GE V7768-322001
GE V7768-322001
GE V7768-322001
GE V7768-322001
GE V7768-322001

GE V7865-223003 | 6U VME Core 2 Duo SBC – Field Service Notes

  • Model: GE V7865-223003
  • Alt. P/N: 350-9300007865-223003K
  • Product Series: GE Fanuc / Abaco VME SBC Platform
  • Hardware Type: 6U single-slot VME single board computer (SBC)
  • Key Feature: 2eSST VME bus (320MB/s) + Core 2 Duo processing
  • Primary Field Use: System controller & data processor in GE Mark VI/VIe turbine control cabinets
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Part number: V7865-223003
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Description

Hard-Numbers: Technical Specifications

  • Processor: Intel Core 2 Duo T7400 @ 2.16GHz, 4MB L2 Cache
  • Chipset: Intel 945GM + ICH7-M, 667MHz system bus
  • Memory: 1GB onboard DDR2; up to 3GB total (1×SODIMM)
  • Storage: Up to 4GB bootable CompactFlash
  • VME Protocol: ANSI/VITA 1.5-2003 (2eSST), 320MB/s max bandwidth
  • Front I/O: 2×Gigabit Ethernet, 2×USB 2.0, 1×RS-232, SVGA
  • Rear I/O: 2×USB 2.0, 1×RS-422, DVI-D, 2×SATA
  • Expansion: 1×PCI-X PMC slot (3.3V)
  • Operating Temp: 0°C to +55°C (commercial grade)
  • Power Draw: 28W typical @ +5VDC & +12VDC inputs
  • Form Factor: 6U Eurocard, single-slot, passive cooling
  • Compliance: RoHS, VMEbus Rev C.1
GE V7768-322001

GE V7768-322001

The Real-World Problem It Solves

Legacy VME64 CPUs top out at 40MB/s, bottlenecking modern turbine data logging and high-speed I/O. Older boards lack sufficient onboard RAM and struggle with multi-tasking control loops.

Where you’ll typically find it:

  • GE Mark VIe gas/steam turbine control racks (slot 1 system controller)
  • Refinery VME-based safety instrumented systems (SIS)
  • Power plant combined-cycle DCS data acquisition nodes

Bottom line: It drops 8x faster VME bus speed and modern Core 2 Duo power into a single-slot form factor to eliminate processing and bandwidth bottlenecks.

 

Hardware Architecture & Under-the-Hood Logic

This is a slot-1 capable VME SBC with a transparent PCI-to-VME bridge; runs as system controller or peer CPU in multi-CPU setups. No onboard fan—relies on chassis airflow.

  1. Core 2 Duo CPU + 945GM chipset handle real-time control, data processing, and OS tasks.
  2. Tundra Tsi148 bridge chip translates PCI-X traffic to 2eSST VME bus for backplane I/O.
  3. ICH7-M manages front/rear USB, serial, Ethernet, and SATA peripherals.
  4. Onboard 1GB DDR2 + CompactFlash store OS, control logic, and historical data.
  5. Watchdog timer (software-selectable) triggers reset on CPU hang; 4×general-purpose timers for event synchronization.

 

Field Service Pitfalls: What Rookies Get Wrong

Incorrect Backplane TerminationTechs forget to enable slot-1 termination resistors or use VME64-only backplanes. 2eSST signal reflections cause random bus errors and watchdog resets.

  • Field Rule: Use only VITA 1.5-compliant backplanes; enable termination via board switch when in slot 1.

Overlooking Airflow RequirementsRookies install in sealed, unvented cabinets or block heat sinks with cabling. Passive cooling leads to thermal throttling at >55°C and premature failure.

  • Quick Fix: Maintain 30–50CFM airflow across the board; route cables away from heat sinks.

Mismatched PMC I/O ModulesTechs plug 5V PMC cards into the 3.3V-only slot. Backplane voltage fault damages the board and PMC module.

  • Field Rule: Verify PMC module is 3.3V keyed; check slot voltage before insertion.
GE V7768-322001

GE V7768-322001

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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