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EWCIE Technical Manual
8 Audio Line Splitter (ALS)
The Audio Line Splitter allows an amplifier’s 100V line output to be split into four monitored branches.
A single monitored branch can deliver up to 100Watts of audio load.
However, the combined total audio load of the four branches is limited to a maximum of 250Watts.
All four branches of the ALS are associated to the same Emergency Zone, which is determined by the
connected amplifier settings.
Each branch can be configured to have different Paging Zones when a Remote Paging Console is
connected to the system and the ASL is connected over the CAN bus.
A maximum of two ASL’s can be connected to a single Amplifier, with a combined maximum of four per
system when configured using the EvacUwiz and CAN bus communications.
If more than two ASL’s are required per Amplifier then they can not be configured in the EvacUwiz or
connected on the CAN bus.
Figure 8: Audio Line Splitter (Version 3 shown)
8.1 LED indications
The Line Monitor Unit has the following indicators:
Indicator Colour Description
Power Green On steady when power available. Controlled by hardware
Sys. Fault Amber On steady with any fault condition, otherwise Off.
Comms Green
Flashes when the can bus communications between the module and
other EWCIE components is active.
Zone Fault (1 - 4) Amber
On steady when applicable zone speaker line is open.
Flashes when applicable zone speaker line is overloaded / shorted,
otherwise off.
Zone Active (1 – 4) Red
On Steady when applicable zone line is active.
Activity includes Remote paging, Background Music, Emergency
PTT paging and zone in alarm.
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