Technical Specifications and Board Design
This VME backplane board provides the communication backbone for GE Mark V turbine racks. The GE DS200VPBLG1A DS200VPBLG1ACC connects multiple control cards through a standardized bus architecture. You can install this board at the rear of any Mark V rack enclosure. Its passive design requires no configuration or software setup. The board weighs approximately 1.2 kilograms. Its dimensions measure 30 cm in height, 35 cm in width, and 2 cm in depth.
| Parameter | Specification |
|---|---|
| Brand | GE Energy / General Electric |
| Model | DS200VPBLG1A DS200VPBLG1ACC |
| Category | VME Backplane Board / Passive Bus Backplane |
| Weight | 1.2 kg |
| Height | 30 cm |
| Width | 35 cm |
| Depth | 2 cm |
| Number of Slots | 10 VME slots (6U form factor) |
| Bus Type | VME64 (32-bit data, 32-bit address) |
| Bus Speed | 40 MHz maximum |
| Data Transfer Rate | 80 MB/s peak |
| Slot Spacing | 2.54 cm (1 inch) |
| Connector Type (per slot) | 3 x 96-pin DIN 41612 (P1, P2, J3) |
| Power Bus Capacity | 50 Amps at 5V DC, 20 Amps at ±12V DC |
| Impedance | 80 ohms ±10% (controlled) |
| Layer Count | 8-layer PCB |
| Energy Storage | None (passive component) |
| Component Count | 1 PCB, 10 x 3 DIN connectors, power terminals |
Bus Architecture and Signal Distribution
The backplane implements the standard VME64 bus for card-to-card communication. It distributes data, address, and control signals to all ten slots equally. The GE DS200VPBLG1A DS200VPBLG1ACC includes a dedicated power plane for each voltage rail. This design minimizes voltage drop across the backplane. The board uses controlled impedance traces for all high-speed signals. Consequently, signal reflections and crosstalk remain within acceptable limits. The backplane supports both master and slave VME cards simultaneously. A termination network sits at both ends of the bus.
Power Distribution and Current Handling
The board delivers 5V DC to all slots through wide copper planes. It also distributes ±12V DC for analog card requirements. The GE DS200VPBLG1A DS200VPBLG1ACC handles up to 50 Amps on the 5V rail without overheating. Heavy-duty terminal blocks accept external power supply connections. The board includes separate return paths for logic and chassis ground. This separation prevents ground loops from affecting sensitive analog measurements. The power plane uses 4 oz copper for low resistance.
Installation and Operational Guidelines
You must mount this board inside the rear of the Mark V cabinet enclosure. The board requires a flat, grounded mounting surface for proper operation. The GE DS200VPBLG1A DS200VPBLG1ACC needs no external power or configuration before use. You should install filler boards in any empty slots for proper airflow. The backplane operates reliably from 0°C to 60°C ambient temperature. You must tighten all slot screws to secure each card firmly. Loose cards will cause intermittent bus errors and system faults. The board contains no user-serviceable components or adjustments.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 273.6 × 214.1 × 59.2 mm |
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