Power Density Exposure Limit - Motorola PTP 48600 User Manual

User Guide: PTP 600 Series

Power density exposure limit

Install the radios for the PTP 600 family 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
energy on page
10 W/m 2
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
phn-0896_009v003
Feb 2010
4-10 ) is:
for RF energy in the 2.4-, 5.2-, 5.4-, 5.8- and 5.9 GHz frequency bands.
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
π
2
4
d
Where:
S
P
G
d
.
P G
π
4 .
S
UNDER DEVELOPMENT
PTP 600 general reference information
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
Electromagnetic
2
4-11