2020/4820/4820 i User’s Guide 9 - 9OCR Modulo 10 Check CharacterScan this symbol to program the OCR template for a simple modulo 10checksum of the digits 0 through 9.OCR Modulo 36 Check CharacterScan this symbol to program the OCR template for a simple modulo 36checksum of the digits 0 through 9 and the letters A through Z.OCR User-Defined Check CharacterYou can customize the check character calculation to suit your application. Eachcharacter of the check character alphabet can be programmed in its properorder. The number of characters you enter determines the modulo value for thecalculation. By default, the check character computation is unweighted, but theimage scanner also supports two weighted modulo 10 checking schemes.Example: To program a modulo 11 check character, you would enter thefollowing 11 characters in order:0123456789XAlso enter the OCR template:dddddddcEnable the OCR-A font, then scan the following string:6512351XThe image scanner performs the following check character computation:(6 + 5 + 1 + 2 +3 + 5 + 1 + X) modulo 11 = 0Since the result is zero, the message is considered to be valid, so the readeroutputs the message: 6512351OCR Modulo 10 Check CharacterOCR Modulo 36 Check Character
