RECOMMENDED SAFETY DISTANCES BETWEEN PORTABLE AND MOBILE HF
TELECOMMUNIKATION EQUIPMENT AND OCULUS DEVICES
DIN EN 60601-1-2, 6.8.3.201, Table 206
This unit is designed for use in an electromagnetic environment in which HF disturbances have been minimized.
The user of the unit can help to avoid electromagnetic disturbances by ensuring that minimum distances are
maintained between portable and mobile HF telecommunication equipment (i.e. transmitters) and the unit as in the
table below, depending on the output power of the communication equipment.
Safety distance depending on transmitter frequency in m
Nominal capacity of the
transmitter
W
150 kHz to 80 MHz
d= 1,2
√
P
80 MHz to 800 MHz
d= 1,2
√
P
800 MHz to 2,5 GHz
d= 2,3
√
P
0,01 0,12
0,12 0,23
0,1 0,38
0,38
0,73
1 1,2
1,2
2,3
10 3,80
3,80
7,3
100 12
12 23
For transmitters whose maximum nominal capacity is not found in the above table, the recommended safety
distance d in meters (m) can be determined with the equation shown in each column, where P is the maximum
nominal capacity of the transmitter in watts (W) as specified by the manufacturer of the transmitter.
NOTE 1: The higher frequency range applies at 80 MHz and 800 MHz.
NOTE 2: These guidelines may not be applicable in all cases. The propagation of electromagnetic impulses is
affected by the levels of reflection from and absorption by buildings, objects and persons.