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M3000 Portable Bar Code Reader User's Guide

A - 10

APPENDIX G - CODABAR SPECIFICATIONS

The Codabar bar code symbology is a numeric code (0 - 9) that also contains six special characters

and four start/stop characters. The start/stop characters may or may not be transmitted. Characters

are constructed of four bars and three spaces. Codabar is commonly used in libraries, blood banks,

cotton industry, and the transportation industry.

CHARACTERISTICS:

Character Set: 10 digits (0 - 9)

6 special characters (- $ : / . +)

4 stop/start characters (a b c d)

Symbol Length: Variable

Check Digit: Optional

Bi-directional Decoding: Yes

Maximum Density: 12.8 char./inch (using .0075 inch narrow element)

CHARACTER SET:

The following table illustrates the data patterns. A "1" represents a wide bar or space and a "0"

represents a narrow bar or space.

A123456B

CHARACTER PATTERN

0 0000011

1 0000110

2 0001001

3 1100000

4 0010010

5 1000010

6 0100001

7 0100100

8 0110000

9 1001000

- 0001100

$ 0011000

: 1000101

/ 1010001

. 1010100

+ 0010101

a 0011010

b 0101001

c 0001011

d 0001110

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 155 156

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AML M3000 Guía de usuario Pagina 141