Make sure your power meter is on and connect via our OGL app
Everything should look pretty similar to the screenshot above. We need to fill in the 'Blade tip to hand distances' and the 'Blade tip to datum distance' to properly configure your power meter for use.
Place then end of the tape measure on the tip of the blade and measure to the top hand position. The top hand position is located in the mid-point of the handle grip. Write down the measurement, we'll input it in a bit.
Same as before, place the end of the tape measure on the tip of the blade and measure to the bottom hand position. The bottom hand position is located at the middle finger knuckle. Make a note of the measurement.
Same as before, tape measure on the tip of the blade and measure to the datum. The datum on a dragon boat shaft is located where the shaft attached to the blade ends, as shown below.
click on the 'Blade tip to hand distances field and enter you measurements.
The output of a load cell when the shaft is experiencing no force is referred to as the Zero Offset. Each load cell has an associated zero offset.
The Zero Offset of a load cell can drift a small amount with a change in temperature. This is why manufacturers of power meters typically recommend performing a Zero Offset calibration on a semi-regular basis.
The Zero Offset of a load cell will be between -2047 and 2047. A typical Zero Offset will change no more than 2-5 units between calibrations. A difference of 10 or more is an indication that either a bending force is being applied to the shaft; that there is an issue with that particular channel or that you recently travel from an extremely hot or cold climate.
To do an offset, click on the hamburger menu in the upper left hand and select 'Calibration'
On the right side of the screen, click on the box that says 'Zero Offset' to perform a zero offset calibration.