Soehnle 7730.65.001 Mode D'emploi page 53

Recommended safety clearances between portable and mobile
HF telecommunication devices and scales of type series 7730.65
The type series 7730.65 scale is designated for operations in the electromagnetic environments indicated below.
Customers or users of type 7730.65.xxx scales can help to avoid electro-magnetic interference by complying with the
minimum distance between portable and mobile HF telecommunications devices (transmitters) and the type 7730.65
scales - depending on the output cable of the communications device, as indicated below.
Nominal output
of the transmitter
W
0.01
0.1
1
10
100
For transmitters whose nominal output is not indicated in the above table, the distance can be determined by employing
the equation associated with the relevant column, wherein
per the transmitter manufacturer specifications.
NOTE 1:
In order to calculate the recommended protective distance for transmitters in the frequency range from 80MHz to 2.5
GHz, an additional factor of 10/3 was used to reduce the probability that a mobile/portable communications device
brought into the patient's vicinity causes interference.
NOTE 2:
These guidelines may not apply in all cases. The propagation of electromagnetic phenomena is influenced by the
absorption and reflection of buildings, objects and persons.
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Protective distance as a function of transmission frequency
150 kHz to 80 MHz
d = 1.2  P
0.12
0.38
1.20
3.79
4.0
P
is the nominal output of the transmitter in watts (W) as
m
80 MHz to 800 MHz 800 MHz to 2.5 GHz
d = 0.35  P
0.04
0.11
0.35
1.11
3.50
d = 0.7  P
0.07
0.22
0.70
2.21
7.00
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