Datalogic DS2100N Reference Manual

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Datalogic DS2100N Reference Manual Manual pdf 112 page image

102GLOSSARYACR-Lite (Advanced Code Reconstruction)This is a light version of the powerful Advanced Code Reconstruction technology applied tohigh performance high precision scanners. ACR-Lite is effective in reading codes positionedclose-to-linear, small height codes, damaged codes, or poor print quality codes. See par. 7.1.ApertureTerm used on the required CDRH warning labels to describe the laser exit window.BarcodeA pattern of variable-width bars and spaces which represents numeric or alphanumeric datain machine-readable form. The general format of a barcode symbol consists of a leadingmargin, start character, data or message character, check character (if any), stop character,and trailing margin. Within this framework, each recognizable symbology uses its own uniqueformat.Barcode LabelA label that carries a barcode and can be affixed to an article.Baud RateA unit used to measure communications speed or data transfer rate.CDRH (Center for Devices and Radiological Health)This organization (a service of the Food and Drug Administration) is responsible for thesafety regulations governing acceptable limitations on electronic radiation from laser devices.Datalogic devices are in compliance with the CDRH regulations.Code PositioningVariation in code placement that affects the ability of a scanner to read a code. The termsPitch, Skew, and Tilt deal with the angular variations of code positioning in the X, Y and Zaxes. See pars. 3.2.1 and 3.2.4. Variations in code placement affect the pulse width andtherefore the decoding of the code. Pulse width is defined as a change from the leading edgeof a bar or space to the trailing edge of a bar or space over time. Pulse width is also referredto as a transition. Tilt, pitch, and skew impact the pulse width of the code.DecodeThe process of translating a barcode into data characters using a specific set of rules foreach symbology.DecoderAs part of a barcode reading system, the electronic package which receives the signals fromthe scanner, performs the algorithm to interpret the signals into meaningful data and providesthe interface to other devices. The decoder is normally integrated into the scanner.EANEuropean Article Number System. The international standard barcode for retail foodpackages.FLASHAn on-board non-volatile memory chip.