JARLTECH 2008 Operation Manual page 30

Bar Code Symbologies
Code 39 Check Digit
* Disabled *
Code 39 Start/Stop Character
* Disable *
Program
28
The check digit function provides
additional security. The calculation
and transmission of the check digit
are optional.
This feature enables the transmission
of start and stop characters with the
bar code data message.
Calculated and
Transmitted
Calculated but
not Transmitted
Enable
End