ResMed A10 time machine

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cathyf
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ResMed A10 time machine

Post by cathyf » Mon Oct 20, 2014 7:49 am

This morning I put my card in my computer and loaded data into Sleepyhead at 7:05am. The graphs are obviously funky, in that the data just stops 2 hours and 40 minutes before the end of each graph. And looking at the list of session files, there is a funky-looking session running from 7:53 to 8:46 with only an STR.edf file. At 7:05am!

ResMed Session #1413774421
10/19/14 22:07:01 01:06:02 02h 59m 01s
20141019_220701_PLD.edf
20141019_220701_BRP.edf
20141019_220701_SAD.edf
20141019_220656_EVE.edf
STR.edf
ResMed Session #1413785315
10/20/14 01:08:35 04:02:36 02h 54m 01s
20141020_010835_PLD.edf
20141020_010835_BRP.edf
20141020_010835_SAD.edf
20141019_220656_EVE.edf
STR.edf
ResMed Session #1413795922
10/20/14 04:05:23 06:05:23 02h 00m 00s
20141020_040522_PLD.edf
20141020_040522_BRP.edf
20141020_040522_SAD.edf
20141019_220656_EVE.edf
STR.edf
ResMed Session #1413809580
10/20/14 07:53:00 08:46:00 00h 53m 00s
STR.edf

Can my APAP tell me any really useful stuff from the future? Tomorrow's lottery numbers?

I rummaged around in the data files and can't find anything useful (to me anyway) to tell me what happened. The data files are time-stamped at 7:05, and this 7:53 to 8:46 ResMed session was in the files at 7:05. I notice that the display only shows PLD, BRP, SAD and EVE files for the current day -- and all of my previous information shows sessions with just STR.edf

This makes me kind of nervous -- can I really trust the data coming from the machine?

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Pugsy
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Re: ResMed A10 time machine

Post by Pugsy » Mon Oct 20, 2014 7:58 am

Any time new software is used with a new machine.....and things look weird.
Go verify with name brand software....ResScan in this case to see if it is the software that is whacko or the data that is whacko.

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palerider
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Re: ResMed A10 time machine

Post by palerider » Mon Oct 20, 2014 8:05 am

cathyf wrote: Can my APAP tell me any really useful stuff from the future? Tomorrow's lottery numbers?


This makes me kind of nervous -- can I really trust the data coming from the machine?
do you have it's clock set right?

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cathyf
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Re: ResMed A10 time machine

Post by cathyf » Mon Oct 20, 2014 8:48 am

palerider wrote:do you have it's clock set right?
Every other time stamp is right on the money... I went to bed at 10:07, got up to go to the bathroom at 4:05 and got up at 6:05. Ok, I don't actually remember the 1:06-1:08 incident (when I woke up at 3:45 I was really psyched that I had been asleep until then with no bathroom break, and really didn't need to go. After being awake for 20 minutes my bladder did decide to wake up and I did need to go, so that's why I was turned off the machine for a few minutes then.) But, anyway, the clock on the Sleepyhead reports is right on with the clock on my computer, which is synched with the atomic clock in Colorado.

Pugsy, can you point me in the direction of the ResScan software? After the reviews here, I was looking forward to not having to use it, but alas...

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Re: ResMed A10 time machine

Post by lastlib » Mon Oct 20, 2014 11:54 am

What is an atomic clock, where can I get one? Are they a radiation danger? Why would you sync with one rather calling date and time service on the phone?

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cathyf
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Re: ResMed A10 time machine

Post by cathyf » Mon Oct 20, 2014 12:03 pm

lastlib wrote:What is an atomic clock, where can I get one? Are they a radiation danger? Why would you sync with one rather calling date and time service on the phone?
http://en.wikipedia.org/wiki/Atomic_clock

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palerider
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Re: ResMed A10 time machine

Post by palerider » Mon Oct 20, 2014 12:14 pm

cathyf wrote:
palerider wrote:do you have it's clock set right?
my computer, which is synched with the atomic clock in Colorado.
just out of curiosity, how do you think you are syncing to one of the clocks in colorado?

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Re: ResMed A10 time machine

Post by Guest » Mon Oct 20, 2014 12:35 pm

lastlib wrote:What is an atomic clock, where can I get one? Are they a radiation danger? Why would you sync with one rather calling date and time service on the phone?
Walmart has em.... the nice thing is it syncs the time every night and changes itself during the spring ahead and fall back times.

I have three and love em. Mine also tell what the day and date is also indoor/outdoor temps are real handy.

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cathyf
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Re: ResMed A10 time machine

Post by cathyf » Mon Oct 20, 2014 12:45 pm

palerider wrote:just out of curiosity, how do you think you are syncing to one of the clocks in colorado?
I thought that was where the NIST atomic clock was, but now reading this: http://tf.nist.gov/service/pdf/macintosh.pdf I know that the server machines are in Colorado but maybe the clock itself isn't.

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palerider
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Re: ResMed A10 time machine

Post by palerider » Mon Oct 20, 2014 12:57 pm

cathyf wrote:
palerider wrote:just out of curiosity, how do you think you are syncing to one of the clocks in colorado?
I thought that was where the NIST atomic clock was, but now reading this: http://tf.nist.gov/service/pdf/macintosh.pdf I know that the server machines are in Colorado but maybe the clock itself isn't.
there's a variety of clocks that nist has, and they're also tied in with the constellation that's overseen by the naval observatory in DC.

reading up on timekeeping, and NTP, and the fanaticism of horologists is quite interesting...

http://tycho.usno.navy.mil/

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palerider
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Re: ResMed A10 time machine

Post by palerider » Mon Oct 20, 2014 1:00 pm

cathyf wrote:
palerider wrote:do you have it's clock set right?
Every other time stamp is right on the money... I went to bed at 10:07, got up to go to the bathroom at 4:05 and got up at 6:05. Ok, I don't actually remember the 1:06-1:08 incident (when I woke up at 3:45
there have been bugs in older versions of SH where it wasn't tracking the time properly.

if you believe that's what's happening, then I suggest getting in touch with Mark, and sharing your data with him so that he can squish those bugs.

PM me, or him, for contact info. syncing your sd card on dropbox makes it easy for him to pull your data every day and hunt down bugs.

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Accounts to put on the foe list: dataq1, clownbell, gearchange, lynninnj, mper!?, DreamDiver, Geer1, almostadoctor, sleepgeek, ajack, stom, mogy, D.H., They often post misleading, timewasting stuff.

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cathyf
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Re: ResMed A10 time machine

Post by cathyf » Mon Oct 20, 2014 1:05 pm

Pugsy sent me the link to the ResScan software, so I will install it and check for discrepancies before sucking anyone else in to this. I have had wonderful AHIs (below 1) from the beginning -- sure hope it is real!

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Re: ResMed A10 time machine

Post by chunkyfrog » Tue Oct 21, 2014 5:30 am

The atomic clocks are great, but---
Look at a hand-held GPS for the most accurate time.
GPS uses extremely precise time measurements to calculate location.

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palerider
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Re: ResMed A10 time machine

Post by palerider » Tue Oct 21, 2014 8:50 am

chunkyfrog wrote:The atomic clocks are great, but---
Look at a hand-held GPS for the most accurate time.
GPS uses extremely precise time measurements to calculate location.
you do realize that each of the satellite vehicles (or gps satellites as they're more commonly called) has an atomic clock in it, kept sync'd with the ground based cluster at the naval observatory?

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Denial Dave
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Re: ResMed A10 time machine

Post by Denial Dave » Tue Oct 21, 2014 11:07 am

Way back when in my career in the U.S. Navy, I used to calibrate the atomic clocks that installed are on all of the submarines.

They are accurate to within 1 millionth of a second over 6 months

The NIST clocks are much more accurate

Dave

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