140°F (60°C)—at room temperatures of 95 to 102°F (35 to 39°C)
158°F (70°C)—maximum exhaust temperature on a fully loaded system during worst-case operating conditions (50°C and 6000 ft altitude
Note Air temperature rise is 68°F (20°C) on a fully loaded system with fans running at maximum speed (5150 RPM).
1000 ft/min (5.1m/s) at 3500 rpm
2250 ft/min(11.4m/s) at 7500 rpm
Note Software controls the speed of the fans based on measurements from the chassis thermal sensors.
Sound power level
(AC and DC power)
Fan speed 3500 RPM, temperature 80°F (27°C):
77.2 dB—modular configuration power
Fan speed 5150 RPM, temperature 104°F (40°C):
88.8 dB—modular configuration power
Shock and vibration
Designed and tested to meet the NEBS shock and vibration standards defined in GR-63 Issue 3 March 2006.
1.Short-term refers to a period of not more than 96 consecutive hours and a total of not more than 15 days in 1 year. This refers to a total of 360 hours in any given year, but no more than 15 occurrences during that 1-year period.
2.Heat dissipation from the modular configuration DC power system based on maximum output power capacity at 90% efficiency.
3.Heat dissipation from the modular configuration AC power system based on maximum output power capacity at 92% efficiency.
Regulatory, Compliance, and Safety Specifications
For information about the regulatory, compliance, and safety standards to which the Cisco CRS Series system conforms, see
Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System