Polar Electro s3+ stride sensor, User Manual, Page: 6 / 15

Calibrate stride sensor during training
(on-the-fly calibration):
You can calibrate the
stride sensor at any phase of your training
session with actual distance correction, when
you have run a known distance, preferably more
than 1000 meters, calibrate the stride sensor as
instructed in the user manual for the Polar
product in question.
Set calibration factor manually:
The
calibration factor is calculated as a ratio of the
actual distance to the uncalibrated distance.
For instance if you run 1200 m and the Polar
product shows a distance of 1180 m with
calibration factor 1.000. Calculate the new
factor as follows: 1.000*1200/1180 = 1.017.
The measuring range for the factor is
0.500-1.500.
Service
During the two-year guarantee/warranty period,
we recommend that you service the product at
an authorized Polar Service Center only. The
warranty does not cover damage or
consequential damage caused by service not
authorized by Polar Electro.
Changing batteries:
To change the batteries of
the stride sensor yourself, follow the given
instructions. To ensure the maximum lifespan of
the battery cover, open it only when changing
the battery. When changing the battery, make
sure the sealing ring is not damaged. Battery
4 E N G L I S H