Hi all! I had a question before going to the mountain area! What is the altitude in the program, above sea level (absolute) or above the surface (relative)? Or is it the altitude from the point where I take off? This is a very important issue, because in the mountains very rapidly changing heights ... and sometimes there are gorges ... I need an answer so that I can set the correct altitude for RTH procedure!

Dirty Bird Posted at 2017-12-24 17:31
Its relative to the point from which you initialize.  Wherever you take off is considered 0'.

Are you sure? And if I started shooting at an altitude of 600 meters, and then went down on a bike to a height of 200 meters, then my height will be -400 meters?))

keymatrix Posted at 2017-12-24 17:42
Are you sure? And if I started shooting at an altitude of 600 meters, and then went down on a bike to a height of 200 meters, then my height will be -400 meters?))

Hi, sir. Please follow the advice in 2#. The altitude will calculate from the height you take off.

I have flown below the point of launch and can confirm that you get a negative elevation.

Ok, thank you for all!

So Spark is set at 4000 above the sea max. If I go to a mountain at 3900 I can only fly the Spark 100 meter height?

Filip3rd Posted at 2017-12-25 07:30
So Spark is set at 4000 above the sea max. If I go to a mountain at 3900 I can only fly the Spark 100 meter height?

By law or by ability? ;-)
DJI says the max starting height is 4000m, if I remember right
With max GO4 altitude, 500m, in mind, it would mean that the spark is 'tested' up to 4500m absolute flight altitude
But that is maybe only my logic!