•
Ambient temperature < 30°C, sound power = 70 dB; sound
pressure = 56 dB
•
Ambient temperature between 30°C and 42°C, sound power = 79
dB; sound pressure = 66 dB
•
Ambient temperature > 42°C, sound power = 83 dB; sound
pressure = 71 dB
NCS 5500 series employs a fan speed control algorithm based
on the environmental temperature to reduce the acoustics noise.
Ambient temperature is measured 6" in front of the system air
intake (cold aisle).
Note
Acoustic Noise
Physical Dimensions
1
Rack Unit
17.4 in (44.19 cm)
Width
21.7 in (55.11 cm)
Depth
1.72 in (4.36 cm)
Height
NCS 5501: 22.8 lbs (10.34 kgs)
NCS 5501 SE: 23.5 lbs (10.66 kgs)
Weight
Table 8: Environmental and Physical Specifications for NCS 55A1
Environmental Ranges
32 to 104°F (0 to 40°C)
Operating Temperature
-40 to 158°F (-40 to 70°C)
Non-operating (storage)
temperature
5 to 95% non-condensing
Humidity
0 to 9842 feet (0 to 3000 meters)
Altitude
NEBS compliant. Less than 78 dB sound power at 27°C
NCS 5500 series employs a fan speed control algorithm based
on the environmental temperature to reduce the acoustics noise.
Ambient temperature is measured 6" in front of the system air
intake (cold aisle).
Note
Acoustic Noise
Physical Dimensions
1
Rack Unit
17.3 in (43.94 cm)
Width
Hardware Installation Guide for Cisco NCS 5500 Series Fixed-Port Routers
60
System Specifications
Environmental and Physical Specifications
