DS3800NADA1E1E

About the DS3800NADA1E1E

The DS3800NADA1E1E from General Electric is a printed circuit board designed to be used as an analog-to-digital converter card within the Mark IV Speedtronic system. The Mark IV, a steam and gas turbine control system, was a forward design that used integrated chipsets and intentional redundancies on critical controls and protection parameters. This two-out-of-three voting redundancy allows the Speedtronic system to shunt responsibilities as needed when chipsets experience electronics issues, to keep the whole system up and running.

The DS3800NADA1E1E is designed with:

• -twenty-six integrated circuits. This includes crystal oscillators, up/down binary counters with dual clocks, octal buffers, dual positive-edge-triggered D flip-flops, and an analog/digital converter. The last, (at U3) is a complete 12-bit ADC on a chip. Data access times of 57 ns make the parts compatible with 8- and 16-bit microprocessors and digital signal processors.

• -one LED (amber,) labeled.

• -three TP test points, labeled.

• -two extractor clips

• -three PCB reinforcement crossbars, made of anodized aluminum. These are in accordance with IEEE recommendations P896, Nubus, Multibus II etc, that links all connectors.

• -two potentiometers for voltage division

• -spare PTH at the center of the card.

• -one female connector (218A4637P2)

• -one male connector (218A455-1)

The DS3800NADA1E1E is marked in several places on the board: top edge (A - J) for alignment, behind the male connector (numbered by 10s,) and with the code 6BA09 on the bottom edge.

Installation guidelines for the DS3800NADA1E1E may be found within data sheets and manuals published by General Electric. As the original manufacturer, GE was responsible for providing technical support for the DS3800NADA1E1E.