Motorola CELLPHONE 用户手册

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页码 70
46
16 SAR data
Specific Absorption Rate Data
This model phone meets the government’s requirements 
for exposure to radio waves.
 
Your wireless phone is a radio transmitter and receiver. It is 
designed and manufactured not to exceed limits for exposure to 
radio frequency (RF) energy set by the U.S. Federal 
Communications Commission for the United States and by 
Health Canada for Canada. These limits are part of 
comprehensive guidelines and establish permitted levels of RF 
energy for the general population. The guidelines are based on 
standards that were developed by independent scientific 
organizations through periodic and thorough evaluation of 
scientific studies. The standards include a substantial safety 
margin designed to assure the safety of all persons, regardless of 
age or health.
The exposure standard for wireless mobile phones employs a unit 
of measurement known as the Specific Absorption Rate, or SAR. 
The SAR limit set by the FCC and by Health Canada is 1.6 W/kg.
1
 
Tests for SAR are conducted using standard operating positions 
accepted by the FCC and by Industry Canada with the phone 
transmitting at its highest certified power level in all tested 
frequency bands. Although the SAR is determined at the highest 
certified power level, the actual SAR level of the phone while 
operating can be well below the maximum value. This is because 
the phone is designed to operate at multiple power levels so as 
to use only the power required to reach the network. In general, 
the closer you are to a wireless base station antenna, the lower 
the power output.
Before a phone model is available for sale to the public in the 
U.S. and Canada, it must be tested and certified to the FCC and 
Industry Canada that it does not exceed the limit established by 
each government for safe exposure. The tests are performed in 
positions and locations (e.g., at the ear and worn on the body) 
reported to the FCC and available for review by Industry Canada.