Operator
’s Guide
Appendix J
003-4500
RJS, Minneapolis, MN
93
Appendix I (Aperture Selection)
The Inspector 5000 Auto Optic has four different aperture
(light) sizes that can be used for inspecting bar codes. It
is very important that the aperture selected matches the
aperture of the bar code scanner that will be used in the
supply chain. The aperture is selected by the user from
the Setup screen.
General Aperture size recommendation:
X-Dim / NBW Range
Aperture Size
0.0040
”
≤
X
≤
0.0070
”
0.1016mm
≤
X
≤
0.1778mm
0.003
” (3 mil)
0.0762mm
0.0070
”
≤
X
≤
0.0130
”
0.1778mm
≤
X
≤
0.3302mm
0.006
” (6 mil)
0.1270mm
0.0130
”
≤
X
≤
0.0250
”
0.3302mm
≤
X
≤
0.6350mm
0.010
” (10 mil)
0.2540mm
0. 0250
”
< X
0. 6350mm < X
0.020
” (20 mil)
0.5080mm
The X-Dimension/Narrow Bar Width (NBW) can be
determined by inspecting a bar code and using the Down
Arrow button on the Grade screen to scroll to the Narrow
Bar Width or Magnification/NBW field (varies by
symbology scanned) and pressing the Select button.
This will display the Narrow Bar Width Calculator
screen. Measure the distance from the left most bar to
the right most bar and enter this value into the Barcode
Width field using the Arrow buttons, the Inspector 5000
will automatically determine and display the Narrow Bar
Width (or Magnification depending the Symbology) which
can then be looked up on the chart above.
Note:
6 mil (0.152mm) is used for most UPC/EAN bar codes (5
mil (0.127mm) is used in Europe)
10 mil (0.254mm) is used for most GS1-128 bar codes
and 150% magnification or larger UPC/EAN
20 mil (0.508mm) is used for most ITF-14 and ITF-18 bar
codes