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This device is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the
user of this device can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and this device as
recommended below, according to the maximum output power of
the communications equipment.
Maximum output
power rate of
transmitters (w)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters(m) can be estimated using the equation applicable to the frequency of the
transmitter. where p is the maximum output power rating of the transmitter in watts(w) according to the
transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
24
Separation distance according to frequency of transmitter
150 kHz ~ 80 MHz
d = 1.2√P
0.12
0.38
1.2
3.8
12
80 MHz ~ 800 MHz
d = 1.2√P
0.12
0.38
1.2
3.8
12
800 kHz ~ 2.5 GHz
d = 2.3√P
0.23
0.73
2.3
7.3
13
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