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Altitude Reading Incorrect

Discussion in 'Phantom 2 Vision + Help' started by Dr IDOL, Aug 3, 2014.

  1. Dr IDOL

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    Apologies in advance for double post. Have new Phantom 2 Vision +. Altitude reads -273 ft before takeoff even after running the advanced calibration. I'm thinking have an equipment fault. Would appreciate thoughts.
     
  2. CallMeAlan

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    Location:
    Newbury, UK
    I believe the altitude reading does not show above ground level, but absolute altitude. Do you live below sea level, e.g., Holland?
     
  3. Dr IDOL

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    I wish. Nebraska. 1000+ ft above sea level.
     
  4. harbourside

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    Altitude is set to the home point.
    From the manual "Altitude - vertical distance from the home point"
     
  5. N017RW

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    No it is not absolute altitude (i.e. above MSL).

    It [altitude] is based on pressure difference from the take off point/time.
     
  6. KulDar

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    I have the same problem with my vision plus. When i turn it on it will show different values in same location (between - 45 meeters to + 20 meeters). After turning on and off few times and several calibrations it can correct the values. It is brand new copter and I am thinking to send it back where I bought it. This is not a normal behavior. These parameters are important to understand real altitude and it is dangerous if they are not reliable!
     
  7. Dr IDOL

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    Thanks, all. Dealer agrees with KulDar and is going to exchange.