求大佬,8bit ADC FFT仿真如图显示,其ENOB值竟高达15.而且下面有红色报错:Signal: ' v /I0/net5; tran (V)' : The signal x-axis vector values are not uniformely distributed. Data was interpolalated, which would create numerical noise and differences. To remove these errors, use uniform raw data points, and align the sample points with raw data points.这是什么原因呢