EtherHub 1500 System User’s Guide
BNC Module (10BASE2)
The BNC module has a built-in transceiver with a BNC port for 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 the 50-ohm (Ω) terminators to the T-type connector on the BNC port.
ΦTerminate 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.
Power Socket
The power socket accepts AC power from 100 to 240V (± 10%) at 50 to 60 Hz (± 3Hz). The hub is equipped with a universal full- range power source.
Power Switch
The power switch is located at the right side of the rear panel. It is used to power the unit ON/OFF.