Motorola CHARM 用户手册

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49
Troubleshooting
• Using accessories not supplied or approved by Motorola may cause your mobile 
device to exceed RF energy exposure guidelines. For a list of Motorola-supplied 
or approved accessories, visit our Web site at: www.motorola.com.
RF Energy Interference/Compatibility
Nearly every electronic device is subject to RF energy interference from external 
sources if inadequately shielded, designed, or otherwise configured for RF energy 
compatibility. In some circumstances, your mobile device may cause interference 
with other devices.
Follow Instructions to Avoid Interference Problems
Turn off your mobile device in any location where posted notices instruct you to do 
so.
In an aircraft, turn off your mobile device whenever instructed to do so by airline 
staff. If your mobile device offers an airplane mode or similar feature, consult airline 
staff about using it in flight.
Implantable Medical Devices
If you have an implantable medical device, such as a pacemaker or defibrillator, 
consult your physician before using this mobile device.
Persons with implantable medical devices should observe the following precautions:
• ALWAYS keep the mobile device more than 20 centimeters (8 inches) from the 
implantable medical device when the mobile device is turned ON.
• DO NOT carry the mobile device in the breast pocket.
• Use the ear opposite the implantable medical device to minimize the potential 
for interference.
• Turn OFF the mobile device immediately if you have any reason to suspect that 
interference is taking place.
Read and follow the directions from the manufacturer of your implantable medical 
device. If you have any questions about using your mobile device with your 
implantable medical device, consult your healthcare provider.
Specific Absorption Rate (IEEE)
SAR (IEEE)
Your model wireless phone meets the governmental 
requirements for exposure to radio waves.
Your mobile device is a radio transmitter and receiver. It is designed and 
manufactured to not exceed limits for exposure to radio frequency (RF) energy set by 
the Federal Communications Commission (FCC) of the U.S. Government and by the 
Canadian regulatory authorities. 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 for the safety of all persons, 
regardless of age or health, and to account for any variations in measurements.
The exposure standard for mobile devices employs a unit of measurement known as 
the Specific Absorption Rate (SAR). The IEEE SAR limit set by the FCC and by the 
Canadian regulatory authorities is 1.6 watts per kilogram (W/kg), averaged over one 
gram of tissue. Tests for SAR are conducted using procedures accepted by the FCC 
and by Industry Canada with the mobile device transmitting at its highest certified 
power level in all tested frequencies. Although the SAR is determined at the highest 
certified power level, the actual SAR level of the mobile device while operating can 
be below the maximum value. This is because the mobile device 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, the lower the 
power output.
Before a mobile device 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) submitted to the 
FCC and available for review by Industry Canada. The highest SAR value for this 
mobile device when tested for use at the ear is 1.43 W/kg, and when worn on the 
body, as described in this guide, is 1.53 W/kg. The SAR value for this mobile device 
in its data transmission mode (body-worn use) is 0.29 W/kg. Body-worn 
measurements can differ, depending upon available accessories and regulatory