Datalogic Scanning MAGELLAN 8500 - Manual (Page 267)

Product Reference Guide 6-161
UPC-A and EAN-13 Decoding Levels — continued
Remember to cover any unused bar codes on this and the facing page to
ensure that the scanner reads only the bar code you intend to scan.
UPC-A/EAN-13 DECODING LEVELS = MODERATELY AGGRESSIVE
UPC-A/EAN-13 DECODING LEVELS = VERY AGGRESSIVE