this the call station will not be powered from the bus and a local power supply is needed.
A microphone stations should be powered locally in case:
15 or more stations are connected to the bus. All stations after the tenth should be powered by their own mains adapter
The bus cable length is higher than 100 meters. In this case, microphone stations located more than 100 meters away from
the master should be powered by their own mains adapter.
It is advisable to locate the microphone stations configurad as fire alarm call stations the close as possible to the
master unit.
It is not advosable to power externally the microphone stations configured as alarm call stations since these are subject
to a continuous monitoring from the master unit; If powered externally and in case the mains adapter is disconnected,
the master unit will return a fault warning.
Once the system is cabled inside the building, it is necessary to configure all microphone stations and set the bus address, insert
the line termination and set the gain of the microphone. The figures here below describe the configuration process.
Remove the screws pointed by the red arrows.
Mic Gain
Trimmer
Sw1
Sw8
- - - -
Set dip switches according to the table here
below.
Connect the microphone station to the system
and set the microphone gain.
