How to obtain data (voltage) from a Signal Generator connected through USB port and plot voltage vs. time
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Hello Everyone, Hope you are all fine. I am facing some problem with my assignment. The assignment is to connect a Signal Generator to pc through* USB* port and read data from it. Then I have to write a program in MATLAB that uses the data to plot a voltage vs. time graph. The program should be real-time. That is if I change the amplitude of signal the plot will change immediately. Your help is much appreciated. Thank You.
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saima
am 5 Jun. 2012
put some details about the problem. it would be easier to help if you explain your problem
Walter Roberson
am 5 Jun. 2012
Using USB as your data interface is not compatible with real-time work or changing the plot "immediately". USB inherently works with packets (clumps) of data and MATLAB cannot read from a USB serial interface with less than a 40 millisecond delay after the data is generated, because of the way that USB was designed.
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Walter Roberson
am 9 Jun. 2012
http://www.mathworks.com/help/techdoc/ref/serial.html
You will find communicating with the signal generator easier once you have located the referejce documentation for that particular model of signal generator, what-ever it is.
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