Asked by yihui
on 19 Sep 2013

What do the x-Coordinate and y-Coordinate mean? And what is the range of y?

Answer by Azzi Abdelmalek
on 19 Sep 2013

Edited by Azzi Abdelmalek
on 19 Sep 2013

Accepted Answer

You can read about Pulse_oximetry

the range of y depends on your Pulse_oximetry, you have to read its characteristics.y is a voltage which is related to Molecular oxygen concentration, this relation is also is given in your Pulse_oximetry characteristics

yihui
on 19 Sep 2013

http://www.ufiservingscience.com/datasheets/1020manual.pdf this is the one i use for my lab~

Azzi Abdelmalek
on 19 Sep 2013

Ok, have you read the specifications in page 7, it says the output range is 5-50mV

yihui
on 19 Sep 2013

Log in to comment.

Answer by Image Analyst
on 19 Sep 2013

x is most likely time. If it's an oscilloscope, the y is voltage but if it's a custom program, y could represent "percent oxygen" or something else.

Image Analyst
on 19 Sep 2013

yihui
on 20 Sep 2013

Image Analyst
on 20 Sep 2013

Log in to comment.

Opportunities for recent engineering grads.

Apply Today
## 2 Comments

## Azzi Abdelmalek (view profile)

Direct link to this comment:https://www.mathworks.com/matlabcentral/answers/87628-what-do-the-x-and-y-axes-of-this-pulse-oximeter-signal-represent#comment_169803

How are we supposed to know?

## yihui (view profile)

Direct link to this comment:https://www.mathworks.com/matlabcentral/answers/87628-what-do-the-x-and-y-axes-of-this-pulse-oximeter-signal-represent#comment_169804

i mean,the signal is on oscilloscope,is it Definitely that x represent time,y represent voltage?

Log in to comment.