9 Electromagnetic compatibility
9.3 Working clearances
Sirona Dental Systems GmbH
Operating Instructions SIROLaser Xtend
72
63 18 351 D3576
D3576.201.01.05.02 11.2018
9.3
Working clearances
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 maintaining
a minimum distance between mobile RF communications equipment
(transmitters) and the UNIT - depending on the maximum output power
of the communication device, as shown below.
Power rating of the transmitter
[W]
Working clearance according to transmission frequency [m]
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
The recommended safety distance
d
in meters (m) can be determined
for transmitters, whose maximum power rating is not specified in the
above table, using the equation that belongs to the corresponding
column, wherein
P
is the maximum power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
REMARK The higher frequency range applies at 80 MHz and 800 MHz.
REMARK These guidelines may not be applicable in all cases.
Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.
