Freestyle Libre User Manual page 70

Recommended separation distances between portable
and mobile RF communications equipment and the
System
The System is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the System can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the System as recommended below, according to the maximum output power of
the communications equipment.
Rated maximum Separation distance according to frequency of transmitter
output power of
transmitter
150 kHz to
W
80 MHz
1.2
=
d
0.01 0.12
0.1 0.38
1 1.2
10 3.8
100 12
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ART38553-101_rev-A_manual.indd 131-132
m
80 MHz to 800 MHz to
800 MHz 2.5 GHz
1.2 2.3
=
= d
d
0.12 0.23
0.38 0.73
1.2 2.3
3.8 7.3
12 23
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.
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