Garmin

220 watchers

Badger May 2024 6:18pm, 1 May 2024 17,103 posts	0 Badger The latter, indeed. Every record in the fit file has a CUT timestamp and it'll be based on the time since the first GPS location logged even you press start. If you pause, it goes on calculating GPS location every second but doesn't log it, if you Resume Later it isn't even doing that.
Big_G May 2024 6:30pm, 1 May 2024 3,452 posts	0 Big_G Flanker, when Larkim used that expression I presumed he meant that the device was literally still tracking/recording time even if Resume Later was pressed, but I wasn’t sure if it would do that. Badger, thanks.
larkim May 2024 9:34pm, 1 May 2024 23,981 posts	0 larkim Yes, I'd wondered that too, badgers description of how it works technically makes perfect sense.
Badger May 2024 11:06pm, 1 May 2024 17,105 posts	0 Badger I had a quick poke at a running fit file - total time and elapsed time only show up in lap records and a few summary records, but not in individual data points. It's clearly keeping track of stop/start timing and lap times (which must be interpolated) to sub-second accuracy, but not constantly logging them. So I would walk that back a tiny bit, in that there is a little bit more going on than the timestamps of the individual records, but it looks as though it's based on higher accuracy time stamps for stop/start events than are recorded in the fit file (also time stamped to the second). I am currently collecting HRV data and that does get logged while the watch is paused; GPS location doesn't.
flanker May 2024 11:55pm, 1 May 2024 21,224 posts	0 flanker As Abdger says, the device is still looking for the GPS signal when paused, and so having a battery impact, but not when resuming later. I can mean that when resuming the first few data points are unrelaible unless you wait for it to tell you it has acquired GPS. Given HRV is independent of activity and monitored continuously, how do you get the data out for non-activity periods (this is another "I could probably research this, but it's easier to ask" thing )?
Welshpoppy May 2024 11:05am, 6 May 2024 3,883 posts	0 Welshpoppy Anybody have issues with run not uploading to any sites? My cool down uploaded but not the run itself?
Pale Skinny Vegan May 2024 12:35pm, 15 May 2024 470 posts	0 Pale Skinny Vegan My Garmin Edge 800 went a bit weird on my cycle commute this morning. It's added a few random plots a few km off my route and calculated distance and speed as if I really rode there. Is it possible to open the .fit file and identify the rogue plots and delete them? Strangely enough, I was watching a Scott Manley YouTube video about GPS jamming and spoofing yesterday. This appears to have happened just as I rode past a TV transmitter tower. Is this just coincidence? I've ridden past it hundreds of times before.
larkim May 2024 12:42pm, 15 May 2024 24,149 posts	0 larkim You could probably edit the GPX file more easily to remove the random places if you know the timestamp at which they started / ended. .fit files can be manipulated like that too but they are just a little harder to work with than a GPX.
um May 2024 2:41pm, 15 May 2024 8,453 posts	0 um Or you could use GPS Track Editor to do it on a map and not worry about the time gpstrackeditor.com
Pale Skinny Vegan May 2024 8:16am, 16 May 2024 471 posts	0 Pale Skinny Vegan Thanks both. I used that editor. I had to convert from .fit to .gpx first, but it was quite easy then to just filter out everything over 40 km/h to get rid of the sudden jumps.