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GE DS3800HPMA Ported Memory Card
The GE DS3800HPMA is a specialized Ported Memory Card used in the GE Speedtronic Mark IV series of turbine and generator control systems. It is a legacy part, no longer in production, and is primarily found on the surplus and refurbished markets for the maintenance and repair of older systems.
Function and Purpose
The primary function of the DS3800HPMA is to provide a memory interface that can be accessed by multiple processors or controllers. In a complex industrial control system, different modules often need to read from or write to the same memory space. A “ported” or “dual-ported” memory card facilitates this by having multiple access ports, which allows multiple devices to access the memory simultaneously without conflicts. This is crucial for:
- Real-Time Data Sharing: It enables real-time data to be shared quickly and efficiently between different processors, which is essential for a system that requires split-second decisions based on live sensor data.
- Efficient Communication: It offloads communication tasks from the main processors, allowing them to focus on their primary control functions.
- Data Integrity: The card’s design and internal logic handle synchronization and arbitration, ensuring that multiple devices can access the memory without corrupting the data.
Technical and Design Features
The DS3800HPMA is a robust, industrial-grade circuit board designed to operate in a demanding environment.
- Legacy Part: The “DS3800” prefix indicates that it belongs to the legacy Mark IV series, a pioneering control system for gas and steam turbines in the late 1980s.
- Dual-Ported Design: The card’s name “Ported Memory” implies that it has two or more independent access ports. This allows different components to access the same memory location simultaneously, increasing data throughput and system efficiency.
- Connectors: The board features connectors that allow it to interface with the backplane of the Mark IV control rack, enabling communication with other cards in the system.