Installation Instructions

Requirements for Installation and Operation
30 (44) © Nokia Corporation Draft DN9913471
Nokia Proprietary and Confidential Issue 3-0 en
3.6.2 Acoustic sound power
The fan unit of the Nokia MetroSite EDGE Base Station generates acoustic noise.
The level of acoustic sound power is dependent on the following factors:
• ambient temperature
• rate of the temperature change
• output power
The acoustic sound power level is higher when the ambient temperature is
changing rapidly. See Figure 5 for the range of acoustic sound power levels at
different ambient temperatures.
Figure 5. Range of acoustic sound power generated by Nokia MetroSite
EDGE Base Station
TAmb
A
coust
i
c soun
d
power
30
35
40
45
50
55
Fan off
-50 -40 -30 -20 -10 0 +10 +20 +30 +40 +50 +60
o
F
+32
+68
+122
+14
-40
-22
-4
+50
+104
+140
+86
o
C
-58
60
dB(A)
5W TRX
25