SICK ICR 84x, Operating Instructions Manual

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Chapter 4 Operating instructions
ICR 84x Image Code Reader
4-4
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SICK AG · Division Auto Ident · Germany · All rights reserved 8 010 961/0000/10-05-2005
Installation
4.2.6 Distance between ICR and code
a) Basic alignment with the 2-D code/bar code
The ICR is either used with the side or front reading window, depending on the application.
Fig. 4-3 shows how the reading area is aligned with the code on the object.
b) Reading distance to code
The distance between the reading window of the ICR and the code is determined by the
fixed focus position of the ICR and the resolution-specific depth of field for the desired cell
size/module width. The distance may not exceed the total technical limits. The resolution-
specific depth of field around the focus position is shown in Chapter 9.3.2 “Reading ranges
of ICR – preliminary –“, Page 9-4 .
Fig. 4-4 shows the exact definition of the reading distance from the reading window.
The reading distance of the standard device in the focus position is 80 mm (3.15 in).
Note The size of the available reading area (surface), which is mapped in sharp focus by the ICR
in its image memory, depends on the reading distance. See Fig. 9-4, Page 9-5 .
Fig. 4-3: Alignment of the ICR reading area with the code
ICR with side reading window ICR with front reading window
Fig. 4-4: Definition of the reading distance
ICR with side reading window ICR with front reading window
All dimensions in mm (in)
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