Couple of questions about my Garmin 510

roubaixtom
roubaixtom Posts: 316
edited February 2015 in Road general
Hi,

Been using my Garmin 510 for a few months now and have a couple of questions. Firstly, this weekend i did a turbo session with the device monitoring HR and Cadence etc and for some reason it thought that it travelled 15 meters. Is this normal?

Also is it best to keep the device up to date? Sounds like a silly question but if Garmin are anything like Apple I'm always hesitant with their updates.

Thanks

Comments

  • freezing77
    freezing77 Posts: 731
    The reason for the distance is because of GPS inaccuracy over time. A fix may put you at position X the next fix may put you in a position 1 metre from position X the next fix may put you back exactly in position X therefore your device thinks you have moved 2 metres.
    http://www.eevblog.com/forum/chat/how-accurate-is-a-gps-1pps-signal/
  • Man Of Lard
    Man Of Lard Posts: 903
    Or of course that it gets a bogus fix indoors (example: through a window) - which is why you should disable the GPS when indoors.
  • roubaixtom
    roubaixtom Posts: 316
    Just plugged Garmin in to mac and it automatically up mated to the latest firmware without me going through any kind of set up. Is this normal?
  • freezing77
    freezing77 Posts: 731
    On a mac probably yes.
  • markhewitt1978
    markhewitt1978 Posts: 7,614
    Roubaixtom wrote:
    Firstly, this weekend i did a turbo session with the device monitoring HR and Cadence etc and for some reason it thought that it travelled 15 meters. Is this normal?

    Yes, especially when you're indoors it's try to get a GPS lock and it will often be inaccurate. I do the same tracking using my iPhone and it's usually done e.g. 0.1 miles even through I've gone nowhere.

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