EMG/EP system of new type use new trolley, it keeps the complete function and parameter of fiber optical type. Features:1.Test item:EMG、NCV、SEP、AEP、VEP、P300 and so on;2.Pre-amplifier:2/4 channels optional,and it can be update to 8 or 16 channels;3.Support EDF and TXT formats; 4.Modular design:Enables different combinations for different examinations,and makes transportationand maintenance more easier;5.Software operation:Simple software interface that can show the Nerve/muscle color map,and Mult-lingualsoftware that can be update for free lifelong;