HandHeld Entertainment Quick Check ImageData Barcode Verifier Quick Check 890 - Manual (Page 31)

Quick Check® 890 User’s Guide A - 1
A
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.
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.
Aperture Diameter
(in .001”)/Aperture
Ref. No. Aperture
Diameter
(in mm) "X" Dimension
Range (in
inches)
"X" Dimension
Range (in mm)
03 0,075 0.004 to 0.007 0,102 to 0,178
05 0,125 0.0071 to .013 ,0180 to 0,330
10 0,250 0.0131 to 0.025 0,333 to 0,635
20 0,500 0.0251 and larger 0,637 and larger