Patient Monitor User Manual EMC Information
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B.4 Recommended Separation Distances
Recommended separation distances between
portable and mobile RF communications equipment and iM50 iM60 iM70 iM80 M50 M80
iM50, iM60, iM70, iM80, M50 and M80 are intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The customer or the user of
iM50, iM60, iM70, iM80, M50 and M80 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and iM50, iM60, iM70, iM80, M50 and M80 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)
150 kHz to 80 MHz
P
d
2
.
1
=
80 MHz to 800 MHz
P
d
2
.
1
=
800 MHz to 2.7 GHz
P
d
3
.
2
=
0.01
0.12 0.12 0.23
0.1
0.38 0.38 0.73
1
1.2 1.2 2.3
10
3.8 3.8 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.
