User guide

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2-8
Hardware Description
Writer:
Chris Seiter
Project:
Hardware Description
Comments:
File Name:
1017A_2.DOC
Last Saved On:
6/26/97 3:05 PM
Port Connections
BNC Port (10BASE2)
This hub has a built-in BNC transceiver for a connection using thin coaxial
cable. The BNC port can link up to 30 hubs on a thin coaxial cable segment.
The thin coaxial cable that links the BNC ports may be extended up to 185
meters and have computers or other Ethernet devices attached to it. When
connecting two hubs via BNC ports, there should be at least 0.5 meters (about
two feet) of coaxial cable between the two BNC ports. If the hub is at the end of
an Ethernet cable, plug and lock a 50-ohm (Ω) terminator to the T-type
connector on the BNC port.
NOTE
: Terminate an open end of any T-type connector that is plugged into a BNC port
with a 50-ohm (
Ω
) terminator. In particular, when a hub using the BNC port connection
is at the end of an Ethernet segment, terminate the open end of the T-type connector
with a 50-ohm (
Ω
) terminator. Also, if the BNC port is not used, plug a T-type
connector to it and terminate both ends with a 50-ohm
(Ω) terminator.
AUI Port (10BASE5)
The AUI trunk port on the back panel can be used to further expand your
network by connection to -
Q
Thin Ethernet cable (10Base2)
Q
Thick Ethernet cable (10Base5)
Q
Fiber-optic Ethernet cable
Attach an appropriate transceiver directly to the AUI port for thin Ethernet or
fiber-optic connection, or to the backbone itself for thick Ethernet connection.
(Connection to thick Ethernet is normally made by running an AUI drop cable
from the hub to a 10Base5 transceiver attached to the trunk line.)
Power Connector
The power connector accepts AC power from 100~240V at 50~60 Hz. The hub
is equipped with a universal full-range power source.