8 - 10 4800p 2D Imager User’s Guide2. Enter the characters in order. For each character, look up the correspondinghex value from the ASCII Conversion Chart (Code Page 1252), page A-4.Use the Programming Chart on the inside the back cover of this manual toscan the two symbols for each hex value.3. Scan the Save bar code on the inside back cover.Example: To program the modulo 11 check character from example #8 onpage 8-9, enable the OCR-A font. Scan the Enter OCR CheckCharacter bar code on page 8-9, then scan the following hex valuesin order:3031323334353637383958After you enter all the desired hex values, scan the Save bar code on theinside back cover of this manual.Weighting OptionsBy default, the check character computation is unweighted. It is possible to useone of two weighted modulo 10 schemes. Weighting is often used to detect iftwo neighboring characters are transposed, a common error when an operatorkeys in data.3-1-3-1 Weighted Modulo 10 Check CharacterStarting with the check character and working backward through the message,the imager applies a multiplier of 1, then 3, then 1, then 3, and so on. This is thechecking scheme used in many EAN•UCC symbologies, including U.P.C. andInterleaved 2 of 5 (when a check digit is invoked). To apply this weightingscheme, set the OCR check character to “0123456789x3x1” or scan thefollowing symbol:Example: Scan the 3-1-3-1 Weighted Modulo 10 Check Character symbol. Alsoenter the OCR template:dddddddcThen scan the string below:01234565The reader performs the check character computation below:(0 x 3 + 1 x 1 + 2 x 3 + 3 x 1 + 4 x 3 + 5 x 1 + 6 x 3 + 5 x 1) modulo 10 = 03-1-3-1 Weighted Modulo 10Check Character
