September 11, 2005

I’ve been chatting to Bob on the phone some this week, in an effort to figure out this strange phenomenon. He couldn’t understand why the EFIS 1 was getting all the info it needed, but wouldn’t put out the display. I’m baffled too, so what I plan to do is this….

I’m going to try to find an avionics test set to see how the EFIS 1 reacts to the SL-30 analogue outputs. If this works as desired, then the GX-60 must be doing something funny with it’s outputs that we don’t know about. I think this will prompt a call to Garmin to find out why.> > If I cannot find a resolution to the problem, I’ll be doing some cheating, and applying a small voltage to the NAV Valid flag into the EFIS all the time. This will then make it think everything is great, and force the CDI display. I can’t really see too much of an issue doing this for the outputs from the GPS, but I’m hoping that the SL-30 behaves, and I don’t need the cheat for the SL’s outputs. We’ll see how it goes.> > If anybody out there can see an issue with fooling the E1 into displaying the CDI, let me know! Thanks!