2019
Cervis, Inc.
17
Appendix A: Exposure to Radio Frequency Energy
Warrior transmitter units contain radio transceivers. When active, a transmitter sends out radio
frequency (RF) energy through its internal antenna. The Warrior transmitter complies with limits
set by the United States Federal Communications Commission (FCC) for operating distance
from human tissue
.
Appendix B: RF Exposure Considerations
The radio module may be used in a variety of host applications that fall into two general
categories:
1. Mobile applications: Those where any operating locations are
not
on a human
body. In mobile applications, the host application is typically fixed to mobile
equipment, with either an internal or an external antenna.
2. Portable applications: Those where the transmitting equipment
is
located on the
hand, arm, or other part of the human body. In portable applications, the
equipment is typically held in the hand of an operator or affixed to the torso on
either a belt or harness.
Equipment containing the radio module was evaluated for RF exposure hazards by two
approaches:
1. Maximum Permissible Exposure (MPE) for mobile applications.
2. Specific Absorption Rate (SAR) for portable applications.
Required separation distances are measured from the actual location of the radiated part of the
antenna. An antenna may be inside the host application, affixed to the enclosure of the host
application, or at the end of an optional extension coaxial cable.
Mobile Applications
Equipment must be located at least 20cm away from areas likely to be occupied by an unaware
person.
Handheld Applications
All operators of handheld equipment with any type of antenna require proper equipment
operation training, and such training must include RF exposure safety instructions. Once training
is completed, they are considered
“aware persons.”
If the portable operating pose is on the hand or arm, a 5mm separation is required between the
radiating part of the antenna and nearby human tissue.
Required Training
All installers and operators of host applications that include an SRF310 radio transceiver module
must
be trained to use proper RF safety precautions.
