Motorola Symbol LS4278 Product Reference Manual page 399

Decode Algorithm. A decoding scheme that converts
pulse widths into data representation of the letters or
numbers encoded within a bar code symbol.
Decryption. Decryption is the decoding and
unscrambling of received encrypted data. Also see,
Encryption and Key.
Depth of Field. The range between minimum and
maximum distances at which a scanner can read a
symbol with a certain minimum element width.
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.
Element. Generic term for a bar or space.
H
HID. Human Interface Device. A Bluetooth host type.
Host Computer. A computer that serves other terminals
in a network, providing such services as computation,
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.
Intercharacter Gap. The space between two adjacent
bar code characters in a discrete code.
Discrete Code. A bar code or symbol in which the spaces
between characters (intercharacter gaps) are not part
of the code.
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.
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.
ESD. Electro-Static Discharge
database access, supervisory programs and network
control.
Hz. Hertz; A unit of frequency equal to one cycle per
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.
Interleaved Bar Code. A bar code in which characters
are paired together, using bars to represent the first
Glossary - 3