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MS652 User’s Manual
3.2.33 Code 128 Security Level
Code 128 bar codes are vulnerable to misdecodes, particularly when Code
128 Lengths is set to Any Length. The engine offers four levels of decode
security for Code 128 bar codes. There is an inverse relationship between
security and engine aggressiveness. Increasing the level of security can
reduce scanning aggressiveness, so select only the level of security
necessary.
• Code 128 Security Level 0 - The engine operates in its most aggressive
state, while providing sufficient security in
decoding most in-spec bar codes.
• Code 128 Security Level 1 - This option eliminates most misdecodes
while maintaining reasonable
aggressiveness.
• Code 128 Security Level 2 - This option applies greater bar code
security requirements if Security Level 1
fails to eliminate misdecodes.
• Code 128 Security Level 3 - If you selected Security Level 2, and
misdecodes still occur, select this security
level to apply the highest safety
requirements.
NOTE: Selecting this option is an extreme measure against mis-decoding severely
out-of-spec bar codes, and significantly impairs the decoding ability of the engine.
If this level of security is required, try to improve the quality of the bar codes.
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