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    Zonesense readings

    Scheduled Pinned Locked Moved Suunto Race S
    110 Posts 22 Posters 5.0k Views 20 Watching
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    • 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
                                        • Brad_OlwinB Offline
                                          Brad_Olwin Moderator @Ian Beveridge
                                          last edited by

                                          @Ian-Beveridge I ran with my Race S today and a Suunto SmartSensor. No issues with HR or ZoneSense with firmware 2.47.12 on the watch. My zones were not set right as I have not used this watch in some time.
                                          IMG_3008.jpeg IMG_3009.png IMG_3007.jpeg

                                          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

                                          B 1 Reply Last reply Reply Quote 0
                                          • B Offline
                                            brave_dave Bronze Member @Brad_Olwin
                                            last edited by

                                            @Brad_Olwin may I ask if ZoneSense gave you detected values for both thresholds on that run and what the values are?

                                            Brad_OlwinB 1 Reply Last reply Reply Quote 0
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