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Thermal Management
The Cisco RF Gateway 10 (RFGW-10) Universal Edge Quadrature Amplitude Modulation (UEQAM) is
capable of dissipating 4535W (15,474.06 Btu/hour) of heat load to the facility via forced air cooling.
The forced air cooling flows front to back with 800 cubic feet per minute (CFM) exhaust volume (main
fan tray and power supply fans) at full flow.
The system cooling, which is a multi-speed controlled system, is triggered by the ambient air inlet
temperature readings from the DS-48 line cards. It is important to understand the thermal features of the
unit to physically configure the unit in the rack and to monitor the environment.
Table 4-1
Table 4-1
Cisco RFGW-10 UEQAM Operational Environmental Limits
Operating temperature (nominal)
Operating temperature (short-term)
Operating humidity (nominal) (relative humidity)
Operating humidity (short-term)
Operating altitude
Blank Panels
Blank faceplates and cover panels serve three important functions: they prevent exposure to
Warning
hazardous voltages and currents inside the chassis; they contain electromagnetic interference
(EMI) that might disrupt other equipment; and they direct the flow of cooling air through the
chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are
in place. Statement 1029
Caution
Never operate the Cisco RFGW-10 UEQAM for prolonged periods without a line card or blank panel in
each slot of the chassis. Use of the chassis with open slots degrades the cooling performance of the
chassis and can cause over-temperature conditions on adjacent cards due to air flow bypass. Card slots
can be left open only during card replacement.
OL-16264-04
outlines the operational environmental limits of the system.
C H A P T E R
32 to 104ºF (0 to 40ºC)
23 to 122°F (–5 to 50°C)
10 to 85%
5 to 90%
–200 to 10000 feet (–60 to 3050 m)
Cisco RF Gateway 10 Hardware Installation Guide
4
4-1
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