LA Audio MS1224 - Manual (Page 15)

Page 15
6.0 POWER SUPPLY UNIT
The MS1224 Power Supply unit houses the INPUT and OUTPUT ground lift
switches, DC power supplies and monitoring section. Each Power Supply can
power up to four MS1224 Mic Splitter racks i.e. 48 channels.
6.1
DESCRIPTION OF FRONT PANEL
INPUTS
Ground lift switch and fuse, common to all INPUTs.
OUTPUT A, B and C
Ground lift switches and fuses for OUTPUT A, B and C respectively.
Please note:
Pin 1 on OUTPUT D is normally supplied with ground lifted. See Section D doe
details on grounding OUTPUT D . This should be repeated on all channel boards
that are required to be grounded.
The front panel accessible fuses are connected in series with the Ground Lift
switches and provide over-current protection should voltage potentials occur
between interconnect equipment.
To ensure continued protection always replace the ground lift fuses with a
similar type and rating i.e. 20mm, 1A fast blow.
DC SUPPLIES
The three leds are associated with the Phantom Power (+48V) and Audio (-17V
and +17V) supplies. In normal operation all three should be lit.