User's Guide

38 HH1800 User Guide
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, page 47, 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 a stand, see Presentation Centering (page38).
Single Code Centering
Scan Single Code Centering to target the barcode closest to the center of the image. Singling
out a barcode in this manner increases scanning accuracy when there are multiple barcodes
close together.
Single Code Centering
Custom Centering
Use the following settings to customize your centering window. If a barcode is not touched by
a predefined window, it will not be decoded or output by the scanner. If centering is turned
on by scanning Centering On, 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 barcodes.
Example:
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.