Suunto vertical ascent/ descent totally incorrect

maszop

@Mff73 If it works with microphones, maybe it will also be suitable for watches

Tieutieu

Strange about wind effect : I have used my vertical several times in very windy conditions and never observed such elevation errors.

(I didn’t know where to put this so I put it here : I wanted to notice that SV works awesomely well under clothes/gloves, even in very cold weather with big gloves + 3 layers => that’s a point I wanted to notice. My A3P and my S9b were very poor in this case with elevations errors and GPS accuracy loss).

maszop

@Tieutieu Vertical and the previously used 9PP measure point height very accurately. No issues with that.
The problem is with these spikes visible on the chart - sudden, small, but very frequent changes in elevation.

Tieutieu

@maszop I had perfectly understood that issue => never had such behaviour even in very windy conditions

Mff73

@maszop
and the last solution would be also to consider your watch as faulty.
it is not nice, but sometimes it may happen.
years ago i had issues with my spartan ultra, searching for all possible solutions about baro issues and ascent/descent.
RMA one day, and baro sensor was faulty : new watch never had any issues.
(not related to wind though).

maszop

@Mff73 Two watches are faulty?
9PP and Vertical, maybe, but very hard to believe.
Maybe I can test another Vertical very soon.

surfboomerang

Back in the days when I still owned a S9B, altitude was still recorded for windsurfing activities. The altiude graph went all over the place and I ended up with hundereds of meters of ascend and descend values. The graph above looks very clean. Nothing like the graphs I saw when it was influenced by the wind.
Maybe the algorithm changed over the years, but I don’t know if wind is the issue this time.

maszop

@surfboomerang Something has changed because my problems started with 9 Peak Pro. Previously, in the case of Traverse and 9 Baro, despite much lower accuracy, there was no such disaster.

r00bbo

Hi!
I have encountered the same issue. On an extremely windy day, my 9 Peak Pro reported an elevation of 2400m when the hike (validated with my partner’s Garmin) was around 1100m.
This is the first time I have experienced such a disparity, hiking or cycling.

Brad_Olwin

@r00bbo said in Suunto vertical ascent/ descent totally incorrect:

Hi!
I have encountered the same issue. On an extremely windy day, my 9 Peak Pro reported an elevation of 2400m when the hike (validated with my partner’s Garmin) was around 1100m.
This is the first time I have experienced such a disparity, hiking or cycling.

https://forum.suunto.com/topic/9960/more-faq?_=1719606955631

Archi Mendel

Just had a hike with a 1000-meter ascend, and my Suunto Vertical logged 1950 meters of altitude gain. It was quite windy, so this might be the reason. What I don’t get is: wind is a problem + covered by clothing is a problem.

How does Suunto expect me to solve this problem if both requirements—to hide from the wind and not cover with clothing—are conflicting?

I’m disappointed, to say the least. I would rather use GPS-based altitude gain data than the one Suunto provides. This 2x altitude gain is simply not usable—it messes my records and the track that I publish.

There are quite a few posts with a similar problem in this forum. Is Suunto planning to introduce any firmware update that, maybe, will use GPS and barometer data to somehow detect anomaly data?

Brad_Olwin

@Archi-Mendel I have reported this to Suunto and provided extensive logs and files. Others have contributed as well. I am confident they are working on some sort of solution. Several sites will correct your data and you can manually change the elevation gain/loss in SA.

Dimitrios Kanellopoulos

I think it’s not a real problem the wind or the jacket if the sensor whole is stress free for the vertical specifically. Stress free = no sweat, water, or debris ie dirt etc inside the sensor.

thanasis

@Dimitrios-Kanellopoulos said in Suunto vertical ascent/ descent totally incorrect:

I think it’s not a real problem the wind or the jacket if the sensor whole is stress free for the vertical specifically. Stress free = no sweat, water, or debris ie dirt etc inside the sensor.

i once submerged the watch into the river while hiking and changed the ancent by 1500Meters. it was exceptional for strava that i “managed” such a a fast ascent -descent

Eduardo Lacerda

Any updates to this? any ways to mitigate the issue?

v.sacre

I am interested as well on this topic.
Since several weeks, my Vertical is quite inconsistent with elevation data.
There are a lot of mini variations that I can see using the vertical speed field for exemple.

When going uphill, I see that vertical speed fluctuate from positive to negative.

This leads to wrong elevation data. Often 2-3 times what elevation data should be.

Reading this topic, I still not understand if it is a bug or something going wrong with the watch itself.
You often ask if we have cleaned the baro sensor. How can we do this ?

isazi

@v.sacre how old your Vertical is? Could be just a clogged/dirty baro hole, or the sensor that is failing

v.sacre

@isazi I bought it directly so a bit more than 2 years old.
I always wear it so possible to it is not super clean but I cannot see anything special in the two holes underneath “suunto” label.
How can we clean this ?

isazi

@v.sacre try with some warm (not hot) water, but do not put anything inside the holes. My baro sensor failed when the watch was almost two years old, sent it in for repair and had the sensor replaced. Since then it is working fantastic again

v.sacre

Here is an example during this lunch gravel ride. Dual capture comparing Suunto Vertical (worn under arm sleeves) with Garmin Edge 1040 elevation data.
If global d+/d- is roughly the same, there are some big discrepancies between the two. And regarding the terrain, elevation data of Garmin is more representative.