AML M2500 Decoder - Manual (Page 64)

2. Sum all of the numerical values for each data character in the bar code.
3. Divide this sum by 43.
4. The remainder is the numerical value for the check digit. Use the table in
step 1 to look-up the corresponding character.
EXAMPLE: Sample Code 39 data = A394T
1. Use the table to lookup the numerical value for each character.
2. 10 + 3 + 9 + 4 + 29 = 55
3. 55 / 43 = 1 remainder 12
4. Check digit numerical value = 12
The check digit = C.
Bar code with check digit = A394TC
C - 3