Datalogic DS8100A Reference Manual

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Datalogic DS8100A Reference Manual Manual pdf 88 page image

GLOSSARYACR™ 4Each version of the base has the powerful code reconstruction technology (ACR™ 4). Thenew fourth generation ACR™ considerably increases the code reconstruction readingcapability in the case of damaged or very tilted barcodes.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.CD SQUARE™CD SQUARE™ provides useful information on label position and object shape elaboratedduring the barcode reading phase. This innovative technology identifies the area in which thecode is located and measures the code distance from the scanner.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. 2.5. Variations in code placement affect the pulse width and therefore thedecoding of the code. Pulse width is defined as a change from the leading edge of a bar orspace to the trailing edge of a bar or space over time. Pulse width is also referred to as atransition. Tilt, pitch, and skew impact the pulse width of the code.EEPROMElectrically Erasable Programmable Read-Only Memory. An on-board non-volatile memorychip.Full DuplexSimultaneous, two-way, independent transmission in both directions.Half DuplexTransmission in either direction, but not simultaneously.72