4
INSTALLATION
Placement
The ATA1-1 telephone adapter has been designed to be used as a desk or embedded unit
(remove the rubber tips). All the connections are made on the back panel.
Do not expose the ATA1-1 to excessive heat and humidity and make sure that the
atmosphere is dry and dustless.
Mains connection
The unit operates depending on country. See characteristics in the back of the unit. The
mains wire must be far from the signal wires to avoid possible hum. The ATA1-1 is provided with a
500mA slow-blow fuse. Whenever it blows off, disconnect the unit from the mains and replace the
fuse by another of the same characteristics. If it blows off again, please ask our Technical Service.
NEVER REPLACE THE FUSE BY ANOTHER OF HIGHER VALUE.
Connections
The ATA1-1 has an internal mixer (see block diagram) that sends to the audio mixer the
mix between the telephone line signal and the audio mixer itself signal. In this case, the ATA1-1 must
always be switched on even if the telephone line is not used. If the audio mixer has an auxiliary send
to effects (see connection diagram nº1), the internal mixer can be disconnected by switching the
internal switch to the right. In this case, it is not necessary to keep the ATA1-1 always switched on.
Audio connection
-Telephone (“SET”) and telephone line (“LINE”):
They both are connected through ¼” mono jacks.
-Audio mixer:
Connect the signal from the audio mixer to the adapter to the “IN” sockets and the signal
from the adapter to the audio mixer to the “OUT” sockets of the ATA1-1.
The signals from and to the audio mixer can be taken from:
Case 1: “AUX OUT/AUX IN” from the auxiliary bus.
Case 2: “SEND/RECEIVE” from the mix bus (or the main output of the mixer. In this case,
the “OUT” output of the adapter will be the main output). So, the signal send via the
ATA1-1 to the telephone line will be the signal present on the mix bus.
Case 3: “SEND/RECEIVE” of the host microphone. In this case, only the host microphone
will be send to the telephone line but not the music.
OPERATION
Once the adapter is connected, check all the wires and connections and switch on the unit.
Be sure that the mains voltage is correct.
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