5
5 - Compressor ON switch (4) to automatically improve and priorize the speaker’s voice
during the talk. The attenuation ATT (5) and trigger THRESHOLD (6) are external and common to
both telephonic lines.
6 - The signal to line SEND (1) and signal to mixer RCV (2) level controls are also external
and common to both telephonic lines.
7 - The listener waiting to be on air can listen to the program or an special signal
AUX IN(19).
8 - The incoming call can be directly switched to on air or hanged down without holding it,
so that the operation of the unit can be faster.
9 - Distance commandment that duplicates in a small box the HOLD and ON AIR switches
and signalling LEDs.
10 - Active electronic circuit to retain the call that also minimizes the loss and avoids the
line transformer saturation.
11 - Telephone line inputs protected against electrical overvoltages.
12 - Galvanically-isolated lines by means of relays and optocouplers.
13 - CALL (8-13) signalling LEDs unaffected by the telephonic marker pulses.
The ATA2-1 has been designed for maximum reliability, resistance and easy operation.
3. INSTALLATION
3.1. Placement and installation
An easy operation of the adapter is the main aim when installing the adapter and the
remote controller is the best solution.
The ATA2-1 does not need cooling because of its low power consumption. However avoid
to place it in a hot environment and be sure that the atmosphere is dry and clean.
The ATA2-1 operates under voltages between 90 and 264 V at 47 to 63 Hz. This
device features an over dimensioned power supply that adapts to the mains voltage in any country of
the world with no need to make any adjustments. Be sure that the mains wire is far enough from the
signal wires to avoid possible hum at the output.
The unit is protected by a slow-blow 500mA fuse (13). Whenever it blows-off, disconnect
the unit and exchange it by another of the same characteristics. If it blows-off again, please contact
our authorised technical service. NEVER USE A FUSE OF HIGHER VALUE.
3.2. Connection of the ATA2-1 to different mixers
1 - Mixers without AUX, SEND and RECEIVE connectors. There is only one way to
connect the adapter to this kind of mixers:
a - Connect the main output of the mixer to the PGM IN (21) of the adapter.
b - The OUTPUT (22) of the adapter substitutes the main output of the mixer.
c - PGM BYPASS (23) switch must be ON.
If the adapter is connected to one of the mixer channels then there will be a coupling of the
signals.
2 - Mixers without AUX but with SEND/RECEIVE connectors.
a - Connect the SEND output of the mixer to the PGM IN (21) of the adapter.
b - Connect the OUTPUT (22) of the adapter to the RCV input of the mixer.
c - PGM BYPASS (23) switch must be ON.
The adapter’s signal cannot be regulated independently from the main output and is not
either possible to talk to the listener trough the telephone line by means of a microphone and
headphones connected to the mixer.
To send a signal to the listener while is waiting an external source (cassette, DAT, CD,..)
connected to the AUX IN (19) of the adapter must be used.
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