Forerunner 970 + HRM pro plus, HRM not primary data point

1516554 1 month ago

Hello,

I’ve been using my Forerunner 970 with the HRM Pro Plus, connected via ANT+ (The strap ). However, it seems the HRM isn’t being used as the primary data source during my runs.

I uploaded the FIT file of my last interval session into FitFileViewer, and I noticed a discrepancy between the “Heart Rate” data (which shows up in the Connect app) and the “External Heart Rate” (from the chest strap). If the HRM Pro were set as the main heart rate sensor, I’d expect these lines to match.

However, when I compare “Heart Rate” with “Wrist Heart Rate,” the graphs do align.

Does anyone know how to ensure that my HR strap is being used as the primary heart rate source during workouts?

Thanks.

Top Replies

Garmin-Maeve 1 month ago +2

I looked at this file and the heart rate strap was the source of heart rate for 97% and the remaining was the wrist heart rate using Dynamic Source Switching. You can disable Source Switching if you want…

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0 Garmin-Maeve 1 month ago

I looked at this file and the heart rate strap was the source of heart rate for 97% and the remaining was the wrist heart rate using Dynamic Source Switching. You can disable Source Switching if you want to only see data from the paired HRM by going to the watch menu > Health and Wellness > Wrist Heart Rate > Source Switching.