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59
T able 4
For EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between portable and mobile RF
communications equipment and the arm type blood pressure monitor
The arm type 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 arm type blood pressure monitor can help prevent electroma-
gnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the arm type blood
pressure monitor as recommended below, according to the maximum output
power of the communications equipment.
Rated maximum
output power
of transmitter
W
0,01
0,1
1
10
100
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.
Separation distance according to frequency of transmitter m
150 kHz to 80 MHz
[ ]
3.5
d =
√ P
V
1
/
/
/
/
/
80 MHz to 800 MHz
[ ]
3.5
d =
√ P
E
1
0,12
0,38
1,2
3,8
12
800 MHz to 2,5 GHz
[ ]
7
d =
√ P
E
1
0,23
0,73
2,3
7,3
23
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