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173

Code 128 Security Level

Parameter # 751 (SSI # F1h EFh)

Code 128 bar codes are vulnerable to misdecodes, particularly when Code 128 Lengths is set to Any Length. The

RS6000 offers four levels of decode security for Code 128 bar codes. There is an inverse relationship between

security and RS6000 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 RS6000 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 RS6000. 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)

Zebra RS6000 User Manual

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