GE-VMIVME-7750-744000 VME64 Single‑Board Computer

Description

Core technical traits

It adopts Intel Pentium‑III CPU, SODIMM memory slot with max 512MB PC133 SDRAM. On‑board AGP SVGA graphics controller with 4MB video buffer. Front panel brings dual 10/100Mbps Ethernet, dual serial COM ports, VGA, USB and reset button. One PMC mezzanine expansion slot is reserved for extra function cards. CompactFlash IDE interface serves as local solid‑state boot storage. PCI‑VME transparent bridge supports VME system controller or secondary CPU mode. Compatible with VxWorks, QNX, Linux and embedded Windows systems. Power is supplied by VME chassis backplane. Operating environment: 0‑65℃ cabinet inside; storage‑40‑85℃; humidity 5‑95% non‑condensing; IP20 cabinet‑mount only. Compatibility note: Suffix defines hardware assembly options. Replacement needs matching BIOS setting, system image and driver; mismatched firmware will trigger boot failure or bus communication breakdown。

Physical features

Standard 6U VME64 Eurocard form factor. Front panel fitted with ejector extraction latches and multi‑channel status LED indicators, all external I/O connectors are arranged on front edge. Rear P1/P2 golden‑finger connectors handle power input and VME64 bus signal transmission. Rear signal expansion depends on matched transition accessory board. Part‑number VMIVME‑7750‑744000 is marked on housing label and PCB silkscreen. Whole board is conformal‑coated for dust and moisture resistance in industrial cabinet surroundings。

Field application situation

Mainly deployed in hardware‑in‑loop simulation benches, power‑plant turbine auxiliary control and large‑scale industrial real‑time data acquisition racks. It undertakes application program execution, VME‑bus I/O data exchange, local display output and upper host network data uploading. Board hardware damage will cause startup abort, loss of VME master function, network service breakdown and suspension of real‑time application tasks. After replacement, inspect golden‑finger contact condition, restore BIOS boot parameters, write corresponding system image, verify VME‑bus access, network link and each peripheral interface before commissioning.

Handling & installation hints

Power off VME rack before swapping module. Anti‑static protection is mandatory, avoid scratching golden‑finger pins. Ensure cabinet airflow is sufficient. Long‑term high ambient temperature accelerates aging of memory and onboard chips. Backup original system image and BIOS parameters before replacement. On‑site component‑level repair is forbidden; replace complete unit when permanent hardware damage occurs.

Common site fault performances

1. Power‑on cannot boot, fault LED keeps lit: Check VME backplane power supply, re‑seat board, verify BIOS and system image integrity.
2. VME‑bus access failure: Check golden‑finger contamination and oxidation, confirm BIOS system‑controller mode setting.
3. Network / serial ports no response: Exclude external cable faults, judge onboard communication circuit damage.
4. Sporadic crash and auto‑restart: Check cabinet operating temperature; evaluate aging risk of SODIMM memory and flash storage.