9. Expansion cards
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9. Expansion cards
* NOTE:
to install an expansion card, the unit needs to be opened. Make sure to first turn off
the power of the unit before opening and installing an expansion card!
9.1 eXentro ECU 4x4 card (optional)
Used to expand an ECU unit with 4 audio/alarm zones, auxiliary output and 1 back up amplifier
(optional). Up to two 4x4 cards can be added to a single ECU unit. The auxiliary output can be
linked to any of the 4 outputs. This output will not be monitored, but will be muted during an
eVACuation. As an example: this output can be used to drive a separate speaker system, or a
subwoofer used in addition to the installed emergency loudspeakers.
Technical specifications:
To install a 4x4 card: turn the power off, remove the top cover and the appropriate blind plate at
the back of the ECU unit. Take care during installation of the card: the pin headers on the card and
on the main board are fragile and bend easily – make sure these are all straight before inserting
the card. Fix the card to the main board with 4 screws. Turn ON the power of the ECU (before the
top cover is placed back): a green LED on the 4x4 card will illuminate, (brightly/'high intensity')
which indicates the card is installed correctly; if this LED does not illuminate or illuminates with
low intensity, quickly turn OFF the power > the card is not installed correctly; the side pin header
may not be installed properly. In case the green LED illuminates brightly, but no audio is coming
from the outputs, 1 of the 2 front row headers is not installed correctly. Carefully remove the card
again to ensure all pin headers are still ok, after that re-install the card and ensure the green LED is
illuminated brightly and audio is coming from the outputs, before the top cover is placed back.See
Appendix A & B for amplifier & backup amplifier connections and Appendix J for more information
on the expansion card headers.
9.2 eXentro ECU zone controller card (optional)
The zone controller card allows control of audio inputs 1-4 (only), which can be routed to output
Line Inputs
4x Audio : 0 dB, balanced. Range: -90 to +6 dB
Line Outputs
4x Audio, 1x Auxiliary, 1x Backup amp : 0 dB, balanced. Range: -90 to +6 dB
Amplifier inputs
4x Zone amplifier / 1x Backup amplifier
Loudspeaker A/B outputs
Each output (sum of A+B): 100 V/8 A max, minimum monitored load: 30 Watt @ 100 V
