Sorry if this issue has been addressed previously. I did not find any mention of it using the search feature although I am not sure I understand how that feature really works.
This post is about my experience with the Bluetooth feature of Phillips Respironics Dreamstation and Dreammapper web page. I have had my new Dreamstation for over a month now. I like to see each night's results during the following morning. So I tried the Bluetooth feature which is fine for what it does when it works, but is not a reliable connection. I use an iPhone for my Bluetooth upload. I can sometimes re-establish the connection in the iPhone's Bluetooth display by reconnecting to the Dreamstation. That doen't always work. If I turn off the iPhone Bluetooth and then back on I can reconnect some of the time with that method. This morning I used the "Dish" method of pulling the plug on the Dreamstation, waiting 10 seconds, then plugging it back in and was able to reconnect that way.
I am not sure what all is in play here, but has anyone come up with a longer term solutions to this Bluetooth loss of connection problem?
I had exactly the same experience with my DreamStation and iPhone. I don't know which side to blame but I gave up after a couple of weeks. I put a Wifi SD card in my DreamStation and use SleepMaster to transfer the data and SleepyHead to look at how I slept. It is not quite as convenient as the iPhone app should be, but it works 100% reliably and shows more information. But you need a computer not an iPhone.
Th frequencies used by Bluetooth and WiFi are actually in the same band (about 2.5 ghz.) and should have similar transmission characteristics. However whereas WiFi uses fairly broadband channels (up to 25 mhz. wide) and transmits on only one or at most a few of them at a time, Bluetooth uses spread spectrum techniques hopping between as many as 79 1mhz wide channels in the same band. This means the receiver must know how to follow the hops, and if they get out of sync that can cause signal loss. Also they can by happenstance use the same frequencies simultaneously if both are going at once, and this too can cause problems.
The above is my opinion. It is just possible that I may, occasionally, be mistaken.
I am neither a Doctor, nor any other kind of medical professional.
Everything put together sooner or later falls apart.
Your brain is not the boss.