Specifications

Glossary - 6 Symbol SE6700 Integration Guide

Quiet Zone. A clear space, containing no dark marks, which precedes the start character of a bar code symbol and follows

the stop character.

QWERTY. A standard keyboard commonly used on North American and some European PC keyboards. “QWERTY” refers

to the arrangement of keys on the left side of the third row of keys.

RAM. Random Access Memory. Data in RAM can be accessed in random order, and quickly written and read.

Reflectance. Amount of light returned from an illuminated surface.

Resolution. The narrowest element dimension which is distinguished by a particular reading device or printed with a

particular device or method.

RS-232. An Electronic Industries Association (EIA) standard that defines the connector, connector pins, and signals used to

transfer data serially from one device to another.

Scan Area. Area intended to contain a symbol.

Scanner. An electronic device used to scan bar code symbols and produce a digitized pattern that corresponds to the bars

and spaces of the symbol. Its three main components are: 1) Light source (laser or photoelectric cell) - illuminates a bar

code,; 2) Photodetector - registers the difference in reflected light (more light reflected from spaces); 3) Signal

conditioning circuit - transforms optical detector output into a digitized bar pattern.

Scanning Mode. The scanner is energized, programmed and ready to read a bar code.

Scanning Sequence. A method of programming or configuring parameters for a bar code reading system by scanning bar

code menus.

SDK. Software Development Kit

Self-Checking Code. A symbology that uses a checking algorithm to detect encoding errors within the characters of a bar

code symbol.

SMDK. Symbol Mobility Developer’s Kit.

Space. The lighter element of a bar code formed by the background between bars.

Specular Reflection. The mirror-like direct reflection of light from a surface, which can cause difficulty decoding a bar code.

Start/Stop Character. A pattern of bars and spaces that provides the scanner with start and stop reading instructions and

scanning direction. The start and stop characters are normally to the left and right margins of a horizontal code.