4. OPERATION AND USAGE
4.1. Start up and default mode
Start up the CA120HZ by connecting the equipment to an external power source to which the DC
24V connector of the CA120HZ 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.
The system defaults to volume adjustment mode. In this mode, the VOL/MUTE knob on the front
panel acts on the general output volume of the CA120HZ. This controller has a maximum of 64 steps
between the unit's minimum and maximum volume. When turned, it will adjust the volume while the LED
LEVEL light is flashing. When the controller is turned to the left or to the right, this flashes while the
output volume increases or decreases. The light stops flashing when it reaches either end of the scale
and it is no longer possible to increase or decrease the volume of the unit.
Quickly press the VOL/MUTE controller to activate/deactivate the mute function of the unit
(MUTE ON/OFF). The MUTE LED lights when the mute function is activated.
If you adjust the volume using the infrared remote control, the LED LEVEL y MUTE visual
indicators are exactly the same as those seen when adjusting these with the knobs on the front panel.
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