Security Level - Symbol LS4278 Product Reference Manual

13-50 LS4278 Product Reference Guide

Security Level

The scanner offers four levels of decode security for delta bar codes, which include the Code 128 family, UPC/EAN, and Code 93.
Select increasing levels of security for decreasing levels of bar code quality. There is an inverse relationship between security and
scanner aggressiveness, so choose only that level of security necessary for any given application.
• Security Level 0: This default setting allows the scanner to operate in its most aggressive state, while providing sufficient
security in decoding most "in-spec" bar codes.
• Security Level 1: Select this option if misdecodes occur. This security level should eliminate most misdecodes.
• Security Level 2: Select this option if Security level 1 fails to eliminate misdecodes.
• Security Level 3: If Security Level 2 was selected and misdecodes still occur, select this security level. Be advised,
selecting this option is an extreme measure against mis-decoding severely out of spec bar codes. Selecting this level of
security significantly impairs the decoding ability of the scanner. If this level of security is necessary, try to improve the
quality of the bar codes.
*Security Level 0
Security Level 2
Security Level 1
Security Level 3