
Appendix J
Operator
’s Guide
RJS, Minneapolis, MN
003-4500
100
Traditional Analysis (Bar width deviations chart)
“R” letters represent “range”
of bar widths in the code.
“A” represents the average of all character bar width
deviations.
The closer the
“A” is to the center of the display, the
better.
The following shows the percentage of the scanning
tolerance used at each position on the display:
-
93
-
79
-
65
-
50
-
36
-
22
-
8
-
1
0
+
8
+
22
+
36
+
50
+
65
+
79
+
93
Negative numbers to the left indicate bars that are
narrower
Positive numbers to the right indicate bars that are wider
The closer the
“A” is to the edge, the more likely the
Reject.
A symbol is
“Acceptable” until any calculated bar width
deviation exceeds 100% of the tolerance for the
symbology decoded; for example:
Bar Width - Acceptable
-100% Tol. +100%
------RRARR+++++
Bar Width - Warning
-100% Tol. +100%
--------++RRRARR
Bar Width - Rejected
-100% Tol. +100%
--------+++++++R
“A” is out of
tolerance and off the screen.