Show calibrated value as acquiring

Hello, I hope someone good at Matlab can help me on this issue!

What I can do so that the data in "getdata" is calibrated? What I mean is, can the scope show the units that i want instead of volts? I want to see the real time plot with the actual unit (mmHg, in my case), not volts!

thank you so much!

Answer 1

[Walter Roberson]

You need to tell us more about what kind of device you are reading from and which interface driver you are using to the device.

[Kay]

I am using the USB-6009 from National Instrument!

My program is to read the blood pressure and blood flow from a rat!

After acquiring the data, I calibrate and transfer the data to mmHg and mL/min!

So, the data in "getdata" is all in Volts, I wondered if i can calibrate the data once it gets into "getdata"! (since i want to plot it at the same time!)

[Walter Roberson]

I would suggest using getdata() with 'type' 'native', shifting the resulting integer up so that the lowest possible value is 1, and using that as an index into a lookup-up table of calibrated values (I'm assuming the voltages might not be linear response.) I don't know at the moment how you would change the legend on the scope.