SUUNTO BIKE POD - Manual (Page 7)

3.5. CALIBRATION
Suunto Bike POD measures your bike’s speed and distance from the rotation of
the front wheel. The wristop computer needs a specific calibration factor that
takes the wheel size into consideration.
To define the exact calibration factor, measure the tire circumference or
calibrate your Bike POD using a known distance.
3.5.1. Measuring the circumference manually
1. Set a measuring cord on the floor.
2. Sit on your bike and ride along the cord so that the tires rotate fully at least
once.
3. Measure the covered distance with the accuracy of a millimeter.
4. Divide the circumference by 2050 (for example, 2096 / 2050 = 1.022439 =
1.022).
5. Set the calibration factor in your Suunto t-series wristop computer. See steps
2 to 5 in Section 3.5.3. for setting the calibration factor.
3.5.2. Calibrating the Bike POD using a known distance
1. In your Suunto t3 or Suunto t4, enter Training mode.
In your Suunto t6, select Connect in the Speed/Distance menu.
2. Reset the distance measurement at the start line.
3. In your Suunto t3 or Suunto t4, press START/STOP in Training mode.
In your Suunto t6, press START/STOP in the Speed/Distance mode.
4. Cover a known distance with your bike.
5. Press START/STOP to stop the measurement.
6. Select Calibrate in the Speed/Distance mode.
7. Select Bike POD and replace the measured distance with the correct
distance.
3.5.3. Calibrating the Bike POD using the calibration factor table
You can also calibrate the Bike POD using the calibration factor table. The data
in the table comes from various tire manufacturers and the European Tire and
Rim Technical Organisation. Because of the differences in the tire pressure,
tread pattern, and measurement methods, the table is only indicative.
1. Check your tire size, and find the appropriate calibration factor in the table
(see Appendix).
2. In the Speed/Distance menu, select Calibrate.
3. Select Bike POD.
4. Select Cal. (t6 only)
5. Set the correct calibration factor with UP/DOWN.
Suunto t6
Suunto t3
and Suunto t4