On Monday, May 6, 2013 3:17:31 PM UTC-7, Pete Startup wrote:
I think I can help you with this one as I've had the same problem myself and it's driven me nuts but it's now sorted with help from Andrej. I bet you're using an external GPS on Comm 4 and have Use backup GPS checked in HardwareSettings? You must UNCHECK Use backup GPS and while you're there uncheck Use GPS forwarding which is an LNav only thing. There's a conflict in there somewhere that causes the backup GPS to kick in every time it sees the slightest degradation of Primary GPS signal, even if it's only momentary, so it then cannot make it's mind up which to use and you end up with this continuous and very annoying bouncing backwards and forwards between the two. If your using a good primary GPS input you don't need the backup facility anyway. I've now had several weeks of trouble free operation after suffering this problem on almost every flight. Garmin 2+/ LX Nav V&/Oudie 2 at 4800baud.

Why are you running the V7 oudie combo at 4800 Baud.

Configure the Garmin as fast as it will go but less than the Oudie.
Set the Oudie as fast as possible at least 115,200.

Make sure use backup GPS and GPS Forwardign is unchecked.


Richard
www.craggyaero.com