GE V7768-312000
GE V7768-312000
GE V7768-312000
GE V7768-312000

GE V7768-312000 | 6U VME Single Board Computer – Field Service Notes

  • Model: V7768-312000
  • Alt. P/N: , VMIVME-7768-312000
  • Product Series: GE/Abaco VME Embedded Computing Line
  • Hardware Type: 6U dual-slot VME single board computer (SBC)
  • Key Feature: Intel Core 2 Duo 2.16 GHz CPU + dual GigE + PMC expansion
  • Primary Field Use: Real-time control, data acquisition, and system management in VME-based DCS/SIS systems
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Description

Hard-Numbers: Technical Specifications

  • Processor: Intel Core 2 Duo L7400 @ 2.16 GHz (Celeron M option available)
  • Chipset: Intel 945GME Express + ICH7-M I/O controller
  • Memory: Up to 2 GB DDR2 SDRAM (two SODIMM sockets)
  • Bus Interface: VME64 (VITA 1-1994), 667 MHz front-side bus
  • Ports: 2×Gigabit Ethernet, 2×SATA, 4×USB 2.0, 1×RS-232, SVGA, PS/2
  • Expansion: 1×PMC site (PCI-X capable)
  • Operating Temperature: 0°C to +55°C (commercial); -40°C to +71°C (extended)
  • Power Draw: ~25 W (5 VDC, 4 A typical)
  • Form Factor: 6U VME, dual-slot depth
  • Weight: 0.85 kg (1.87 lbs)
GE V7768-312000

GE V7768-312000

The Real-World Problem It Solves

Legacy VME SBCs lack modern I/O (GigE, USB 2.0) and dual-core performance. Older boards run hot, crash during high-data loads, and can’t handle today’s DCS real-time processing demands.

Where you’ll typically find it:

  • Fossil power plant Mark VI/VIe control system chassis
  • Offshore rig VME-based safety instrumented systems (SIS)
  • Defense and aerospace embedded control racks

Bottom line: It drops into existing 6U VME slots to add dual-core speed, modern I/O, and PMC expansion without chassis redesign.

 

Hardware Architecture & Under-the-Hood Logic

is a dual-slot VME SBC with its own dedicated CPU, memory, and I/O controllers—no shared backplane resources. It acts as either a system controller or peripheral CPU in multi-CPU VME systems.

  1. Front-panel I/O (GigE, USB, SATA) routes through ICH7-M chipset to 945GME Northbridge.
  2. Northbridge connects to Core 2 Duo CPU and DDR2 memory via 667 MHz FSB.
  3. Transparent PCI-to-VME bridge links local PCI bus to VME backplane for master/slave communication.
  4. Onboard firmware handles VME arbitration, interrupt management, and BERR timeout logic.
  5. PMC site taps into PCI bus for add-on I/O cards (e.g., analog/digital I/O, serial hubs).
GE V7768-312000

GE V7768-312000

Field Service Pitfalls: What Rookies Get Wrong

Incorrect Backplane Voltage & Slot ConfigurationNew techs plug it into 3U slots or 5 V-only backplanes. Dual-slot depth causes physical damage; insufficient voltage triggers boot loops and VME bus errors.

  • Field Rule: Use 6U dual-slot VME chassis with 5 VDC @ 4 A minimum; set VME arbiter mode (PRI/SGL/RRS) per system docs.

Overlooking Thermal Ventilation ClearanceRookies stack modules tight, blocking side vents. Poor airflow raises internal temp over 60°C, throttles CPU, and shortens electrolytic cap life.

  • Quick Fix: Maintain 20 mm clearance on both sides; use chassis fans > 30 CFM; avoid direct hot air recirculation.

Mismatched PMC Card Signaling LevelsTechs mix 3.3 V and 5 V PMC cards. Voltage conflicts blow PCI-X buffers, disable PMC slot, and risk backplane voltage spikes.

  • Field Rule: Only use 3.3 V PMC cards; verify keying notch before insertion; never hot-swap PMC modules.

 

Commercial Availability & Pricing Note

Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.

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