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ASand142 edited this page Feb 22, 2012 · 1 revision

Started today by forking the repository 2012-Physics-308L-Lab-4 on github and proceeded to clone the repo onto my local machine. After the folder was cloned I connected the DAQ card to the local machine and ran the program on the computer to verify that my board was working properly, I also noted down that the computer recognizes the unit as board# 0 with serial# 49.

Had some troubles getting data points to display on the example VI provided, tried tweaking with the settings on the function generator and got some data points but only a few here and there, Anthony suggested setting the channel on the VI to ch.0 and that worked.

  • What is the maximum frequency wave that you can reliably sample?

  • The highest freq. that you can reliably sample would be 1/2 of the sample frequency which is the nyquist frequency.

  • What limits the frequency?

  • The freq. is limited because aliasing can make a wave with one frequency look like another wave with a drastically different frequency. Aliasing example


Part 2 of the lab went well, set up a vi to read waves with a sample rate that can be set by the user allowing for one to account for aliasing.

Comments:

Anthony says

this is actually lab 4. Lab 3 was the twitter thing. You need to write up your thoughts on that so you can get a grade for the twitter experiment. Also link to your github repository