Code 39 is discrete, variable length, and self-checking. The character set is uppercase A to Z, 0 to 9, dollar sign ($), period (.), slash (/), percent (%), space ( ), plus (+), and minus (-).
If Codablock A is enabled, you cannot enable Code 39. For best results, disable Codablock A before you enable Code 39. If Codablock is enabled, Code 39 will not be decoded properly.
You can set these parameters for Code 39: