IS200EGPAG1A is an OBS Gate Pulse Amplifier Card manufactured by General Electric as part of the Mark VI series used in gas turbine control systems. Each of the Speedtronic systems has improved upon the preceding iteration. As a result, the MKI's modest (by today's standards) circuit boards have been replaced by the multi-frame Mark VI, which includes triple redundant backups and Ethernet functionality. The Mark VI uses a Windows-based PC HMI, or operator interface, that provides one-stop access to critical system data, including time tags for alerts and events. The Exciter Gate Pulse Amplifier Card is an Exciter Gate Pulse Amplifier Card. The Card is intended to interface with the power bridge's control. It also accepts gate orders from the ESEL board (up to six) and utilizes them to regulate SCRS gate firing on the bridge.