3Com 10BASE-2 (BNC Installation Manual

U

NTERMINATED

 E

THERNET

10BASE-2 (BNC)

M

ODULE

 I

NSTALLATION

 G

UIDE

For the LANplex 2500/2016

Module Description

This module contains eight (8) unterminated Ethernet 10BASE-2 ports that 

use BNC connectors. I

f 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).

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. 

Port Status

Unterminated

1

2

3

4

5

6

7

8

Active

Error

Board

Error

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