DECconcentrator 900FH

This document serves as a comprehensive guide for the installation, configuration, and maintenance of the DECconcentrator 900FH module. The DECconcentrator 900FH is a 16-port Fiber Distributed Data Interface (FDDI) concentrator that can be integrated into a DEChub 900 MultiSwitch or used as a standalone unit with a DEChub ONE docking station.

Key areas covered include:

• Module Overview: Describes the DECconcentrator 900FH's features, including its hot-swap capability, versatile front-panel connectivity supporting various modular physical media dependent (ModPMD) interfaces (multimode fiber, single-mode fiber, twisted-pair, SC Optics), and different port configurations (M-ports, A/B/S-ports). It also details front and back panel components and their functions.
• Installation: Provides step-by-step instructions for installing the module into a DEChub 900, covering power rating verification, module seating, initial LED operation checks, and connecting various types of port cables.
• Setup Port Configuration: Explains how to connect the module to a setup port device (terminal or PC) using specific cabling and adapters, outlining the signaling standards.
• Module Configuration (DEChub ONE & DEChub 900): Details the menu-driven setup process, including options to restart with factory defaults or current settings, display current settings, configure IP addresses (SNMP read/write community, trap addresses, in-band/out-of-band IP, BootP settings), dump error logs, perform downline firmware upgrades (DLU), and adjust module-specific options like SNMP Port Traps and Quick PC-trace Recovery, and FDDI Port Configuration.
• Module Removal: Instructions for safely removing the module from a DEChub 900 MultiSwitch, including disconnecting cables and unseating the module.
• ModPMD Interface Replacement: Procedures for removing and installing different ModPMD interfaces, which involves disassembling parts of the module like the bezel and circuit board.
• Appendices: Offers valuable supplementary information on troubleshooting using LED descriptions and loopback testing for various connector types, detailed cable descriptions, connector pin assignments, and product specifications (operating environment, physical, and acoustical).

The manual is intended for personnel responsible for installing and configuring the DECconcentrator 900FH module.