Centering
Use the centering feature to narrow the imager’s field of view to make sure that the imager reads only those bar codes intended by the user. For instance, if multiple codes are placed closely together, centering will insure that only the desired codes are read. When centering is turned on, the imager only reads codes that intersect the centering window set up by the user. The centering window must intersect the center of the image. If a bar code is not within the predefined window, it will not be decoded or output by the scanner.
If centering is turned on by scanning the On bar code below, the default centering window is a 60 pixel square area in the center of the imager’s field of view. The position of the window may be changed by scanning the top, bottom, left, and right centering bar codes that follow and the appropriate pixel value, if other than the default, from the Programming Chart in the back of this manual. The defaults are listed in the table below.
Window Position | Default | Minimum | Maximum | Serial Command | |
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Top of centering | 210 | 000 | 239 | DECTPYxxx | |
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Bottom of center- | 270 | 240 | 479 | DECBTYxxx | |
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Left of centering | 290 | 0 | 319 | DECTPXxxx | |
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Right of centering | 350 | 320 | 639 | DECBTXxxx | |
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The centering function can be used in conjunction with the Aimer Delay feature (page
On | * Off |
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