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8-14 A-61140 January 2000
Message 3
If the bar code test was successful, the following results will be
displayed. Press Enter to access each display.
W/N = XX. XX : 1
NEW = .XXXX
Press Enter to display the next message:
RMIN = XXX%
Contrast = .XXX%
Press Enter to display the last message:
MOD = XXX%
DEF = XXX% Grade = X
Evaluating test results
The results of the Read Rate test will tell you how well your Bar Code
Reader is working. The following descriptions and tables will help you
determine the results of the bar code test.
Dimensional Fields (Pass or Fail)
W/N — the average ratio of wide element widths to narrow element
widths within a bar code. The ratio is calculated for both bars and
spaces; the smallest of the two ratios is displayed.
New — the measure of the smallest Narrow-Element Width.
Reflectance Fields (Grades A through F)
RMIN — minimum reflectance. A measure of the lightest element of the
bar code.
Contrast — a comparison of the darkest and lightest element of the bar
code.
MOD — Modulation. A measure of the consistency of the overall bar
code print clarity (all elements), specifically the occurrence of spots (in
spaces) and voids (in bars).
DEF — Defect ratio. A measure of the consistency of the individual
element print clarity, specifically the occurrence of spots (in spaces) and
voids (in bars).
Grade — indicates the overall grade of the bar code evaluation. This
grade is based upon the field values that appear in the remainder of the
display. The fields which appear in the remainder of the display are
either dimensional or reflectance fields.
Each of the reflectance field values are converted to a letter grade
(where A is the highest and F is the lowest). The lowest letter grade
assigned to any one of the reflectance fields is the overall grade
assigned to the bar code.