Well, I have successfully constructect the serial cable with one problem. The framerate of FMS is approximately 30 when the transmitter is OFF, however, once ON, the framerate drops to 5!
I have changed the serial baud rate in the Windows properties to the highest setting, but no change. Any suggestions?
By the way, the serial schematic found in the FMS help file works perfectly. It solved all of my parallel port problems, and will be the perfect solution once I figure out the slow framerate problem.