If auto calibration is set to 'ON', we will calibrate to DEM at start. We then continue to calibrate during the activity using GPS+DEM.
#1
Jeff_ODSWENG, and what about the general rules about altitude calibration AT START? (I mean those below, which are officially shared by Garmin)
Is this detailed description about the prioirity order used “AT START” calibration still valid?
See ”At Start - The goal of At Start calibration is to provide a consistent relative starting elevation for users that do multiple activities at specific locations. It will not calibrate again during the activity. When the timer is started the watch will try to determine the best elevation source to calibrate to, based on the following priority:
- Click here to view priority list
- Manual calibration immediately prior to starting the activity
- Prior manual calibration point at the same location
- Recent manual calibration, if the quality of the calibration is determined to be good enough
- Map data (DEM), if available
- Prior Connected DEM point at the same location:
- Connected DEM refers to elevation data from the Garmin Connect app on a paired smartphone
- Connected DEM, if currently connected to a phone
- Prior GPS point at the same location
- GPS, if a good fix has been acquired:
- After acquiring a GPS fix the timer ring will turn yellow. At that point, it can take up to 30 seconds for the GPS elevation to settle. If vertical speed settles to less than .1 m/s the GPS elevation data will be considered good enough use for altimeter calibration.
- Before starting the timer, the elevation data field on the watch will preview the calibrated elevation”
So far I relied on item 2, earlier same location calibrations, not just with 6X, but with 5+, 3HR, and also with 910XT.
Will items 1, 2 and 3 still work after 19.20?
#2
A side-question: does the number of (saved) locations used for altitude calibrations limited?
Or may I make manual altitude calibrations having GPS fix at unlimited locations without loosing the saved data (location+altitude) of the oldest calibrations?
NB: I moved this post of mine from another thread, because it was not replied there and I could not see any chance that it would be under “sw 20.30” thread