Description

General Electric designed the DS3800NADA1 to function as an analog-to-digital converter card within their Mark IV Speedtronic series.The Mark IV, a gas and steam turbine control system, was one of the first control systems to use integrated chipsets with two-out-of-three voting redundancy on protection parameters and critical controls. This intentional redundancy allows the Speedtronic system to stay up and running even if one board has an electronics issue, as its responsibilities are shunted to other boards that have been designed as a backup.

The DS3800NADA1 has:

• -one amber LED on its right edge

• -three test points on its right edge

• -two potentiometers

• -one male connector (218A455-1 Amp 533002-1)

• -one female connector (87936-4 218A4637P2)

• -spare plated through holes

• -three cross bars along its long dimension. These have been put in place for board stiffening.

• -is factory drilled

• -has two extractor clips installed

The DS3800NADA1 has twenty-six integrated circuits.These include a DOC-20E 8000.000KH2 KDS-6C crystal oscillator, SN74LS193N Up/down binary counter with dual clock, SN74LS244N Octal buffers, and DM74LS74AN dual positive-edge triggered d flip-flops with preset, clear and complementary outputs.

The DS3800NADA1 has been marked on one edge (A through J) for alignment purposes. It is marked on its bottom edge '6BA09,' and has been numbered behind its male connector by tens.

Technical support for the DS3800NADA1 was provided by General Electric. The manufacturer also produced a variety of manuals and data sheets to help the user with maintenance and installation. We recommend referencing these publications as needed for guidance.