RJS Inspector D4000 Laser (FIRMWARE version A.05 and Earlier) - Manual (Page 75)

Appendix K Operator ’ s Guide
002-5568 RJS, Minneapolis, MN 69
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 val-
ues 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)
The Model L1000 does not check for PCS.
Profile
See Scan Reflectance Profile
Quiet Zone
The area immediately preceding the start character and following the stop character in a
barcode symbol as specified in a particular application and/or symbology specification.
x 100%