With the default settings it means the HR zone your partner(or whoever wears the ANT HR sensor) is in. You can configure it in Connect IQ or Garmin Express app. If you don't want the fractional (aka .88) you can change it to capital Z, or if you don't want to see the zone displayed numerically, only the HR, then you can completely remove "Display format #2". Or you could also display there some other things, like your partner's name: {N} or your own HR: {h}

Great! Thanks!

this will only work if you have an external ANT HR source. But there are some other data fields that display the HR + zone, and more. For example: apps.garmin.com/.../79d55484-c0d2-4047-b7ee-72d051d86e14

Or more here: apps.garmin.com/search

Hello. Could you add the Forerunner 955 to the compatible devices?  I see the 955 solar and 955 dual, but mine is just the old-fashioned plug-it-in.  

It's supported. All devices that have data fields are supported

Great app! Thanks! I just recorced an activity and the data is showing up in Garmin Connect. How can I export the data to Excel so I can compare with the watch HR in detail? If I export as a TCX file, seems like I only get the HR from the watch.

Hi, I'm not sure regarding the CSV export. What I know is when you connect your Garmin account to services that get your activities, then they do get the data recorded by ANT+ HRM. An example I use is runalyze.com.

It's not as accurate as comparing CSV, but what I do is to overlay the HR recorded by ANT+ HRM and the watch. You click on either one of them in Garmin Connect's Charts and then you can choose the other one to overlay it. One caveat is that the min/max values if the 2 charts will not necessarily be the same, because they're determined by Garmin based on the min/max value if each chart - it doesn't know that we'd like to have the same scale for both, it just displays them.

flocsy🤠 said:

It's not as accurate as comparing CSV, but what I do is to overlay the HR recorded by ANT+ HRM and the watch. You click on either one of them in Garmin Connect's Charts and then you can choose the other one to overlay it. One caveat is that the min/max values if the 2 charts will not necessarily be the same, because they're determined by Garmin based on the min/max value if each chart - it doesn't know that we'd like to have the same scale for both, it just displays them.

There's a workaround for that issue:

- Export the original FIT file (Connect website > activity > gear icon > Export File),

- Open it in https://www.fitfileviewer.com/

fitfileviewer.com has the option to graph two metrics and use a single y-axis.

Additionally, fitfileviewer will show the built-in "wrist heart rate" and "external heart rate" fields which are normally hidden from the end user. These fields are recorded by newer watches which have the source switching feature enabled, when a compatible Garmin chest strap is connected. "External heart rate" is recorded when the external hr is connected normally (via the Sensors menu on the watch), which means that the use of a field like this isn't necessary. The normal hr value that appears in the Connect activity graph is available as "heart rate".

So you can have your cake and eat it too: you can connect the external hr normally (without using a CIQ app like this field *), both wrist hr and external hr will be recorded, but the external hr will still be used for the activity. The only downsides are: you have to use a compatible Garmin strap, and the source switching feature is known to inappropriately use the wrist hr under certain circumstances, even when the wrist hr data is worse than the external hr data. Personally, I turn off source switching because of that bad behavior.

(* btw I love this app, but I also recognize there are situations where a user might want to be able to compare wrist hr and external hr, but have the watch use external hr for the activity and hr-related metrics.)

FlowState said:

the use of a field like this isn't necessary

If your only goal is to compare the OHR and HRM after the activity is saved and you rather do all the above steps, then it's not necessary (I didn't know this is possible, and of course it wasn't even possible when I wrote ANT+ HRM)

But there are many other use cases for ANT+ HRM:
- display both OHR and HRM so you can see them during the activity.
- display and record the HRM of another individual (this is the main use case for me: I run with my son and I'd like to monitor how his pulse is doing, but there can be a personal trainer who runs with the trainee, and the other individual can even be a horse you ride on)

I use a Polar H10, which can connect to the watch via Bluetooth, so I can wear the H10 and have it as my HR source, and my son can either broadcast his HR from his fr245 or he can also put on my old HRM-SS.