MUXserver 90 Hardware Installation Manual

This document is the Hardware Installation Manual for the MUXserver 90 Remote Terminal Server, published in July 1993 by Digital Equipment Corporation.

It describes the MUXserver 90, a DEChub 90 module that functions as a Remote Terminal Server, connecting remote asynchronous devices (like terminals, often via DECmux 300 multiplexers and modems) to an Ethernet Local Area Network (LAN) using a single synchronous link up to 64 kbps.

The manual guides installers through:

• Unpacking the MUXserver 90 and verifying contents.
• Site Preparation and Verification, including environmental, cabling, and power requirements.
• Positioning and Connecting the unit, whether as a stand-alone device (desktop/wall-mounted) or inserted into a DEChub 90 Ethernet backplane.
• Understanding the Power-On Self-Test and interpreting LED indicators.
• Making connections to the console port and the 50-pin device port using various adapter cables.
• Troubleshooting hardware-related issues using diagnostic LEDs and console error messages.
• Completing the installation by recording details on the Network Identification Card.

It also provides detailed appendices on connector pin descriptions and cable structures, ordering information, and specific requirements for UK installations, including safety statements regarding hazardous voltages. The software for the MUXserver 90 is loadable from a host on the LAN.