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Recommended separation distances
Recommended separation distances between portable and mobile RF communications equipment and the EQUIPMENT or
SYSTEM – for EQUIPMENT or SYSTEM that are not LIFESUPPORTING
Recommended separation distances between portable and mobile RF communications equipment and the Blood pressure monitor
(SBM 37).
The Blood pressure monitor (SBM 37) 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 (SBM 37) can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Blood pressure
monitor (SBM 37) 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)
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 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.
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