I tried googling but could not really get an answer. Outside it uses gps but is that just for actual?
I’ll get my watch saying I’m running say 6:30 m/km but I’ll really be running say 5:30. At the end of the run it’s accurate so does it uses stride like on Treadmill for pace estimation and “catch up†with gps?
I tried googling but could not really get an answer. Outside it uses gps but is that just for actual?
I’ll get my watch saying I’m running say 6:30 m/km but I’ll really be running say 5:30. At the end of the run it’s accurate so does it uses stride like on Treadmill for pace estimation and “catch up†with gps?
The current pace is all over the place. The other day I was doing a 3KM TT, didn’t go that well, I was supposed to be running by feel, but still needed to use my Garmin. Running by feel never goes well for me at the start of a run, I can be doing 3.45 min/km pace and it feels like 5min pace. The current pace had me at 5.45 min/km at first, I increased my pace, thinking I was running too slow, it then jumped to 3.30 pace… what I normally do in a race is set my lap alerts to 500m and then on one screen I have current pace and lap pace. The lap pace tends to be pretty accurate.
Same for me. I’m trying to determine if the watch is broken
Recently started giving really bad treadmill ratings (2:55 when I’m running like 5) - have calibrated and use the same treadmill
I guess I’ll RMA it
I tried googling but could not really get an answer. Outside it uses gps but is that just for actual?
I’ll get my watch saying I’m running say 6:30 m/km but I’ll really be running say 5:30. At the end of the run it’s accurate so does it uses stride like on Treadmill for pace estimation and “catch up†with gps?
For some reason I have found the 935 and Fenix 5 to be a lot more “unstable” with pace estimations than previous garmin watches I have had. Agreed at the end it all seems to work out OK, but certain segments of a run when I know my pace is steady it will have me dropping by 45-60 sec/km in certain segments-interestingly I have found this often occurs in one particular area of a run where there is significant overhang from some trees as well as a freeway next to me.
I have just learned to live with it now but do find it annoying.
Yeah but it’s strange. Me 935 was fine but the 945 is way off. Oddly it was fine for the first few months
I haven’t really picked up a pattern of when it’s unreliable, but I’m thinking bad weather, clouds and runs with lots of trees seem to be when it’s least reliable. Not sure if that’s just a coincidence.
It is called “Noise” and each signal has a Signal to Noise Ratio
you should never monitor the “actual pace” because it is useless and polluted with noise
Instead, you should keep monitoring the “Average Pace” which, the longer you average, the closer is to your real pace.
After 2-3 minutes noise is basically gone.
for your info
https://en.wikipedia.org/wiki/Signal_averaging
Short Answer: It depends on what ‘pace field’ you have asked the watch to report but its mostly accelerometer data.
Long Answer: Modern watch GPS systems work like cars which uses real time accelerometer data which is then corrected in a slightly delayed manner based on GPS. What your watch does is geolocate you at the start of the run. Once you start the watch uses its internal accelerometers to predicted your path in relative space in real time. Basically its drawing an internal map without any GPS references. At the same time it is also receiving GPS data points with a time stamp. Then after a period of delay it uses the time stamps to compare the accelerometer data with the GPS data points to create the most probable data line. This process allows the GPS to be super accurate even when the signal goes in and out BUT only if you give it enough time to make the correction and average out the error.
To make the most of the system you want extremely sensitive accelerometers that can detect difference average GPS points won’t pick up. But this sensitivity also makes the instant pace predictions unstable relative to older generations of the watches when looking at pace over short time intervals. If you want a more stable and accurate reflection of speed use average lap pace and set the autolaps to shorter distances (like 1 km).
Short Answer: It depends on what ‘pace field’ you have asked the watch to report but its mostly accelerometer data.
Long Answer: Modern watch GPS systems work like cars which uses real time accelerometer data which is then corrected in a slightly delayed manner based on GPS. What your watch does is geolocate you at the start of the run. Once you start the watch uses its internal accelerometers to predicted your path in relative space in real time. Basically its drawing an internal map without any GPS references. At the same time it is also receiving GPS data points with a time stamp. Then after a period of delay it uses the time stamps to compare the accelerometer data with the GPS data points to create the most probable data line. This process allows the GPS to be super accurate even when the signal goes in and out BUT only if you give it enough time to make the correction and average out the error.
To make the most of the system you want extremely sensitive accelerometers that can detect difference average GPS points won’t pick up. But this sensitivity also makes the instant pace predictions unstable relative to older generations of the watches when looking at pace over short time intervals. If you want a more stable and accurate reflection of speed use average lap pace and set the autolaps to shorter distances (like 1 km).
Thanks very much for the detailed answer
Sorry meant to add more. I figured it was accelerometer. I assume same for treadmill
When I first got the watch it was accurate on treadmill with calibration. Now it’s not at all. It’s so far off I can’t calibrate it the whole way sometime (evidently error is too great)
It has also recorded me at zero pace for the entire run on a treadmill. This has only happened once
Finally, lately the pace data on runs I do all the time is way way off
Sonis my accelerometer broken? Can they break
I guess I’ll RMA itSonis my accelerometer broken? Can they breakSounds like it. Anything can fail in electronics. If your watch pace is erratic on a treadmill, then it seems like your accelerometer is dead or dying. Call Garmin and do their process.
I guess I’ll RMA itSonis my accelerometer broken? Can they breakSounds like it. Anything can fail in electronics. If your watch pace is erratic on a treadmill, then it seems like your accelerometer is dead or dying. Call Garmin and do their process.
Thanks will do