2N Lift8 v1.6.0 - Manual (Page 94)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
Description of Terminals, Connectors and Jumpers
Figure: Terminals, Connectors and Jumpers on Fireman Audio Unit Board
Terminals and Connectors
1 Speaker connector 5 2 microphone connectors
2 Audio unit bus 6 Detent button (knob) connector
3 Volume setting (trimmer) 7 Configuration jumper
4 Button connector (Push to talk) 8 Servicing connector
Bus Connection
Remove the audio unit cover and unplug terminal 2 (audio unit bus). Connect the bus
and replace the terminal keeping polarity.
Warning
Connection to different, e.g. higher-voltage, cables leads to damage or
destruction of the audio unit.
Keep polarity while connecting the audio unit to make the audio unit work
properly.