Beurer IH 21 Instructions For Use Manual page 76

Recommended separation distances between portable and mobile RF communications equipment
and the [IH 21/1]
The [IH 21/1] is intended for use in an electromagnetic environment in which radiated RF disturbances are con-
trolled. The customer or the user of the [IH 21/1] can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the [IH
21/1] 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 absorp-
tion and reflection from structures, objects and people.
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
0.12
0.37
1.2
3.8
12
m
80 MHz to 800 MHz
0.12
0.38
1.2
3.8
12
76
800 MHz to 2.5 GHz
0.23
0.73
2.3
7.3
23