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6
Topology: Star network
Less than 20 monitors in the installation
A
B
C
Twisted pair without shielding (2x 0.75mm²)
60m
60m
30m
Twisted pair without shielding (2x 1mm²)
80m
80m
40m
A
: Maximum cable length between PSU and door station
B:
Maximum cable length between PSU and the last distributor
C:
Maximum cable
length between
distributor and the
last monitor.
B
C
In a star network all devices communicate through distributors. The advantage of such a star topo-
logy is that ‘local’ problems are contained and do not influence the entire network. Star networks
are very adequate for renovating projects where an existing intercom has to be exchanged. A star
network requires more cabling than a serial network.
PSU
Distributor
Distributor
A
Important!
Switch terminating resistance ON on accessories and monitors with this symbol.
