Specifications
EtherHub-16 Quick Start Guide
4
Daisy-Chain Port
A compatible hub or other network interconnection device (e.g., an Ethernet switch) can be
attached to the daisy-chain port (Port 16MDI). Use straight-through twisted-pair cable (STP or
UTP) to connect to a standard MDI-X port on the target device. Up to 4 hubs can be cascaded in
this manner. To connect to another hub, you may also run twisted-pair cabling from an MDI-X
port on this hub to an MDI daisy-chain port on another hub. However, if you must connect to
another hub via standard MDI-X ports at both ends of the cable, use crossover cabling.
Note: When Port 16MDI is used, Port 16MDI-X cannot be used.
BNC Port (10BASE2)
This hub has a built-in BNC transceiver on the rear panel for connection using thin coaxial cable.
A BNC port can be connected to a thin coaxial cable segment containing up to 30 nodes (i.e.,
T-type connections). The thin coaxial cable that links the BNC ports may be extended up to 185
meters (607 feet) 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 (1.64 feet) of coaxial cable between
the two BNC ports. If the hub is at the end of an Ethernet cable, attach a 50-ohm (Ω) terminator
to the open end of the T-type connector on the BNC port.
F
Close off the open end of any T-type connector that is plugged into a BNC port with a 50-Ω
terminator. In particular, when a hub using the BNC port connection is at the end of an
Ethernet segment, close off the open end of the T-type connector with a 50Ω terminator.
Also, if the BNC port is not used, plug a T-type connector into it and close off both ends with
a 50Ω terminator.
AUI Port
This hub has a built-in AUI transceiver on the rear panel for connection using thick Ethernet
cable (10BASE5) or fiber optic Ethernet cable (10BASE-F). An AUI port can be connected to
thick Ethernet by running an AUI drop cable from the hub to a 10BASE5 transceiver attached to
the trunk line. A thick Ethernet segment can be extended up to 500 meters (1640 feet) and
contain up to 100 nodes (i.e., 10BASE-5 connections). For fiber optic connection, attach a
transceiver directly to the AUI port, and run a point-to-point link up to 2 kilometers (1.24 miles).