Compuprint 6314 CDL - Manual (Page 28)

CDL – Programmer Manual
28
fig. 12 - Font 9
2.2.2 Bar codes
Each bar code has specific characteristics that distinguish it from others. In particular some codes
have limits to their length (a higher or lower number of characters cannot be used), others have a
checksum character to make their decoding reliable, others still have limitations to the valid ASCII
characters (letters and certain “special” characters cannot be used).
All bar codes have a nominal ratio
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that guarantees reliable decoding.
In tab. 2 below, the characteristics of each of the bar codes are summarised.
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The ratio is the relationship between the large and small bars (see positions c and d in the command syntax in sect.
2.1.2.1.3 on page 19).