User`s manual

EAGLE
Multi-Standard Dual-Channel Digital Audio Codec
25
4.9. Intercom and monitoring.
The EAGLE is equipped with a full-duplex Intercom, which allows communication with both
audio channels, individually and effortlessly, with no external operations or cables. This
facilitates its use in Central Control Rooms that have to prepare communications with
broadcasting studios
The Intercom system lets the technician use one of the two channels (or both at the same time)
to communicate with the remote position through a microphone connected to the front of the unit
(6).
The intercom works by simply pushing the COMM button corresponding to the channel you wish
to speak on.
When one of the two buttons is pushed, the LED associated with it lights up, and monitoring is
simultaneously activated on the same channel, to monitor the return signal. Intercommunication
can take place on channel 1, channel 2 or both at the same time.
To end intercommunication, push the same button (COMM), and the associated LED will go off,
as will monitoring.
The monitoring functions, also available on the front panel, make it possible to listen to all
signals generated and received with the equipment, without affecting the studio’s audio.
Exclusively for use in monitoring the signals existing in the equipment, the EAGLE audio codec
has a headphone output (14) on the front, through which both channels can be monitored,
channel one through the left headphone earpiece and channel 2 through the right. There is a
common level adjustment potentiometer for both channels.
Thus, sending and return on each channel can be jointly monitored with one set of headphones,
in a 50-50 proportion.
If the intercom is active, the microphone signal will be heard through the earpiece corresponding
to the channel being used (or both, if both are being used).
Input has to be configured as ANALOG+DIGITAL. When analog signal is used (XLR
connectors), intercom interrupts audio. When digital signal is used (AES-EBU), intercom
is mixed with digital signal.