About the DS3800HL0A1EC
GE manufactured the DS3800HL0A1EC as a logic DR bus interface PCB (printed circuit board) to work within their Speedtronic Mark IV steam and gas turbine control system. The Mark IV can be used for air, fuel and emissions control, for sequencing turbine fuel for startup, and for startup, shutdown and cooldown procedures.
The DS3800HL0A1EC has the following specifications:
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Multiple integrated circuits, including Motorola I8623N SN74LS02N, Texas Instruments SN74LS240N Octal buffers, Motorola K8640A, Hitachi HD74LS175P DIP components, and SN74LS257BN multiplexers.
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Has 17 LEDs. This includes sixteen red and 1 amber LED.
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One male PCB straight-pin connector, located parallel to the short ends of the board, behind the LEDs.
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Spare PTH (plated through-holes) located behind the PCB connector.
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One toggle switch
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One A-mp connector located on one short edge. This is marked 218A4553-1 A-mp 102041-1 8141.
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Factory-drilled
The board is marked from 0-80 in increments of 10 behind the A-mp connector. It is marked on one long edge for alignment with A-J. Resistors on this board are typically metal film (ceramic covered.) Capacitors are small electrolytic, teal.
The DS3800HL0A1EC has five metal dividers running parallel to the short sides of the board. These separate the board into almost but not quite equal panels from top to bottom.
General Electric provided the original technical support for the DS3800HL0A1EC printed circuit board, including a data sheet and manual. These products should be consulted for information on the proper procedures for installing and maintaining this equipment. Only qualified electrical personnel should work on this or any other Mark IV components.
