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Altimeter Auto Calibrate During Activity

georgiawx
over 6 years ago

Just got my 945 yesterday, first activity today. This brought up a question...I see the option to set auto calibrate to continuous during an activity and that is default, and I can set it to at start, but I don’t see a way to specify if it uses GPS or DEM when it auto calibrates. Does anyone know which it uses?

Thanks,

SA 

  • Former Member
    0 Former Member over 6 years ago in reply to georgiawx

    If you normally start your workouts from the same area, you should start the activity and wait for a good GPS fix.  Usually 30 seconds after you get a green bar.  That's when you should do the manual calibration to the correct elevation and make sure you save the activity.  The next time you start an activity near that location, the watch will recognize it and start the auto cal to that elevation level.  If you're inputting bad elevation numbers prior to starting your activity near that same location, the watch won't auto cal to the previous elevation because you just changed it's "memory" with your manual calibration.  I suspect that's what you're seeing.

  • 0 over 6 years ago in reply to Former Member

    I have not set an elevation for that particular location since getting the 945, so that was not the case in this instance. Are you sure that it works like that anyway, it did not seem to on the 935 that I have used for over 2 years. I'll have to test that and see if it works because that would be great.

    SA

  • 0 over 5 years ago

    Joining the question. Autocal with gps definitelly does not work. During 8hr trip, peak has not beet measuret well diff 40m on 1468m.n.m.

  • 0 over 5 years ago in reply to Ivo

    Would you clarify please? A bit difficult to understand what you are talking about. What was the format of the''8hr trip'? Would you post a link to the recorded activity?

  • 0 over 5 years ago

    It is better to set barometer watch mode to auto barometer or altimeter to have the best accuracy during the day inside and outside the activity? I don't live in mountain but it seems that the altimeter starts to get correct values only when starting an activity with gps 

    During the  standard watch use the altimeter seems wrong, for example at the sea level I got 75m before starting a run, and then correctly 1-6 meters when I start the activity..