Fenix 6X Pro GPS and altitude problems

Oh, alright. Thanks for your answer. I think I will just have to accept the readings, usually it is within +-5 meters of the correct height. But a bit annoying when walking at sea level and it shows -4 meters. Having watch mode in automatic and auto calibration active only when not in an activity seems to work best for me.

This is solving the wrong problem. The point is to measure the temperature of the barometer, to adjust for thermal expansion, etc OF THE SENSOR. If the watch is on your wrist, you WANT it to account for body temperature. Using air temperature will result on a bad barometer reading.

same issue, i am very disapointed by this watch

Tess, and everyone for that matter I really appreciate all the info and after doing so much reading and testing short of finding a perfect location that has the altitude posted and I can set this reading perfectly even then I doubt this thing will work the way in the way I expect a 700$ sport watch to work. I really am not trying to sound negative but it completely shocks me that a 100ft acceptable error is ok by Garmin mine is way past that and no consistency of anykind. The auto calibration is a complete joke because I have done it and done it and nothing works to give me anything consistent. I really think this watch is defective and if it isn't then it's not worth close to what it costs. 

I'm not going to be repeating myself because I can see it's getting annoying but even if the auto calibration is wrong meaning it selects the wrong altitude and berometer reading if I leave that area and then come back later it should still be close to the original reading even within 50ft. That would make sense to me even if here and there it was off by 50-100 feet. But this watch doesn't today my work location changed from beginning to end of day -200 ft my home -100 ft. 

Thanx agian but I'm returning it. It's a damn shame because it's a nice watch but seems like these sensors are a problem.

Hey, 

here my experience with barometric Altimeters. I tested V800, Suunto 9, Fenix 5X plus and 6X.

--> The Fenix 5X plus and 6 had the most accurate barometer Sensor ! The barometric pressure ist really on spot directly out of the box. Also when calibrating altitude over DEM or manually, you can get errors at about 20m in 1000m ascent as i have seen this days. The reason in my case was the Temperature situation (inversion weather). When the temperature reduction of the air-layers are not linear as in the alttude calculation model, also a temperature-compensated pressure sensor gives out errors due to the deviatin air density of the layers. THis happens also when calibrated.

--> This and the sensitivity to weather changes has nothing to do with GARMIN. So put the Auto calibration off and you should get small errors about 20-30m during 1000-2000m ascent or a few hours of activity.

Regards,

Chris

Chris,

Thank you for the input I was looking into Suunto for sure but man I really like this Garmin 6. On a semi last attempt I followed your instructions well for the most part. I'll try to keep it brief.

In the morning after reading this I manually calibrated the altitude and pressure to the following per local weather for my home location 101ft and 30.05 inhg and set watch mode to auto and turned off contunues calibration. Got to work and it was 94 and held there the entire 5 hours or so wish it pretty close to actaua altitude I thought problem solved then I came home and it was 130 ft when I got home still not bad but that seems to be the case I set it and then it starts to go in one direction and continues to do so through day. Currently been home for few hours and I can see in that the presuree changes in the last 6 hours when I look at history but now its back to 30.05 but the altitude is 144ft. Still not terrible but if it continues to go in this direction as I suspect it will though the day, later on today I will be closer to 200 at home. 

I'm still thinking this watch is defective but then I think what are the oods it is. And would it do this if it was.

Well, I rectify, the problem is software but seems to be generated during the installation of the update. I decided to try a new install from scratch. But this time I started with a master reset.
1. Turn off the Garmin watch
2. Press and hold the down, start, and back buttons
3. Power on the Garmin watch while holding these buttons
4. After the first beep release the start button
5. After the second beep release the remaining buttons.
After this first procedure I performed a factory reset that erases all data. Then I spent a long time re-setting everything. Now the barometer is working correctly. The watch perfectly detects whether it is a pressure variation or an altitude change (within the tolerance limits of such a device). A day at home to go up and down 3 floors (with a rather important weather variation outside) and the altimeter did not lose or gain a single meter at the end. And even after a car ride last night there were no variations.

Does it still works good?

Yes, always precise. Today, he lost a few meters during the car ride to work, but that's normal (I live in a mountainous area and the pressure can change abruptly from one valley to another and you can't expect the barometer to correctly assign all the variations when you move). But now, about 7 hours later, at my workplace, he has not lost or gained a single meter, when the barometer went from 1012 to 1009.  After the update and before the complete erasure, the altitude changed by more than 10m by 5h in the same place. But I would like to clarify again, I am only talking about an altitude measured and monitored by the pressure sensor with manual calibration at a given time and not a GPS calibration and tracking. So for me the pressure sensor as no hardware issue and at that point no software issue as well.