MC50 Integrator GuideGL-6
DRAM Dynamic random access memory.
DTE See Data Terminal Equipment.
EAN European Article Number. This European/International
version of the UPC provides its own coding format and
symbology standards. Element dimensions are specified
metrically. EAN is used primarily in retail.
Element Generic term for a bar or space.
Encoded Area Total linear dimension occupied by all characters of a code
pattern, including start/stop characters and data.
ENQ (RS-232) ENQ software handshaking is also supported for the data
sent to the host.
Encryption Encryption is the scrambling and coding of data, typically
using mathematical formulas called algorithms, before
information is transmitted over any communications link or
network. A key is the specific code used by the algorithm to
encrypt or decrypt the data. Also see, Decryption and Key.
ESD Electro-Static Discharge
ESN Electronic Serial Number. The unique hardware number
associated with a cellular device, which is transmitted to
the system when the device communicates witht he
celllular system.
ESS_ID Extended Service Set Identifier, defines the coverage area.
Prior to the release of the 802.11 specification the ESS_ID
was called the Net_ID or Network Identifier. For terminals
using Spectrum24 radios with the 802.11 protocol, an
ESS_ID allows facilities to limit which Access Points a
mobile computer can communicate with. It is set on the
Network tab of the Control Panel. The terminal can only
communicate with Spectrum24 Access Points that have
matching ESS_IDs.
Ethernet Ethernet communication port. Allows a wired interface to a
radio network.
Flash Disk An additional megabyte of non-volatile memory for storing
application and configuration files.
Flash Memory Flash memory is nonvolatile, semi-permanent storage that
can be electronically erased in the circuit and
reprogrammed. Series 9000 mobile computers use Flash
memory to store the operating system (ROM-DOS), the
terminal emulators, and the Citrix ICA Client for DOS.
File Transfer Protocol (FTP) A TCP/IP application protocol governing file transfer via
network or telephone lines. See TCP/IP.
Frequency Hopping The use of a random sequence of frequency channels to
achieve spread spectrum compliance. Stations that use
frequency hopping change their communications frequency
at regular intervals. A hopping sequence determines the
pattern at which frequencies are changed. Messages take
place within a hop. See Hopping Sequence and Spread
Spectrum.
FTP See File Transfer Protocol.
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