34
EMC Relevant Information – Continued
Guidance and manufacturer's declaration - electromagnetic immunity
The Intraoral Camera is intended for use in the electromagnetic environment specified below. The
customer or the user of the Intraoral Camera should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the Intraoral Camera, including
cables, than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to
80 MHz
3 Vrms
d
=1.2
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
d
=1.2
80 MHz to 800 MHz
d
=2.3
800 MHz to 2.5 GHz
where
P
is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and
d
is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site
survey,
a
should be less than the compliance
level in each frequency range.
b
Interference may occur in the vicinity of
equipment marked with the following
symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast
cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due
to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field
strength in the location in which the Intraoral Camera is used exceeds the applicable RF
compliance level above, the Intraoral Camera should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as re-orienting or
relocating the Intraoral Camera.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
EJ-CA01UP&EP_mst.book 34 ページ ２０１１年４月５日 火曜日 午前１０時１８分
