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Glossary-4
LS 1220 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.
MSI Plessey
A numeric-only bar code type. It can accept a variable number of digits up to
13. MSI Plessey consists of four bars and four adjacent spaces. Each
bar\space pair consists of one information bit. A zero bit consists of a narrow
bar followed by a wide space, while one bit consist of a wide bar followed by
a narrow bar. The zero bit is one unit bar followed by a two-unit space and
the one bit is a two-unit bar followed by a one unit space. The primary
application for the MSI Plessey code is marking of retail shelves and
subsequent scanning
with portable devices for inventory purposes.
Summary of Contents for LS 1220
Page 2: ...LS 1220 Product Reference Guide ...
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Page 4: ...LS 1220 Product Reference Guide 70 12072 03 Revision A January 2003 ...
Page 23: ...1 8 LS 1220 Product Reference Guide Figure 1 3 LS 1220 Connector ...
Page 33: ...2 10 LS 1220 Product Reference Guide ...
Page 71: ...8 14 LS 1220 Product Reference Guide Figure 8 1 Hardware Handshaking ...
Page 97: ...9 6 LS 1220 Product Reference Guide Code Lengths cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Page 105: ...9 14 LS 1220 Product Reference Guide Prefix Suffix Values cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Page 108: ...9 17 Parameter Menus UPC Security Zone cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
Page 120: ...9 29 Parameter Menus Intercharacter Delay cont d 1 2 3 4 5 6 7 8 9 0 CANCEL ...
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