26
EN
Recommended separation distances between portable and mobile RF communications
equipment and the WoundExpress Therapy Device
The WoundExpress Therapy Device is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or user of the WoundExpress Therapy Device can help
prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the WoundExpress Therapy Device 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
√
P
80MHz to 800MHz
d
= 0.35
¥
P
800MHz to 2.5GHz
d
= 0.7
¥
P
0.01
0.12
0.04
0.07
0.1
0.38
0.11
0.22
1
1.2
0.35
0.70
10
3.8
1.11
2.21
100
12
3.50
7.0
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in metres (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 80MHz and 800MHz, 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 re
fl
ection from structures, objects and people.
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