Ecler ATA1-1R - Manual (Page 5)

5
The main features and application possibilities offered are:
 Input for telephone line with output for telephone.
 Waiting loop for holding the line in order to attend calls later on, using the phone or passing them to
the program or ringing off definitely.
 Once a call has been sent to the program it can be ringed off or passed to the waiting loop again.
 The input for the telephone line is protected against voltage peaks.
 The line is galvanically isolated from the rest of the circuit by means of transformers.
 Level control for the signal received from the telephone line and sent to the mixer.
 The speaker's voice return is independent from the line's characteristics, since it is possible to
adjust the line's impedance.
 The listener can hear the mixer's signal through the telephone line.
 The ATA1-1R has been specially designed to obtain maximum reliability, long life time and the
highest adaptability to the technician's needs, achieving, by this means, an absolute comfort of
operation.
3. INSTALLATION
3.1. Placement and mounting
The main consideration that has to be taken when searching a location for the ATA1-1R is the
maximum working comfort for the operator, allowing to realize the connections as easy as possible.
The ATA1-1R has 19" (482.6mm), 1U (44mm) rack mounting ears that allow you to place it in a
standard rack.
The ATA1-1R, being a low consumption unit, does not need any cooling; you should anyway
avoid exposure to extreme temperatures and the operating environment must be as dry and dust free as
possible.
The ATA1-1R 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.
In order to protect the unit from eventual mains overloads, it has a time-lag 0.5A mains protection
fuse (11). Should this fuse ever blow off, disconnect the unit from mains and replace it with an identical
one.
NEVER REPLACE THE FUSE WITH ANOTHER ONE WITH A HIGHER VALUE.
ATTENTION: Changing the fuse must be performed by qualified technical personnel.
4. OPERATION AND USE
4.1. Starting-up
This can be done using the POWER switch (4) and immediately lights up a green tally light which is
integrated in the same switch. Even if the noise produced during the power on of the ATA1-1R is as low as
possible, it is always indicated to turn on the devices following the signal flow, so that the amplifier is the
last to be turned on. For turning off the devices you should proceed in reverse order. Following this order,
signal peaks or transients produced with the power on or power off of the devices will not affect the
following units and will not arrive to the loudspeakers, which could easily come to grief under such
conditions.