Page 10 / Operator's Guide / iMRS
Recommended safe distances between portable / mobile RF telecommunication
devices and the iMRS
The iMRS is intended for operation in an ELECTROMAGNETIC ENVIRONMENT in which RF inter-
ference is controlled. The customer or the user of the iMRS can help here in avoiding electro-
magnetic interference by keeping to the minimum distance between portable/mobile RF tele-
communication devices (transmitters) and the iMRS – dependent on the output power of the
communication device as given below
Nominal rating of the
transmitter W
0,01
0,1
1
10
100
For transmitters whose maximum nominal output is not given in the above table, the recom-
mended safe distance «d» in metres (m) should be determined from the equation associated
with the particular column, where «P» is the maximum nominal output of the transmitter in
watts (W) according to information from the manufacturer.
NOTE 1 The higher frequency range applies at 80 MHz and 800 MHz.
NOTE 2 These guidelines may not apply in all cases. The propagation of electromagnetic quanti-
ties is affected by absorption and reflection from buildings, objects and people.
© Swiss Bionic Solutions Schweiz GmbH / 8834 Schindellegi / 2016
Safe distance (m) dependent on transmitter frequency
150 kHz to 80 MHz
√
d = 1,2
P
0,12
0,38
1,2
3,8
12
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
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