18
Recommended separation distances between portable and
mobile RF communications equipment and the device
The Blood pressure monitor is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The
customer or the user of the Blood pressure monitor can help prevent
electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment
(transmitters) and the monitor as recommended below, according to
the maximum output power of the communications equipment.
Rated
max.
output
power of
transmitte
r (W)
Separation distance according to frequency of the
transmitter (m)
150 kHz - 80
MHz
P
d
2
.1
80 MHz - 800
MHz
P
d
2
.1
800 MHz -
2.5 GHz
P
d
3
.
2
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.20
1.20
2.30
10
3.80
3.80
7.30
100
12.00
12.00
23.00
For transmitters rated at a maximum output power not listed above,
the recommended separation distance d in metres (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.
