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

Contec CMS-50F display change - problem?
#1
Question 
Contec CMS-50F display change - problem?
I've used my CMS-50F almost every night for the last year and a half, but within the last week or so I've noticed that some display digits are changing color and just wondering if there's a problem.

On standby, with no sensor attached, it reads normally, with "Finger Out" in the display, two large blue bars where the SpO2 reading would be and three smaller green bars in the pulse section.  (There's also a little "34" in blue just to the left of the SpO2 area - what's that about?)

When in operation, the pulse number readout looks fine, but the SpO2 reading is always in yellow now, whereas I remember it being in blue when in the mid-to-high 90s and yellow only when low, maybe below 90 or so.

I download every day into SleepyHead along with my APAP data and the data looks fine; it's just the odd color change in the SpO2 reading.  Maybe it's just a display-driver hardware glitch, but I'm wondering if anybody's seen it, if it's a developing problem and if there's any way to reset/reboot the device to see if that helps.  I've checked the documentation, such as it is, as well as SpO2 Assistant to see if I can adjust/tweak and couldn't find anything.

Maybe it's no big deal, but thought I'd check with the experts. 

Thanks guys, and Happy New Year!
Post Reply Post Reply






Donate to Apnea Board  
#2
RE: Contec CMS-50F display change - problem?
It seems that almost all OLED displays suffer from eventual dimming. My CMS50F became almost useless some time ago, and others have reported the same problem. I don't know what factors affect the life of an OLED display, but I don't envy the people with big OLED TVs.
Apnea Board Monitors are members who help oversee the smooth functioning of the Board. They are also members of the Advisory Committee which helps shape Apnea Board's rules & policies. Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
Post Reply Post Reply
#3
RE: Contec CMS-50F display change - problem?
I'm starting to think "hardware problem" too.  But it's not dimming, it's just always yellow.  Maybe the driver chip has decided to not make blue anymore, although it still shows blue bars in place of the numbers when no sensor is connected.

Otherwise, it's working so I soldier on with it, as a numbers geek I like to have the data.  Any idea what that little number to the lower-left of the SpO2 is?

Thanks.   Thumbs-up-2
Post Reply Post Reply
#4
RE: Contec CMS-50F display change - problem?
JimInPT, the little numbers next to the SpO2 reading are the Low SpO2 alarm setting. Mine says 85. You can change that value in one of the menu's.
I'm wondering if the yellow color means there is something wrong with the fingertip sensor maybe. Try cleaning the sensor with an alcohol swab and see if it does anything.

I noticed on the back of mine there is a tiny hole with the letters RST just above it. Presumably this is a reset button??? Not sure if it would help you

Using a MacBook Air (2017), MacOS Catalina (10.15.3), OSCAR v1.0.1-r-1
In a VM (if needed): Win10 1909, Ubuntu 1804 LTS


Installing OSCAR on a Mac
Download OSCAR
Organizing your OSCAR charts
Attaching images and files for the forum
Post Reply Post Reply






Donate to Apnea Board  


Possibly Related Threads...
Thread Author Replies Views Last Post
  Problem with mask and EPR jomama 48 608 4 hours ago
Last Post: jomama
  Help-needed-with-change-from-APAP-to-CPAP Pat Knoll 20 357 02-01-2020, 02:03 PM
Last Post: Pat Knoll
  A problem with the machine or a very strange breathing pattern? dark 4 231 01-20-2020, 05:21 PM
Last Post: Sleeprider
  are leaks a problem? goodn 3 222 01-08-2020, 02:33 PM
Last Post: mesenteria
  [Pressure] Pressure change results PaulaO2 18 1,006 01-06-2020, 03:03 PM
Last Post: PaulaO2
  Forum change? OMyMyOHellYes 5 277 12-29-2019, 03:13 PM
Last Post: Sleepster
  Weinmann/Lowenstein Prisma Smart how to change CPAP / APAP Karpina 1 247 12-24-2019, 04:22 AM
Last Post: DeepBreathing


New Posts   Today's Posts






About Apnea Board

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