GE VMIVME-7750-740000 Single-Slot 6U VMEbus Single Board Computer (SBC)

GE VMIVME-7750-740000 is a single-slot passively cooled 6U VME single board computer originally developed by VMIC and later integrated into GE product line, 

built around Intel 815E chipset and Pentium III processor architecture. It acts as the primary master controller for VME rack-based real-time control systems, undertaking real-time 

logic computation, field I/O data acquisition, VME bus arbitration, multi-channel network communication, storage management and closed-loop control algorithm execution.

Equipped with a transparent PCI-to-VME bridge chip, this board can be configured as either VME system controller or secondary slave CPU in multi-processor rack architectures. 

It integrates abundant onboard peripheral interfaces, supports PMC mezzanine card expansion for customized function extension, and is compatible with mainstream embedded operating 

systems including Windows NT, VxWorks, Linux and QNX. Widely deployed on GE Mark VI turbine control systems, nuclear power safety control platforms, aerospace test equipment 

and military embedded measurement systems, it serves as a critical replacement spare part for overhaul, troubleshooting and upgrade of legacy VME-based industrial control systems worldwide.

Technical Specifications

Part Number: VMIVME-7750-740000

Manufacturer: GE / VMIC, Origin: USA

Form Factor: Single-slot 6U VME Eurocard, VMEbus Rev C.1 compliant, VME64x supported

Processor: Intel Pentium III 933MHz FC-PGA CPU, 133MHz front-side bus

Chipset: Intel 815E

System Memory: 128MB PC133 SDRAM, expandable up to 512MB via SODIMM socket

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

Graphics: Onboard AGP SVGA controller with 4MB display cache, VGA video output

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

Serial Ports: Two RS232 COM ports

Peripherals: Dual USB ports, PS/2 keyboard & mouse interface, RTC real-time clock

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

VME Bus Mode: Supports A16/A24/A32 addressing, D8/D16/D32/MBLT64/BLT32 data transfer

Timing Functions: 2×16-bit + 2×32-bit programmable timers, software-configurable hardware watchdog timer

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

Cooling Method: Passive heatsink cooling, no fan required

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

Humidity: 5%–95% Non-Condensing

Protection Class: IP20 (Cabinet internal installation)

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

Net Weight: Approx. 1.4kg

Supported OS: VxWorks, Windows NT, Embedded Linux, QNX, LynxOS

Key Features

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

Integrated PCI-VME transparent bridge, flexible configuration as VME master or slave CPU to build multi-board distributed processing racks.

Complete dual Ethernet + multi-serial peripheral design, convenient for redundant communication connection with HMI, DCS and third-party control hosts.

Built-in non-volatile SRAM and battery-backed RTC to prevent configuration and program data loss caused by power fluctuation or power failure.

PMC expansion slot enables flexible addition of fiber communication, high-speed data acquisition, synchronous timing and special protocol interface sub-boards.

Front-panel status LEDs and reset button design for fast on-site diagnosis of boot failure, communication dropout and system crash faults.

Fanless passive cooling structure, low failure rate, excellent shock and vibration resistance adapting harsh electromagnetic environment in turbine halls and control rooms.

Full hardware compatibility with VMIVME-7750 series variants, direct plug-and-play replacement for system maintenance without rack modification.