Altimeter recordings while running

Tadas Linge

@sartoric hello, no jacket sleeve is locked with velcro lock above watch

Tadas Linge

@Brad_Olwin hello, no, i have not done any kind of reset. I will try to do it now. Thanks

Brad_Olwin

@Tadas-Linge It will remove all custom sport modes and data, you will be starting fresh so if you have custom sport modes take screenshots so you can easily restore them.

@di-gregorio-roberto Buongiorno, mi servirebbe sapere come eliminare da un sunto vertical un itinerario salvato .erroneamente ho cancellato l itinerario dall app del telefono senza accoppiarlo prima all orologio.in tal modo si è cancellato solo da telefono e non da orologio.fatemi sapere come poter fare . Grazie intanto saluti

to my knowledge if you remove the track from SA instead of disabling it and sync the watch you can no longer remove it from the watch (for now)

please mods move these posts somewhere else

Tadas Linge

@Brad_Olwin hello, so today i was running in snow storm, but surprisingly altimeter measuruments were better than ever. I gues reset did its magic. I will make couple more trial runs to be totally sure. What is more, i am in contact with Suunto distributor here in Lithuania and they told if i am not happy with altimeter, they will give me replacement watch and will take mone for investigation. I was really surprised and very happy with such offer, and also, when they are so good for me i do not want to bother them if this is just a question of reset

Brad_Olwin

@Tadas-Linge Keep us posted because the altimeter readings you were getting were poor. I have also had excellent service from Suunto. Glad this worked and hope that it solved the issues for you.

Redbeard_ranger

@Brad_Olwin Do you or any one know if the Baro in the SV is the same in the Race?

Tadas Linge

@Brad_Olwin hello,
so i have completed these 3 trial runs after hard reset. each 20 km, almost the same route. first run and the third one was same direction and second one opposite direction. unfortunately with each run altimeter readings were getting worse. and weather condition with each run was getting better. so i am totally confused here and i think i will give them to check the watch. all data in attached PDF: Suunto altitude after hard reset.pdf

Mff73

@Tadas-Linge
Looking at your pdf. Are you saying that altitude difference about 10m is something wrong? .

Mauerwegler

@Łukasz-Szmigiel said in Altimeter recordings while running:

All Suunto watches from S-series that have barometer have FusedAlti (S9B onwards).

SSU too:

Tadas Linge

@Mff73 hello, not exactly. What i see, that watch fresh after hard reset is showing really good results, but then whith each use it is getting worse.

Mff73

@Tadas-Linge
Worse? average dif from 2m to 7m? .

Tadas Linge

@Mff73 hello. Yes, so this is just average, but you also need to see point by point, because in the first run there is no deviation above 10, then in second one already one such deviations and in third one there are qoote few 12s and 13s… Dont you think it is tendency? Of course i will continue fill this table, but this is what i see now.

Iceman1

@Tadas-Linge I have tried a couple of times to set the elevation far off from the real elevation. Then I let fusedalti correct everything. When I have one this I have a nice elevation graph in the end, starting and ending within1 meter or so.

When I dont adjust, and the elevation from the start is within 10-15 meters off from the real elevation, then that difference is kept, and is not touched by fusedalti.
I understand 10-15 m is not much, but it is very noticable on flat runs.

isazi

@Iceman1 because the GPS vertical error is large-ish, calibration is only performed if deviation is substantial. If the deviation is within GPS error, the watch cannot know which one between altimeter and GPS is correct (tie-breaking with only 2 sensors is kinda impossible).

Iceman1

@isazi yes I have understood this is the way it works. I just posted a possible way to “trick” the watch, If you like.
Instead of graphs like this starting at -7 m and ending at 5m

I get graph like this starting at 7 m and ending at 8m

Redbeard_ranger

@Iceman1 Very interesting trick, How much do you off set the altitude by incorrectly? like 1000m?

Mff73

@Redbeard_ranger
with 1000m dif, you will for sure see the job of fusedalti

@Iceman1
second graph looks better, but it is also another day, so, maybe, this second day could have been better, even without the altitude offset trick.
But it opens the door to check “longer” and see. If with big initial offset, fusedalti is able to catch a “better” altitude fix than just letting it alone, it would be interesting to know. Probably this situation is already tested, but i will personnaly try

Iceman1

@Mff73 You are correct that its not really possible to compare different days. It would be interesting If somebody with two watches could try to test them parallell

Iceman1

@Redbeard_ranger I have just set it around 50-60 m off.