Motorola LS1203 用户手册

8 - 44 Symbol LS1203 Product Reference Guide

Symbology - Specific Security Levels

Redundancy Level

The scanner offers four levels of decode redundancy. Select higher redundancy levels for decreasing levels of bar
code quality. As redundancy levels increase, the scanner’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:

Table 8-2

Redundancy Level 1 Code Types

Code Type

Code Length

Codabar

8 characters or less

MSI

4 characters or less

D 2 of 5

8 characters or less

I 2 of 5

8 characters or less

Table 8-3

Redundancy Level 2 Code Types

Code Type

Code Length

All

Table 8-4

Redundancy Level 3 Code Types

Code Type

Code Length

MSI

4 characters or less

D 2 of 5

8 characters or less

I 2 of 5

8 characters or less

Codabar

8 characters or less