Skview/Garmin GNS 480 setup

[rick789pb]

Great, thanks!

 

[bobl_51]

Just wondering why baro-corrected altitude from the ADAHRS, with 2D GPS lock is not sufficient to provide moving map and synvision?

We purchased a 480 for our project, thinking that the terrain awareness of the 430W was the only feature it had over the 480 and a non-issue in the Skyview system. The bigger screen, the standby COM monitor feature and the cheaper price made it seem like a better fit for working with the Skyview.

 

[dynonsupport]

You'll need to read about map datums for the full picture, but basically, GPS altitude and baro-corrected altitude aren't strictly equivalent, and the synthetic vision data is based on GPS altitude. The amount of customers that have devices that don't have a GPS that provides altitude that ALSO don't have an SV-GPS-250 (which provides altitude) is very very small, and so this hasn't been a technical issue that has needed solving. We generally recommend the SV-GPS-250 to everyone because it gets you both 5hz position data and a robust 3d position lock, but it's not strictly required if you have another device that outputs altitude.

 

[rick789pb]

After installing the Dynon SV GPS 250 in order for the map page and synthetic vision to show up on the screen, I have now lost the ability to use the Garmin 480 as my GPS 1. I have gone over and over the settings and have checked the ARINC 429 to make sure it was flashing (operating correctly) and it was! Can anyone help?
Thanks,

Rick

 

[dynonsupport]

There are a few things to check here. You might give our tech support folks a call at 425-402-0433 when you have a chance.