User Manual PS 278 / Issue 2 © 1996 ASL Intercom, Utrecht, Holland.
6
WARNING
Before you plug in the mains voltage, check if:
The fuse is correct
The voltage is correct
6.0 REAR PANEL CONTROLS & CONNECTORS
15 A & B LINE connectors 18 MAINS INLET
These XLR-3 type connectors are for connecting the IEC Mains connector. For correct wiring and operation
remote-stations, via standard microphone cable. refer to section 4.0.
There are two connectors for channel A and two
connectors for channel B.
Pin assignments :
1. 0 V / ground shield
2. +30 V power wire
3. audio wire
16 AUX INPUT connector
This XLR-3 type aux input is electronically balanced
and accepts audio levels between -18dBu to +22dBu
on line level, and -38dBu to +2dBu on mic level.
Pin assignments :
1. 0 V / ground
2. Signal +
3. Signal -
When mic level is selected, a +30Vdc phantom power
is supplied to pins 2 and 3.
17 FUSE
This fuse protects the PS 278 against severe internal
damage, in case of malfunction in the power section.
To remove the fuse the mains cord must be removed.
It is most important to place the correct fuse in the
holder :
mains voltage fuse
220 - 240 VAC T 315 mA
100 - 120 VAC T 630 mA
Spare fuses will be found in the small packet supplied
with the unit.
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