Abaco Systems / Ramix PMC-498 10baseT to 10base2 Ethernet Converter

The Abaco Systems / Ramix PMC-498 is a PCI Mezzanine Card (PMC) that converts between 10BaseT and 10Base2 Ethernet standards. This IEEE 1386-compliant module bridges legacy 10Base2 coaxial networks with modern 10BaseT twisted-pair infrastructure, making it essential for maintaining connectivity in mixed-generation network environments. The card incorporates 16 monitoring LEDs and dual rotary switches offering 256 configuration combinations for flexible deployment. Read/writeable operation supports both data transfer and dynamic configuration management.

– Technical Specifications

• Form Factor: PCI Mezzanine Card (PMC) / IEEE 1386 standard
• Ethernet Interfaces: 10BaseT and 10Base2
• Configuration Options: Two rotary switches (256 combinations)
• Monitoring Indicators: 16 LEDs
• Data Access Mode: Read/Writeable
• I/O Architecture: Front I/O supported
• Signaling Compatibility: 5V and 3.3V when used with compatible PMC adapters (e.g., Ramix PMC239/F)
• Protocol Support: Asynchronous enabled; Synchronous (1 mode)

– Key Features

• Real-time status monitoring via integrated LED array for immediate fault identification and operational awareness
• Dual rotary switch configuration enables 256 distinct settings, supporting diverse network topologies and address schemes without requiring firmware updates
• Supports both 5V and 3.3V PCI signaling through appropriate host adapter selection
• Front panel I/O connectivity for accessible cabling in space-constrained applications

– Typical Applications

• Network modernization projects requiring transparent bridging between legacy 10Base2 coaxial segments and 10BaseT deployments
• Industrial control systems and embedded network solutions maintaining 10Mbps Ethernet connectivity
• Avionics and defense platforms where backward compatibility with existing coax infrastructure is mandatory

– Compatibility & Integration

The PMC-498 operates within the IEEE 1386 PMC standard and integrates into any PCI-capable host system. Voltage adaptation between 5V and 3.3V signaling environments is achieved through compatible PMC carrier cards, such as the Ramix PMC239/F. The product is currently in Restricted Production Phase (RPP); availability through third-party EOL suppliers is recommended for procurement.