External Heart Rate

Is that during an activity?

During activity, without activity… at any times.

You can be connected without an activity. The connection happens when you start the activity on the watch.

When I start an activity, the connection is continuously lost as well.

You cannot use HRM strap as an alternative to OHR when not in an activity. It only works when in an activity.

How do you know it is lost when in an activity? Do you see this afterwards in the stats? 

What Straps are you using and through what protocol are they connected?

No. I go to menu to add new sensor device. I add it and here I can see that HRM strap connect and disconnect every 4 or 5 seconds. During activity too.

Both straps with ANT+. On Garmin Edge 530 work well.

Dobby said:

During activity too

Nope. You can't see it. Right way to use external HRM - pair it and forget about connectivity. It will be paired only in activity. ANT+ works flawless. And... Your Edge works only in activity too. ;) 

Ok… but during run activity strap connects and disconnects continuously.

But isn't the activity temporarily stopped when you go into the pairing menu to check connectivity?

How do you know that? keep going back to sensor menu I dont this is the way to test it. (What process are you using to do that?)

If you really want to know speak to Garmin support they can interrogate the activity in detail for you. 

As far as my usage is , once connected at start of activity it works fine until I stop the activity.

Also if its an HRM RUN/ PRO etc you can get GCT Balance in the graphs which shows its connected in effect. In fact set up a RD screen with GCT Balance as GCT balance one needs those HRM to get (or the RD Pod) ...thats another way to check.