143
Table 3
Guidance and manufacturer’s declaration – electromagnetic immunity
The EM 49 is intended for use in the electromagnetic environment specified below. The customer or the user of the EM 49 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 ± 1 kV for input/output lines
Mains power quality should be that of a typical commercial or hospital
environment.
Surge
IEC 61000-4-5
± 1 kV line to line
± 2 kV line 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 EM 49 requires continued operation
during power mains interruptions, it is recommended that the
EM 49 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 typical commercial or hospital environment.
NOTE:
U
T
is the a.c. mains voltage prior to application of the test level.
