IHSE USA 474 Series Draco vario - Manual (Page 54)

Draco KVM Extender
54
2013-03-12
Connection Format DTE (Data Terminal Equipment)
Speed Up to 19,200 Baud
Data Format Format independent
Data Transmission  RxD (Receive Data)
 TxD (Transmit Data)
Traffic Control The following signals are transmitted
(hardware handshake):

RTS (Request To Send)
 CTS (Clear To Send)
 DTR (Data Terminal Ready)
 DSR (Data Set Ready)
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7.1.9 Analog Audio Interface
The analog audio option supports a bidirectional stereo audio
transmission, in nearly CD quality .
The audio interface is a 'line level' interface and it is designed to transmit
the signals of a sound card (or another 'line level' device) as well as to
allow the connection of active speakers to the CON Unit.
Stereo audio can be transmitted bidirectionally at the same time.
Connection of a microphone:
Connect the microphone to the 'audio' input of the CON Unit. There are
two ways to establish this connection:
 The output of the CPU Unit is connected with the microphone input of
the sound card (red). Adjust the sound card to provide an additional
amplification (20 dB).
 The output of the CPU Unit is connected to the audio input of the
sound card (blue). Choose this connection if the microphone has its
own pre-amplifier.
The CON Unit can do the pre-amplification of the microphone as well.
Open the CON Unit, locate the 'MIC' jumper on the audio board and close
the pins.