It will completely erase the card but when you put it back in the machine, it will be re-written. All they want is the hours and that will be there. You'll get detailed data for the past 7 days then limited data for day 8 on back.
You can format the card by putting it in your computer, going to "My Computer", right clicking it's icon, and choose "format". But be careful and make sure you are right clicking on the correct drive! It will say SD Card or similar.
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Thanks for the info on formatting the card. I'm reading the led screen every am right after sleep and the data seems to get written very quickly (no delays that I can determine). As a precaution, I'll bring both the 'data' card and the S9 with me to the DME (minus the humidifier). This DME likes to play her cards very close to the chest. I went in to pick up my new cushion on 1/31 and asked 'how am I supposed to know if I'm at 70%? Her response was that I'm not to worry about it and she will determine if I am. I don't like that and feel like I'm being treated like a child. I know something is wrong with the SD card because I downloaded the sleepyhead software about two weeks ago and it worked great for a few days (it wa giving me the graphs) but now it just gives AHI info and the little cube spins around saying 'no data'. Weird thing is the AHI it gives me in Sleepyhead doesn't agree with AHI shown on the led screen of the S9. I will request a new SD card frrm the DME and tell her upfront that I will be using the new Sleepyhead (when it comes out) and/or the Rescan to give me current data and that is the way it will have to be.
when you insert the card into the machine
display a message briefly on the screen "Reading SD card"
and data get copied from the machine to the card
if any problem with the card, the S9 would not read the card and display different message
either the card inserted in locked position
or the S9 detect something written on the card and she like to erase the data on the card before coping new data on the card
its weirdo but that how it works
ResScan shows better compliance reporting but don,t work with Mac computers
02-09-2013, 10:59 PM
(This post was last modified: 02-10-2013, 06:51 AM by vsheline.)
(02-09-2013, 08:05 PM)AuntElizabeth Wrote: I will request a new SD card from the DME and tell her upfront that I will be using the new Sleepyhead (when it comes out) and/or the Rescan to give me current data and that is the way it will have to be.
Hi AuntElizabeth, welcome to Apnea Board!
You don't need to request a card from the DME.
I bought a package of two SD cards at Walmart for around $10. The SD card only needs to be 1GB capacity, but I think the ones I got were 2G and work great. I think some S9 machines are not able to work with SD cards larger than 2GB, but more recently manufactured S9 machines can handle the larger capacity SD cards as well.
If you put a new SD card in the machine and it asks if you want to reformat it, you can say yes.
Anyway, I think the machine stores in itself detailed data for the most recent 7 days, and would write it onto a new blank card if one is put in the machine. CORRECTION: I just checked. No, only the daily statistics and daily summary data is stored in the machine and will get written onto a blank card.
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