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Howard - see this http://www.dynonavionics.com/docs/news_technology_preview.html Fuel Computer fuctions not enabled yet. Jake J

Wayne The best all round solutuion,IMO, is to install the backup battery, that wayyou have the clock keeping time and a 'failsafe' situation - Dynon says DO NOT use the keep alive wire. Jake J :)

Well said - for 95 % of pilots ;D Jake J

I'd suggest a lot of us, myself included, are using the 'Apollo' units ie GX 50,55,60,65 series. Jake J

........and a footer, with date/rev #, to all pages of install manuals would be a good idea I think :) Jake J

I'd turn off the audio out first, to confirm that is the source of the 'noise' and if it is then check your alarm settings etc. Jake J

I'd be checking the 'B' lead from the alternator to through the shunt. Jake J

Either way it's intermittent - I haven't seen the 330 units yet however the 327 looks very similar (rack wise) and they don't have a 'connector' issue. Maybe it just wasn't seated home properly in the first place ? ;) The only other unit that does have this rack issue is the Garmin 480. Jake J

Which wires are connected on the DB37 ? to what ? Jake J :)

It only happens when the DB37 misc sensor connector is plugged in. There is the clue - check to see that you don't have pin 1 & 2 connected to anything, if that doesn't 'fix' it then check any other 'power' (& ground) wiring. Jake J

Hi Ralph 1. 'Spiking', ie voltage drop on starting, is not an issue 2. Usually a good idea to load the latest - unless of course there are unknown bugs ;) BTW, if you have a D180 I'd add the backup battery - that way the EMS is always ON when starting. Jake J

Page 13, heading of - EFIS System components p/n 100512-000 Jake J

Bill "Lo" connection is not needed in this situation. Jake J

I think that also means disconnecting the backup battery ? Jake J

Bill That was one of the benefits of the Apollo SL70 transponder, but they don't make them anymore after the Garmin buyout :'(>:( I hope mine lasts a long time. Jake J

We shouldn't dwell on the past however Dynon did advise that there is limited functionality in the initial release and more functions will be added in time - there is a list of these on the website. http://www.dynonavionics.com/docs/news_technology_preview.html Most manufacturers release...

John Maybe I read different english down here but Revision B (you periodically check for the latest revision? ) SV install manual says - pin 29, wire color =Yellow/Green, function = Warning Light.   Page 4-11 & 13-6 gives all the necessary audio info including mention of future firmware...

It's all in the install manual, you downloaded the latest version of course ? Maybe Dynon should charge a fee for proof reading diagrams ;D Jake J

Both SV 7" and 10" displays are compatible. Jake J :)

I'm having similar issues on a composite airplane. Com 1 PTT = D120 alarms, EGT/CHT shows -99C.  System recovers and all parameters read correctly after settling down in flight. Some radio frequencies worse than others. Com 2 PTT = no issues. Swapped antennas (all coax is RG400 low loss) -...