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Technical Support / USB RS232 cable tail - number of wires to connect to TT31 Txpndr?
« on: March 25, 2019, 10:08:36 pm »
Trig TT31 fitted some time ago working fine. When installed asked my avionics engineer to fit an RS232 cable into the rear Secondary Interface - Pinout #3 GPS Position In slot. I did this in anticipation of getting PAW in the future. That future is now and I've bought a FTDI USB A-RS232 serial converter to attach to the previously installed cable neatly coiled ready behind the panel.
Problem; the new cable has 6 wires but the existing tail hasn't. I've obtained the data sheet and sent it to my engineer who has replied with this.
Hi ok got this fine. Not sure what you are plugging the USB into so assume it only uses RS 232 data out with a common ground. Will it use a known common protocol for both units? And there is no CTS RTS out, so I'm assuming it dosen't need it?
I'd like to say yes in answer but can anyone reassure me or put me straight please?
Thanks
Problem; the new cable has 6 wires but the existing tail hasn't. I've obtained the data sheet and sent it to my engineer who has replied with this.
Hi ok got this fine. Not sure what you are plugging the USB into so assume it only uses RS 232 data out with a common ground. Will it use a known common protocol for both units? And there is no CTS RTS out, so I'm assuming it dosen't need it?
I'd like to say yes in answer but can anyone reassure me or put me straight please?
Thanks