Dentsply Sirona
Operating Instructions (valid for Canada)
5 Technical information
5.3 Electromagnetic compatibility
66 37 487 D3652
D3652.201.01.21.02 03.2021
27
English
Interference immu-
nity tests
IEC 60601-1-2 Test level
Compliance level
Electromagnetic environment –
guidelines
Conducted RF in-
terference
IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
3 V
eff
d= [1.2] √P
Radiated RF inter-
ference
IEC 61000-4-3
3 V/m
80 MHz to 800 MHz
3 V/m
800 MHz to 2.5 GHz
3 V/m
3 V/m
d= [1.2] √P
at 80 MHz to 800 MHz
d= [2.3] √P
at 800 MHz to 2.5 GHz
where
P
is the nominal transmitter
output in watts (W) specified by the
transmitter manufacturer and
d
is
the recommended working clear-
ance in meters (m).
Field strengths from fixed RF trans-
mitters, as determined by an electro-
magnetic site survey
1
should be less
than the compliance level
2
in each
frequency range.
Interference is possible in the vicinity
of equipment bearing the following
graphic symbol.
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.
1.
Field strengths from fixed transmitters, such as base stations for
radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM/FM radio and TV broadcasts, cannot be predicted
theoretically with accuracy. An investigation of the location is
recommended to determine the electromagnetic environment
resulting from stationary RF transmitters. If the measured field
strength in the location in which the UNIT is used exceeds the
applicable RF compliance level specified above, the UNIT should
be observed to verify normal operation. If unusual performance
characteristics are observed, it may be necessary to take additional
measures such as reorientation or repositioning of the UNIT.
2.
Over the frequency range 150kHz to 80 MHz, field strengths should
be less than 3 V/m.
