Description
🔹 Product Description
The GE DS200CTBAG1A, also identified by the detailed board number DS200CTBAG1ACC, is an Analog Termination Board for the GE Mark V Speedtronic turbine control system. The CTBA board serves as a termination and interface point for the Mark V Common Data Processor, handling analog I/O and communication connections within the control system. It is associated with the C-core and provides interfaces for IONET and COREBUS communication, while analog signals can be connected through the associated signal-conditioning circuitry. The board can accommodate 4–20 mA signals as well as shaft voltage and shaft current signals, making it suitable for turbine control, monitoring, and maintenance applications.
🔹 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Model | DS200CTBAG1A / DS200CTBAG1ACC |
| Series | Mark V Speedtronic |
| Product Name | Analog Termination Board |
| Functional Acronym | CTBA |
| Place of Manufacture | United States |
| Product Status | New Surplus / Original |
| Dimensions | Approx. 16 × 16 × 12 cm |
| Weight | Approx. 0.8 kg |
| Board Location | Mark V C-Core / Common Data Processor |
| Power | System-dependent |
| Discontinued | Legacy product; no longer supported by the original manufacturer |
🔹 Key Features
• Designed for GE Mark V Speedtronic turbine control systems
• Functions as a Common Data Processor termination board
• Provides analog signal termination and system communication interfaces
• Supports 4–20 mA input and output signals
• Supports shaft voltage and shaft current signal connections
• Provides IONET and COREBUS interfaces
• Includes terminal strips, connectors, relay, resistor networks, and jumper switches
• Includes a bypass relay to help maintain COREBUS communication during loss of board power
• Suitable for gas turbine, steam turbine, and industrial turbine control applications
• Exact revision and connector configuration should be matched before replacement
🔹 Q&A
Q: What is the DS200CTBAG1A used for?
A: It is an Analog Termination Board used in GE Mark V systems to provide signal termination and communication interfaces for the Common Data Processor.
Q: What is the relationship between DS200CTBAG1A and DS200CTBAG1ACC?
A: DS200CTBAG1A identifies the base board model, while DS200CTBAG1ACC identifies a specific detailed revision of the CTBA board. The complete board number should be matched before installation.
Q: What signals can the CTBA board handle?
A: The board is associated with 4–20 mA input/output signals, shaft voltage, and shaft current signals.
Q: Where is the board installed in the Mark V system?
A: The CTBA is associated with the Mark V C-Core and Common Data Processor termination circuitry.
Q: Does the board provide communication interfaces?
A: Yes. The board includes IONET and COREBUS-related interfaces used within the Mark V architecture.
Q: What should be checked before ordering a replacement?
A: Verify the complete DS200CTBAG1A/DS200CTBAG1ACC number, all revision letters, connector labels, jumper positions, board location, and existing Mark V system configuration.
🔹 Recommended GE Models
- DS200CTBAG1A – Analog Termination Board
- DS200CTBAG1ACC – Common Data Processor Termination Board
- DS200CTBAG1ADD – Mark V Terminal Board
- DS200TCCAAG1A – Analog I/O Board
- DS200TCCAAG1B – Analog I/O Board
- DS200TCCAAG1BA – Analog I/O Board
- DS200TCEAG1B – Mark V Termination Board
- DS200TBQAG1A – Terminal Board
- DS200TBQBG1A – Terminal Board
- DS200DTBCG1A – Mark V Terminal Board
- DS200DTBDG1A – Mark V Terminal Board
- DS200CDBAG1A – Contactor Driver Board
- DS200CPCAG1A – Contactor Pilot Board
- DS200ADPAG1A – Genius Adapter Board
- DS200DSPAG1A – Digital Signal Processor Board



