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This unit is intended for use in the electromagnetic environment specified below.
The customer or the user of this unit should assure that it is used in such an environment.
It does not harm users and patients within the electromagnetic environment shown below.
However, it is possible to affect the medical equipment (LED abnormality and output stop etc.).
If you suspect any abnormality with the equipment, please suspend use and inspect it.
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz
to 80 MHz
6 Vrms
ISM and
amateur
radio bands
between
150 kHz
to 80 MHz
10 V/m
80 MHz
to 2.7 GHz
IEC 60601
-1-2: 2014
Table 9
3 Vrms
6 Vrms
10 V/m
IEC 60601-1-2
test level
compliance
level
Electromagnetic environment – guidance
Immunity test
Portable and mobile RF communications
equipment should be used no closer to any part
of this unit. including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Recommended separation distance
Conducted RF d = 1.2 √
P
150 kHz to 80 MHz
d = 0.58 √
P
150 kHz to 80 MHz
(ISM and amateur radio bands)
Radiated RF d = 0.35 √
P
80 MHz to 800 MHz
d = 0.7 √
P
800 MHz to 2.7 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 metres (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 this unit is used exceeds the
applicable RF compliance level above, this unit should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating this unit.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Guidance and manufacturer’s declaration – electromagnetic immunity
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