Planning; Loop Audio Matrices; Topologies; Fig. 2: Loop With Loop Isolators At Every Loudspeaker - Siemens PCA2005-A1 Technical Manual

4 Planning

4.1 Loop audio matrices

4.2 Topologies

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The 'Loop isolator (100V)' can be connected to the following audio matrices:
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PC2003-A1, Cerberus PACE, Novigo, 'Digital audio matrix (4/4/16)'
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PC1001-A2, Novigo, 'Voice alarm panel Core 400'
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PC1002-A2, Novigo, 'Voice alarm panel Core 1000'
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PC1001-A3, Cerberus PACE, 'Voice alarm panel Compact 400'
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PC1002-A3, Cerberus PACE, 'Voice alarm panel Compact 1000'
The following topologies are possible with the Loop isolator (100V).
Loop with loop isolators at every loudspeaker
This topology is the most reliable. If a short-circuit occurs on the loop, just one
single loop segment fails. The only loudspeakers to fail are those at the OUT
connection of the loop isolator concerned.

Fig. 2: Loop with loop isolators at every loudspeaker

Loop with loudspeakers at loop isolators and loudspeakers
between the loop isolators
This topology is the most cost-effective. Some loudspeakers are connected
between loop isolators. If a short-circuit occurs on the loop, all the loudspeakers in
the segment concerned fail.
Planning 4
Loop audio matrices
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