User Manual BS 181 / Issue 1 © 1998 ASL Intercom, Utrecht, Holland.
5
5.0
FRONT PANEL CONTROLS & CONNECTOR
1
POWER ON/OFF switch
Mains power push button for switching ON and OFF
the power supply.
2
POWER LED
This LED illuminates if line power is supplied by the
internal power supply.
6.0
REAR PANEL CONTROLS & CONNECTORS
3
Line connectors
These XLR-3 type connectors are for connecting the
user-stations, via standard microphone cable.
Pin assignments:
1. 0 V / ground shield
2. +30 V power wire
3. audio wire
4
FUSE
This fuse protects the BS 181 against severe internal
damage, in case of malfunction in the power section.
Disconnected the power cord before replacing the
fuse.
It is most important to place the correct fuse in the
holder :
90 - 240 VAC T 1250 mA
Spare fuses will be found in the small packet supplied
with the unit.
An extra internal fuse is located on the printed circuit
board, if neccesary replace this fuse ONLY with a 4A.
5
MAINS INLET
IEC Mains connector. For correct wiring and operation
refer to section 4.0.
Summary of Contents for BS 181
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