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Anyone know how the ‘All Systems’ GNSS setting works?

acousticbiker
over 3 years ago

Does it select just one of the GNSS systems for any given activity based on available signal or can it chose more than one? Are the systems selected only at the beginning of the activity or is it dynamically adjusting during activities? Is it likely worth the battery hit vs the GPS-only setting (i.e., how significant are the potential accuracy gains)?

  • 0 over 3 years ago

    DCRainmaker made a good explanation in his Fenix 7 In-Depth Review.

    But the summary of it is, we no longer have a GPS-only, GPS+Galileo and GPS+GLONASS selection anymore. Now we just have GPS-only and "all systems", which uses ANY of the 5 satellite constellations (including beidou and QZSS), but I think no more than 2 at a time. It chooses which ones to use automatically, behind the scenes, based on what it thinks will work best at any given time. I interpreted his explanation to mean that it's an ongoing background process throughout the duration of the GPS activity, not just once at the beginning. But I'm not sure on that.

    Accuracy is potentially significantly better. But in actuality, we don't really know yet. DCR says its only a little better, but it might get a lot better in the future as they refine the algorithms.

  • 0 over 3 years ago in reply to C.sco

    The F7 is using the same AIROHA (MTK) chipset than the Vertix, there it is using all GNSSs (depending on this picture) at once.

  • 0 over 3 years ago

    All systems is using all available GNSS during your whole activity (as far as I know). That takes of course some more battery. For challenging conditions, it is better to use all instead of gps only for a better signal reception. You can do one course with different GNSS settings for comparing, if you see a different accuracy/performance and battery consumption.

  • 0 over 3 years ago in reply to Luko79

    Unfortunately Garmin deleted a page like above with releasing Epix (1)/F3. It was availability only for F1/2.

  • 0 over 3 years ago in reply to Luko79

    A lot of users (include me) have again and again asked Garmin to add this again on the wearables for years, but without success. As far as I remember, I never got even a response from Garmin about that.

  • 0 over 3 years ago in reply to Volker

    I would even settle for a GPS datafield that shows more than just a 4-bar signal strength meter. Like, at least show me the number of satellites or something, even if it isn't presented in a pretty map.

    The signal strength datafield is useless. 0-3 bars means you've got like 0 to 3 satellites, which isn't even enough to work. 4 bars could mean you have anywhere from 4 to 40 satellites, and without knowing how many it's actually seeing, 4 bars is meaningless.

    A "number of satellites" datafield would be huge. The value would be enormous for people who like to "soak" their GPS before an activity, it takes all the guesswork out.

    Like you, I've been asking for it for years, to no avail.

  • 0 over 3 years ago in reply to Luko79

    It is sad that Garmin couldn't make a such satellite display page in its newer watches. It isn't hard and people want it. That's how much Garmin rlistens their customers.

  • 0 over 3 years ago in reply to sis651

    To be honest they've added a ton of other stuff people have asked for, though. I don't feel like they totally ignore us. It would be great if they added everything everyone ever asked for, but I'm sure as time goes on they'll add more and more.

  • 0 over 3 years ago

    Just did my first run with multi frequency enabled, wow. Compared to Fenix 5S it is way way better accuracy (which was the exact same route yesterday).