I was trying to get TAC32 to talk to my Z3801A, and no luck. I have HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at 19200,7 bits and odd parity. Incidentally I modified the Z3801A to be RS232, if that makes a difference How do I convince TAC32 to connect to my Z3801A Any help appreciated Bill K7NOM