Grass Valley Apex v.2.0 - Manual (Page 81)

APEX — Installation and Service Manual 83
Expanded (Multi-Chassis) Systems
Installation
Rack Mounting
The Apex Fiber Extender is mounted in a standard 483 mm (19-inch) rack.
Rear frame support is not required. Position the unit in the rack and secure
the panel in place using rack screws or bolts and nuts (depending on your
equipment rack type). Cooling is provided by an internal fan and vent
opening located on the sides of the unit; these areas must be kept clear of
obstructions.
Special Safety Considerations for Rack Mounting
• Elevated Operating Ambient – If installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment
may be greater than room ambient. Therefore, consideration should be
given to installing the equipment in an environment compatible with
the maximum ambient temperature of 55 degrees C (130 degrees F).
• Reduced Air Flow – Installation of the equipment in a rack should be such
that the amount of air flow required for safe operation of the equipment
is not compromised.
• Mechanical Loading – Mounting of the equipment in the rack should be
such that a hazardous condition is not achieved due to uneven mechan-
ical loading.
• InfiniBand cables – The InfiniBand cables cannot be longer than four
meters (13 feet.)
Power Supplies
Where possible, the two power supply cords should be connected to inde-
pendent power sources. The supplies are auto-sensing from 100 VAC to 240
VAC; power consumption is 30 Watts when fully populated with 16 SFP
transceivers.
Special Safety Considerations for Power Connections
• Circuit Overloading – Consideration should be given to the connection of
equipment in the supply circuit and the effect that overloading of the
circuits might have on over-current protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be
used when addressing this concern.
• Reliable Earthing – Reliable earthing of rack-mounted equipment should
be maintained. Particular attention should be given to supply connec-
tions other than direct connections to the branch circuit (e.g. use of
power strips).