DEC FDDIcontroller/EISA

This document provides release notes for four new single-mode fiber (SMF) adapters introduced to the DEC FDDIcontroller/EISA (DEFEA) family. These adapters include the DEFEA-SB (Single Attachment Station, SMF), DEFEA-WB (Dual Attachment Station, SMF with optical bypass relay support), DEFEA-FB (Mixed-media Dual Attachment Station with SMF on A port and MMF on B port), and DEFEA-HB (Mixed-media Dual Attachment Station with MMF on A port and SMF on B port). All adapters utilize duplex SC connectors and feature onboard diagnostics with LED indicators for operating status.

The notes detail SMF connection specifications, including direct connectivity between DEFEA/DEFPA SMF models, a maximum distance of 60 KM, and the need for hybrid connectors when intermixing different connector types (e.g., SC with ST or FC). It also lists vendors for compatible cables and SMF fiber attenuators. The document describes the contents of the distribution diskette, which contains essential files like README.TXT, RELEASE.NOT, OS-specific drivers, EISA configuration files, and diagnostic utilities. Finally, it provides a step-by-step guide for configuring the adapter using the EISA Configuration utility, highlighting the process of selecting the correct configuration file based on the adapter's part number and managing IRQ/memory settings to prevent conflicts.