17
Guidance and manufacturer’s declaration - electromagnetic immunity
The NeXus-4 is intended for use in the electromagnetic environment specified below. The customer or the user of the
NeXus-4 should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment - guidance
Voltage dips, short
interruptions and
voltage variations on
power supply input
lines IEC 61000-4-11
<5 % U
T
(>95 % dip in U
T
)
for 0,5 cycle
40 % U
T
(60 % dip in U
T
)
for 5 cycles
70 % U
T
(30 % dip in U
T
)
for 25 cycles
<5 % U
T
(>95 % dip in U
T
)
for 5 s
Not applicable
Battery powered
equipment
Not applicable
Battery powered
equipment
Not applicable
Battery powered
equipment
Not applicable
Battery powered
equipment
Power frequency
(50/60 Hz) magnetic
field IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
NOTE U
T
is the a.c. mains voltage prior to application of the test level.
Guidance and manufacturer’s declaration – electromagnetic immunity
The NeXus-4 is intended for use in the electromagnetic environment specified below. The customer or the user of the
NeXus-4 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 NeXus-4, 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 V
1.2√
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
1.2√
80 MHz to 800 MHz
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
