Termination
Each network segment require termination for
proper data transmission performance. The type of
termination varies depending on whether Free
topology or Bus topology is used.
In a free topology network segment, only one
termination is required and may be placed anywhere
on the network. The termination resistor should be a
52
Ω
, 1/4W type.
In a bus topology networksegment, two
terminations are required, one at each end of the bus. The termination resistors should each
be a 105
Ω
, 1/4W type.
Termination resistors, which are included with the SYSTEM X keyboard, are easily fitted
using the LON
®
connectors on the SYSTEM X units as shown on the figure.
Repeater
If the maximum numbers of nodes (max. 64) or total cable distance are exceeded, a
repeater can be added to interconnect two or more network segments.
A repeater can also be used to convert from a free topology network to a bus topology
network. This can be useful when e.g. making network connection to remote PTZ cameras.
Information on suppliers of suitable repeaters and converters can be obtained from your
supplier.
Note that only one Repeater should be placed in series between any two nodes in a
segment
.
Bus Topology
Termination
Termination
Free Topology
Termination
3-way
Repeater
Free Topology
Termination
2850-00002
Page 9
S Y S E M
LON
®
cable
Termination
resistor
