Voltage dips, short inter-
ruptions 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 % UT (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
<5 % U
T
(>95
% dip in U
T
)
for 0.5 cycle
40 % UT (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
Mains power quality should be that of a typical commercial or hospital environment. If the
user of the AURICAL Aud requires continued operation during power mains interruptions, it is
recommended that the AURICAL Aud be powered from an uninterruptible power supply or a
battery.
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 typ-
ical commercial or hospital environment.
U
T
is the AC mains voltage prior to application of the test level.
Guidance and manufacturer's declaration - electromagnetic immunity - for equipment and systems that are NOT life-supporting
AURICAL Aud is intended for use in the electromagnetic environment specified below. The user of AURICAL Aud should ensure that it is used in such an envir-
onment.
Immunity test IEC 60601
test level
Compliance level Electromagnetic environment - guidance
Radiated RF
IEC 61000-4-3
3 V/m
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V/m Portable and mobile RF communications equip-
ment should be used no closer to any part of
AURICAL Aud, including cables, than the recom-
mended separation distance calculated from the
equation applicable to the frequency of the trans-
mitter.
Recommended separation distance:
d = 1.2
d = 1.2 for 80 MHz to 800 MHz
d = 2.3 for 80 MHz to 2.5 GHz,
where P is the maximum output power rating of
the transmitter in watts (W) according to the trans-
mitter 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 equip-
ment marked with this symbol:
32 Otometrics - AURICAL Aud
17 Technical specifications
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