How to obtain data (voltage) from a Signal Generator connected through USB port and plot voltage vs. time

Question

Adnan Jahangir 2012-6-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40323-how-to-obtain-data-voltage-from-a-signal-generator-connected-through-usb-port-and-plot-voltage-vs

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.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

saima 2012-6-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40323-how-to-obtain-data-voltage-from-a-signal-generator-connected-through-usb-port-and-plot-voltage-vs#answer_49948

put some details about the problem. it would be easier to help if you explain your problem

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Adnan Jahangir 2012-6-5

In other word, I have to program an oscilloscope with MATLAB. It will obtain data from a signal generator connected to USB port of computer and plot the voltage vs. time curve (As in an oscilloscope).

请先登录，再进行评论。

Answer 2

Walter Roberson 2012-6-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/40323-how-to-obtain-data-voltage-from-a-signal-generator-connected-through-usb-port-and-plot-voltage-vs#answer_49976

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.

4 个评论
显示 2更早的评论隐藏 2更早的评论

Adnan Jahangir 2012-6-7

Well the problem is I am not allowed to use any kind of tool-boxes. I have to write codes to perform the task.

Walter Roberson 2012-6-9

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.

请先登录，再进行评论。