Motorola SYMBOL MINISCAN MSXX04 User Manual

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Glossary - 5

U.P.C. is often considered a 12-digit code. The 13th digit of EAN/U.P.C. symbol is a derived character in the left-most
position. In the case of U.P.C., this derived left-most character is a 0.

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.

Error Correction. A reader or decoder's use of mathematical schemes to reconstruct or replace damaged or missing

symbol characters to enable the reading of the symbol data.

Error-Correction Characters. Symbol characters used for error correction and detection, calculated automatically from the

other symbol characters.

Error-Correction Level. An indicator of the number of characters used in a symbology for error correction. A higher level

of error correction allows for correcting greater potential symbol damage.

Error Detection. This occurs when error-correction characters detect that the presence of errors in the symbol exceeds the

error correction capacity, and keeps the symbol from being decoded as erroneous data.

Error-Detection Characters. Symbol characters reserved for error detection that are calculated automatically from the

other symbol characters.

ESD. Electro-Static Discharge

Fixed Beam Bar Code Reader. A scanning device where scanning motion is achieved by moving the object relative to the

reader; as opposed to a moving beam reader.

GS1 DataBar. Formerly Reduced Space Symbology (RSS): A family of space efficient symbologies developed by

UCC.EAN.

Guard Bars. Bars located at both ends and the center of a UPC and EAN symbol to provide reference points for scanning.

Horizontal Bar Code. A bar code or symbol with an overall length dimension that is parallel to the horizon, which resembles

a picket fence.

Host Computer. A computer that serves other terminals in a network, providing such services as computation, database

access, supervisory programs and network control.