21
a 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 model Fi-P is used exceeds the applicable RF
compliance level above, the model Fi-P should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the model Fi-P.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less
than 3V/m.
Table 4: Recommended separation distances between portable and mobile
RF communications equipment and the model Fi-P
Recommended separation distances between
portable and mobile RF communications equipment and the model
Fi-P
The model Fi-P is intended for use in electromagnetic environment in which
radiated RF disturbances is controlled. The customer or the user of the model
Fi-P can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment
(transmitters) and the model Fi-P 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
150kHz to 80MHz
d=1.2×P1/2
80MHz to 800MHz
d=1.2×P1/2
800MHz to
2,7GHz
d=2.3×P1/2
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
Summary of Contents for 28-780
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