DS200TCDAF1BCI is a Software PROM Set manufactured and designed by General Electric as part of the Mark V Series used in GE Speedtronic Control Systems. The Mark V I/O system is purpose-built to directly connect with various turbine and generator components, such as magnetic speed pickups, servos, LVDT/Rs, vibration sensors, thermocouples, and Resistive Temperature Devices (RTDs). This design enables smooth integration and communication between the Mark V and these critical devices, ensuring efficient and dependable operation.