Sierra Wireless AirLink FXT Series, Руководство пользователя, Страница: 133 / 136

WA_DEV_FEX20_UGD_002 Rev 002 April 26, 2010 133
23. Appendix C: Safety
Recommendations (For Information
Only)
For the efficient and safe operation of your GSM device, please read the following information
carefully.
23.1. RF Safety
23.1.1. General
Your GSM terminal is based on the GSM standard for cellular technology. The GSM standard is
spread all over the world. It covers Europe, Asia and some parts of America and Africa. This is the
most used telecommunication standard.
Your GSM terminal is actually a low power radio transmitter and receiver. It sends out and receives
radio frequency energy. When you use your GSM application, the cellular system which handles your
calls controls both the radio frequency and the power level of your cellular modem.
23.1.2. Exposure to RF Energy
There has been some public concern about possible health effects of using GSM terminals. Although
research on health effects from RF energy has focused on the current RF technology for many years,
scientists have begun research regarding newer radio technologies, such as GSM. After existing
research had been reviewed, and after compliance to all applicable safety standards had been tested,
it has been concluded that the product was fitted for use.
If you are concerned about exposure to RF energy there are things you can do to minimize exposure.
Obviously, limiting the duration of your calls will reduce your exposure to RF energy. In addition, you
can reduce RF exposure by operating your cellular terminal efficiently by following the below
guidelines.
23.1.3. Efficient Terminal Operation
For your GSM terminal to operate at the lowest power level, consistent with satisfactory call quality:
If your terminal has an extendible antenna, extend it fully. Some models allow you to place a call with
the antenna retracted. However your GSM terminal operates more efficiently with the antenna fully
extended.
Do not hold the antenna when the terminal is « IN USE ». Holding the antenna affects call quality and
may cause the modem to operate at a higher power level than needed.
23.1.4. Antenna Care and Replacement
Do not use the GSM terminal with a damaged antenna. If a damaged antenna comes into contact with
the skin, a minor burn may result. Replace a damaged antenna immediately. Consult your manual to