Installation option 3: Loudspeakers connected between Isolator Boards
The following figure shows how you can configure the loudspeaker line by connecting one or
more loudspeakers between Isolator Boards:
1
2
3
6
6
6
6
6
5
5
4
4
4
4
3
Figure 4.3: Installation option 3: Loudspeakers connected between Isolator Boards
No. Item
Installation option 3: system requirements
1
Zone output of public
address/voice alarm system
–
100 V constant voltage line (50 Hz – 20 kHz), 500 W
power handling capacity.
2
Master Unit
–
See Connections indicators and controls, page 31.
–
See DIP switch settings, page 41.
3
Loudspeaker loop
–
See Connections indicators and controls, page 31.
4
Isolator Board
–
One or more loudspeakers connected between
Isolator Boards:
–
The tap-off open circuit detection jumper on the
Isolator Boards should be set to OFF.
–
The tap-off short circuit detection jumper on the
Isolator Boards should be set to OFF – see
Configuration, page 41.
5
Loudspeaker
–
Loudspeaker connected to the DC Blocking Board
tap-off connection.
–
According to certain standards, a maximum of 25
loudspeakers can be connected between two Isolator
Boards.
6
DC Blocking Board
–
DC Blocking Board installed in each loudspeaker or
inside an individual housing for each loudspeaker –
see Installation, page 28.
–
If a DC Blocking Board is not installed in the
loudspeaker/housing, a DC blocking capacitor must
be used instead – see Installation, page 28.
The following table shows how the audio is affected in the system if installation option 3 is
chosen:
4.3.3
Loudspeakers Line Isolator System
Planning | en
25
Bosch Security Systems B.V.
Installation and Operation Manual
2014.03 | V1.1 |
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