IHSE USA 477 Series Draco compact - Manual (Page 44)

Draco KVM Extender
44
2013-03-11
7.1.2 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.
Transmission Format Digitized virtually CD quality audio
(16 bit, 38.4 KHz)
Signal Level Line-Level (5 Volt Pk-Pk maximum)
Input Impedance 47 KOhm
Connections CPU Unit 2x 3.5 mm stereo jack plug
(audio in & audio out)
Connections CON Unit 2x 3.5 mm stereo jack plug
(audio in & audio out)
Pos: 46 /806-IHSE/Technische Daten/Schnittstellen/474-xx (Digital Audio-Schnittstellen) @ 6\mod_1304585776832_6.doc @ 51309 @ 3 @ 1