Coaxial Cable - Cabletron Systems 100BASE-FX Cabling Manual

Coaxial Cable

The connectors available for coaxial cabling are dependent upon the type of
coaxial cabling in question. Thick coaxial cable may be tapped into without
breaking the continuity of the cable or may be physically cut and re-connected.
Thin coaxial cable cannot support the non-intrusive tap style, and must be split
and connected to a junction device at each point where a connection is to be made.
N-Type
N-Type connectors are used for the termination of thick coaxial cables and also for
the connection of transceivers to the cable. When used to provide a transceiver
tap, the coaxial cable is broken at an Annular Ring and two N-Type connectors are
attached to the resulting bare ends. These N-Type connectors, once in place, are
screwed onto a barrel housing. The barrel housing contains a center channel that
the signals of the cable are passed across, and a pin or cable that contacts this
center channel, providing access to and from the core of the coaxial cable. The pin
that contacts the center channel is connected to the transceiver assembly and
provides the path for Ethernet transmission and reception.
Terminator Barrel
Connector Types
Crimping Sleeve
Threaded Connector
Threaded Connector
Figure 4-9. N-Type Connector and Terminator
Center Pin
Insulator
Center Channel
Insulator
Ethernet Media
1845n09
4-19