The DS3800NSFC1J is a component manufactured by GE for the Mark IV series. The Mark IV manages gas/steam turbine systems and is built with triple redundant back-ups on all critical controls and protection parameters.
The DS3800NSFC1J functions as a system firing board. It is designed to accept a very small optional auxiliary card (DS3800DSFC) which, when installed, gives the motherboard access to an additional potentiometer. The auxiliary attaches via and is held in place by two board-to-board pins. It is supported by four nylon pins already attached to the surface of the DS3800NSFC1J.
The DS3800NSFC1J has one light emitting diode, which is labeled “IMOK.” This is an amber LED. The board has twelve test points and two PCB mating connectors. One of these connectors, which is a right-angled male connector, is marked 218A4637-P4 9707. The other connector populates the left edge of the board and is also a right-angled connector.
The DS3800NSFC1J has a row of spare PTH near its top edge. It has one multi-positional jumper switch, five resistor network arrays, and nine transistors. Resistor arrays may be used for voltage division.
The DS3800NSFC1J is built with extractor clips installed. Extractors aid technicians with both installation and extraction, by giving them both a handle and a lever point to pull the PCB from tight locations. The board is alignment marked on one edge and factory drilled.
The DS3800NSFC1J has twenty-eight circuits. This includes oscillators, hex inverters, octal d-type transparent latches, and quad 2-input positive NAND buffers.
All technical support for the DS3800NSFC1J was the responsibility of GE. This includes publications like datasheets and manuals.