Hello Huy Truong Tan Gia,
The block dialog contains the definition of the sine function. (Red frame)
For example, if the sampling time is 1e-3, it will be as shown in the figure.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/363016/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/363019/image.png)
stozaki
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!