I was always under the impression that the "mask fit check" feature tested at the highest pressure set, although I haven't been able to find any documentation on that.
If someone else knows, please chime in.
I'm curious about this, too. Whenever I use Check Mask Fit, it's to blow air through the hose after I've washed it, to try to get the water drops out... and I feel like it is only blowing at my min pressure.
Yes that's what mine does also. The problem is running a mask fit at low pressure doesn't have much value. I want to see what it's doing at high pressure since that's when leaks occur.
No. But I can tell the difference between 7.5 out and 9.5 in. And the difference between 9.5 and 14 in is apparent.
Much louder and I can feel the difference in the exhaust. There is no doubt that it is not being tested at the highest pressures.
I use the Dreamstation Apap machine with the Dreamwear mask, my pressure setting is 14-20. During the test the pressure seems to be much greater than normal. I test when the Dreammaper app indicates <95%, so far each test passes.