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32.2 Recommended separation
distances between portable and
mobile RF communications
equipment and the SLE4000 &
SLE5000
Recommended separation distances between
portable and mobile RF communications equipment and the SLE4000 & SLE5000
The SLE4000 & SLE5000 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the SLE4000 & SLE5000 can help prevent electromagnetic interference by
maintaining a minimum between portable and mobile RF communications equipment (transmitters) and the SLE4000 &
SLE5000 as recommended 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 in ISM bands 80 MHz to 2.5 GHz
0.01 0.77 0.19
0.1 0.24 0.59
10.77 1.87
10 2.43 5.91
100 7.7 18.7
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres
(m) be determined 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 The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6,765 MHz to 6,795 MHz;
13,553 MHz to 13,587 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70 MHz.
NOTE 3 An additional factor of 1013 has been incorporated into the formulae used in calculating the recommended
separation distance for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency
range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable communications equipment could cause
interference if it is inadvertently brought into patient areas.
NOTE 4 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
obj
ects and people.
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