From your posting to the Serial Interface forum, I see you got some good advice in regards to checking cable type, baud rate, and flow control. Without knowing all of those parameters, you could spend an entire career trying all of the different combinations before finding the right one. A serial port bradkout box can help with cable issues but not with the others. If you do get information from the manufacturer and finally get it to work in hyperterminal, you could then download the gpib driver for the instrument from
here. By changing the gpib calls to VISA and probably a few other modifications, you might get it to work. The biggest
change would be to add the appropriate termination character that most serial instruments require and eliminate the GPIB RQS being done. Good luck.
