1
ENGLISH
4. MIC/LINE INPUT POWER SUPPLY
AND TERMINATION RESISTOR
S1 dip-switch no.6 activates the MIC/LINE input power supply (needed for
electret microphones).
DIP 6
0
no MIC/LINE input power supply
1
MIC/LINE input power supply on (+ 24 V dc)
Note: dip-switch no.7 is not used.
Termination resistor for long RS485 lines is set through the dip-switch no. 8.
DIP 8
0
no termination
1
termination (120 Ω)
5. MIC/LINE INPUT
On the remote control front panel, there is an input (3.5 mm jack with a trimmer
for volume control) for a local mono audio source.
Note: when using a stereo audio source (e.g. CD player), it is necessary to
insert a stereo IN / mono OUT adapter jack (not included).
It is also possible to link an external audio input connector to the J2 terminal
(on LI 7903).
J2
1
Audio +
2
Audio –
3
GND