Beurer BM 57 Instructions For Use Manual page 133

Table 4
For ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between portable and mobile RF communications equipment and the BM 85
The BM57 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the BM57 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the BM57 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 meters (m) can be determined
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
150 kHz to 80 MHz
d = 1.2
0.12
0.38
1.2
3.8
12
133
(m)
80 MHz to 800 MHz
d = 1.2
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
d = 2.3
0.23
0.73
2.3
7.3
23