“…The existing timing system of JT-60U has been used to (1) produce and deliver master clock signals, which define the sequencing scenario of a plasma discharge, (2) create data collection signals synchronized with unusual or interesting plasma phenomenon, and (3) interrupt the plasma discharge sequence in the case of an off-normal event occurrence. The entire plasma discharge sequence takes typically about 7-10 min, and the timing system sequences the experiment from 60 s before plasma initiation to the end of the discharge [1,2].…”