MyDAQ ADC Characterization

[kev12]

and ramp.vi is something I found here on the forums to generate the voltage ramp that I wanted.

[Rscd27]

i did not find it!!! can you please send it too

[kev12]

Oh ok, sorry, let's see if it will attatch to this one.

[Rscd27]

I am sorry for the delay in the answer, tomorrow i will make a test with myDAQ.

[Rscd27]

Hello,

I have make some test i have som suggestions and results for you:

1-The ramp Vi works fine and i was able to read the ramp with another device. However you are generating the signal and trying to read it in the same VI using DAQ assistant. I will recommend you use the DAQmx functions instead. Basically since you want to create two task in the same device they have to be synchronize. Since the read task has to start before the write task in order to get all the data. You can use this guide yourself with this links:

http://www.ni.com/tutorial/5370/en/ Building an Analog Input VI in NI-DAQmx

http://www.ni.com/tutorial/5371/en/ Building an Analog output VI in NI-DAQmx

Here you can check how to synchronize task using DAQmx:

http://www.ni.com/product-documentation/4322/en/

I will also recommend verifying your sampling rate and the number of samples. Use this document for this: http://www.ni.com/white-paper/3016/en/

Give it a try and if you have questions please ask me.