3Com 10BASE-2 Switch User Manual
Contents
1. nnn cR 2B ee lt D joe oos seee PELL o e ee Captive screw Unterminated 5 Feed thru 10BASE 2 BNC terminator option module gt The LANplex system will automatically reset when a module has been installed with the power on gt If you physically change the configuration of the system after defining an IP interface the port designated for that interface may no longer be valid You may have to redefine the interface For information on defining an IP inter face see the Administration Console User Guide for your LANplex system Installing the To install the new module into the LANplex system perform the following Module steps 1 Ensure that you are properly grounded 2 Remove the module from its antistatic bag WARNING the system is powered on when you are replacing the module do not insert any metal objects such as a screwdriver or a finger wearing jewelry in the open slot This could cause burns or other bodily harm 3 Place the module between the guides of the selected slot and slide the module into the chassis See the figure below Een ewe R a ee ee lt o o e ER ston for Fon sana ae ojom seee LELLA i ai aih a a ay O Ce EN 0 0 0 0 0 0 0 0 Unterminated 10BASE 2 BNC option module Captive screw 4 To seat the module firmly push the module forward to engage the module A O2. Module Description gt Audience UNTERMINATED ETHERNET 10BASE 2 BNC MODULE INSTALLATION GUIDE For the LANplex 2500 2016 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 0 O3 Q OF Q Q GO Error lt lt lt lt lt lt lt lt JError 1 2 3 4 5 6 tA 8 For a description of how to configure this module into your network see the LANplex documentation set This guide is intended for trained technical personnel only Status LEDs Safe
3. covering the selected installation slot prior to installing the option module CAUTION When handling modules 3Com recommends that you always use a wrist strap connected to a proper ground This helps prevent the module from being damaged by electrostatic discharge Additionally when not in use the module should be stored in an antistatic bag Read if replacing a module To remove the faceplate Loosen the two captive screws securing the faceplate to the chassis Pull the faceplate away from the system POMC CEF ee eee ee lt AB EBS pile QO nO ea A y Captive screw Captive screw Faceplate You can replace a module while the system is powered on Replacing the module requires that you remove the attached cables from the module s ports prior to installing the new module To replace a module Disconnect the cables from the module s ports Loosen the two captive screws securing the module to the chassis Pull the module out of the chassis The following figures show termination of unterminated BNC ports using either a Y connector or a Feed thru terminator es See Se lt Ee Dap DDD DDD DD ae O s EELLLLLL T O 0 e Oz2 Captive screw Y terminator ey BNC terminating plug 9 Unterminated 10BASE 2 BNC option module
4. Clara California without permission from 3Com Corporation 95052 8145 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change 3Com Corporation provides this documentation without warranty of any kind either implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time 3Com and LANplex are registered trademarks of 3Com Corporation 3Com registered trademarks are registered in the United States and may or may not be registered in other countries Other brand and product names may be registered trademarks or trademarks of their respective holders Part No 801 00321 000 Published May 1996 Revision 01
5. ption Module Diagnostics and backplane connectors You will feel a slight resistance as the connectors engage CAUTION f the resistance is too great the module and backplane connec tors may not be aligned Forcing the module forward could damage the board or backplane connectors If necessary remove and reinsert the module ensuring that the connectors are properly aligned You should not have to seat the module by tightening the captive screws Tighten the captive screws to secure the module in the chassis Once the module is installed see Chapter 4 Cabling the System in your Getting Started guide for information on cabling the module to the network Module diagnostics run at power up or when replacing a module with the power on During diagnostics the module s port status Error LEDs are lit yellow When diagnostics are successfully completed the port status Active LEDs turn green for those ports that are cabled If any port status Error LEDs remain yellow the port is not operational If the module s Board Error LED is lit yellow the module has failed a diagnostic test To troubleshoot module failures see Chapter 7 Troubleshooting the System in your Getting Started guide 3Com Corporation 3Com Corporation 1996 All rights reserved No part of this documentation may be reproduced in any form 5400 Bayfront Plaza or by any means or used to make any derivative work such as translation transformation or adaptation Santa
6. ty Information Prior to Installation Read if initial installation A The option module contains one Board Error LED eight port status Active LEDs and eight port status Error LEDs Depending on the condition the port status LED is either Active green or Error yellow See the table below for a description of the status LEDs LED Name Color Description Module Board Error Yellow Indicates that either an error has occurred or the Status option module has failed a diagnostic procedure Port Active Green Indicates that the associated port is active Status Error Yellow Indicates that an error condition has occurred with the associated port or that the port was disabled from the Administration Console Electrostatic discharge ESD can damage components on the module ESD occurs when the module is improperly handled and can cause complete or intermittent failures To prevent ESD related damage Always wear the ESD wrist strap provided with the LANplex system ensuring that it makes good skin contact Keep the module in its antistatic shielded bag until you are ready to install it Do not touch the components pins leads or solder connections Always handle the module by its edges Before you install your new module follow the appropriate pre installation instructions in this section Your LANplex system is shipped with protective faceplates covering the exposed installation slots You must remove the protective faceplate
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