Description
Motorola MVME712M6E
Technical Specifications
- Power Requirements: +5 Vdc (max 281 mA, typical 255 mA), +12 Vdc, and -12 Vdc, all supplied by the chassis backplane.
- Operating Temperature: 0°C to 55°C at the inlet with approximately 5 CFM forced air cooling.
- Storage Temperature: -40°C to +85°C.
- Relative Humidity: 5% to 90% non-condensing.
- Physical Dimensions (excluding front panel): Height 233.35 mm, Depth 80.0 mm, Thickness 1.6 mm.
Functional Features
- Multi-Protocol Serial: Provides four multi-protocol EIA-232-D serial ports via DB-25 connectors, configurable as DTE or DCE via jumpers.
- Peripheral Interfaces: Features Ethernet (AUI), SCSI, and Centronics parallel printer ports on the front panel.
- Modem Support: Routes EIA-232-D port 2 signals to an internal modem connection.
- Status Indicators: Includes green LED for SCSI terminator power and yellow LED for Ethernet transceiver power.
- Protection: Integrates RFI and ESD protection on the front panel.
Application Scenarios
Widely used in aerospace, defense, industrial automation, and semiconductor manufacturing as the physical connection hub between core VME processors and external networks, storage, and control devices.
Performance Parameters
- Excellent EMI resistance ensuring stable high-frequency SCSI and Ethernet data transmission.
- Continuous stable operation under standard forced-air cooling conditions.
- Internal circuit design includes fuse protection for SCSI terminator power and Ethernet transceiver power.
Material Composition
- Substrate: High-Tg, flame-retardant industrial multi-layer PCB.
- Connectors: Gold-plated VME P2 edge connectors and front-panel I/O ports for low contact resistance.
- Coating: Industrial-grade conformal coating to resist moisture, salt spray, dust, and corrosive gases.
Structural Characteristics
- Standard 6U VME European card form factor.
- Requires a dedicated P2 adapter board (or LCP2 adapter) to route signals from the processor to the transition module via 64-pin and 50-pin connectors.
- Features socketed SCSI terminators for flexible bus topology configuration.
Working Principle
Functions as a highly reliable signal routing platform. It receives high-density pin signals from the processor via the P2 adapter, maps them through precise internal PCB traces with impedance matching, and outputs them to front-panel industrial connectors. It also draws power from the backplane to support onboard Ethernet transceivers, SCSI terminators, and internal modems.
Installation Requirements
- System power must be completely disconnected before installation.
- P2 adapter must be aligned precisely with backplane pin 1.
- Use 50-pin and 64-pin ribbon cables to connect the adapter to the transition module, strictly verifying pin 1 orientation.
- Ensure chassis has compliant forced-air cooling (approx. 5 CFM) with unobstructed airflow.
Usage Precautions
- Strictly observe ESD protocols and use anti-static wrist straps.
- Verify SCSI termination: install terminators if at the end of the bus, remove if in the middle.
- If front-panel LEDs do not illuminate, check for wiring errors, blown fuses on the P2 adapter, or power failures.
- Ensure all internal ribbon cables and external cables are not pinched or excessively bent before closing the chassis cover.
