Best method for Heart Rate monitoring/correlation

[HLApB]

Thank you. I see the graphs now.  But, I have another issue correlating the the data.

Today I first loaded the data into Sleepyhead from the SD card of my Dreamstation APAP. Everything appeared properly in Sleephead including reporting useage of 8 hours 6 minutes. Then I connected my CMS50F (firmware 3.8) to my computer and directly loaded the oximetry data into Sleepyhead. Now Sleepyhead shows 21 hours 50 minutes of use. I started the oximeter recording at the same time as I began my dreamstation and also ended my recording at the same time as the dreamstation. The internal clock of the oximeter is set correctly.

Any ideas about what is happening?

[Crimson Nape]

There seems to be GMT time shift when preforming a direct import.   If you use SpO2 Assistant to import the data then use the .spo2 file it will align.  One note on this; You can't import the file from the SpO2 Assist data directory.  You will need to copy it to another location like "My Documents".