The digital audio matrix board continually monitors the function of the connected power amplifiers. If a power amplifier fails, the backup amplifier assumes its functions.
The digital audio matrix board supports one backup type:
- 1-channel backup
The digital audio matrix board has four separate inputs for the backup amplifier.
1-channel backup
One backup amplifier (1) is a backup for up to four main amplifiers.
For 1-channel backup, the amplifier type PV1001-A1 (Voice alarm panel Compact 400) is used. For more power, PV1002-A1 (Voice alarm panel Compact 1000) is used.
The amplifier on position 'Amp 6' is installed as a backup amplifier.