Good afternoon, dear owners of forerunner 945.
After updating the optics sensor to version 3.20, its operation in the activity mode has changed. Now, after starting (Start button) activity (Running, Skiing ...), the optical sensor instead of quickly flickering has a constant glow. In the Run mode, this did not affect the measurement result, but when measuring in the Ski mode using the skating course (free style), the measurement has an obvious underestimation values, instead of 140 - 160 beats / min, they show 85-120 beats / min.
