FX and ADSB Out

[Sean McDonald]

Hi folks,

How does one go about setting up ADSB Out on FX?

Mine has just arrived I thought (or probably not thought very well at all) it would be a case of using the existing Rosetta cables for everything. ADSB for Rosetta is connected via USB. What do I need to do to connect to FX and into which socket?

TIA

Sean

[steveu]

AIUI there is no GPS location feed output for ADS-B for transponders from the FX...

The two RJ45s are for FLARM in/out...

[PaulSS]

I think Steve is correct. I have successfully used the serial output of the FX to provide traffic to my Dynon HDX but I tried to input GPS from the HDX (to save having so many GPS antennas around) and it didn't work. To my mind, if it's not going to accept GPS in then GPS out is unlikely.

Edited to add: strange that it will use the GPS from a Flarm unit's feed if that is plugged in but it won't use a dedicated GPS feed from the Dynon kit 

[steveu]

Edited to add: strange that it will use the GPS from a Flarm unit's feed if that is plugged in but it won't use a dedicated GPS feed from the Dynon kit 

The input feed involves traffic, so likely to be some version of the FLARM protocol. It must be so, as it's an interrupted feed to a FLARM display.

GPS data is normally exchanged as some variant of the NMEA protocol.

Very different, and the latter unlikely to be subject to NDAs.

[Sean McDonald]

What then in the purpose of this cable?

https://www.gps.co.uk/product/pilotaware-fx-cable/

Have I taken a backward step trading all the considerably impressive upgrades that FX offers for then not having ADSB Out on my Trig Transponder? And what will I need to do to the transponder to ensure functionality? Bear in mind I'm not terribly technically minded.....

[steveu]

What then in the purpose of this cable?

https://www.gps.co.uk/product/pilotaware-fx-cable/

Have I taken a backward step trading all the considerably impressive upgrades that FX offers for then not having ADSB Out on my Trig Transponder? And what will I need to do to the transponder to ensure functionality? Bear in mind I'm not terribly technically minded.....

I looked at it and I couldn't see any instructions.

AFAIK, the Trig has a number of protocols you can set to receive ADS-B in GPS info.

You need to find the instructions that tell you what protocol to set?

My FX has output settings for Trig, so you could try that and see if you get anything.

In settings, drop down RS232 protocol, and set the Trig protocol and whatever baud goes with that.

I think this is new - when I first used te FX early this year I don't remember it?

[A_Vinning33]

Hi Sean,

Here are some instructions for connecting FX to a TRIG TT21/TT22
https://www.pilotaware.com/kb/fx/device-integration#TRIG%20TT21%2F22

Kind Regards,

Ashley

[Sean McDonald]

Hi Ashley,

So it WILL do ADSB out then? 

If that is the case is it possible to remove the USB connector currently in my Rosetta and re-wire with a RS232 connector? And therefore leave the DSub connector on the Trig box as currently wired?

Sean

[PaulSS]

Yes, Sean, you can do that. Simply cut off the USB plug that is currently plugged into your Rosetta and then splice the Pin 5 wire from the FX onto the orange wire that is currently connected to your TT21 Dsub and do the same with one of the FX grounds.

This is exactly what I did when I pushed traffic from my FX to the Dynon HDX. It previously had the FTDI USB to serial converted plugged into the Rosetta and then into the HDX Dsub. Instead of taking the Dsub apart and employ my awful soldering skills, I just spliced FX RS232 Tx to the orange wire that was on the FTDI USB.

Your TT21 is probably already set up for GPS in via the NMEA 0183, so just make sure the two baud rates are the same and you'll have ADSB Out from your TT21.

[Sean McDonald]

Thanks Paul. Will have a look further and test the wiring skills!

[Sean McDonald]

Just getting round to wiring the FX to Trig. Have cut off the USB that was inserted in the Rosetta and have identified the orange wire, transponder input and black wire, ground. Going to splice these into the flat 6 core data cable supplied with the FX which I have stripped and ready.

However instructions here https://www.pilotaware.com/kb/fx/device-integration#TRIG%20TT21%2F22 which Ashley has pointed me to refer to an 8 pin plug - unless I'm missing something obvious?

Is there a diagram for the 6 core wiring or colour code?

TIA

[PaulSS]

Hi Sean,

See below for the wires I used......that work.

[Sean McDonald]

Thank you Paul

[Sean McDonald]

Just a belated update as changing prop so not been flying as it won't leave the ground without one. But as far as I can see my cable splicing has been successful and hopefully ADSB is working. Thanks for all the help