The Empi Phoenix is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Empi Phoenix can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment (transmitters) and the Empi Phoenix as
recommended below, according to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter
W
0.01
0.1
1
10
100
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
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 modified by absorption and
reflection from structures, objects and people.
Phoenix User's Manual
RECOMMENDED SEPARATION DISTANCES BETWEEN
PORTABLE AND MOBILE RF COMMUNICATIONS EQUIPMENT
AND THE EMPI PHOENIX
Separation distances according to frequency of the transmitter
From 150 kHz to
80 MHz
= 1.2 √
d
P
0.12
0.38
1.20
3.79
12.00
m
From 80 MHz to
800 MHz
= 1.2 √
d
P
0.12
0.38
1.20
3.79
12.00
is the maximum output power
P
From 800 MHz to
2.5 GHz
= 2.3 √
d
P
0.23
0.73
2.30
7.27
23.00
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