RJS Inspector D4000 Auto Optic (FIRMWARE version A.05 and Earlier) - Manual (Page 76)

Operator
’
s Guide Appendix K
002-5564 RJS, Minneapolis, MN 69
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
L
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.
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