Motorola PTP 800, User Manual

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User Guide: PTP 800 Licensed Ethernet Microwave Radiation hazard assessment
phn-1478_005v000
Apr 2010
4-67
Radiation hazard assessment
ETSI method
This section evaluates the radiation levels produced by the PTP 800 products
against the following standards:
x
1999/519/EC of 12 July 1999 on the limitation of exposure of the general
public to electromagnetic fields (0 Hz to 300 GHz).
x
EN 50385:2002 Product standard to demonstrate the compliances of radio
base stations and fixed terminal stations for wireless telecommunication
systems with the basic restrictions or the reference levels related to human
exposure to radio frequency electromagnetic fields (110 MHz to 40 GHz) —
general public.
x
EN 50383:2002 Basic standard for the calculation and measurement of
electromagnetic field strength and SAR related to human exposure from radio
base stations and fixed terminal stations for wireless telecommunication
systems (110 MHz to 40 GHz).
Exposure categories
EN 50385:2002 Clause 3.1 defines the restrictions on exposure to time-varying
electric, magnetic, and electromagnetic fields that are based directly on
established health effects. Between 10 GHz and 40 GHz, the physical quantity is
the power density.
1999/519/EC defines the exposure limit (‘Basic Restriction’) to be considered for
the general public. Annex II and Table 1 define this to be 10 W/m
2
.
Antenna directivity
The Motorola recommended antennas have Hi-Performance polar patterns in
accordance with ETSI EN302 217-4-1 classes 2 and 3. They have gains in excess of
30 dB and beamwidths of less than 5 degrees. Thus, they provide high attenuation
of radiated energy at the sides and rear of the antenna.