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Immunity to interference
The UNIT is intended for operation in the electromagnetic environment specified below.
The customer or user of the UNIT should make sure that it is used in such an environment.
Immunity interference
tests
Electrostatic discharge
(ESD) according to
IEC 61000-4-2
Electrical fast transient/
burst according to
IEC 61000-4-4
Surge voltages
according to
IEC 61000-4-5
Voltage dips, short inter-
ruptions and variations of
the power supply
according to
IEC 61000-4-11
Magnetic field of power
frequencies (50/60 Hz)
according to
IEC 61000-4-8
Remarks: U
is the AC supply voltage prior to application of the test level.
T
Conducted HF interfer-
ence
IEC 61000-4-6
IEC 60601-1-2 test level
± 6kV contact discharge
± 8 kV air discharge
± 1kV for input and output
lines
± 2kV power cables
± 1kV push-pull voltage
± 2kV push-pull voltage
<5% U
for ½ period
T
(>95% dip of U
)
T
40% U
for 5 periods
T
(60% dip of U
)
T
70% U
for 25 periods
T
(30% dip of U
)
T
<5% U
for 5sec.
T
(>95% dip of U
)
T
3 A/m
3V
eff
a
150 kHz to 80 MHz
Conformance level
± 6kV contact discharge
± 8kV air discharge
± 1kV for input and output
lines
± 2kV power cables
± 1kV push-pull voltage
± 2kV push-pull voltage
<5% U
for ½ period
T
(>95% dip of U
)
T
40% U
for 5 periods
T
(60% dip of U
)
T
70% U
for 25 periods
T
(30% dip of U
)
T
<5% U
for 5sec.
T
(>95% dip of U
)
T
3 A/m
3V
eff
Electromagnetic environment guide-
lines
Floors should be made of wood or con-
crete or covered with ceramic tiling. If the
floor surface consists of synethetic mate-
rial, the relative humidity must be at least
30%.
The quality of the supply voltage should
conform to the typical business or hospi-
tal environment.
The quality of the supply voltage should
conform to the typical business or hospi-
tal environment.
The quality of the supply voltage should
correspond to the typical business or
hospital environment.
If the user of the UNIT requires it to con-
tinue functioning following interruptions
of the power supply, it is recommended
to have the UNIT powered by an uninter-
ruptible power supply or a battery.
The power frequency magnetic fields
should correspond to the typical values
found in the relevant business and hospi-
tal environment.
Portable and mobile radio equipment
must not be used within the recom-
mended working clearance from the
UNIT and its cables, which is calculated
based on the equation suitable for the
relevant transmission frequency.
Recommended working clearance:
[
1 2 ,
] P
d
=
23
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