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Apertures
Pen/Mouse Wand Aperture Selection
The table below is a handy reference to help you choose the proper aperture size required for the size/type bar code you wish to verify. This data is based on the standard ISO/IEC 15416 Bar code Print Quality Test Specification - Linear Symbols.
Aperture Diame- | Aperture | "X" Dimension | "X" Dimension |
ter (in .001”)/Aper- | Diameter | Range (in | Range (in mm) |
ture Ref. No. |
| inches) |
|
|
|
|
|
03 | 0.075 | 0.004" to 0.007" | 0.100 to 0.180 |
|
|
|
|
05 | 0.125 | 0.0071" to .013” | .0180 to 0.330 |
|
|
|
|
10 | 0.250 | 0.0131"to 0.025" | 0.330to 0.635 |
|
|
|
|
20 | 0.500 | 0.0251" and | 0.635 and larger |
|
| larger |
|
|
|
|
|
Note: 6 mil aperture specified for UPC/EAN only.
Note: 3 mil and 20 mil aperture available in mouse wand style only.
Check your application standard's requirements for specified aperture requirements. If no aperture is specified, use the aperture that is as close to, but not larger than, 80% of the narrow element width.
The QC890 Verifier has an Automatic selection feature available ONLY for the internal optics. When using the Automatic selection feature, the verifier automatically selects from a 5, 6, or 10mil aperture. This selection is determined by the symbology (e.g., EAN/UPC selects 6mil aperture) or as determine by the internal optics’ ability to calculate the width of the narrow element and select the aperture as determined by the table above.
Quick Check® 890 User’s Guide | A - 1 |
