IRP DWCS2.4, Руководство пользователя

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Seite 19
After pushing the MICRO button the red LED in the button and the red ring on the
microphone light up. If a free audio channel is available the microphone station is locked
to the main unit and starts sending digital encoded audio data. The red LED and the red
ring light continuously. If there is no audio channel avaibalbe, the red LED and the ring
switch off and the green stand-by LED lights up again. The MICRO button (and also the
PRIORITY button in the chairman station) need to be pressed once and the connection
will hold as long as the button is not pressed the second time. After pressing the button
the second time, the connection is terminated and the red LED is switched off.
As long as the microphone station is active, i.e. as long as the microphone is connected
through, the internal loudspeaker of this station is switched off. That is necessary to
avoid feedbacks.
The electronics in the individual station has to fulfill two functions: communication with
the main unit to connect and log-in the station and second the transfer of the audio
signal of the microphone itself. The audio signal will be digitally encoded and transmitted
as 2.4GHz radio signal to the main unit.
Each microphone station has its own integrated loudspeaker. The mixed signal of all
audio channels is (also digitally encoded) transmitted to all microphone stations. Thus
using the dwcs2.4 conference system it is not necessary to use a separate sound
reinforcement system. Further any audio signal (max level of +10dBu) can be fed into
the controller board in the main unit. This way e.g. the sound signal of a media
presentation can be made audible over the microphone stations.
The number of possible microphone stations in one system is almost unlimited (up to
8000).
Chairman Microphone Station
The chairman microphone station enables the activating of the microphone in two ways.
First the chairman station can be used as a regular microphone station: Pressing the
MICRO button anables the connection to the main unit and if an audio channel is
available, the connection is made. If there is no free audio channel, no audio
transmission is possible. The second possibility is to use the PRIORITY button. Pressing
this button, all other microphone stations are muted and the connections cancelled. Only
the chairman microphone station is connected and put through. The audio signal will be
transmitted until the PRIORITY button is pressed the second time and during this time no
other microphone station is able to log-on to the system.
It is possible to use several chairman microphone stations in one system. These stations
are all able to be activated in the PRIORITY mode at the same time.