Dentsply Sirona CEREC AC Notice D'utilisation page 27

Dentsply Sirona
Operating Instructions for the Acquisition Unit
Interference IEC 60601-1-2 Test level
immunity tests
Conducted RF 3 V
interference
150 kHz to 80 MHz
IEC 61000-4-6
Radiated RF 3 V/m
interference 80 MHz to 800 MHz
IEC 61000-4-3
3 V/m
800 MHz to 2.5 GHz
66 37 461 D 3492
D 3492.201.06.27.02 09.2017
Compliance level
3 V
eff
3 V/m
3 V/m
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.
Electromagnetic environment –
guidelines
d= [1.2] √P
eff
d= [1.2] √P
at 80 MHz to 800 MHz
d= [2.3] √P
at 800 MHz to 2.5 MHz
where P is the nominal transmitter
output in watts (W) specified by the
transmitter manufacturer and d is the
recommended working clearance in
meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey
be less than the compliance level
each frequency range.
Interference is possible in the vicinity
of equipment bearing the following
graphic symbol.
5 Technical information
1
should
2
in
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