Datalogic Magellan 8300 Product Reference Manual page 151

Scale Features
Scale Enforced Zero Return (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.
SCALE ENFORCED ZERO RETURN =
NON-ZERO FOR 2 MINUTES OR BELOW ZERO
SCALE ENFORCED ZERO RETURN = NON-ZERO FOR 2 MINUTES OR BELOW ZERO
OR NO ZERO BETWEEN WEIGHTS
Product Reference Guide 139