AMIKON Industrial Supply / Turbine Control IS200TTURH1B GE Mark VI Turbine Terminal Board A turbine termination board used in the Mark VI control architecture for turbine speed pickup signals, shaft monitoring, generator and bus voltage sensing, and generator-breaker synchronization circuits. 01 Signal Interface & Control Role How the board fits into the turbine control system TTUR provides field termination for selected turbine-control signals and connects those circuits