I did an altitude test run last weekend and got to 2,503 feet as indicated on the IOS Vision app on my iPhone but the datalogger, a Flytrex, only reported 2,247 feet. I sent the info to Flytrex and they said the data from the the Phantom GPS matched the Flytrex within a couple of feet and that the 2,247 measurement was correct.
So, where is the Vision iOS app getting it's data? Anyone noticed this or have any input on reasons for the discrepancy?
The video of this is at: http://www.youtube.com/watch?v=p7Egt5_Rg-4, and I know...it's too long, I'll start editing these in the future. The top ascent is at about 4:10, the Vision App screen capture is at 13:00.
Scott...
So, where is the Vision iOS app getting it's data? Anyone noticed this or have any input on reasons for the discrepancy?
The video of this is at: http://www.youtube.com/watch?v=p7Egt5_Rg-4, and I know...it's too long, I'll start editing these in the future. The top ascent is at about 4:10, the Vision App screen capture is at 13:00.
Scott...