Neuro-Audio-Screen, Neuro-Audio-Screen/OAE Hearing Screening Systems (Technical Manual)
98
Guidance and manufacturer’s declaration – electromagnetic immunity
The screening system is intended for operation in electromagnetic conditions environment described
below. The customer or user of the screening system should provide the screening system operation in
the specified electromagnetic conditions environment.
Immunity test
IEC 60601
test level
Compliance level
Electromagnetic environment
– guidance
±6 kV contact
±6 kV contact
Electrostatic discharge
(ESD)
by IEC 61000-4-2
±8 kV air
±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
%.
2 kV − for power
supply lines
2 kV
Electrical fast
transient/burst by IEC-
61000-4-4
1 kV − for
input/output lines
Not applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
1 kV differential
mode
±1 kV
Surge by IEC 61000-4-5
2 kV common
mode
±2 kV
Mains power quality should be
that of a typical commercial or
hospital environment.
<5% UT
(>95% dip in UT) for
0,5 and 1cycle
20 ms
40% UT
(60% dip in UT) for
5 cycles
100 ms
70% UT
(30% dip in UT) for
25 cycles
500 ms
120% UT
(20% dip in UT) for
25 cycles
500 ms
Voltage dips, short
interruptions and voltage
variations on power
supply input lines by IEC
61000-4-11
<5% UT
(>95 % dip in UT)
for 5 s
5000 ms
Mains power quality should
be that of a typical
commercial or hospital
environment. If the user of the
screening system requires
continued operation during
power mains interruptions, it
is recommended that the
screening system be powered
from an uninterruptible power
supply or a battery.
Power frequency
magnetic field
by IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic
fields should be that of a typical
commercial or hospital
environment.
Note: UT is the a.c. mains voltage prior to application of the test level.
