GE VMIVME-7750-746001 Single-Slot 6U VMEbus Fanless Single Board Computer (SBC)

GE VMIVME-7750-746001 (alternate part number: 350-027750-746001P) is a customized configuration variant of the classic VMIVME-7750 series originally developed by VMIC, 

later acquired by GE Fanuc and now belonging to Abaco product line. Built on Intel 815E chipset and Pentium III processor architecture, it acts as the master central processor for VME 

rack-based real-time control systems, undertaking real-time logic operation, field I/O data acquisition, VME bus arbitration scheduling, multi-channel network communication,

 local storage management and closed-loop control algorithm execution.

Equipped with a transparent PCI-to-VME bridge circuit, this board can be configured as either VME system master controller or secondary slave CPU to build multi-processor distributed 

rack architecture. It integrates rich native peripheral interfaces and one PMC mezzanine expansion slot for customized function expansion, fully compatible with mainstream embedded 

operating systems including VxWorks, Embedded Linux, QNX and Windows NT Embedded. Widely deployed on GE Speedtronic Mark VI gas/steam turbine control platforms,

 nuclear safety instrumentation systems, aerospace test measurement equipment and military embedded control units, it serves as a critical replacement spare part for overhaul, 

fault troubleshooting and hardware upgrade of legacy VME industrial control systems worldwide.

Technical Specifications

Part Number: VMIVME-7750-746001, Alternate PN: 350-027750-746001P

Manufacturer: GE / VMIC / Abaco Systems, Origin: USA

Form Factor: Single-slot 6U VME Eurocard, Compliant with VMEbus Rev C.1 & VME64x standard

Processor: Intel Pentium III 1.0GHz, 133MHz front-side bus, integrated on-die L2 cache

Chipset: Intel 815E GMCH

System Memory: Max 512MB PC133 SDRAM via single SODIMM socket

Non-Volatile Storage: Flash programmable BIOS, 32KB battery-backed NVSRAM; ATA-100 IDE interface for CF card/HDD storage

Onboard Graphics: AGP SVGA controller with 4MB display cache, VGA video output, max resolution 1600×1200

Network Interfaces: Dual independent 10/100Mbps Fast Ethernet ports with PXE boot ROM support

Serial Ports: Two 16550-compatible RS232 COM ports

Onboard Peripherals: Dual USB ports, PS/2 keyboard & mouse header, RTC real-time clock, onboard buzzer

Expansion Slot: Single 32-bit 33MHz PMC mezzanine card expansion site

VME Bus Mode: Supports A16/A24/A32 addressing, D8/D16/D32, BLT32, MBLT64 high-speed burst data transmission

Timing Functions: Multi-channel programmable timers, software configurable hardware watchdog timer

Power Supply: +5V, +3.3V, ±12VDC powered from VME backplane

Cooling Structure: Fanless passive heatsink cooling design, no rotating fan component

Operating Temperature: Industrial grade 0℃ ~ +55℃; rugged extended version -30℃ ~ +65℃

Ambient Humidity: 5%–95% Non-Condensing

Protection Class: IP20 (Cabinet internal installation only)

PCB Treatment: Optional conformal coating for anti-vibration, moisture and EMI interference resistance

Net Weight: Approx. 1.43kg

Supported Operating Systems: VxWorks, Embedded Linux, QNX, LynxOS, Windows NT Embedded

Key Features

Mature Pentium III high-stability computing architecture, stable real-time response adapting long-cycle continuous running requirements of safety-critical control systems.

Built-in PCI-VME transparent bridge, flexible master/slave mode configuration to construct multi-CPU distributed processing VME rack control architecture.

Dual redundant Ethernet plus multi-serial peripheral layout, convenient for redundant communication connection with HMI, plant DCS and third-party control hosts.

Battery-backed NVSRAM and RTC design, effectively preventing configuration parameters and application program loss caused by grid fluctuation or unexpected power failure.

PMC expansion slot supports flexible integration of fiber communication, high-speed data acquisition, synchronous timing and special protocol interface daughter boards.

Front-panel status LED indicators and manual reset button design, enabling field technicians to rapidly diagnose boot failure, communication dropout and system crash faults.

Fanless passive cooling design reduces mechanical failure points, with excellent shock & vibration resistance adapting harsh electromagnetic environment inside turbine halls and central control rooms.

Pin-to-pin hardware compatibility with all VMIVME-7750 series variants, supporting direct plug-and-play replacement without rack modification during maintenance and retrofit projects.