Enterprise Wi-Fi AP Hardware Installation Guide
About This User Guide
11
The applicable ISEDC power density exposure limit for RF energy in unlicensed bands is 0.02619 * (f^
(0.6834)), where f is the lowest frequency of the supported band. For licensed bands, the power density
exposure limit is 0.6455 * (f^ (0.5)), where f is the lowest frequency of the supported band.
Calculation of power density and distance
The following calculation is based on the ANSI IEEE C95.1-1991 method, as that it provides a worst-case
analysis. Details of the assessment to EN50383:2002 can be provided, if required.
Peak power density in the far field of a radio frequency point source is calculated as follows:
P
–
Maximum average transmit power capability of the radio, in W
G
–
total Tx gain as a factor, converted from dB
S
–
power density (W/m²)
d
–
Distance from point source, in cm (Centimeters)
Table 3 Antenna details
AP
Antenna
Gain (For 2.4 GHz in dBi)
Gain (For 5 GHz in dBi)
XV3-8
Omnidirectional
5.1
6.7
XV2-2
Omnidirectional
5.4
6.3
For details on minimum safe distance value, please refer Table 4
Calculated distances and power compliance margins
Table 4 displays power density and minimum safe separation distance from point source for each
frequency band and antenna combination for the USA and Canada. These are conservative distances
that include compliance margins.
Cambium Networks Enterprise Wi-Fi AP adheres to all applicable EIRP limits for transmit power when
operating in MIMO mode. Separation distances and compliance margins include compensation for both
transmitters.
Explanation of terms used in the following tables:
P
–
maximum average transmits power of the radio (Watt)
G
–
total transmit gain as a factor, converted from dB
S
–
power density (W/m²)
d
–
minimum safe separation distance from point source (Centimeters)
2
4
.
d
G
P
S
=
S
G
P
d
.
4
.
=