The DS3800HMAC1G1E from General Electric is one of several versions of the company’s media access board designed as a component for their Mark IV turbine control system. The MKIV was a big step forward in reliability due to its triple modular redundant design. This was the first of the Speedtronic systems to offer this sort of design.
The DS3800HMAC1G1E is a small circuit board covered with a number of different components including a large vertical component that is marked as 206B3334G1. This component is mounted to the board using screw mounts connected from the underside of the board. The red metal plate includes four coaxial connectors that have been wired to the circuit board from the rear of the component.
The DS3800HMAC1G1E functions as a media access board. The board is used to govern the transmission of data between other system components. To do this, the unit has multiple connection points including the coax connectors previously mentioned. Other connectors include stab-on connectors, right-angled pin connectors, and right-angled cable connectors.
Other board components on the DS3800HMAC1G1E include transistors, resistors, relays, capacitors, jumper switches, and LED indicators. The board has over forty integrated circuits designed to do various jobs. The edges of the board are marked with numbers and letters for alignment and have been drilled for mounting.
More information about this board or about the Mark IV Speedtronic system, in general, can be found through GE documentation like manuals and user guides. AX Control can help you with sourcing replacements for these documents if you no longer have your originals.