GE VMIVME-7750-834 Single-Slot 6U VMEbus Passive-Cooled Single Board Computer (SBC)

GE VMIVME-7750-834 (alternate part number 350-027750-834D) is a ruggedized variant of the VMIVME-7750 series originally developed by VMIC, later acquired by GE Fanuc 

and now part of Abaco Systems product line. It adopts Intel 815E chipset paired with Pentium III processor architecture, functioning as the primary master CPU for VME rack-based real-time 

control systems. It undertakes real-time logic computation, field I/O data acquisition, VME bus arbitration, multi-channel network communication scheduling, 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 processor for multi-CPU rack architectures. 

It integrates abundant native peripheral interfaces and one PMC mezzanine expansion slot for customized function expansion, compatible with mainstream embedded operating systems including 

VxWorks, Embedded Linux, QNX and Windows NT Embedded. Widely deployed on GE Speedtronic Mark VI turbine control platforms, nuclear power safety instrumentation systems, 

aerospace test measurement equipment and military embedded measurement control units, it acts as a critical replacement spare part for overhaul, troubleshooting and hardware upgrade of legacy 

VME-based industrial control systems worldwide.

Technical Specifications

Part Number: VMIVME-7750-834, Alternate PN: 350-027750-834D

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

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

Processor: Intel Pentium III 850MHz, 133MHz front-side bus, integrated L2 cache

Chipset: Intel 815E GMCH

System Memory: Up to 512MB PC133 SDRAM via single SODIMM socket

Non-Volatile Storage: Reprogrammable Flash BIOS, 32KB battery-backed NVSRAM; ATA-100 IDE interface for HDD/CFast 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

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 data transfer

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

Power Supply: +5V, +3.3V, ±12VDC supplied via VME backplane

Cooling Design: Fanless passive heatsink cooling structure

Operating Temperature: Industrial grade 0℃ ~ +60℃; extended rugged option -30℃ ~ +65℃

Humidity: 5%–95% Non-Condensing

Protection Class: IP20 (Cabinet internal installation)

PCB Treatment: Conformal coating option for anti-vibration, moisture & EMI resistance

Net Weight: Approx. 1.42kg

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

Key Features

Mature Pentium III high-reliability computing architecture, stable real-time response matching long-cycle continuous operation requirements of safety-critical control systems.

Built-in PCI-VME transparent bridge, flexible master/slave configuration to construct distributed multi-processor 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 to prevent configuration parameters and program loss caused by power 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 structure lowers component failure rate, with excellent shock & vibration resistance adapting harsh electromagnetic environment inside turbine halls and control rooms.

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