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10 - imager field of view and resolution, Sxga imaging area – Code CR2 User Manual

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C001537_18_CR2_User_Manual

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1.10 - Imager Field of View and Resolution

The CR2’s dual field optical system may be modified based on your scanning environment. The CR2’s megapixel imager
may be set to the following three modes:

The 1.3 Million Pixel imager is divided into near field and far field decode zones. In each zone the resolution is 1024 x 640
pixels (see Figure 1.25). In this mode of operation the reader utilizes the highest resolution creating the widest working
range on bar code and 2-dimensional symbols of all densities. The trade-off is the amount of time the reader spends
processing the image. This time can be reduced by optimization functions:

If only the near field is used (small symbols), the far field image can be ignored. If only the far field is used (large
symbols), the near field can be ignored. Further optimization may be obtained by "windowing" the field to a smaller area.
Each focal area may be narrowed by enabling the windowing feature found in section 5.2.

SXGA Imaging Area

Figure 1.25