175 to Trig Settings
I have never worked with GRT, but I can help if you want to just run the serial data directly to the Trig. Pick 1, 2, or 3. You will also need an altitude encoder input into a different GPS 175 serial port other than the one you used for the Trig or from the GRT into the Trig directly.
GPS 175 RS232 Port 1
Connect 175 pin 52 to Trig pin 5
Connect 175 pin 9 to Trig pin 4
GPS 175 RS232 Port 2
Connect 175 pin 51 to Trig pin 5
Connect 175 pin 8 to Trig pin 4
GPS 175 RS232 Port 3
Connect 175 pin 50 to Trig pin 5
Connect 175 pin 7 to Trig pin 4
To get into the Configuration Mode. Press and hold center knob in, then press the On button until the Garmin screen displays, then release the On button, while still pressing the small knob. Then release the small knob when the configuration Mode screen displays.
Press Setup, then Interfaces, then RS232.
Set the 175 serial port for the 175 pin out you used to Garmin ADSB+ Format 1.
Restart the 175.
On the Trig, to go into config menu, hold the FN button while turning the unit on.
Go down to GPS Input and select ADSB+ and set GPS/TIS Rate to 9600.
If you need more info, you can email me at
[email protected], and I will try to help.
Brian
There also is a Trig 22 setup supplement in the Document section.
https://grtavionics.com/miscellaneous-documentation/ It is towards the bottom of the page.
There is also a firmware update for the Trig 22 to allow more GPS compatibility.
https://grtavionics.com/miscellaneous-software/ It is the last item on the list. Check that out also.