37
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects
and people.
a Field strengths from fixed RF 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 device
is used exceeds the applicable RF compliance level above, device should
be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or
relocating device.
b Over the frequency range 0.15 MHz to 80 MHz, field strengths should be
less than 3 V/m.
Recommended separation distances between
portable and mobile RF communications equipment and device
The device is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of device can
help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters)
and 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
0,15 MHz to 80 MHz
80 MHz to 800 MHz 800 MHz to 2,7 GHz
0,01
0,12
0,12
0,23
0,1
0,38
0,38
0,73
1
1,2
1,2
2,3
10
3,8
3,8
7,3
100
12
12
23
ENGLISH
