Feellife Air Angel, User Manual

Page: 28 / 156

• Field strengths from fixed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile radios, amateur radio,
AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment
due to fixed RF transmitters, an electromagnetic site survey should
be considered. If the measured field strength in the location in which
the device is used exceeds the applicable RF compliance level above,
the device should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such
as reorienting or relocating this device.
• Over the frequency range 150 kHz to 80 MHz, field strengths should
be less than 3 V/m.
Recommended separation distances between portable and mobile RF
communications equipment and the device – for device that is not LIFE-
SUPPORTING
Recommended separation distances between portable and mobile RF
communications equipment and the device.
The device is intended for use in an electromagnetic environment
in which radiated RF disturbances are controlled. The customer or
the user of the device can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the device as
recommended below, according to the maximum output power of the
communications equipment.
Rated
maximum
output
power of
transmitter
W
Separation distance according to frequency of transmitter
m.
150 kHz to 80 MHz
d = 1.2
80 MHz to 800
MHz
d = 1.2
800 MHz to 2.5
GHz
d = 2.3
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73