Rjs Inspector D4000 Laser (FIRMWARE version A.05 and E Instrukcja Użytkownika Strona 69

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Appendix K Operators Guide
002-5568 RJS, Minneapolis, MN
63
Element
A generic term used to refer to either a bar or space in a barcode symbol.
Element Edge
The location where the scan reflectance profile intersects the midpoint between the space
reflectance (Rspace) and bar reflectance (Rbar) of adjoining elements. Visual measuring
techniques will generally locate the element edge closer to the center of the bar.
Element Reflectance Nonuniformity (ERN)
The reflectance difference between the highest peak and lowest valley within each indi-
vidual element and quiet zone. When an element consists of a single peak or valley, its
element reflectance non-uniformity is zero.
Element Width
The thickness or width of a bar or space as measured from its leading edge to its trailing
edge.
Encoded Area
The total linear dimensional space taken by all characters of a code pattern including
start/stop and data.
First Read Rate
The percentage of successful reads of a barcode symbol on the first attempt.
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