Motorola MC21XX SERIES, User Manual

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Glossary - 5
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.
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.
imaging scanning . MC21XXs with an integrated imager use digital camera technology to take a digital picture of a bar
code, store the resulting image in memory and execute state-of-the-art software decoding algorithms to extract the
data from the image.
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.
Internet Protocol Address. See IP .
IP. Internet Protocol. The IP part of the TCP/IP communications protocol. IP implements the network layer (layer 3) of
the protocol, which contains a network address and is used to route a message to a different network or subnetwork.
IP accepts “packets” from the layer 4 transport protocol (TCP or UDP), adds its own header to it and delivers a
“datagram” to the layer 2 data link protocol. It may also break the packet into fragments to support the maximum
transmission unit (MTU) of the network.
IP Address. (Internet Protocol address) The address of a computer attached to an IP network. Every client and server
station must have a unique IP address. A 32-bit address used by a computer on a IP network. Client workstations
have either a permanent address or one that is dynamically assigned to them each session. IP addresses are written
as four sets of numbers separated by periods; for example, 204.171.64.2.
L
LAN. Local area network. A radio network that supports data communication within a local area, such as within a
warehouse of building.
laser scanner. A type of bar code reader that uses a beam of laser light.
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.