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The General Electric DS200TCDAH1B, also cataloged as the DS200TCDA Digital I/O Board, operates as a dedicated hardware component for contact signal processing and network communication routing within Mark V Speedtronic Turbine Control System platforms.

Hardware Specifications

Parameter Specification
Model DS200TCDAH1B
Brand General Electric
Origin USA
Weight Standard PCB weight (~0.55 kg / 1.2 lbs)
Dimensions Standard Mark V full-height circuit board profile
Operating Temp 0 to 60 deg C
Power Consumption Standard backplane power rail draw
Series Mark V
Functional Acronym TCDA
Functional Revision Revision B
PCB Coating Conformal Coating
Processor Architecture Onboard microprocessor with socketed PROM modules
Status Display 1 Block of 10 diagnostic LEDs, 1 side-visible status LED
Ribbon Interface 2 50-pin ribbon connectors (Designated JQ and JR)
Auxiliary Connectors 2 3-pin connectors (Designated JX1 and JX2)
Hardware Jumpers 8 Position jumpers (JP1/J1 through JP8/J8)
Diagnostic Aids Multiple board circuit test points (Designated TP prefix)

Deterministic Network & Backplane Integration

Interfacing directly with the Speedtronic Mark V control core, the module coordinates discrete logic processing across deterministic IONET communication channels. Channel-to-channel communication latencies are minimized via onboard microprocessor management, ensuring synchronized data exchange across redundant control paths. The integrated conformal coating provides environmental protection against atmospheric contaminants, preserving signal trace integrity and preventing bus noise during continuous high-density I/O scanning cycles.

Frequently Asked Questions

Q: What specific functions do jumpers J2, J3, J4, J5, and J6 perform on the DS200TCDAH1B?

A: Jumpers J2 and J3 configure the IONET termination resistors, while jumpers J4, J5, and J6 establish the hardware IONET ID assignment for network node identification.

Q: How do the 50-pin connectors JQ and JR interface with companion terminal boards?

A: Connector JQ connects to connector JQR on the DS200DTBA board via a 50-pin ribbon cable, while connector JR receives digital contact input signals from the DS200DTBB expansion board.

Q: Which jumpers are reserved strictly for factory testing and must remain unaltered?

A: Jumpers J1 and J8 are configured exclusively for factory testing routines and must not be adjusted or accessed during normal operational service.

Field Installation Guidelines

  1. ESD Safety Rules: Wear a grounded wrist strap connected to cabinet ground prior to removing the conformally coated board from its anti-static packaging.
  2. Main Power Shutdown: De-energize the Mark V card cage power supply before inserting or removing the board to avoid damaging backplane interface logic.
  3. Card Alignment: Align the PCB edges with the rack card guides and press the assembly into the card cage until the backplane connectors seat completely.
  4. Ribbon Cable Cable Routing: Connect the 50-pin ribbon cables to headers JQ and JR, ensuring the header locking latches engage fully to secure the signal paths to the DS200DTBA and DS200DTBB boards.
  5. Jumper Position Audit: Verify that jumpers J2 through J7 are matched exactly to system documentation and site network requirements prior to restoration of power.

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