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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 barcode you wish to verify. This data is based on the standard ISO/IEC 15416 Barcode Print Quality Test Specification - Linear Symbols.
Aperture Diameter | Aperture | "X" Dimension | "X" Dimension | |
(in .001”)/Aperture | Diameter | Range (in | ||
Range (in mm) | ||||
Ref. No. | (in mm) | inches) | ||
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03 | 0,075 | 0.004 to 0.007 | 0,102 to 0,178 | |
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05 | 0,125 | 0.0071 to .013 | ,0180 to 0,330 | |
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10 | 0,250 | 0.0131 to 0.025 | 0,333 to 0,635 | |
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20 | 0,500 | 0.0251 and larger | 0,637 and larger | |
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Note: 6 mil aperture specified for UPC/EAN and RSS.
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 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 3, 5, 6, or 10 mil aperture. This selection is determined by the symbology (e.g., EAN/UPC selects 6 mil 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.