HP 7500 Series - Environmental Specifications; Noise

101
80%. Thermal output/hour of the switch is 0.9 × (total power consumption of the cards plus power
consumption of the fan assembly)/0.8 × 3.4121.
NOTE:
• For the power consumption of the cards and fan assemblies of the 7500 Switch Series, see "Module
po
wer consumption and total power consumption."
• Thermal output is measured in the unit of BTU/h. 1 W = 3.4121BTU/h.
Environmental specifications
Table 41 Environmental specifications for the 7500 Switch Series
Descri
p
tion O
p
eratin
g
Nono
p
eratin
g
Temperature 0°C to 45°C (32°F to 113°F) –40°C to +70°C (–40°F to +158°F)
Relative humidity 10% to 95% (non-condensing) 5% to 95% (non-condensing)
Noise
The 7500 Switch Series adopts different types of fan assemblies. The 7503-S adopts fans with a fixed
speed (the fan speed does not change with the thermal output), so the sound pressure level of the switch
is fixed. The other models adopt fans with the automatic speed adjustment function, so the sound
pressure levels are different when the fan speeds are different. For more information, see Table 42.
Table 42 7
500 sound pressure levels
Model
Sound pressure level when
the fan assembly operates
at low s
p
eed
Sound pressure level when
the fan assembly operates
at middle s
p
eed
Sound pressure level
when the fan assembly
o
p
erates at full s
p
eed
7502 49.8 dBA 51.6 dBA 56.7 dBA
7503-S N/A N/A 56.7 dBA
7503 51.6 dBA 54.6 dBA 56.1 dBA
7506 53.6 dBA 56.2 dBA 57.7 dBA
7510 53.5 dBA 55.8 dBA 56.7 dBA
7506-V 52.1 dBA 55.1 dBA 56.2 dBA