Wasp Bar Code WPS100 manual Glossary-6

Wasp WPS100 Product Reference Guide
Start/Stop	A pattern of bars and spaces that provides the scanner with start and
Character	stop reading instructions and scanning direction. The start and stop
	characters are normally to the left and right margins of a horizontal
	code.
Substrate	A foundation material on which a substance or image is placed.
Symbol	A scannable unit that encodes data within the conventions of a certain
	symbology, usually including start/stop characters, quiet zones, data
	characters, and check characters.
Symbol Aspect	The ratio of symbol height to symbol width.
Ratio
Symbol Height	The distance between the outside edges of the quiet zones of the first
	row and the last row.
Symbol Length	Length of symbol measured from the beginning of the quiet zone
	(margin) adjacent to the start character to the end of the quiet zone
	(margin) adjacent to a stop character.
Symbology	The structural rules and conventions for representing data within a
	particular bar code type (e.g. UPC/EAN, Code 39).
Tolerance	Allowable deviation from the nominal bar or space width.
UPC	Universal Product Code. A relatively complex numeric symbology.
	Each character consists of two bars and two spaces, each of which is
	any of four widths. The standard symbology for retail food packages
	in the United States.
Visible Laser Diode	A solid state device which produces visible laser light.
(VLD)

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