nox A1 - Page 47

Nox A1 Manual
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Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
Guidance and manufacturer’s declaration – electromagnetic immunity
The Nox A1 recorder is intended for use in the electromagnetic environment specified below. The customer or
the user of the device should assure that it is used in such an environment.
Immunity test
IEC 60601 test
level
Compliance level
Electromagnetic environment – guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood, concrete or ceramic
tile. If floors are covered with synthetic
material, the relative humidity should be at
least 30%.
Electrical fast
transient/burst
IEC 61000-4-4
± 2 kV for power
supply lines
± 1 kV for
input/output lines
Not applicable
Mains power quality should be that of a
typical commercial or hospital environment.
Surge
IEC 61000-4-5
± 1 kV line(s) to
line(s)
± 2 kV lines(s) to
earth
Not applicable
Mains power quality should be that of a
typical commercial or hospital environment.
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
Mains power quality should be that of a
typical commercial or hospital environment. If
the user of the A1 device requires continued
operation during power mains interruptions,
it is recommended that the A1 device be
powered from an uninterruptible power
supply or a battery.
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
3A /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.