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Section 1: Introduction- Sample Network Topologies
The simplest network configuration is a single
system controller computer and a CM16a con-
nected by a single Ethernet
crossover
cable. A
standard Ethernet cable would NOT work. The
crossover-type cable must be used when con-
necting the CM16a directly to the system con-
troller computer. This type of cable switches
(or crosses over) the transmit and receive sig-
nals from one end to the other enabling con-
nection without a hub or repeater.
For distances longer than 100 meters (~300
feet) a repeater must be used. An active hub
may be used as well. Active hubs “clean up”
and retransmit the network traffic, much as a
repeater does, only with multiple ports. The
active hub would allow for future expansion.
If there are two or more CM16a’s in
the network (or other network de-
vices present) use a hub to create a
star topology.
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