DECrepeater 90FL Owner's Manual

This document is the Owner's Manual for the DECrepeater 90FL, a five-port network repeater.

It provides comprehensive information on how to install, operate, and maintain the device. Key aspects covered include:

• Device Description: The DECrepeater 90FL is designed for IEEE 802.3 standard CSMA/CD networks, featuring one ThinWire (10Base2) port and four fiber-optic (10Base-FL) ports, with backward compatibility to FOIRL products.
• Operational Modes: It can function as an unmanaged standalone unit or as a managed unit when installed in a DEChub 90 backplane with a DECbridge 90 series bridge.
• Configuration: Details rules and guidelines for setting up the repeater in various network configurations, including segment length and network constraints for IEEE 802.3 LANs.
• Installation: Provides step-by-step procedures for both standalone (desktop, wall-mount) and DEChub 90 backplane installations.
• Management: Explains how to manage the repeater online using the Maintenance Operations Protocol (MOP) from VMS or ULTRIX systems via a DECbridge 90, covering functions like port status examination, enabling/disabling ports, and resetting the repeater.
• Troubleshooting: Offers guidance for resolving issues in both standalone and backplane installations, utilizing LED indicators and providing common fault causes and corrective actions.
• Specifications: Includes detailed physical dimensions, environmental requirements (operating and shipping), power specifications, and a parts list.