Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Sleepy Head - Where did Flow Rate and Mask Pressure go?
#1
Hi,

So first, my machine is a ResMed S9 Autoset and I have a 1 gig card in it.

I was looking back in the data and I noticed that going back to February 8th, data for Flow Rate and Mask Pressure are included BUT... on the 7th, this data is not present (other data is, but not FL and MP). What's going on here?

The only explanation I can think of is that ResMed is using the file as a circular buffer and they are only keeping X number of days of data for the more storage intense metrics but come on... even for the MOST data intensive metrics on these things, the amount of data generated is trivial. They're only using 23 megabytes for a 1 gig card. Looking at the file structure I do see that the largest .edf files which are tagged with a _BRP suffix are only present going back 7 days.
Post Reply Post Reply



Donate to Apnea Board  
#2
That's by design, so if you want to save the graph data beyond 7 days, you'll have to do it on your own media by using ResScan or Sleepyhead software.

The SD card has the following limitations:

365 summary sessions
30 detailed sessions
7 high-rate detailed sessions

Dude
Post Reply Post Reply
#3
Danke... I'm guessing whomever they contracted to do the firmware for them probably did it in 1998 and they just never bothered to update it. Smile
Post Reply Post Reply
#4
The S9 saves only 7 days of high sample rate data on the card.
That's flow and pressure.

Admin Note:
JustMongo passed away in August 2017
Click HERE to read his Memorial Thread

~ Rest in Peace ~
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  A data logging accelerometer for on chest, head or limbs 2SleepBetta 4 194 07-16-2018, 08:03 PM
Last Post: CPOP
  Flow Rate [mine too shallow?] trance 4 285 07-15-2018, 02:35 PM
Last Post: ShaunBlake
  One month in Sleepy Head Charts SleepingJody 4 183 07-14-2018, 10:45 AM
Last Post: snorybob
  Flow rate explanation yankees123 14 436 07-11-2018, 05:41 PM
Last Post: yankees123
  AHI numbers are good, but still have concerns (long apneas & flat looking flow lines) ColoradoMom 7 371 07-06-2018, 11:45 AM
Last Post: ShaunBlake
  Can someone help me with these flow rates? emos12 59 3,717 06-27-2018, 08:28 AM
Last Post: emos12
  Flow Limitations don't make sense Personxyz 4 315 06-22-2018, 07:42 AM
Last Post: Sleeprider

Forum Jump:

New Posts   Today's Posts




About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.