Suunto app Forum Suunto Community Forum
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Zonesense readings

    Scheduled Pinned Locked Moved Suunto Race S
    110 Posts 22 Posters 5.0k Views 20 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Ian BeveridgeI Offline
      Ian Beveridge @MKPotts
      last edited by

      @MKPotts The H10+ Polar belt is about 2 months old and I already changed the battery due to the current issues with the watch. It is paired and is picked up and announced as such immediately when the workout is selected. I use sea salt dissolved in water as an electrolyte for insuring a contact with the skin - only because over the last 30 years I’ve experienced many belts that momentarily lose signal. I never said I use electrode gel or that the belt is worn out - it’s new, fully charged and works impeccably well.

      What everyone is very sadly ignoring is that there are blatant errors within the watch. The first one I reported a few weeks back was the ZS real time counter was freezing. Last week this was admitted through a correction made to the firmware. The second and persistent one is that the logged (Logbook access) HR graph on the watch is totally wrong (as posted with images) despite the numerical statistics included with it being correct - while simultaneously the HR data being synced with the phone app (graph) is completely correct. This is the same whether ZS is active or disactivated. It’s plain common sense that there is an error.

      No - it is not my watch reverting to Optical measurement during the workout - because I’m checking the watch ever 200 metres for 5 kilometers - it’s fine.

      Now - I was CORRECT about he “counter freezing” and I’m going to be correct about the graph being wrong - there is definitely a bug and so far we’re not even looking at ZoneSense for the issues I’ve mentioned - it’s misleading to say that any of these two issues were caused by the new H10+ belt.

      Given this carry on I prefer to trust the H10+ than the verified faulty watch firmware.

      I

      1 Reply Last reply Reply Quote 0
      • Ian BeveridgeI Offline
        Ian Beveridge @Brad_Olwin
        last edited by

        @Brad_Olwin
        Quote " if no R-R data is in Runalyze then there is clearly something wrong with the belt and not the watch"

        Quote Me “I’ve deselected ZoneSense from both running and walking.”

        The graphical error in the Logbook widget is kind of really bad. The belt data displayed on the phone app simultaneously is first class.

        No I’m not using the “Run” it’s a Race S and the H10+ belt is new and never drops out.

        Last week the constant “counter freezing” error in the watch was updated - that wasn’t my H10+ belt causing that one - and it’s not causing the graphical display error either. Get this sorted and it’s another step forward. I’ll keep looking into the ZS issue but the graphics error in the watch indicates it’s clearly dodgy firmware.

        Brad_OlwinB 1 Reply Last reply Reply Quote 1
        • Ian BeveridgeI Offline
          Ian Beveridge @MKPotts
          last edited by

          @MKPotts Here’s a plot from one of the few times I got ZoneSense to do anything. It doesn’t look anything like the plot you put up - but I know next to nothing about this subject. Screenshot HRV.png

          M 1 Reply Last reply Reply Quote 1
          • Brad_OlwinB Offline
            Brad_Olwin Moderator @Ian Beveridge
            last edited by

            @Ian-Beveridge I have a Race S with me and will test but I am having no issues with ZS graphs in the app from Suunto Run, Vertical 2 and Race 2. So, I seriously doubt this is a watch firmware issue. I use ZS a lot.

            Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing/Race2Ti

            Ian BeveridgeI 1 Reply Last reply Reply Quote 0
            • M Offline
              MKPotts Bronze Member @Ian Beveridge
              last edited by

              @Ian-Beveridge
              That data is ok - looking at it I’d assume you got ZoneSense data throughout that run - though anomalies at 0.8% is getting high. If you have data for a run where ZoneSense worked initially then froze, you will probably see the r-r data scatter where the ZS cuts out.

              Turning off the ZoneSense app makes no difference to whether your watch receives r-r data from the H10 and records it in the fit file. The data is sent with the HR value and has been recorded in the file long before ZS arrived. I’m not aware that it’s possible for the H10 to send only HR and not r-r values.

              I can’t speak for anyone else but I’m certainly not ignoring the discrepancies between your watch and the app, nor the dropouts in ZS. I’m saying that your pattern of data and problems are fully consistent with a failing belt and are exactly as I’ve experienced with the H10 and Suunto belt. My H10 first showed problems when it was about 6wks old.

              I have no connection to Suunto, it doesn’t matter to me if the problem is your watch or the belt. I’ve simply been trying to help you fix the problem. But you already seem certain that your belt is fine and your watch isn’t, so I can’t add anything else.

              Ian BeveridgeI 1 Reply Last reply Reply Quote 4
              • Ian BeveridgeI Offline
                Ian Beveridge @Brad_Olwin
                last edited by

                @Brad_Olwin Where did I say that I was having problems with ZS graphs??? Nowhere!
                I have shown you a photograph of my watch Logbook HR graph along with a screengrab of my Phone App synced data. They are different but they are supposed to be the same. This is an error of the firmware 100%.

                Just explain then how those graphs are allowed to be different. ZS was deactivated during this particular run
                WhatsApp Image 2025-10-01 at 15.20.06.jpeg
                WhatsApp Image 2025-10-01 at 15.02.47.jpeg

                isaziI 1 Reply Last reply Reply Quote 0
                • isaziI Offline
                  isazi Moderator @Ian Beveridge
                  last edited by

                  @Ian-Beveridge the explanation is quite simple, there are two different filters used, one in realtime to show the user the HR valies from the received R-R stream, and one used a posteriori in the app. Very noisy data produces what you show, nothing new.

                  Watch: Suunto Vertical Ti

                  Blog: isazi's home

                  Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                  • Ian BeveridgeI Offline
                    Ian Beveridge @MKPotts
                    last edited by

                    @MKPotts
                    I am not getting HRV data from the fit file when ZS is deactivated.
                    I have not had any dropouts of ZS data when it was working. The real time counter was jamming but data for the complete workout was still stored unaffected and synced to the phone app at the end. This “jamming” error was corrected in the latest watch firmware update.
                    Frequently (in running only) I get real time ZS but after the workout no trace of it is synced with the phone app - it’s just vanished.

                    I have said about a dozen times there is a graphics problem on the watch which nobody can explain. It’s the HR data not the ZS data. It’s cast iron proof there’s a firmware issue.

                    2 M 2 Replies Last reply Reply Quote 0
                    • Ian BeveridgeI Offline
                      Ian Beveridge @isazi
                      last edited by

                      @isazi That’s not what’s happening! When I observe the watch every 200 metres in real time it gives the same data (here averaging 180 bpm) as is later seen in the phone app. However after the run there is a wrong graph showing in the watch logbook.

                      isaziI 1 Reply Last reply Reply Quote 0
                      • 2 Offline
                        2b2bff @Ian Beveridge
                        last edited by

                        @Ian-Beveridge ZoneSense data isn’t transferred from the watch to the app. There is some calculation done on the watch, that you can see on the watch, and different calculations are done in the app, that is presented to you within the app.

                        Suunto Race S

                        Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                        • isaziI Offline
                          isazi Moderator @Ian Beveridge
                          last edited by

                          @Ian-Beveridge and this is always with the same sensor?

                          Watch: Suunto Vertical Ti

                          Blog: isazi's home

                          Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                          • Ian BeveridgeI Offline
                            Ian Beveridge @2b2bff
                            last edited by

                            @2b2bff That might be the case but when I upload a run to Runalyze it shows no trace of HRV data when the ZS is deactivated on the watch. I’m always using a paired chest strap so it’s not the optical HR. To get a look at the HRV data on Runalyze I had to dig out a cycling workout where the ZS data was successfully logged.

                            2 1 Reply Last reply Reply Quote 0
                            • Ian BeveridgeI Offline
                              Ian Beveridge @isazi
                              last edited by

                              @isazi Yes the same sensor - which gives correct real time feedback and ZS in real time and occasionally successfully stored and always an accurate phone app graph.
                              I never even paid attention to the watch Logbook graph before but was gobsmacked to see it is displaying junk.

                              isaziI 1 Reply Last reply Reply Quote 0
                              • 2 Offline
                                2b2bff @Ian Beveridge
                                last edited by 2b2bff

                                @Ian-Beveridge this is of one of my activities, definitely recorded without the ZoneSense App. HRV on the left…

                                7fe11d02-922d-4cce-84b8-2280befd4119-image.png

                                Suunto Race S

                                Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                                • isaziI Offline
                                  isazi Moderator @Ian Beveridge
                                  last edited by

                                  @Ian-Beveridge maybe you mentioned it before, but what sensor are you using? Is the logbook corrupt just for one activity, or more?

                                  Watch: Suunto Vertical Ti

                                  Blog: isazi's home

                                  Ian BeveridgeI 1 Reply Last reply Reply Quote 0
                                  • Ian BeveridgeI Offline
                                    Ian Beveridge @isazi
                                    last edited by

                                    @isazi It’s an H10+ Polar - only a couple of months old. It’s been extremely stable. The Logbook graphics seems corrupted for many workouts - I’ve not gone back through them all though - too many.

                                    1 Reply Last reply Reply Quote 1
                                    • Ian BeveridgeI Offline
                                      Ian Beveridge @2b2bff
                                      last edited by

                                      @2b2bff It could be just because Runalyze is new to me (as of yesterday). If so I’ll get back to you and let you know.

                                      1 Reply Last reply Reply Quote 0
                                      • M Offline
                                        MKPotts Bronze Member @Ian Beveridge
                                        last edited by

                                        @Ian-Beveridge
                                        I’ve already explained that turning the ZoneSense app on or off in the watch has absolutely no effect on:
                                        i) the data the H10 sends to the watch (which includes r-r data)
                                        ii) the data the watch receives from the H10 and records in the fit file
                                        iii) the calculation of ZoneSense data in the app

                                        If there is no r-r data in the fit file, then either:

                                        1. the source of the data displayed on the watch and recorded in the file is not the H10.
                                        2. you have found a problem with your watch where - at random, because you’ve had r-r data before - it doesn’t record the r-r data it receives.
                                        Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                                        • Ian BeveridgeI Offline
                                          Ian Beveridge @MKPotts
                                          last edited by

                                          @MKPotts @2b2bff
                                          Yes I was just having trouble finding the right display with Runalyze - there is HRV data there even with the ZS deactivated. Unfortunately it goes wild after 10 minutes into the run - doesn’t affect the HR readings at all but certainly something going wrong with HRV. I’ll upload a few more workouts and see what they are doing.
                                          Screenshot 2025-10-02 225119.png

                                          Ian BeveridgeI 1 Reply Last reply Reply Quote 1
                                          • Ian BeveridgeI Offline
                                            Ian Beveridge @Ian Beveridge
                                            last edited by

                                            @Ian-Beveridge I uploaded a cycling workout where ZS was recorded - the only problem during the ride was the ZS counter freezing with real time display - but both ZS thresholds were measured. There is no logbook graph for this - seems it’s shown only for the most recent workouts.
                                            Screenshot 2025-10-02 232014.png
                                            Obviously the cycling is much smoother than when running with a high cadence so what I can do is try different ways of securing the chest strap - and check the results out with Runalyze.

                                            Running slower gets me a full result with ZS - so it’s not the chest strap that’s faulty - it’s perhaps just not secure enough for when things get a bit bouncy. Even if I can’t get it perfect for HRV the HR readings from the H10+ are great and I can live with that.

                                            Brad_OlwinB M 2 Replies Last reply Reply Quote 0
                                            • First post
                                              Last post

                                            Suunto Terms | Privacy Policy