Motorola DS4800 Series, Product Reference Manual

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6 - 30 DS4800 Series Corded Digital Imager Product Reference Guide
Code 128 Security Level
Parameter # 751
Code 128 bar codes are vulnerable to misdecodes, particularly when Code 128 Lengths is set to Any Length .
The imager offers four levels of decode security for Code 128 bar codes. There is an inverse relationship
between security and imager aggressiveness. Increasing the level of security can reduce scanning
aggressiveness, so select only the level of security necessary.
•
Code 128 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.
•
Code 128 Security Level 1: A bar code must be successfully read twice, and satisfy certain safety
requirements before being decoded. This default setting eliminates most misdecodes.
•
Code 128 Security Level 2: Select this option with greater bar code security requirements if Security
Level 1 fails to eliminate misdecodes.
•
Code 128Security Level 3: If you selected Security Level 2 , and misdecodes still occur, select this
security level to apply the highest safety requirements. A bar code must be successfully read three times
before being decoded.
NOTE
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 required, try to improve the quality of the bar codes.
Code 128Security Level 0
(0)
*
Code 128 Security Level 1
(1)
Code 128 Security Level 2
(2)
Code 128 Security Level 3
(3)