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DVR395/DVR396-002 Page 10 of 30
required if the room is cool (<75°F). For higher rack mounting densities, forced-air rack
ventilation is strongly recommended. Please note the average per-unit power dissipation of 45
watts (@ max LNB DC current loading) and plan accordingly.
Table 1. Equipment Specifications
Parameter Specification
Input Rating 115/230 VAC, 0.8/0.5A, 50/60Hz
Operating Temperature Range 5° - 40° C
Operating Humidity Maximum relative humidity 80% for
temperatures up to 31° C, decreasing linearly
to 50% relative humidity at 40° C.
Maximum Operating Elevation 6560 Ft (2000M) above sea level
1.3.3 Elevated Operating Ambient
If equipment is installed in a closed or multi-unit rack assembly, the operating ambient of the
rack may be greater than the room ambient. Therefore, considerations should be given to the
TMRA, or Temperature inside the Mounting Rack, and not just inside the room.
1.3.4 Reduced Air Flow
Installation of the equipment in a rack should be such that the amount of airflow required for safe
operation of the equipment is not compromised.
1.3.5 Mechanical Loading
Mounting of equipment in a rack should be such that a hazardous condition is not achieved due
to uneven loading
1.3.6 Circuit Overloading
Consideration should be given to connection of the equipment to the supply circuit and the effect
that overloading of circuits could have on overcurrent protection and supply wiring. Appropriate
consideration of equipment nameplate ratings should be used when addressing this concern.
1.3.7 Reliable Earthing
Reliable earthing of rack-mounted equipment should be maintained. Particular attention should
be given to supply connections other than direct connection to the Branch (use of power strips).