GE DS3800HIOB1H1G

Technical Specifications

LED Indicators: There are three LEDs, with the first one being amber labeled "IMOK", and the other two being red labeled "ADR" and "LACT".
Markings: The top edge is marked from A to J, the left edge is marked from 10 to 80 in increments of ten, and the right edge is marked as JB/JC/JD.
Integrated Circuits and Components: It has an Intel LD 8748 EPROM at U1, a SN74LS244N DIP integrated circuit at U12. The circuit at U5 is an oscillating chip set at 18.4320 MHz. There are also multiple capacitors, such as a 50 V 5 μF capacitor near the middle - right of the board, and many ceramic - covered metal film resistors of different values.

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Connector: There is a multipin male connector at the bottom edge of the board, marked 87936 – 2 218a4637p3.
Jumper Switches: There are a total of eight jumper switches. Seven of them are in a vertical line with the option of 0 or 1, and the other one is below the second integrated circuit with the option of “in” or “out”.
Test Points: There are seven test points. Six of them are along the left – edge of the board, labeled reset, data, D sync, sync, com, and test from top to bottom. The seventh TP is on the other side of the board, labeled “101”.

Functional Features

Input/Output Function: As an input/output card, it can realize the input and output of signals, and communicate with other components in the system.
Status Indication: The LEDs can indicate the working status of the board, such as whether the module is operating normally (“IMOK”), and other possible statuses indicated by “ADR” and “LACT”.

Application Scenarios

Gas Turbine Control Systems: It is mainly used in the Mark IV series of GE Speedtronic gas turbine control systems. It can be used for key control functions of gas turbines, such as safety interlocks, emergency shutdown (ESD), and combustor sequence control (SFC).

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