Symbol Technologies P470 - Manual (Page 122)

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P470/370 RF Scanner Product Reference Guide
Code 39 Check Digit Verification
When enabled, this parameter checks the integrity of a Code 39 symbol to ensure it
complies with specified algorithms.
Only those Code 39 symbols which include a modulo 43 check digit are decoded when this
parameter is enabled.
ENABLE CODE 39 CHECK DIGIT
*DISABLE CODE 39 CHECK DIGIT