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18 I Spengler
R
ecommended separation distances between portable
and mobile RF communications equipment and the
blood pressure monitor
The blood pressure monitor is intended for use in an electro-
magnetic 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 blood pressure monitor as recommended below,
according to the maximum output power of the communica-
tions equipment.
Rated
maximum
output
power of
transmitter
W
150 kHz
to 80 MHz
d = 1.2 √P
Separation distance according to frequency
of transmitter M
800 kHz
to 2.5 GHz
d = 2.3 √P
80 kHz
to 800 MHz
d = 1.2 √P
0.01
0.1
1
10
100
0.12
0,37
1.2
3.7
12
0.23
0.74
2.3
7.4
23
0.12
0.37
1.2
3.7
12
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.
Spengler SAS
ZI La Limoise - Rue Robert Maréchal
36100 ISSOUDUN - FRANCE
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