User's Guide

148
Connectors
USB connector
USB connector
Intercom headset connector
Audio 1+2 input connectors
Pin Description
1+ 5 VDC
2 Data -
3 Data +
4GND
USB type A
host connector
(panel view)
USB type A connector (host) compatible
with USB 2.0 standard
41
Pin Description
1 Microphone return
2Microphone
3 Telephone return
4 Telephone left
5 Telephone right
XLR 5-pin female
connector
(panel view)
Microphone level: -64 dBu/-24 dBu
(switchable)
Microphone impedance > 600 Ω
Output level: +6 dBu nominal
Output impedance: < 50 Ω
2
3
1
4
5
Pin Description
1 Audio shield
2Audio In (+)
1)
3 Audio Return (-)
XLR 3-pin female
connector
(panel view)
3
1
2
Microphone impedance > 200 Ω
Phantom power +48 V switchable
Sensitivity range:
Mic: from -22 dBu to -64 dBu
Line: +4 dBu to -10 dBu
1)
Signal at pin 2 of audio input is in phase with signal at pin 2 of audio output.