Glossary - 4 MC31XX Series Mobile Computer User Guide
ESN. Electronic Serial Number. The unique hardware number associated with a cellular device, which is transmitted to the
system when the device communicates with the cellular system.
Ethernet. Ethernet communication port. Allows a wired interface to a radio network.
F
Flash Memory. Flash memory is responsible for storing the system firmware and is non-volatile. If the system power is
interrupted the data is not be lost.
FTP. See File Transfer Protocol.
G
Gateway Address. An IP address for a network gateway or router. A mobile computer may be part of a subnet as specified
by its IP address and Netmask. It can send packets directly to any node on the same subnet. If the destination node is
on a different subnet, then the terminal sends the packet to the gateway first. The gateway determines how to route the
packet to the destination subnet. This field is an option used by networks that require gateways.
H
Hard Reset. See Cold Boot.
Hz. Hertz; A unit of frequency equal to one cycle per second.
Host Computer. A computer that serves other terminals in a network, providing such services as computation, database
access, supervisory programs and network control.
I
IEC. International Electrotechnical Commission. This international agency regulates laser safety by specifying various laser
operation classes based on power output during operation.
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.
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