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ResMed Time Issues
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Crippiter Offline

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Posts: 13
Joined: Mar 2012

Machine: Resmed S9 Autoset
Mask Type: Full face mask
Mask Make & Model:
Humidifier: Resmed H5
CPAP Pressure: 5-20
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location:

Post: #1
ResMed Time Issues
Since daylight savings began, I've noticed my unit has an on again, off again problem where it calculates my AHI based on exactly two times the number of hours I've actually sleeped. That, and every now and then it figures I slept roughly 500+ hours per night. Yyyyyeah. Okay.

Anyone else have such a problem?
04-06-2012 10:22 PM
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PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,068
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #2
RE: ResMed Time Issues
Is this the machine reporting it or the software (rescan or sleepyhead) that is doing it?
04-06-2012 10:31 PM
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zonk Offline

Advisory Members

Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #3
RE: ResMed Time Issues
Hi Crippiter
B36, JumpStart, and Steven gave some suggestions about the S9 daylight saving in this thread.
http://www.apneaboard.com/forums/Thread-...ght+saving
04-06-2012 11:28 PM
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JumpStart Offline

Preferred Members-2

Posts: 297
Joined: Feb 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model:
Humidifier: ResMed H5i
CPAP Pressure: 10 - 20 (auto range)
CPAP Software: ResScan SleepyHead

Other Comments: ResMed Mirage Quattro

Sex: Male
Location: Houston, Texas

Post: #4
RE: ResMed Time Issues
(04-06-2012 10:22 PM)Crippiter Wrote:  Since daylight savings began, I've noticed my unit has an on again, off again problem where it calculates my AHI based on exactly two times the number of hours I've actually sleeped. That, and every now and then it figures I slept roughly 500+ hours per night. Yyyyyeah. Okay.

Anyone else have such a problem?

This is a known bug, which JediMark is aware of, triggered by the DST change. There is a workaround to use until the bug is fixed.

Open SleepyHead, select Daily. In the bottom left panel (the one with the colors), with the tab of Details, scroll to the bottom. Under Session Information, you will see at least two different time periods, sometimes more, (eg,if you left your machine to go to the bathroom, etc., during the night). Look in the column denominated as On. Select the icon for the session or sessions which are not accurate in that column, and click to turn the right hand side (left is black) from green to red. This will remove that information from your statistics, and SleepyHead will work correctly.

Hope this helps.

Breathing keeps you alive. And PAP helps keep you breathing!
04-06-2012 11:40 PM
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SuperSleeper Offline

Administrators

Posts: 9,976
Joined: Feb 2012

Machine: PR System One REMstar Auto (DS560)
Mask Type: Nasal pillows
Mask Make & Model: ResMed Mirage Swift II
Humidifier: none
CPAP Pressure: 12.5 - 18.5 cmH20 (auto range)
CPAP Software: SleepyHead

Other Comments: Have diabetes Type II

Sex: Male
Location: Illinois, USA

Post: #5
RE: ResMed Time Issues
The Original Poster (Crippiter) doesn't use SleepyHead, Crippiter uses ResScan....

So, this is an issue due to a bug within the S9 firmware, I think (not due to a SleepyHead or ResScan bug), (I think).

From this thread, b360155 reported this:


(03-12-2012 09:29 PM)b360155 Wrote:  I have a ResMed S9 Autoset and use both ResScan and Sleepyhead software. My usage hours were off by an hour as far as start and stop times last night with both software and the clock did not change on my machine. Sleepyhead said I went to sleep last night at 9:41 PM and woke up this morning at 4:02 AM. ResScan said that I went to sleep last night at 9:41 PM and woke up this morning at 4:03 AM. In truth, I went to sleep at 10:41 PM and woke up at 5:03 AM. Interestingly, the summary graphs with both software show the same range of usage and same total usage hours. But on the detailed daily graphs, ResScan has a gap with no data showing up between 2:00 and 3:00 AM. Sleepyhead shows continuous data throughout the evening.

What I've read before in another forum is that with ResMed machines, you have to manually change your machine's clock if you want your graphs to show the correct start and stop times. If that's not important to you, then you can just leave it alone. Your graphs won't reflect the correct DST start and stop times but the data will still be good as far as total usage hours and the various data averages. One important thing that I read though is that if you change the clock time on your machine, there are 2 time "windows" when you should perform the time change otherwise you can mess up some of the machine's data calculations. The first window is one hour after you turn off the machine blower in the morning and 12:00 noon. The second window is after 1:00 PM and before you turn on the machine's blower that afternoon or evening. If you accidentally turn the machine's blower on, you should wait at least one hour before changing the time because the S9 continues to record data for up to an hour after you turn the machine off. I changed my time when I got home from work tonight before turning on the blower on the machine. Hopefully, my start and stop times this evening will record correctly. I followed the same procedure in the fall when "falling back" and everything worked out fine. Oh-jeez

One thing to note is that I believe that these procedures were for the ResMed S9 machines. I'm not sure if the same or similar steps are required for other ResMed or other brands of machines.Huh

SuperSleeper
Apnea Board Administrator
www.ApneaBoard.com


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04-07-2012 06:54 AM
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