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Glossary-4
LS 9208 Product Reference Guide
IEC (825) Class 1 This is the lowest power IEC laser classification. Conformity is
ensured through a software restriction of 120 seconds of laser
operation within any 1000 second window and an automatic laser
shutdown if the scanner's oscillating mirror fails.
Intercharacter Gap The space between two adjacent bar code characters in a discrete
code.
Interleaved Bar
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.
Interleaved 2 of 5 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.
LASER - 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.
Laser Diode 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.
LED Indicator 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.
MIL 1 mil = 1 thousandth of an inch.
Misread
(Misdecode)
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.
Nominal The exact (or ideal) intended value for a specified parameter.
Tolerances are specified as positive and negative deviations from this
value.
Nominal Size Standard size for a bar code symbol. Most UPC/EAN codes are used
over a range of magnifications (e.g., from 0.80 to 2.00 of nominal).
Parameter A variable that can have different values assigned to it.