The DS3800NGPA is a PCB from GE for the Mark IV(Speedtronic) series. The Mark IV, which was designed for gas/steam turbine control, is excellent for automating such procedures as cool down and startup. It can also maintain the system within safe operating conditions.
The DS3800NGPA functions as a gain programming card. It has the following specs:
The board is marked for alignment along two edges. It is lettered (A-J) along its top edge and numbered (10-80, by tens) along its left edge.
The board is factory drilled. Extractor clips are installed in both right-hand corners. Extractors are beneficial for both extraction and insertion and give technicians an alternative handle to grasp the PCB by, which saves delicate circuitry.
The board can accept an optional daughter board. When the auxiliary is installed (DS3800DGPA) the motherboard has access to six extra trim potentiometers and multiple snap-in PCB screw mounts. The DS3800DBPA is held in place by 29 metal pins located in two lines center-right of the board.
The board has seven LEDs (six red, one amber.) These are interspersed with 17 TP test points.
The board has one rotary potentiometer, five transistors including a Motorola power bipolar transistor, and multiple integrated circuits.
Resistors on the DS3800NGPA tend to be metal film, but a few are carbon composite. Capacitors vary in their capacitance but include a 25v 50 μf capacitor located near the center of the board.
Datasheets and manuals for the DS3800NGPA were originally distributed by General Electric. These technical support publications may be the best resource installation guidelines.