61 77 476 D 3495
52
D 3495
.
201.01.02
.
02
08.2007
12
Electromagnetic compatibility
Sirona Dental Systems GmbH
Working clearances
Operating Instructions and Installation
XIOS USB
12.4
Working clearances
Recommended working clearances
between portable and mobile RF
communication devices and the
UNIT
The
UNIT
is intended for operation in an electromagnetic environment, where
radiated RF interference is checked. The customer or the user of the
UNIT
can help prevent electromagnetic interference by duly observing the minimum
distances between portable and/or mobile RF communication devices
(transmitters) and the
UNIT
. These values may vary according to the output
power of the relevant communication device as specified below.
For transmitters whose maximum nominal output is not specified in the above
table, the recommended working clearance
d
in meters (m) can be
determined using the equation in the corresponding column, where
P
is the
maximum nominal output of the transmitter in watts (W) specified by the
transmitter manufacturer.
Remark 1
The higher frequency range applies at 80 MHz and 800 MHz.
Remark 2
These guidelines may not be applicable in all cases. The propagation of
electromagnetic waves is influenced by their absorption and reflection by
buildings, objects and persons.
Rated maximum output
power of transmitter
[W]
Working clearance according to transmission frequency [m]
¾
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
d= [1.2]
√
P
d= [1.2]
√
P
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
