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The GE DS200TBSAG1AAA is a Serial Communication Termination Module (TBSA) used in the GE Speedtronic Mark V Gas Turbine Control System, particularly for applications involving 1$\text{LM}$ series aeroderivative gas turbines (like the 2$\text{LM6000}$).3
Its function is essential for the reliable operation of the turbine’s fuel and control systems.
🔩 Key Function and Components
The board is often referred to as the LM Transducer Board because it provides the necessary interface and signal termination for components unique to the $\text{LM}$ turbine package.
1. Serial Communication Termination
The primary role of the 4$\text{DS200TBSAG1AAA}$ is to provide signal termination for high-speed serial links.5 Proper termination is necessary to prevent signal reflections on the communication lines, which would otherwise cause data corruption and control failures.
2. Control of FMVED Motor Drivers
This board directly interfaces with and provides communication channels for the FMVED (Fuel Manifold Valve Electronic Driver) modules.6 These modules are responsible for the precise positioning of the fuel metering valves.
The board contains four critical connectors that define its role:7
| Connector | Connection Purpose | Detail |
| P3 | TCSA-to-DLE $12\text{ V dc}$ Power | Provides a power connection. |
| P4 | TCSA-to-FMVED $12\text{ V dc}$ Power | Provides power to the FMVED modules. |
| P5 | FMVED-to-UCPB Communication Channel | This is one of the serial communication channels to the UCPB (Unit Control Processor Board). |
| P6 | FMVED-to-UCPB Communication Channel | This is a redundant/alternate serial communication channel to the UCPB, serving the exact same purpose as P5 but via a separate line. |
3. Transducer Signal Conversion
As an LM Transducer Circuit Board, it includes a transducer module that helps process the conversion of input energy from the turbine’s sensing systems into the electrical output required for the Mark V’s central control unit (UCPB) for regulation and monitoring.8
🛠️ Configuration and Series
- Part Number Breakdown: The A suffix indicates an artwork revision, and the final AAA denotes the full revision history, with “A” being the first revision for each functional area.
- Installation: In a typical Mark V cabinet, this board is usually situated in a specific slot, such as location 8 of the 9$\text{R2}$ core.10
- Hardware Jumpers: The board is equipped with several manually-moveable hardware jumpers (e.g., 11$\text{JP1}$ to 12$\text{JP16}$) which are used to configure the board for specific reception and transmission settings of the serial communication circuits.13
