Revision C • 10/07
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2-8
2 Installation
POWER SUPPLY
The 48-volt Power Supply (99-1205) requires
2 RU of rack space within the console cabinetry,
typically below and to the left or right of the con-
sole. The supply must be installed such that the
keyed fifteen foot DC supply cable (90-1858-1) is
not under any tension when routed through the
cabinet. It locks into the Primary power connec-
tor on the frame’s rear panel (see drawing below).
A second 99-1205 supply can be installed as a
redundant supply since the console has an inte-
gral power coupler. It plugs into the Redundant
power connector using a second power cable, sup-
plied with the console mainframe.
DC GROUNDING NOTE:
Do not
connect the audio or logic ground wir-
ing to the chassis of the power supply.
AC GROUNDING NOTE:
Do not
defeat the power cord “U” safety
ground in any way. Doing so may cre-
ate a potentially dangerous condition
to the operator.
GROUNDING AND SHIELDING
Connect the broadcast facility’s technical ground
to the
RMXdigital mainframe, using the threaded
insert provided on the rear of the chassis near the
power connectors. Use a 10-32 machine screw and
crimp lug to terminate the facility’s technical
ground wire.
Connect audio cable shields at both the console
and the peripheral ends when all system compo-
nents share a common ground potential and are
using isolated ground AC outlets tied individually
back to the main technical ground.
If isolated ground AC outlets are not available,
connect the cable shield at the console end only.
Shields should be floated (left unconnected) at the
peripheral device end. Ensure the peripheral de-
vices connect to a clean ground through their
power cords, or through separate ground wires to
the facility’s technical ground.
GROUNDING NOTE:
The Power Sup-
ply chassis connects to the AC mains
safety or “U” ground wire.
AUDIO GROUND NOISES:
Buzz
pickup is generally electrostatic—such
as capacitive coupling between an au-
dio line and an AC power line. To avoid
audio ground noises, do not route au-
dio wires in the same wireway as an
AC power line.
99-1205 P
99-1205 P
99-1205 P
99-1205 P
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RMXdigital mainframe detail, rear, left lower
48-Volt Power Supply, rear panel detail
no connection
Threaded insert
for technical
ground wire
connection
Two 90-1858-1 cables ship
with the RMXdigital main-
frame. Use one cable for the
primary 48-volt supply, use
the second one for a
redundant 48-volt supply
.
90-1858-1 Cable
Summary of Contents for RMXDIGITAL
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