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Glossary - 3
Depth of Field. The range between minimum and maximum distances at which a scanner can read a symbol with a
certain minimum element width.
Device Configuration Package. The Symbol Device Configuration Package provides the Product Reference Guide
(PRG), flash partitions, Terminal Configuration Manager (TCM) and the associated TCM scripts. With this package
hex images that represent flash partitions can be created and downloaded to the mobile computer.
Discrete 2 of 5. A binary bar code symbology representing each character by a group of five bars, two of which are
wide. The location of wide bars in the group determines which character is encoded; spaces are insignificant. Only
numeric characters (0 to 9) and START/STOP characters may be encoded.
E
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.
EMDK. Enterprise Mobility Developer’s Kit.
ESD. Electro-Static Discharge
F
File Transfer Protocol (FTP). A TCP/IP application protocol governing file transfer via network or telephone lines. See
TCP/IP.
Flash Memory. Flash memory is nonvolatile, semi-permanent storage that can be electronically erased in the circuit
and reprogrammed.
FHSS (Frequency Hopping Spread Sprectrum). A method of transmitting radio signals by rapidly switching a carrier
among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver.
G
GPS (Global Positioning System). A satellite-based navigation system made up of a network of 24 satellites. GPS
satellites circle the earth and transmit signal information to earth. GPS receivers take this information and use
triangulation to calculate the user's exact location.
H
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.
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