Storz DUOLITH SD1 R-SW, Operating Manual

Page: 131 / 142

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17 368 02 0320
Technical data, conformity and labelling
Recommended safety distances between portable and
mobile HF communications equipment and the DUOLITH
®
SD1
The DUOLITH
®
SD1 is intended for use in an electromagnetic environment in which radiated HF
disturbances are controlled. The customer or the user of the DUOLITH
®
SD1 can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile HF
communications equipment (transmitters) and the DUOLITH
®
SD1 as recommended below, according to
the maximum output power of the communications equipment.
Rated power
of transmitter
[W]
Safety distance according to frequency of transmitter [m]
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 3.8 3.8 7.3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended safety distance can
be estimated using the equation applicable to the frequency of the transmitter, where P is the rated power
of the transmitter in watts [W] according to the transmitter manufacturer.
NOTE 1
An additional factor of 10/3 was used for calculating the recommended safety distance of transmitters in
the frequency range from 80 MHz to 2.5 GHz in order to reduce the probability that a mobile/portable
communications device brought into the patient area might inadvertently lead to a malfunction.
NOTE 2
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.