tracking and splatter).
First Read Rate
Percentage of correct readings obtainable by one pass of a scanning device
over a bar code.
Flash
Derived from EEPROM, this is a type of memory that holds its content
without power but must be erased in bulk — or in a “flash.” Typically, these
memory chips are less expensive and provide higher bit densities.
Guard Bars
The start, stop, and center delimiting bars of UPC and EAN symbols.
Host Computer
A computer that serves other terminals in a network, providing such services
as computation, database access, supervisory programs, and network control.
Intercharacter Gap
The space between two adjacent bar code characters in a discrete code.
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