Motorola MS4404 用户手册

Symbologies 11 - 75

The imager 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 imager aggressiveness, so choose only that level of security necessary for any 
given application.

Security Level 0: This setting allows the imager 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 default setting 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 imager. If this level of security is 
necessary, try to improve the quality of the bar codes.