The IS200TBQGH2AAA is a PCB board component manufactured by the GE company for the Mark VI. The Mark VI is one of the final Speedtronic steam/gas turbine management platforms released by GE before the line became obsolete. The Speedtronic line began in the late 1960s with the release of the Mark I, continuing on through the 1990s with the Mark VI and Mark VIe. Each Speedtronic system used the most current technology available at the time of its release to create a reliable management system that could integrate with the turbine and increase overall efficiency through minimized downtime.
The IS200TBQGH2AAA is a Termination Module. The board is long and narrow. It has been factory drilled in all four corners as well as once along the bottom long edge. The three bottom drill holes are ringed by a conductive material. The opposite side of the board is populated by a long terminal block with sixty screw connections. These are placed in two lines of thirty each. As noted on the board surface, pins fifty-three through sixty are not used and are internally grounded.
The IS200TBQGH2AAA has two integrated circuits. Both circuits are transistors. It has sixteen ferrite chokes placed in a line of twelve and a line of four. Ferrite chokes suppress high-frequency noise. The board also has thirty-two metal oxide varistors. Varistors have an electrical resistance that varies with applied voltage. The board also has box resistors and several lines of capacitors. The board is marked with the board number, the manufacturer logo, and several codes.