8 - 68 LI2208 PRODUCT REFERENCE GUIDE
Symbology-Specific Security Levels
Redundancy Level
Parameter # 78
The linear imager offers four levels of decode redundancy. Select higher redundancy levels for decreasing
levels of bar code quality. As redundancy levels increase, the linear imager’s aggressiveness decreases.
Select the redundancy level appropriate for the bar code quality.
Redundancy Level 1
The following code types must be successfully read twice before being decoded:
Redundancy Level 2
The following code types must be successfully read twice before being decoded:
Redundancy Level 3
Code types other than the following must be successfully read twice before being decoded. The following
codes must be read three times:
Redundancy Level 4
The following code types must be successfully read three times before being decoded:
Table 8-2
Redundancy Level 1 Codes
Code Type Code Length
Codabar 8 characters or less
MSI 4 characters or less
D 2 of 5 8 characters or less
Table 8-3
Redundancy Level 2 Codes
Code Type Code Length
All All
Table 8-4
Redundancy Level 3 Codes
Code Type Code Length
MSI 4 characters or less
D 2 of 5 8 characters or less
Codabar 8 characters or less
Table 8-5
Redundancy Level 4 Codes
Code Type Code Length
All All