The DS3800NSCE is a PCB from GE for the Mark IV series. This series was created by GE in 1982 for steam/gas turbine management. It was the third commercially available Speedtronic system, and was a significant technological jump forward compared to the MKI and MKII, as it used integrated micro-computers to run several platforms at once to monitor and protect the turbine system from issues like vibration, fire, loss of flame, and over-speed.
The DS3800NSCE is a smaller board with very few components. It is marked on one edge with its board identification number and the code 6BA01. It is marked ‘MAC’ on another edge. The board has been drilled and screws inserted near each corner, placed along an area of reinforcement.
The interior of the board has two communication components. One is a twenty-pin male vertical connector. This is labeled “JA.” The other is a twelve-pin female connector, which is labeled “JM.” This is laid out in a three by four grid. The board has one TP test point, one connector point (which is labeled J1,) and six trim potentiometers. Potentiometers may be used for the tuning, adjustment, and calibration of circuits.
The board has no capacitors or diodes. It has a set of spare PTH, or plated through holes. It has six CCRs (carbon composite resistors,) and three ceramic-covered metal film resistors. It is worth noting these nine resistors are numbered R20 through R28.
Our team will ship the DS3800NSCE to you in a static reducing protective sleeve. Technical support for MKIV components was provided by GE.