Vuquest 3320g User Guide 51
Centering
Use Centering to narrow the scanner’s field of view to make sure that when the
scanner is hand-held, it reads only those barcodes intended by the user. For
instance, if multiple codes are placed closely together, centering will insure that
only the desired codes are read. (Centering can be used in conjunction with Aimer
Delay (see page 50), for the most error-free operation in applications where
multiple codes are spaced closely together. Using the Aimer Delay and Centering
features, the scanner can emulate the operation of older systems, such as linear
laser barcode scanners.)
Note: To adjust centering when the scanner is in Presentation Mode, see Presentation
Centering on page 42.
If a barcode is not touched by a predefined window, it will not be decoded or output
by the scanner. If Centering On is checked, the scanner only reads codes that pass
through the centering window you specify using the Top of Centering Window,
Bottom of Centering Window, Left, and Right of Centering Window selections.
In the example below, the white box is the centering window. The centering window
has been set to 20% left, 30% right, 8% top, and 25% bottom. Since Barcode 1
passes through the centering window, it will be read. Barcode 2 does not pass
through the centering window, so it will not be read.
Note: A barcode needs only to be touched by the centering window in order to be read. It
does not need to pass completely through the centering window.
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Barcode 1
Barcode 2
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