I was wondering if the AHI is computed on the time the machine is on, or the time you are sleeping or the some other indicator. I ask this since my Resmed seems to know the time i go to sleep. (SmartStart function does not turn on your pressures till it senses that you are asleep). Does it also fact...

Thanks..it was the last part that was my question. I didn't know how to get the data into sleepyhead correctly.

How did you get your Oxy data into Sleepyhead? I have a Contec CMS 50F and I have sleepyhead, but it don't know how to join the data.