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Pulse Ox Set to All Day - Isn't All Day

AdamTKincaid
over 4 years ago

This has been an ongoing issue since before the 'outage.'

I have my MARQ Expedition set to All-Day Pulse Ox in Garmin Connect and on the device itself:

However, since May 2019, when I purchased the watch, it does not track Pulse Ox all day. Instead, it only tracks at night, morning, and evening. There is always a huge multi-hour gap during the day:

I'd like to point out that this is independent of activity (unlike stress). In the above image, during that gap, I was mostly sitting at a desk at work. In the evening from 18:00-20:30 I was chopping wood and got pulse ox readings. I also don't think that it is because I am at 100% saturation either, as this is consistent for over a year and at varying altitudes. 

Here is what it looks like over a multi-day period:

Heart rate, respiration, etc are all tracked regularly and consistently.

Pulse Ox is actually very important for me since I often engage in activities at high altitude. I'm much more concerned with this reading during activities than when asleep, as I don't have sleep apnea.

Am I doing something wrong?

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  • 0 over 4 years ago in reply to AdamTKincaid
    AdamTKincaid said:
    considering that it is an optional activity data field.

    I don’t think it is; I’ve just double checked every data field option in the Run app to confirm there’s not something I’ve missed.  If you’re referring to the “Muscle Oxygen Fields”, they are not Pulse Ox (they are relevant if you have a muscle oxygen sensor paired).

    All I can suggest is you contact Customer Support with your data, because you are not getting the expected behaviour. To trouble shoot, one of the first things they will almost certainly ask you to do is a settings reset (if not a data and settings reset); so why not give that a try now if this is particularly bothering you.

  • 0 over 4 years ago in reply to Crispin_Ellisdon

    Aha! I incorrectly assumed that the SMO2 was the same as Pulse Ox. Thanks for setting me straight.

    I'm going to do a reset. Just looking for other options. I'm not in a rush, seeing as how this has been a persistent thing for over a year...

    One last thing, I am able to 'measure' my pulse ox during the usual gap today, but only when I am on the widget on my watch. It isn't grabbing it in the background like other metrics. I am not being active right now. I'll be active again this evening after work, and assume, like usual, my Pulse Ox will be measured regardless.

    I'll update the thread again when I reset and/or talk to customer support.

  • +1 over 4 years ago in reply to AdamTKincaid
    AdamTKincaid said:
    One last thing, I am able to 'measure' my pulse ox during the usual gap today, but only when I am on the widget on my watch. It isn't grabbing it in the background like other metrics. I am not being active right now. I'll be active again this evening after work, and assume, like usual, my Pulse Ox will be measured regardless.

    To cover this, you may find this Garmin Support article useful https://support.garmin.com/en-GB/?faq=yamC5f3C8X2V3ljqFCgIMA (Acclimation mode got renamed All Day mode some time back). As you can see, in All Day mode it only takes a sample every 5-15 minutes (otherwise it would destroy battery life more than it already does). So if that once in a 10 minute(ish) sample is interrupted by movement, then there’s no data. Hence it’s easy to see why there are gaps in sample records during the day and more likely a complete set when sleeping. Interestingly, in Sleep mode it polls every minute, but only within a 4 hour window; so one would expect even fuller sample records in Sleep mode, albeit only for that relatively short 4 hour window.

    Pulse Ox Sample Rates

    Pulse Oximetry, or Pulse Ox, is a non-invasive method used to measure the saturation of oxygen in the bloodstream. The Pulse Ox sensor on the fenix 5X Plus, and MARQ series, has three sampling modes: Spot Check, Acclimation, and Sleep. Read the information below to find out how often the sensor will sample your SpO2 (Peripheral Oxygen Saturation). 

    IMPORTANT

    • Pulse Ox data is intended for recreational use only. Pulse Ox data is not intended to be used for medical purposes, nor is it intended to diagnose, treat, cure or prevent any disease or condition
    • Enabling constant SpO2 monitoring by placing the watch in Acclimation or Sleep Mode will result in much greater battery drain

    Spot Check Mode

    Spot Check Mode is enabled when you scroll to the Pulse Ox widget on your fenix 5X Plus, and is used for getting your current SpO2 level. The watch will take a sample reading at that time. It will not take any other further readings until you navigate back to the Pulse Ox widget on your watch. 

    Acclimation Mode

    In Acclimation Mode the watch will sample your SpO2 levels every 5-15 minutes. When viewing Pulse Ox on the watch, you will see the average of readings for each hour. 

    Sleep Mode

    Sleep Mode is designed to read SpO2 levels while you sleep. In Sleep Mode the Pulse Ox sensor will sample for 4 hours during the middle of the regular sleep hours you have set in Garmin Connect. The Pulse Ox sensor can generate readings up to every minute while in Sleep Mode. 

  • 0 over 4 years ago in reply to Crispin_Ellisdon

    Thanks so much for pulling this and posting it. Definitely seems to make sense with my experiences. It does seem odd that tracking is fairly regular in the morning until 10am and evening after 6pm. During those hours I am MOST active while awake.

    Even that considering, your post and information is more than helpful and explains my experiences.