R
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 |
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Port Status |
Board |
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Active |
Error |
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Error |
1 |
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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.
Status LEDs 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.
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LED |
Name |
Color |
Description |
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Module |
Board Error |
Yellow |
Indicates that either an error has occurred or the |
Status |
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option module has failed a diagnostic procedure |
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Port |
Active |
Green |
Indicates that the associated port is active |
Status |
Error |
Yellow |
Indicates that an error condition has occurred with |
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the associated port or that the port was disabled |
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from the Administration Console |
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Safety Information 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
Prior to Installation Before you install your new module, follow the appropriate pre-installation instructions in this section.
Read if initial Your LANplex system is shipped with protective faceplates covering the installation exposed installation slots. You must remove the protective faceplate
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.
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