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CDL Programmer Manual
30
B - UPC A
This code accepts 11 characters (only numbers): in this case it calculates and adds the twelfth
checksum character. If there are already 12 characters, the printer will check that the twelfth
corresponds to the correct checksum: if it does not it will print 11 zeros and the expected checksum.
fig. 14 - UPC A bar code
C - UPC E
This code accepts 6 characters (only numbers): in this case it calculates and adds the seventh
checksum character. If there are already 7 characters, the printer will check that the seventh
corresponds to the correct checksum: if it does not it will print 6 zeros and the expected checksum.
fig. 15 - UPC E bar code
D 2 of 5 Interleaved
This variable length code, with no checksum, accepts only numbers and its nominal ratio may vary
from 2:1 to 3:1.
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