Recommended Safety Distances - Kröber O2-4.0 Gebrauchsanweisung

Kröber O2-4.0
Appendix

11.1.3 Recommended safety distances

The Kröber O2 4.0 is intended for operation in an electromagnetic environment with controlled HF
interferences. The customer or user of the Kröber O2 4.0can help to avoid electromagnetic interferences by
maintaining minimum distances between the portable and mobile HF communication equipment (transmitters)
and the Kröber O2 4.0, according to the maximum output power of the communication equipment, as
recommended below .
Rated power of transmitter
W
0,01
0,1
1
10
100
For transmitters for which the rated power is not contained in the tale above, the distance can be calculated
using the equation for the corresponding column, whereby P represents the rated power of the transmitter in
Watt (W), specified by the transmitter manufacturer.
NOTE 1 For calculation of the recommended safety distance for transmitters in the frequency range from 80
MHz to 2.5 GHz an additional factor of 10/3 was used, in order to reduce the likelihood that a mobile/portable
communication unit, that has unintentionally been brought near the patient, will trigger an interference.
NOTE 2 These regulations may not apply in all situations. The propagation of electromagnetic waves is
influenced by the absorption and reflection by building, objects and persons.
Table 3: Recommended safety distances
96
Recommended safety distances between portable and
mobile HF communication equipment and the Kröber O2 4.0
Safety distance acc. to transmitting frequency
150 kHz to 80 MHz
d=1.2√P
0,12
0,38
1,2
3,8
12
m
80 MHz to 800 MHz
d=1.2√P
0,12
0,38
1,2
3,8
12
800 MHz to 2.5 GHz
d=2.3√P
0,23
0,73
2,3
7,3
23