The Codabar bar code is also known as NW-7.
Codabar is a variable length code that has a space called an inter-character gap between each character. Each of the bar code's characters comprises four bars and three intervening spaces.
Codabar requires a start character (A, B, C, or D) and a stop character (A,B,C, or D) for successful reading. The specific start and stop character may vary, depending on the application.
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Specifications |
Description |
|---|---|
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Character set: |
All 10 digits (0-9) Four start/stop characters: A B C D Six additional characters: - $ : / . + |
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Length: Height: |
Variable, or fixed at 14 digits (Clinical and Laboratory Standards Institute format) |
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Data character density: |
8.33 characters per inch (based on X = 0.010 inches (0.25 millimeters), 3:1) |
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Check digit: |
None, Modulo 16, or Modulo 10 (Clinical and Laboratory Standards Institute format) |
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Quiet zone: |
Equivalent to two symbol characters |
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Composition: |
Start character (A, B, C, or D) | data | stop character (A, B, C, or D) |
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Options: |
Symbol concatenation |