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Advanced Scanner Configuration Guide
Element
Encoded Area
Host Computer
IEC
IEC (825) Class 1
IEC (825) Class 2
Intercharacter Gap
Interleaved Bar Code
Interleaved 2 of 5
LASER
Laser Diode
LED Indicator
MIL
Misread (Misdecode)
MSI
Generic term for a bar or space.
Total linear dimension occupied by all characters of a code pattern, including
start/stop characters and data.
A computer that serves other terminals in a network, providing such services as
computation, database access, supervisory programs, and network control.
International Electrotechnical Commission. This international agency regulates
laser safety by specifying various laser operation classes based on power output
during operation.
This is the lowest power IEC laser classification. IEC Class 1 devices are safe
under reasonably foreseeable conditions of operation. Software and other controls
to limit exposure to laser light may be required to achieve IEC Class 1 operation.
The IEC time base for Class 1 devices is 100 seconds if intentional viewing of laser
light is not required in the design or function of the device. The IEC time base for
Class 1 devices is 30,000 seconds where intentional viewing of laser light is
inherent in the design or function of the device.
IEC Class 2 devices may not emit more than 1 milliWatt average radiant power.
For this scan engine, additional software controls are not necessary. Eye
protection for IEC Class 2 devices is normally afforded by aversion responses,
including the blink reflex.
The space between two adjacent bar code characters in a discrete code.
A bar code in which characters are paired together, using bars to represent the first
character and the intervening spaces to represent the second.
A binary bar code symbology representing character pairs in groups of five bars
and five interleaved spaces. Interleaving provides for greater information density.
The location of wide elements (bar/spaces) within each group determines which
characters are encoded. This continuous code type uses no intercharacter spaces.
Only numeric (0 to 9) and START/ STOP characters may be encoded.
Light Amplification by Stimulated Emission of Radiation. The laser is an
intense light source. Light from a laser is all the same frequency, unlike the output
of an incandescent bulb. Laser light is typically coherent and has a high energy
density.
A gallium-arsenide semiconductor type of laser connected to a power source to
generate a laser beam. This laser type is a compact source of coherent light.
A semiconductor diode (LED - Light Emitting Diode) used as an indicator, often in
digital displays. The semiconductor uses applied voltage to produce light of a
certain frequency determined by the semiconductor's particular chemical
composition.
1 mil = 1 thousandth of an inch.
A condition, which occurs when the data output of a reader or interface controller
does not agree with the data encoded within a bar code symbol.
A numeric-only bar code type. It can accept a variable number of digits up to 13.
MSI consists of four bars and four adjacent spaces. Each bar\space pair consists
Revision: 2.0 , technical changes excepted
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