1. A method for visualization of a functional sequence of a medical apparatus, the method comprising: receiving a mathematical model describing at least the medical apparatus; receiving a log file describing historical parameters of the medical apparatus, wherein the log file comprises at least one value of at least one electrical signal of the medical apparatus during the functional sequence; determining, by a processor, at least one state variable of the medical apparatus as a function of the mathematical model and the log file; converting the at least one state variable of the medical apparatus into a visualization signal; and visualizing the at least one state variable of the medical apparatus, the visualizing of the at least one state variable of the medical apparatus comprising displaying, by an output unit, a graphic image of the mathematical model.