Worth Data 802 RF Betriebsanweisung PDF herunterladen (Seite 24)

Chapter 7 • Code 39 and Code 128

Code 39

Code 39 (or Code 3 of 9) is the de facto standard of non-

retail American industry. It is widely used in the automotive

industry (AIAG specifications) as well as in government

and military applications (LOGMARS specifications). Code

39 is flexible, features a large character set, variable data

length and density, and bi-directional readability. Code 39 is extremely accu-

rate; substitution errors are almost nonexistent. Its character set consists of

numbers 0 through 9, upper case A-Z, and characters Space, $, %. / + and -

The name "Code 39" comes from both the fact that its character set origi-

nally contained 39 characters (it now has 43) and from its structure. Each

character is formed of three wide and six narrow elements, made up of five

bars and four spaces. Code 39's density can vary from a low of .75 charac-

ters per inch (cpi) to a high of 9.4 cpi. There should be a ¼" "quiet zone"

(white space) to the left and right of the bar code.

Code 39 uses an asterisk (*) as a start and stop character. This character

must precede and follow the data in the bar code. KwikCount RF will auto-

matically add this start/stop character to your bar code data.

Exact specifications for Code 39 can be obtained from ANSI at the address

below:

American National Standards Institute

Customer Service

11 West 42nd St.

New York, NY 10036

http://web.ansi.org

document ISO/IEC 16388:1999

See website for cost

*123*

1 2 ... 19 20 21 22 23 24 25 26 27 28

Keine Kommentare

Worth Data 802 RF Betriebsanweisung Seite 24