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Compliance with safety standards
Power density exposure limit
Install the radios for the PTP 250 families of PTP wireless solutions so as to provide
and maintain the minimum separation distances from all persons.
The applicable power density exposure limit from the standards (see
to radio frequency energy
5.8 GHz frequency bands.
Calculation of power density
NOTE
Peak power density in the far field of a radio frequency point source is calculated as
follows:
S
Rearranging terms to solve for distance yields:
d
4-24
on page
The following calculation is based on the ANSI IEEE C95.1-1991 method, as
that provides a worst case analysis. Details of the assessment to
EN50383:2002 can be provided, if required.
P
.
G
S
2
4
d
Where:
S
P
G
d
P
.
G
S
4
.
S
2
4-23
) is 10 W/m
for RF energy in the 5.4 GHz and
Is:
power density in W/m
maximum average transmit power
capability of the radio, in W
total Tx gain as a factor, converted
from dB
distance from point source, in m.
Chapter 4 Reference information
Human exposure
2
phn-2182_002v000
May 2011
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