I Think the "Nav source lost" is the fault of some Garmin GPS's.
after charting tons of my Dynon data all I can find is the GPS sending strings of zeros (0's) that coincide with the AP dropout.
A few days ago I find this on the garmin web site----"Change History
Changes made from version 3.90 to...
Hello.
Finally got some time to look at this more. Set the EFIS & EMS to record data @3 seconds, cleared old data, set Garmin to autopilot mode, sends data every second (gprmc,gprmb,gpbwc,gpbxte,gpapb with*). Went flying, after about 10.min. Nav source lost alarm... Excel chart shows the gps...
Sorry, lost a few lines on my copy/paste. fixed. Yes this Garmin has about 5 mode combos to choose from. I'll try to fly tomorrow and see what I can document, what MNEA group holds the nav source.
Dynon, this might be of some help? I have documented the following-
The good: no nav source lost with the lower 7 sentences (yet)
$GPGLL,4725.7503,N,09223.3261,W,224254,A,A
$GPBOD,,T,,M,,
$GPVTG,11.7,T,11.6,M,0.0,N,0.0,K,A
$HCHDG,137.8,,,0.1,E...