Hooked up GTN Serial Input

No pictures tonight, but I hooked up one of the GTN serial inputs to one of the SkyView serial outputs so that the SkyView can share traffic information with the SkyView.  I configured the SkyView to output TIS traffic, but it wasn't clear how to configure the GTN to receive the traffic. I tried configuring it as a GTX with TIS, but then it wanted to put a transponder control box on the screen (though it had a red X through it).  I'll need to ask on the Dynon forums to see if anyone has any ideas.