How does SRM measure/record Heart rate?
Using a pulse transmitter (Polar) on the torso of the cyclist, the heart rate is transferred inductively to the PowerControl. The heart-rate measurement works with a Polar non-coded heart-rate sensor. It is possible to use coded straps only codes lower than 24 will be accepted. If a code higher than 24 is randomly selected, remove the chest strap for 30 seconds and replace, until an accepted code is selected. (not recommended). Heart rate transmission can be affected by: • Electromagnetic radiation (over-head powerlines). • Weak polar transmitter or poor connection. • Strong wind. • Interference from other riders transmitters, close by. • Zero crank frequency at approx 300 Hz. Display of the Heart rate can be updated any where from 1—10 seconds, and smoothed over anywhere from 1—10 measurement points.
