by phildc » Tue Jul 24, 2007 8:24 pm
If the connection works, it means that you have a real serial signal, created by a microcontroller in the cable, or sometimes directly by the transmitter. This signal uses pin 2 for data on the D-Sub 9 pin connector..
A serial connection driven by interrupts on the ring pin (pin 9) would not work with a serial to usb converter.
If it is pic serial 19200 bps protocol, you can look at it with
Just select the COM port your converter uses, and do Action=start. the values are in decimal, so you will recognize the synch (x'FF') as 255, and then the various channels, until the next synch comes.
Do 'clear' to receive a new set of data whan you are ready.
Phil.