When using a foot POD, the POD is auto calibrated by GPS at short intervals during exercise. However, the foot POD always remains the source of speed and distance when it is paired and active for the given sport mode.
Foot POD auto calibration is on by default. It can be turned off in the sport mode options menu under Activate, if the Foot POD is paired and is used for the selected sport mode.
Foot POD refers to both Suunto Foot POD Mini and any other ANT+ foot POD.
For more accurate speed and distance measurements, you can manually calibrate the foot POD. Perform the calibration on an accurately measured distance, for instance, on a 400 meter running track.
To calibrate foot POD with Suunto Ambit2:
If the foot POD connection was unstable during the calibration exercise, you might not be able to adjust the distance in the distance summary. Make sure that foot POD is attached properly according to instructions and try again.
If you are running without a foot POD, you can still get running cadence from the your wrist. Running cadence measured from wrist is used together with FusedSpeed and is always on for specific sport modes including running, trail running, treadmill, orienteering, and track and field.
If a foot POD is found at start of an exercise, running cadence measured from wrist is overwritten by foot POD cadence.