why does the export data did not correspond to input data in tina?

Steven,

Simulators adjust the time steps that they used in order to achieve convergence and the proper solution. You can set the maximum time step to a fixed value, however, the simulator may still need to use a shorter time step based on the algorithm being used for solving the matrix. I will check to see if there is a way to have TINA-TI only output the data at a certain sampling rate. I am not familiar with the capability.