RJS Inspector D4000 Auto Optic (FIRMWARE version A.06 and Later) - Manual (Page 78)

Appendix K Operator
’s Guide
RJS, Minneapolis, MN 002-5564
The ability to read a bar code symbol from any angle
as long as the bar code passes across the scanner
window.
Opacity
The property of a material that minimizes the show-
through of printing from the back side or the next
sheet.
Overhead
The number of characters in a symbol required for
start, stop and checking.
Over-laminate
A coating or material adhered to the scanning sur-
face of a bar code symbol.
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 repre-
senting 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.