Rjs Inspector D4000 Auto Optic (FIRMWARE version A.05 Manual do Utilizador descarregar pdf (Página 76)

Operator’s Guide Appendix K

002-5564 RJS, Minneapolis, MN

Parity

A system for encoding characters as “odd” or “even” for self checking of barcodes.

Peak

The graphical pattern on a scan reflectance profile which looks like an upside down “U”

or “V.” Within a profile a peak represents a space. One or more peaks could also be

found within an element representing a reflectance change within an element.

Plaque

A template used as a reflectance calibration standard (RCS). The known reflectance

values are posted on the back of the plaque.

Print Contrast Signal (PCS)

A comparison between the reflectance (brightness difference) of bars and spaces in a

symbol. PCS under a given set of illumination conditions is defined as follows:

PCS is calculated as follows:

L - D

Where:

L = Lightest (highest reflectance)

D = Darkest (lowest reflectance)

Profile

See Scan Reflectance Profile

Quiet Zone

The area immediately preceding the start character and following the stop character in a

bar-code symbol as specified in a particular application and/or symbology specification.

x 100%

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Rjs Inspector D4000 Auto Optic (FIRMWARE version A.05 Manual do Utilizador Página 76