Download SICK ICR890 Operating instructions

Operating Instructions
Product description
Chapter 3
ICR890
3.6
Impacts on the reading quality
The image/reading quality of the ICD890 Camera is affected by the resolution across the
direction of transport (pixel resolution, dpi) and the resolution in the direction of transport
(line resolution, lpi). A quadratic resolution is selected in the default setting (dpi = lpi).
Max. pixel resolution across the direction of transport
Resolution on the object (dpi)
The pixel resolution across the direction of transport depends on the reading distance to the
object. Fig. 3-15 shows the curve gradient for the standard 135 mm (5.32 in) lens and the
CCD with 8,192 pixels.
CCD line
Reading distance (mm)
dpi = dots per inch
Fig. 3-15:
Pixel resolution across the direction of transport (standard device, 135 mm (5.32 in) lens)
Max. line resolution in the direction of transport
Resolution on the object (lpi)
The line resolution in the direction of transport depends on the conveyor speed. Fig. 3-16
shows the curve gradient for the standard 135 mm (5.32 in) lens and the CCD with 8,192
pixels with a max. line rate of 19.1 kHz.
CCD line
lpi = line per inch
Fig. 3-16:
Conveyor speed (m/s)
Line resolution in the direction of transport (standard device, 8,192 pixels CCD sensor)
8011325/0000/2006-10-24
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