Palm 650 - Manual (Page 306)

294 Section 5A: Safety
Getting the Most Out of Your Reception
Keeping Tabs on Signal Strength
The quality of each call you make or receive depends on the signal strength in your area.
Your phone informs you of the current signal strength by displaying a number of bars next to
the signal strength icon. The more bars displayed, the stronger the signal. If you’re inside a
building, being near a window may give you better reception.
Understanding the Power Save Feature
If your phone is unable to find a signal after 15 minutes of searching, a Power Save feature is
automatically activated. If your phone is active, it periodically rechecks service availability;
you can also check it yourself by pressing any key. Anytime the Power Save feature is
activated, a message is displayed on the screen. When a signal is found, your phone returns
to standby mode.
Understanding How Your Phone Operates
Your phone is basically a radio transmitter and receiver. When it’s turned on, it receives
and transmits radiofrequency (RF) signals. When you use your phone, the system handling
your call controls the power level. This power can range from 0.006 watts to 0.2 watts in
digital mode.
Knowing Radiofrequency Safety
The design of your Sprint PCS Vision Phone complies with updated NCRP standards
described below.
In 1991-92, the Institute of Electrical and Electronics Engineers (IEEE) and the American
National Standards Institute (ANSI) joined in updating ANSI’s 1982 standard for safety levels
with respect to human exposure to RF signals. More than 120 scientists, engineers and
physicians from universities, government health agencies and industries developed this
updated standard after reviewing the available body of research. In 1993, the Federal
Communications Commission (FCC) adopted this updated standard in a regulation. In