3Com manual 10BASE-2 BNC, Unterminated Ethernet, Module Installation Guide

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UNTERMINATED ETHERNET

10BASE-2 (BNC)

MODULE INSTALLATION GUIDE

For the LANplex 2500/2016

Module Description This module contains eight (8) unterminated Ethernet 10BASE-2 ports that use BNC connectors. If a port on this module is at the end of a 10BASE-2 (BNC) segment, you must provide an external 50 Ohm terminator.

When the port is at the end of a segment, using a T connector with a terminating plug may cause interference with adjacent ports. 3Com recommends terminating ports with the ITT Pomona Y connector, Model 4896, with a terminating plug on the end, or the ITT Pomona Feed-Thru Terminator, Model 4119-50. When the port is in the middle of a segment, the Y connector may be necessary.

Prior to installing the unterminated 10BASE-2 (BNC) module, LANplex system software revision 7.0.0 or later and LANplex diagnostics software revision 3.0.2 or later must be installed. A system software revision supporting this module is available from the 3com BBS, the Internet FTP site (3Com.ftp.com), or 3Com Forum on Compuserve, or 3Com’s Web site (http://infodeli.3com.com/infodeli/swlib/switch_files.htm).

Unterminated							Port Status
Board							Active
Error							Error
1	2	3	4	5	6	7	8

For a description of how to configure this module into your network, see the LANplex documentation set.

Audience This guide is intended for trained technical personnel only.