DECrepeater 90T-16 Installation

This document is an installation manual for the DECrepeater 90T-16, a 16-port 10BaseT Ethernet repeater module. It can be installed as a hot-swappable module into a DEChub 900 MultiSwitch or DEChub 90, or used in a non-modular (stackable) configuration.

Key aspects covered include:

• Features: Stackable or DEChub operation, automatic self-test, hot-swappability, and support for network management via IETF Repeater MIB and Digital's extended MIB, with GUI manageability through HUBwatch NMS.
• Physical Description: Detailed explanations of the front panel (16 10BaseT ports, ThinWire connector, various status LEDs for power, ThinWire, module OK, network activity, and port states) and the back panel (mounting tab, 48-pin connector for power/management, grounding bolt, mounting foot).
• Installation & Removal: Step-by-step instructions for seating the module into a DEChub, connecting appropriate straight-through UTP/STP cables, and the process for safely removing the module.
• Troubleshooting: A guide for diagnosing problems using the module's LEDs, outlining symptoms, probable causes, and corrective actions.
• Specifications: Technical details including connector pin assignments (8-pin MJ), a list of compatible cables and accessories, and product specifications such as operating environment (temperature, humidity, altitude), power consumption, physical dimensions, and acoustical data (no acoustic noise).