Datalogic QLM500 Installation Manual download pdf (Page 112)

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GLOSSARY

ACR-Lite (Advanced Code Reconstruction)

This is a light version of the powerful Advanced Code Reconstruction technology applied to

high performance high precision scanners. ACR-Lite is effective in reading codes positioned

close-to-linear, small height codes, damaged codes, or poor print quality codes. See par. 7.1.

Aperture

Term used on the required CDRH warning labels to describe the laser exit window.

Barcode

A pattern of variable-width bars and spaces which represents numeric or alphanumeric data

in machine-readable form. The general format of a barcode symbol consists of a leading

margin, start character, data or message character, check character (if any), stop character,

and trailing margin. Within this framework, each recognizable symbology uses its own unique

format.

Barcode Label

A label that carries a barcode and can be affixed to an article.

Baud Rate

A 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 the

safety regulations governing acceptable limitations on electronic radiation from laser devices.

Datalogic devices are in compliance with the CDRH regulations.

Code Positioning

Variation in code placement that affects the ability of a scanner to read a code. The terms

Pitch, Skew, and Tilt deal with the angular variations of code positioning in the X, Y and Z

axes. See pars. 3.2.1 and 3.2.5. Variations in code placement affect the pulse width and

therefore the decoding of the code. Pulse width is defined as a change from the leading edge

of a bar or space to the trailing edge of a bar or space over time. Pulse width is also referred

to as a transition. Tilt, pitch, and skew impact the pulse width of the code.

Decode

The process of translating a barcode into data characters using a specific set of rules for

each symbology.

Decoder

As part of a barcode reading system, the electronic package which receives the signals from

the scanner, performs the algorithm to interpret the signals into meaningful data and provides

the interface to other devices. The decoder is normally integrated into the scanner.

EAN

European Article Number System. The international standard barcode for retail food

packages.

FLASH

An on-board non-volatile memory chip.

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: [email protected]

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Datalogic QLM500 Installation Manual Page 112