Operator’s Guide Appendix K
002-5564 RJS, Minneapolis, MN
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.
Reference Decode
Each symbology type specifies a specific decoding
method to be used in determining overall symbol
grade.
This parameter grade can be “A” or “F.” (“A” is pass
and “F” is fail). If this parameter is “F” the overall
symbol grade will also be “F” regardless of any other
parameter. If this parameter is “A” the lowest of the
other parameter grades determines the overall
symbol grade.
Reflectance
A measure of the amount of light reflected from an
illuminated surface.
Reflectance Minumum
x 100%
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