Beurer TL 90 - Manual (Page 66)

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Recommended separation distances between
portable and mobile RF communications equipment and the TL90
The TL90 is intended for use in an electromagnetic environment in which radiated RF disturbances are con-
trolled. The customer or the user of the Medical Daylight can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the TL90 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
150 khz to 80 Mhz
d = 1.2 x P 1/2
80 Mhz to 800 Mhz
d = 1.2 x P 1/2
800 Mhz to 2,5 Ghz
d = 2.3 x P 1/2
0,01 0.12 0.12 0.23
0,1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
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 absorpti-
on and reflection from structures, objects and people.