Mounting Instructions

Install internal components
Digital audio matrix PC2003-A1
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6.3.16 Backup with an additional digital audio matrix
If all analog audio outputs of PC2003-A1 are used or a one-to-one for 3 or 4
amplifiers are required, an additional digital audio matrix can be used to feed the
backup amplifier.
Fig. 40: PC2003-A1 backup with an additional digital audio matrix
The figure above shows an example with all 4 analog audio outputs are used.
In case of an amplifier fault the additional digital audio matrix routs the analog
audio output signal of the faulty amplifier to the configured backup amplifier. The
PC2003-A1 backup switch routes the 100 V backup input signal to the speaker
lines.
1 to 4 backup amplifiers can be installed. A one-to-one backup can be established
with 4 backup amplifiers.
The 100 V output signal of the backup amplifier can be used to feed a second
PC2003-A1 as a backup input, so 1 to 4 backup amplifiers can used to backup up
to 8 regular amplifiers.
Matrix
PC2003
Control
Logic
Backup
Amplifier 1-4
OUT1
Backup
Input
B1
Amplifier
supervision
and
Backup
switch
1-4
Amplifier 1
OUT1
to
OUT4
Amplifier
Input
A1
B2
B3
Matrix
PC2003
Amplifier 2
Amplifier 3
Amplifier 4
OUT2
OUT3
OUT4
B4
Additional
Matrix
A2
A3
A4