CU-ER1 Operator’s Manual _ver 3.00
Recommended separation distances between portable and mobile RF
communications equipment and the Paramedic CU-ER1 – LIFE SUPPORTING
FUNCTIONS
Recommended separation distances between portable and mobile RF
communications equipment and the Paramedic CU-ER1
The
Paramedic CU-ER1
is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the
Paramedic
CU-ER1
can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and
the
Paramedic CU-ER1
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
outside ISM bands
1.16
d
P
=
150 kHz to 80 MHz
in ISM bands
1.2
d
P
=
80 MHz to 800
MHz
1.2
d
P
=
800 MHz to 2,5
GHz
2.3
d
P
=
0.01
0.116 m
0.12 m
0.12 m
0.23 m
0.1
0.37 m
0.38 m
0.38 m
0.73 m
1
1.16 m
1.2 m
1.2 m
2.3 m
10
3.67 m
3.79 m
3.79 m
7.27 m
100
11.6 m
12 m
12 m
23 m
For transmitters rated at a maximum output power not listed above, the recommended
separation distance
d
in metres (m) can be determined 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 The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz
are 6,765 MHz to 6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz;
and 40,66 MHz to 40,70 MHz.
NOTE 3 An additional factor of 10/3 is used in calculating the recommended separation
distance for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and
in the frequency range 80 MHz to 2,5 GHz to decrease the likelihood that
mobile/portable communications equipment could cause interference if it is
inadvertently brought into patient areas.
NOTE 4 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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