Hand Held Products 2D IMAGER 4800P - Manual (Page 120)

8 - 8 4800p 2D Imager User’s Guide
OCR Check Character
You may want to print and verify a check character in order to enhance the
security of your OCR application. The imager can be programmed for almost any
type of check character. A number of presets are provided for common check
character uses (e.g., modulo 10 and modulo 36).
Scan the OCR Modulo 10 or OCR Modulo 36 Check Character bar code to
specify the type of check character used in the OCR strings you’re scanning.
The imager will then only read OCR character strings with a valid check
character. The imager transmits the OCR data without the check character data.
You must specify the location of the check character in the template with a
c.
Example: You need to read any combination of seven digits, with a modulo 10
check character in the eighth position. The template would be:
dddddddc
To create this template, you would enable the OCR-A font. Scan the Modulo
10 Check Character symbol. Then scan the Enter OCR Template symbol,
and scan the
d from the OCR Programming Chart seven times, and scan the
c once. Scan Save OCR Template ( page 8-14 ). This template will let you
read any combination of six digits with a correct check character after. (If the
check character is invalid, the data is discarded.) For example, the following
string could be scanned:
01234569
and the output would be: 0123456
OCR Modulo 10 Check Character
Scan this symbol to program the OCR template for a simple modulo 10
checksum of the digits 0 through 9.
OCR Modulo 10 Check Character