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OSCAR import of Viatom/Wellue data - DST time base
#1
OSCAR import of Viatom/Wellue data - DST time base
Just did my first import of my several months of Wellue SleepU data into OSCAR (what an amazing software product).

One problem: all my oximeter events are an hour ahead of the CPAP data in the OSCAR plots  (so if sleep starts at midnight for the oximeter, it's 1 AM for CPAP), which suggests a disparity in how Daylight Savings Time is being handled in the 2 data streams. 

Any suggestion for how to get the oximeter data to adjust?

Thanks!
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#2
RE: OSCAR import of Viatom/Wellue data - DST time base
If you are using OSCAR version 1.3.1 only.  Change the SleepU's filename to match the time you want it to start.

Purge the oximeter data.  Go to the directory where the SleepU data is located and change the name of each file to match the CPAP's start time or and hour different.  

Using your midnight and 1 AM as an example:
A SleepU file name is comprised as Year-Month-Day-Hour-minute-second (YYMMDDHHmmss).

Original SleepU filename started at 3/30/2022@00:22:33 = 22030002233

Either the CPAP's time or the real SleepU start time, 3/30/2022@01:22:33 = 220330012233

As shown above you would rename a SleepU file that has a name of, 22030002233 to 220330012233.

You then reimport the SleepU's data into OSCAR, and it will now match.
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
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Useful Links -or- When All Else Fails:
The Guide to Understanding OSCAR
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
Apnea Helpful Tips

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#3
RE: OSCAR import of Viatom/Wellue data - DST time base
I just synchronized the Wellue software (O2 Insight Pro) with my computer clock (under configuration) - will see if that helps.
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#4
RE: OSCAR import of Viatom/Wellue data - DST time base
That will help going forward, but I was referring to the data you already had downloaded from the SleepU. Also, testing has shown that the SleepU's start time can be up to a minute after you actually started the device. Due to the CPAP's clock time drift, the time synchronization between the SleepU and your CPAP is always a problem.
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
___________________________________
Useful Links -or- When All Else Fails:
The Guide to Understanding OSCAR
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
Apnea Helpful Tips

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#5
RE: OSCAR import of Viatom/Wellue data - DST time base
Excellent, thanks for the helpful guidance. Will also make a mental note to re-sync the SleepU each fall/spring time change.
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