Pros/Cons of Suunto 9 BARO * ONLY * be fair and polite!

freeheeler

@zhang965
I live in a neutral country, I just say what I see

from scientific point of view there is nothing wrong to check and compare the truth.
Ok, it is not a representative analysis… this might take a bit longer.
But it’s nice to have two watches and to check and verify what’s discussed in here.

freeheeler

here’s another comparison of S9B and A3PS. Both watches in performance/Best GPS mode and GPS only.
Both tracks have some offsets on different sections.
During the pauses (they were quite short this time and pause button was not pressed) the watches did not freak out and started counting unwanted distance. S9B showed – in pace field during the my pauses while A3PS showed some min/km.
I see that S9B still has some pace spikes during the activity and A3PS had one major pace spike. But it’s not as bad as with my last test. This is by the way not visible in Strava and SA. QS is very precise in this case.

I think the best improvement is the total ascent. My activity was one big climb at start and then one slightely interrupted descent and then rolling terrain until the end. 7m difference is about 1% and more than acceptable for this type of profile in my opinion.

https://quantified-self.io/user/jBm0qOhihUMykVYD8HBJMshQrJc2/event/sqZJQxrQ2Ufl53ioUXVe

pilleus

@TELE-HO said in Pros/Cons of Suunto 9 BARO * ONLY * be fair and polite!:

here’s another comparison of S9B and A3PS

And another one. A stop for the Ambit 3 is not a stop for the S9B. 4 minutes difference in moving time is not okay. And the difference in the ascent is not okay too. I recorded the ride additional with an Amazfit GTS and the results are quite close to the Ambit 3. Astonishing.

https://beta.quantified-self.io/user/0ntwZkfvMLhji8GViw3t4alT3py1/event/oGjg8f0QmDgo5jmyIDXb

surfboomerang

@TELE-HO said in Pros/Cons of Suunto 9 BARO * ONLY * be fair and polite!:

I tested today S9B vs A3PS in direct comparison on a family “hike” with a lot of playground and icecream pitstops…
what I notice is that A3PS has a calmer recording. I saw couple of times while just sitting in the sun (I did not hit pause by purpose!) that S9B keeps showing some speed and adds up distance.
https://app.suunto.com/move/skiingone/5db447fb17683a1f54482a7f

I think you face the same problem as I do with the S9 Baro. The speed wobbles a lot which, in my opinion, is due to a bad signal reception or GNSS algorithm. This adds some distance to the total track
https://forum.suunto.com/topic/1711/suunto-9-highly-inaccurate-speed-readings/43

freeheeler

@surfboomerang
I see that it has improved. The distance is reasonable and differs minor to the distance of A3PS recording.
It was an issue, it has improved. If it is good ebough, I will check in the next month with slow moving activity on skis.
But for me it’s going absolutely in the right direction

freeheeler

@pilleus agree, your recording of the alti graph looks a bit worse than mine.

I think we must not forget that also sensors have tolerance.
I’m by far not a top athlete but from my personality quite demanding. For me it’s fine as it was today.

Shrek3k

@sartoric I am rather late to join the visibility part of the discussion. For me I more or less solved the issue by simply switching the mode under options to light, also that I have dark numbers on a light background, which improves visibility (for me) vastly, even when the backlight is inactive and the sunlight no longer / still not that bright.

freeheeler

… just compared my wifes and sister in laws half marathon track recordings from last week.
one A3R and one A3PS.
Both are a bit offset… and from a distance it roughly looks like same accuracy as S9B…
every device receives satellite data and calculates individually… this makes me think that it is nice to compare A3PS vs S9B directly but we should not judge too critical…

… I mean… please correct me if I’m wrong, but the satellites are located more or less half way to the moon… 1m accuracy is like if you would want to shoot a football from the moon into a goal in whatever stadium, isn’t it?!

pilleus

@TELE-HO said in Pros/Cons of Suunto 9 BARO * ONLY * be fair and polite!:

it is nice to compare A3PS vs S9B

Yes, it is. And in all cases the tracks of the Ambit 3 are better. More accurate, more precise.

freeheeler

@pilleus
but when I checked A3R vs A3PS they also differ… it’s hard to quantify but it is a measuring system and it has tolerance. That’s my point of view.

here are two tracks of the same skitour, both with A3PS… first how it should be, second when recording is crap… even A3PS hast its weak days

edit: if you follow the second track you’ll fall over a not insignificant cliff…

freeheeler

here another comparison of 3 circles in my backyard

https://quantified-self.io/user/jBm0qOhihUMykVYD8HBJMshQrJc2/event/Z3fjts8jvu1Dafbn6g1b

zhang965

@TELE-HO your backyard looks like a dildo???

freeheeler

@zhang965

yes that’s what’s left after they built some roads and houses

sartoric

@TELE-HO said in Pros/Cons of Suunto 9 BARO * ONLY * be fair and polite!:

@zhang965

yes that’s what’s left after they built some roads and houses

Well, I guess it’s not funny to have a dildo in you backyard

freeheeler

@sartoric
… and I tell my kids not to draw stupid things with chalk on the streets…

Fenr1r

@TELE-HO My theology is a bit rusty but if drawing, carving and/or gardening giant wangs is supposed to appeal to gods of fertility, what does outlining a massive vibrator get you?

freeheeler

@Fenr1r
I didn’t do this for myself but for others in need as I am a giving person

Fenr1r

@TELE-HO Bravo. And as you give, so should you receive. What goes around, comes around. Etc.

freeheeler

@Fenr1r

freeheeler

here’s another comparison of S9B vs A3PS with same settings. This time the chest strap was connected to A3PS and OHR was used with S9B to check for differences between the two types of HR measuring.
At home I’ve changed manually by purpose the altitude to the wrong value of around 650m in both watches to check what they do with FusedAlti.
S9B got a start alti of 481m, A3PS has 472m. The total ascent of S9B was 146m and A3PS 159m.
Swiss Topo Map shows at my start point 472m.
The alti profile of both recordings look similar, and the offset from start is constant throughout the activities. I don’t know why S9B shows a more nervous graph but still has less meters total ascent. Does it measure the alti more often?! A3PS looks much “smoother”.
Distance S9B: 7.74km, A3PS: 7.79m.
Between km 3 and 4 I purposely went once around a big tree… S9B did not recognize this circle, A3PS did.

The HR graph in my opinion is differing, too. But for me it’s good enough. In general I will use the strap anyway, because of less battery consumption and better measuring precision. I noticed that S9B was often a bit higher and took longer time to show lower HR values when the trail changed from up to downhill.

It’s interesting to see these differences… BUT I must say that I would believe both.
The start altitude of A3PS nailed it… could be coincidence or pure precision

https://quantified-self.io/user/jBm0qOhihUMykVYD8HBJMshQrJc2/event/A60PtzTC8ofZ20ZyQpqZ