Glossary
24
THICK ETHERNET -
see 10BASE5.
THIN ETHERNET -
see 10BASE2.
LINK SEGMENT -
The link segment of coaxial cable is a segment which has no
MAU devices but links two Local Area Network (LAN) devices together such as
repeaters.
MAU -
Media Attachment Unit or transceiver, provides an electrical attachment
to a 10BASE2 or 10BASE5 coaxial cable segment. The MAU will convert the IEEE
802.3 composite signal into separate signals for Data In (circuit A and B), Data Out
(circuit A and B), Control In (circuit A and B), Control Out (circuit A and B),
Voltage Plus and Voltage Common.
N SERIES -
A barrel shaped, threaded connector used on 10BASE5 (thick
Ethernet) coaxial cable.
PROPAGATION DELAY -
The time it takes a signal to travel from the input
of a system component to the output. Usually measured in nanoseconds. IEEE
802.3 has specific propagation delay maximums for computing propagation
budgets when designing a LAN. Cable length plays a major role in propagation
delay. (i.e, a 50 meter AUI cable has a maximum allowable propagation delay of
257 ns.) The propagation delay of cable is dependent on length and velocity factor
of the cable type. There are also propagation delays associated with electronics
attached to the system.
