Operation And Usage; Start Up; Auto Standby Function; Led Indicators - Ecler eCAI20HZ Notice D'utilisation

4. OPERATION AND USAGE

4.1. Start up

Start up the eCA120HZ by connecting the equipment to an external power source to which the
DC 24V connector of the eCA120HZ has already been connected. The LED indicator ON/STBY
immediately lights up on the front panel. We recommend you turn on all the devices in the following
order: sound sources, mixer, equalisers, active filters and processors and, finally power amplifiers.
Powering off should be done by following the exact reverse sequence. Following this order, the
introduced noise due to turning on or switching off the devices will not affect those further on in the chain
and will be inaudible.
Once turned on, the front volume control (VOLUME) and the controller connected to the
REMOTE port (if any) may be used to set the output volume of the signal amplified by the unit.

4.2. AUTO STANDBY Function

The AUTO STANDBY function (idle or low consumption mode) means you can install the
eCA120HZ in inaccessible places and leave the device connected to the mains power supply permanently
because when no signal is detected, it automatically goes into standby mode, saving energy.
To enable the AUTO STANDBY mode, the jumper labeled "AUTO STBY" on the front panel has to
be in the ON position. When it is enabled and after 2 minutes or more without any audio signal at the audio
input of the device (or a very weak signal, lower than the activation threshold), the eCA120HZ will
automatically switch into standby mode, lighting up the amber ON/STBY LED located on the front panel of
the device. When a valid audio signal is detected in any of the inputs, the eCA120HZ leaves standby mode
and starts operating normally again and the ON/STBY LED goes green.
When enabling the AUTO STANDBY mode with the front panel jumper (ON position), one of the 2
following assumptions may occur:
a) There is NO audio signal in the inputs. Result: the amplifier immediately goes into AUTO
STANDBY mode
b) There is an audio signal in the inputs. Result: the amplifier stays active

4.3. LED indicators

•
SP: The signal presence or SP LED indicator shows that there is a signal in the amplifier
input. This lights up when the input level reaches the established detection threshold.
•
CLIP: The saturation or CLlP LED indicator comes on when the signal delivered to the
speakers is close to the amplifier's clipping or saturation level. Input signals should be set to
ensure the CLIP (saturation or cut off) indicators never stay on, but that they do so at most to
the beat of the lowest sound frequencies. Otherwise the amplified signal will be distorted with
low quality and low intelligibility.
Note: If the input signal is too high, the CLIP indicator lighting up very frequently over a
short time interval (a few seconds), the amplifier may go into protection mode, being muted to
return to normal operation in a short time
•
ON/STBY: the green light comes on when the equipment is in normal operating mode and it
goes orange when it is in standby or low consumption mode (STANDBY).

4.4. Setup jumpers

•
REMOTE: enables (ON) the remote volume control from a WPm-type wall panel (or another
model of the WPm series) connected to the REMOTE port.
•
AUTO STANDBY: Switch the AUTO STANDBY function on (ON) or off. When the function is
on, the eCA120HZ will automatically go into STANDBY or low consumption mode in the
absence of audio signals in its inputs.
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