DS3800SCG is a General Electric Circuit board under the Mark IV series. GE produced this PCB for the Speedtronic Mark IV turbine operation system. The Mark IV is simply one of many turbine-operating systems in the Mark series. This was the third system in the Mark series to be released. The Mark IV was designed to regulate and automate both steam and gas turbine operations. These components protect the turbine and its operators against injury that could occur if the turbine is operated in dangerous conditions.