48 Notes on EMC
Guidelines and Manufacturer´s Declaration - Immunity
The product ATMOS
®
Audio Cube 31 is intended for use in the electromagnetic environ-
ment specified below. The customer or user of the audiometer should ensure that it is
used in such an environment.
Immunity Test
IEC 60601- Test
Level
Compliance
Level
Electromagnetic Environment -
Guidance
Electrostatic
discharge (ESD)
according to IEC
61000-4-2
+/- 6 kV Contact
+/- 8 kV Air
+/- 6 kV Contact
+/- 8 kV Air
Floors should be made of wood
or concrete or tiled with ceramic
tiles. If floors are synthetic, the
relative humidity should be at
least 30%.
Fast electrical
transient/burst IEC
61000-4-4
+/- 2 kV Mains
+/- 1 kV I/Os
+/- 2 kV Mains
+/- 1 kV I/Os
The quality of the supply voltage
should correspond to a typical
commercial or hospital environ-
ment.
Surges IEC 61000-
4-5
+/- 1 kV differen-
tial mode
+/- 2 kV com-
mon-mode
+/- 1 kV differen-
tial mode
+/- 2 kV com-
mon-mode
The quality of the supply voltage
should correspond to a typical
commercial or hospital environ-
ment.
Voltage Dips
/ Dropout IEC
61000-4-11
< 5 % UT
(> 95 % Dip of the
UT) for ½ Cycle
complies
The quality of the supply voltage
should correspond to a typical
commercial or hospital environ-
ment. If the user of the audiom-
eter requires continued function
during interruptions of the ener-
gy supply, it is recommended to
supply the audiometer from an
uninterruptible power supply or
a battery.
40 % UT
(60 % Dip of the
UT) for 5 Cycles
complies
70 % UT
(30 % Dip of the
UT) for 25 Cycles
complies
< 5 % UT
(> 95 % Dip of the
UT) for 5 s
complies (criteria
B)
Magnetic field at
power frequency
50/60 Hz acc. to
IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields
should be that of a typical com-
mercial or hospital environment.
NOTE UT is the alternating mains voltage prior to application of the test levels