Altitude bug?

Brad_Olwin

@Brad_Olwin as you can see from the chart in the screenshot, altitude went from 0 to 20m and back down to 8m. So I would expect to see 20m ascent and 12m descent (while in reality I arrived at the same position where I started - but that’s a diffent issue).

Part of the altitude increase looks like FusedAlti activating. You were below 0m when you started. That is why I asked.

Dimitrios Kanellopoulos

@Egika Is that also the case with the 9 (for most sports it should be baro afaik and tested)

Egika

@Dimitrios-Kanellopoulos you mean the baro default for water sports? Yes, also the case for S9. I have messaged you about it last year quite a few times. If I recall correctly, even when set in MC to baro, the watch is still recording altitude changes - where you would expect to see altitude as a flat line (if I understand “baro only” correctly)

Egika

@Brad_Olwin said in Altitude bug?:

@Egika said in Altitude bug?:

@Brad_Olwin as you can see from the chart in the screenshot, altitude went from 0 to 20m and back down to 8m. So I would expect to see 20m ascent and 12m descent (while in reality I arrived at the same position where I started - but that’s a diffent issue).

Part of the altitude increase looks like FusedAlti activating. You were below 0m when you started. That is why I asked.

As far as I have seen FusedAlti working, it has never gradually changed the recorded altitude, but always applied an offset to the whole altitude data set (at least for short recordings, where pressure does not change much during the activity…)
I mean FusedAlti is sampling data as long until it is satisfied with accuracy and has enough data points for a GPS altitude correction. Then this correction is applied to the whole data set (even elapsed data).
SA had a bug before, where you could see the jump in altitude, when FusedAlti kicked in (and where elapsed data was not changed). But this bug is fixed afaik…

Dimitrios Kanellopoulos

@Egika FusedAlti does exactly what you said, but also will all the time correct the diff.
So if the “offset” is applied and later on Baro/Alti get out of sync (eg water etc) then it will slowly during the normal operation base more to GPS etc. It works like a Kalman filter

Egika

@Dimitrios-Kanellopoulos yeah, that’s what I expected
now it still does not explain a changing altitude in the graph and at the same time 0 ascent/descent in the stats of the S7…

Dimitrios Kanellopoulos

@Egika No for sure it doesn’t. I did look to it and found no logical explenation.

However, santa should boost you up S7 guys sooner or later so lets first all align (my S7 sw with yours). Oh I hope this make a tiny sense

Egika

@Dimitrios-Kanellopoulos yeah - makes sense now waiting excitedly…

vr2udt

@Egika I had a similar observation with SSWHRB for running, it occurred once only.

Dimitrios Kanellopoulos

@vr2udt that’s normal. No ascent or descent more than 3 meters in 12 minutes

vr2udt

@Dimitrios-Kanellopoulos Thank you

Krzysztof Gąsior

I have altitude issues on my new Suunto 7. On a flat route the altitude jumps +/- 10m. Is the sensor broken?

Saketo Nemo

did you have long sleeves or something that could rub with the barometric sensor?
Is it a problem you have in every activity?

Krzysztof Gąsior

@Saketo-Nemo Nothing rubbed the sensor. Yes, I have problem in every activity.

Here’s the test. The first 10 minutes I had watch on my wrist (indoor) and the next 20 minutes the watch was on the table.
https://quantified-self.io/user/OXpy8L57KxXh6AJ85GclTHwvwYu1/event/3cPQA91MbTn2CvY9o8zzzQy1WSXr1525fbrY9xhSHMHSXht

Saketo Nemo

@Krzysztof-Gąsior
link doesn’t works for me

Krzysztof Gąsior

@Saketo-Nemo

Dimitrios Kanellopoulos

@Krzysztof-Gąsior I see the issue there. Looks like pressure leak. Try to let it on the table, and see if it fluctuates. Then take on hand, wear it and see if it changes. (altitude).

If yes , ask for replacement unfortunately