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9. Annex I – EMC statement and guidelines
Recommended separation distances between portable and mobile RF communications equipment and the Keeler Spectra Iris
The Keeler Spectra Iris is intended for the use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or the user of the Keeler Spectra Iris can help prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the Keeler Spectra Iris 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 80MHz
d = 1.2
√
p
80MHz to 800MHz
d = 1.2
√
p
800MHz to 2.5GHz
d = 2.3
√
p
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.2
1.2
2.3
10
3.7
3.7
7.4
100
12
12
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For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can 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 80MHz and 800MHz, the higher frequency range applies.
Note 2 These guide lines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures,
objects and people.
