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Glossary of Terms

The Intermec glossary provides definitions of technical terms used to describe systems, devices, solutions and applications within the Automated Data Capture Industry.

label
The part of the media on which data is printed.
label format
The design of a bar code label; the arrangement of the text, lines and bar codes on a label.
label gap
The space between labels on die-cut label stock.
ladder
A method of bar code printing in which the bars in the bar code are printed one at a time, in a series. The bar code appears along the length of the label. Used to be referred to as "picket."
LAN
Local area network. A network that is within a small radius, such as an office building. Compare to WAN. See also Ethernet, peer-to-peer network, and Token Ring.
large numeric keypad
One of the keypads available on the reader. The large numeric keypad has 34 keys and is available in English. The number keys are larger to make it easier to enter a lot of numeric data. Compare to alphanumeric keypad.
laser
Light amplification by the stimulated emission of radiation. A laser is a coherent, monochromatic light source produced by directing a light beam repeatedly through an active material so that it becomes amplified, and then directing the beam into a narrow cone of divergence. The active material converts energy into laser light, a pumping source provides power or energy, and separate optics direct the beam through the active material and then into a narrow cone of divergence.
laser diode
A semiconductor laser commonly used in bar code scanners.
laser scanner
An optical bar code reading device that uses a low energy laser light beam to examine a spatial pattern, one part after another. It then generates analog or digital signals corresponding to the pattern. Laser scanners are often used in mark sensing, pattern recognition, character recognition, and bar code recognition. The laser scanner converts bar code symbols to electrical signals for input to a bar code reader decoder for processing and subsequent output through a data communications interface.
LAT protocol
Local area transport protocol.
LED
Light emitting diode. A semiconductor that produces light at a wavelength determined by its chemical composition. This light source is often used in light pens.
legacy system
Existing systems and technology that an organization has a considerable investment in and that might be entrenched in the organization. Some legacy systems have been in place for many years; some are considered old or inadequate technology; many are host-based with terminal emulation. Customers might try to replace or update legacy systems.
legal length
A parameter in the configuration that determines which lengths of a specified symbology can be scanned and decoded.
Level Trigger mode
The laser turns on when you pull the trigger and stays on until you release the trigger. See also Edge Trigger mode.
level triggering
A scanner trigger configuration that makes the laser turn on after you activate the scanner and stay on until you release the Scan button or the trigger on a cabled scanner. Contrast with edge triggering.
libraries
A collection of programs and packages that are made available for common use within some environment; individual items need not be related. A typical library might contain compilers, utility programs, packages for mathematical operations, etc. Usually it is only necessary to reference the library program to cause it to be automatically incorporated in a user's program. (Dictionary of Computing)
light pen
In a bar code system, a handheld scanning wand that is used as a contact bar code reader. See wand scanner.
link station
A link station exists at the end point of a logical connection. It can send to and receive data from other link stations.
list box
A drop-down list of all the existing values for a field. A list box is usually attached to an input field in a dialog box so the application user can enter a value by selecting from a list.
lithium backup battery
The reader contains a lithium backup battery that is designed to back up the RAM and clock while you remove a discharged NiCad battery pack and insert a charged battery pack. The lithium battery will provide backup battery power for 3 to 4 years if you correctly manage power on the reader.
lithium-ion battery pack
Provides the main power source to operate the terminal. The lithium-ion battery pack is rechargeable and charges the backup battery when required.
local
Indicates the same computer as the reference point.
local address
See device address.
local application
If DCM and the application program software are installed on the same computer, the computer is called a local computer or host (also server host).
local editing error
An error that occurs when a user performs an operation in a field that is not supported by the field's properties or definition. No data is sent when a local editing error occurs. For example, a local editing error occurs when a user enters characters in a numeric-only field.
logic box
See imaging processor.
logical COM4
Logical COM4 is the communications port for RF communications in a JANUS 2010 with an RF Back. This COM port is different from COM4, which is the Type II PC card drive when it contains a modem card. Accessing an RF network through logical COM4 does not conflict with accessing a serial communications network through COM4.
logical partition
A logically distinct portion of memory or a storage device that functions as though it were a physically separate unit.
logistics
The tracking and movement of raw materials to finished products and consumption throughout the supply chain.
LRC
Longitudinal redundancy check character. This character is an error checking character that is optionally appended to transmitted blocks of data and optionally checked on received blocks of data. LRC provides horizontal error checking of data blocks received and transmitted by the controller. LRC performs an exclusive OR of the data bits, excluding the SOM, but including the received or transmitted EOM characters.
LSL
Link support layer. This layer serves as an intermediary between ODI and the link driver that supplies an interface between the network board and the rest of the operating system.
LU
Logical unit. LUs define the name by which devices are known throughout the SNA network. An LU is SNA software that accepts APPC verbs and acts on those verbs. A single LU can provide services for multiple transaction programs. Multiple LUs can be active in a node simultaneously. Intermec uses LU type 6.2 that supports communication between a host application and the Model 200 Controller terminal session manager.
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