DS3800HMHA

About the DS3800HMHA

The DS3800HMHA is a board component designed by General Electric (GE) to be a part of a Speedtronic turbine control system.   This board is part of a Mark IV control system.  The Mark IV was first introduced in 1984 as the first Speedtronic system that offered triple modular redundant control, a significant improvement over previous Speedtronic systems. 

The DS3800HMHA functions as an MH controller.  The board is 0.63 pounds.  It includes two extractor clips that have been inserted into the two front corners of the board.  These extractor clips allow the board to be more easily pulled from its place within a rack system when it is time to replace or repair it.   This board edge also includes two right-angled connectors that both include clips to hold cables secure.  Additionally, this edge has three LED indicators.  Two of these indicators are red while the other is yellow. 

Other board components include a backplane connector located on the opposite side from the right-angled connectors mentioned above.  In the center of the board are multiple integrated circuits, resistor network arrays, capacitors, diodes, and resistors.  There are also two lines of jumper switches and five more jumpers scattered around the board.  Jumpers allow the board to be customized as the end-user needs.   The board is marked with several codes that will give the user additional information about its revision levels.  

For a deeper understanding of the board and about the Mark IV system overall, please turn to original documentation from General Electric like manuals and user guides.