2 avoiding hazards, 1 preventing overexposure to rf energy, Avoiding hazards – Motorola PTP 400 Series User Manual

Page 22: Preventing overexposure to rf energy

2 Avoiding

Hazards

2.1 Preventing

Overexposure to RF Energy

Caution

To protect from overexposure to RF energy, install the radios for the 400 family of

wireless solutions so as to provide and maintain the minimum separation distances from all

persons as shown in Table 3.

When the system is operational, avoid standing directly in front of the antenna. Strong RF

fields are present when the transmitter is on. The Outdoor Unit (ODU) must not be deployed

in a location where it is possible for people to stand or walk inadvertently in front of the

antenna.

At these and greater separation distances, the power density from the RF field is below

generally accepted limits for the general population.

Note

These are conservative distances that include compliance margins. In the case of the

reflector, the distance is even more conservative because the equation used models the

reflector as a point source and ignores its physical dimensions.

2.1.1 Calculations for Separation Distances and Power Compliance Margins

Limits and guidelines for RF exposure come from:

• US FCC limits for the general population. See the FCC web site at

and the policies, guidelines, and requirements in Part 1 of Title 47 of the Code of Federal

Regulations, as well as the guidelines and suggestions for evaluating compliance in FCC

OET Bulletin 65.

• Health Canada limits for the general population. See the Health Canada web site at

and Safety Code 6.

• ICNIRP (International Commission on Non-Ionizing Radiation Protection) guidelines for

the general public. See the ICNIRP web site at

and Guidelines for

Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields.