SECTION 1
General Information
1-10 SE 1223 Scanner User’s 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.
Reflectance
Amount of light returned from an illuminated surface.
Resolution
The narrowest element dimensions which can be distin-
guished by a particular reading device or printed with a
particular device or method.
Scan Area
Area intended to contain a symbol.
Scanner
An electronic device used to scan bar code symbols and pro-
duce 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.
Содержание SE1223
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Страница 103: ...SECTION 2 Scanner Parameters SE 1223 Scanner User s Guide 2 81 SYMBOL CODE ID CHARACTER AIM CODE ID CHARACTER NONE...
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