S9 Autoset sleep report incorrect display

[neil_in_philly]

I used my new S9 Autoset for the past three nights (Fri May 4th night to Sunday May 6th night). My sleep report is not reporting hours by each night, but adding up the hours. For example, I used the machine for 7.3 hours on Friday night and 7.2 hours on Saturday night. On Saturday morning, the sleep quality displayed usage of 7.3hrs and an AHI of 2.2. Yesterday morning it shows a usage of 15.5hrs and an AHI of 3.2. Please see the below image for sleep report and sleep quality screens. I went to the clinical menu and found that the date was displayed as 04 MAY 2012 and the time as 00:00. I've changed the date to 06 MAY 2012 and set the time to approx 21:30. The system rebooted right after I changed the date and again after I changed the time, but when I went and checked the date and time, it is displayed as 06 MAY 2012 and 00:00. When I go to the sleep report, it shows as 15.5 hrs for one day (05/04) and the second day (05/05) as non-compliant. With the above settings (06 MAY 2012 and 00:00), I used it last night. This morning the display shows as 7.4hrs and AHI of 2.2. When I go to the clinical menu, the date is still 06 MAY 2012 and 00:00. I am not sure what is wrong with the device. I can't go to my DME and say that the internal date and time are wrong as I am not supposed to go to the clinical menu. Let me know what you think.

[XSnorer]

If your machine has a problem incrementing the day/time counters then you wouldn't need to go to the clinical menu to find it, if I'm not mistaken the time used should show on the summary screen.

So what happened last night?

[neil_in_philly]

Last night's display looks perfect, but I bet that it is going to get messed up tomorrow morning. It will show something like 15.1hrs. It should only show the number of hours used tonight.

[Slinky]

... I can't go to my DME and say that the internal date and time are wrong as I am not supposed to go to the clinical menu. ...

Nonsense! I do think you were wise to ask here as you will most likely get a better and clearer answer. BUT ... this is YOUR therapy, it is YOUR health, YOU have purchased, or are in the process of purchasing, this CPAP. YOU have every reason to be interested in your nightly therapy results. There is absolutely no reason you have to hide the fact that you know how to access your therapy data. Its not like you are changing your therapy settings or asking how to change your therapy settings w/o doctor's knowledge or order.

[Lizistired]

What Slinky said.

If there is a compliance requirement for payment, you need to get this fixed, and the DME needs to know about the problem.

[neil_in_philly]

Thanks for the replies.

I just spoke with a guy at Resmed Technical services. He told me that most likely the date and time is getting stuck in memory and the DME should reset the machine to Factory settings and repeat the clinical setup.

I called the RT and explained her without getting into the detail that I know how to get to clinical menu. I explained her that the total number of hours are adding up rather than getting split into individual days. I don't think she understood the problem. I've told her that this is going to mess up the compliance data. She will try to setup the modem (they installed a modem on my unit) in their system and figure out if the compliance data is fine. She wanted me to give it couple of more days and if it doesn't get fixed, she would replace the unit.

Since I am a Software guy, I know what is happening. The firmware is buggy and the date/time on the system is stuck and not getting released or incremented. How do I explain this to the uninformed at DME? I will give couple of days and see how it goes.

[DoriC]

I'm not sure if this is the problem but I've heard that the data sometimes gets "stuck" and the solution is to unplug the machine, wait a few minutes and then plug back in and it will reset itself. Worth a try.

[billbolton]

Since I am a Software guy, I know what is happening. The firmware is buggy .......

There are hundreds of thousands of S9 units out in the field that don't exhibit your problem, so as a Software guy you should be able to easily recognise its very highly unlikely to be a bug in the firmware

[Slinky]

I've found that "I spoke to Resmed ..." and "Resmed says ..." work wonders with reluctant DME providers.

[pats]

Since I am a Software guy, I know what is happening. The firmware is buggy .......

There are hundreds of thousands of S9 units out in the field that don't exhibit your problem, so as a Software guy you should be able to easily recognise its very highly unlikely to be a bug in the firmware

I disagree with both of you.

There can be bugs in software or firmware that only rarely cause trouble. For example, there might be an unusual race condition that results in file corruption, and once the file is corrupt the problem persists. I don't think we have enough data to take a position either way on a firmware vs. hardware root cause for this one. I also don't think it matters.

How about contacting the company that sold the machine, telling them about the symptoms, and seeing if they can get it replaced or fixed by the manufacturer?

[zoocrewphoto]

I agree that it is probably an error. But is there any chance that your sleep schedule is really odd?

I got my machine a week ago, and I learned after the first night that it was breaking up my nights. I am a severe night owl, so I sleep past noon, and the machine changes days at noon. So, if I go to bed Monday night (but actually Tuesday morning), then anything before noon counts as Monday, and everything after noon counts as Tuesday. Then the next night, the part before noon would be added to the previous part after noon. I contacted Resmed, and they had no solution. So, I went into the clinical setup and adjusted the time. My machine now believes that noon (time to change day) is at 4pm. I rarely sleep that late, but I do sleep past 3pm on my days off sometimes. So, that now keeps all my data correctly by night. I just have to know when I am looking at my data that an event listed at 4am is really my 8am. My compliance data will show real nights, not two halves that don't go together.