Technical Data
Draco vario
DisplayPort
1.2
108
12.1.14 Balanced Audio Interface
Extender modules with a balanced audio interface support a unidirectional 2-channel mono or 1-channel
stereo transmission in studio quality.
The audio interface is at the same time a 'Line-Level' and 'Mic-Level' interface and is designed to transmit
signals of a microphone or mixing desk for
example with a high tolerance for interferences, even at larger
distances. In addition to that you can connect active speakers at the CON Unit.
Each audio input port contains a 6.35 mm jack socket and can be used symmetrically or asymmetrically.
NOTICE
Microphone connection and/or speaker connection
To connect a microphone to the console, the CPU module with audio input must be installed in the
CON Unit. If a loudspeaker is to be connected to the console, additionally a CON module with audio
output is required.
Phantom Power of a Microphone
Phantom power is used for condenser microphones to operate the internal electronic components. The
provided voltage is 48 V DC. Phantom power can only be activated on the audio input side (CPU module).
The microphone has to be connected to the audio input of the CPU module.
To activate phantom power, the switch on the CPU module has to be pressed and clicked into the pressed
position.
NOTICE
Damage to audio output devices from phantom power
If audio output devices (e.g., loudspeakers) are operated with phantom power, unexpected damage can
occur to the devices.
Use phantom power only for microphones.
Pre-amplification of a Microphone
The balanced audio interface offers the possibility of a pre-amplification of a microphone at the audio input
of the CPU module.
•
The pre-amplification can be activated for each audio channel separately.
•
To activate the pre-amplification, the dip switch (1 for the left and 2 for the right channel) of the
respective audio channel has to be set to the ON position at the CPU module.
•
The default pre-amplification is 10 dB.
•
The pre-amplification can be configured in the
Config.txt
file of the extender module with the
balanced audio CPU module. Therefore, the respective parameter
GAIN
has to be entered into a new
line. The setting can be configured in single steps between 10 and 65 dB, for example:
−
36 dB (enter
GAIN=36
in
Config.txt
file)
−
48 dB (enter
GAIN=48
in
Config.txt
file)
