Why are most of my sleep sessions exactly 1 hr?

[AussieBobJ]

After 15 years of being a CPAP user, I've decided to deepen my understanding of "What's going on"   

I've done some reading on this and other forums, some searching and I've been unable to answer a strange question - Why are most of my sleep sessions exactly 1 hr?

Well, not exactly 1hr, sometimes 1hr and a few seconds, other times only 59 minutes and a few seconds ... but on some nights my sleep sessions are only interrupted by late night trips to the bathroom.

[PeaceLoveAndPizza]

This has previously been reported with the Philips Dreamstation 2 replacement machines. This is a good thread to start the readings as it links to the other threads.

https://www.apneaboard.com/forums/Thread...every-hour