Ecler CA40 - Manual (Page 7)

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 MUTE port: The MUTE connector makes it possible to connect a power free
contact to totally silence the CA40 if an external device works on it (example: a
emergencies and centralised evacuation warning system).
 RS-232 port: the serial communication port RS-232 allows remote management of
the CA40 from a computer or external control system supporting this protocol. See
the CA-NET protocol manual for detailed information on the connection and syntax
of the commands supported. The connection has the following specifications:
o Baud rate: 9600 (fixed, without auto negotiation)
o Data bits: 8
o Parity: None
o Stop bits: 1
o Flow control: None
 Receiver IR: the built-in IR receiver gives general volume control of the CA40 and
its MUTE ON / OFF function from the REVO-IR remote control included with the
unit.
4. OPERATION AND USAGE
4.1. Start up and default mode
Start up the CA40 by connecting the equipment to an external power source to which
the DC 24V connector of the CA40 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 CA40. 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 lits 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.
WIRING RS-232 – DB9
RS-232 CA40 DB9
Tx Pin 2 (RxD)
Rx Pin 3 (TxD)
Gnd Pin 5 (Signal Gnd)