The RexWinLab-8000 then carries out the program automatically without any need of a personal computer. Nevertheless, the control algorithm can still communicate with the Matlab/Simulink running on a personal computer connected to the PAC and exchange the data in real-time. The data from all sensors are thus time-synchronized, centralized and saved for further analysis. It allows us to prepare the whole experiment in advance, download it into the PAC in the laboratory and during the experiment to monitor waveforms of the measured quantities with possibility to manually affect the experimental conditions.