Optimus MP-120SIP Installation And Operating Instructions Manual page 15

MP-120SIP
SIP Power Amplifier
5. CONNECTIONS
• 0dB audio output connection:
Transformer balanced audio output. It broadcasts the audio received by the unit at 0 dB level. The
volume of this output is not affected by front potentiometer regulation.
OUTPUT 0 dB
• Ground to earth and POE configuration switch.
There should only be a junction between earth and ground throughout the installation. Isolate
ground from earth if ground loop noise is detected.
Switches 1 & 2 to ON earth and ground connected.
Switches 1 & 2 to OFF earth and ground isolated.
The unit allows to power the internal module by POE. Select this option when connecting the unit
to a POE switch.
Switches 3 & 4 to ON POE ON, external power.
Switches 3 & 4 to OFF POE OFF, internal power.
Default setting:
Earth and ground connected, POE OFF.
MP-120SIP Version 1.0 Page 5 of 9