84
LATITUDE
®
Communicator Patient Manual
English
Table
4.
Recommended separation distances between portable and mobile RF
communications equipment and the LA
TITUDE Communicator
a b c d e
Rated
maximum
output
power of
transmitter
(W
atts)
Separation distance according to
frequency of transmitter (meters)
150 kHz
to
80 MHz
d =
1.7
√P
80 MHz to
1000 MHz
d =
0.5
√P
380 MHz
to
390 MHz
d = 0.29
√P
430 MHz
to
470 MHz
d = 0.36
√P
800-960
MHz
1.7-1.99
GHz
2.4-2.57
GHz
d = 0.21
√P
1 GHz to
2.7 GHz
d =
1.7
√P
5.1 GHz
to
5.8 GHz
d = 0.63
√P
0.01
0.17
0.050
0.029
0.036
0.021
0.17
0.063
0.1
0.54
0.16
0.092
0.1
1
0.066
0.54
0.20
1
1.7
0.50
0.29
0.36
0.21
1.7
0.63
10
5.4
1.6
0.92
1.1
0.66
5.4
2.0
100
17
5.0
2.9
3.6
2.1
17
6.3
a.
The LA
TITUDE Communicator is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled.
The customer or the user of the LA
TITUDE Communicator
can help prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the LA
TITUDE Communicator as
recommended in
Table 4, according to the maximum output power of the communications equipment.
b.
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 W
atts
(W) according to the transmitter
manufacturer
.
c.
At
80
MHz
and 1
GHz,
the
separation
distance for the highest frequency
range applies.
d.
These guidelines may not apply
in all situations. Electromagnetic
propagation is af
fected by absorption
and reflection from structures,
objects, and people.
e.
The separation distances are
calculated using the following
equation adopted from the 4th edition
draft of
iEC 60601-1-2:
d
= (5/
E
) √
P
where
P
is the maximum
output power of the transmitter in
watts (W) according
to the transmitter
manufacturer
,
d
is the separation
distance in meters (m), and
E
is the
compliance level.
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