I have paired my Garmin strap external HRM with my newly purchased 945. Prior to exercising, I confirm that it is connected. But it does not show up in the appropriate location in the display.
If the wrist HRM is active, the ORHM measurements are displayed. If the ORHM is turned off, the strap external HRM data is displayed for several seconds, but then display goes blank ('--').
What is stopping the watch from displaying the strap HRM and how do I fix it?