80 GB/IE
Recommended safety distances between portable
and mobile RF telecommunication devices and the
blood pressure monitor SBM 68
The blood pressure monitor SBM 68 is designed for use in
an electromagnetic environment in which RF disturbances
are controlled. The customer or the user of the blood pres-
sure monitor SBM 68 can thus help to prevent electromag-
netic interference by maintaining a minimum distance between
portable and mobile RF telecommunication devices (transmit-
ters) and the blood pressure monitor SBM 68 - depending
on the communication device‘s power output as stated
below.
Rated power of the
transmitter (W)
Safety distance, depending on the trans-
mission frequency (m)
80 MHz to
800 MHz
800 MHz to
2.5 GHz
0.01 0.1167 0.2334
0.1 0.3689 0.7378
1 1.1667 2.3334
10 3.6893 7.3786
100 11.6667 23.3334
For transmitters whose maximum rated output is not stated
in the above table, the recommended safety distance d
may be determined in metres (m)
using the equation applicable to the frequency of the trans-
mitter, whereby P is the maximum rated output of the
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