Cadence Fetal Monitor User Manual
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A4.4 Recommended Separation Distance
Recommended separation distances between
portable and mobile RF communications equipment and the
Cadence Fetal Monitor
The
Cadence Fetal Monitor
is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the
Cadence Fetal Monitor
can help
prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the
Cadence Fetal Monitor
as
recommended below, according to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter (m)
Rated maximum
output power of
transmitter
(W)
150 kHz to 80 MHz
P
V
d
=
1
5
.
3
80 MHz to 800 MHz
P
E
d
=
1
5
.
3
800 MHz to 2.5 GHz
P
E
d
=
1
7
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.73
1
1.2
1.2
2.3
10
3.7
3.7
7.3
100
12
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.
