The DS3800HLXA1C1E is a part of General Electric’s turbine control system from the 1980s called the Mark IV Speedtronic system. This system was one of GE’s most popular. It was the first to offer distributed control with microprocessors in three different (redundant) parts of the system all voting on turbine control. The Mark IV was a significant improvement over earlier (Mark I and II) Speedtronic systems because of this triple modular redundant arrangement and offered a significant reduction in downtime because of it.
The DS3800HLXA1C1E functions as a high-speed data board. It includes six fiber-optic connectors along its front edge. These are set at a 45-degree angle and are spaced equally along this edge. The front board edge also includes a single toggle switch and a red LED indicator that has been marked “RUN.” Directly behind these components, the board has a line of TP test points and several relays. Other board components also include spare PTH, capacitors, integrated circuits, resistors, and diodes. The board is marked with the GE logo, with several codes, and with the board ID number.
The corners of the DS3800HLXA1C1E have been factory drilled to allow for mounting. Two of these are taken up by extractor clips. The rear board edge includes a backplane connector to allow the board to communicate with other rack components.
Additional information about either the Mark IV system or about this specific board can be sourced through original General Electric documentation such as data sheets, user guides, and product manuals.