䕔
7-4
Guidance and manufacturer's declaration -
electroma
netic immunit
The EM-4000 is intended for use in the electromagnetic environment specified below. The
customer or the user of the EM-4000 should assure that it is used in such an environment.
Immunity test IEC 60601 test
levell
Compliance level Electromagnetic environment -
guidance
Electrostatic
Discharge(ESD)
IEC 61000-4-2
± 6kV contact
± 8kV air
± 6kV contact
± 8kV 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
± 2kV for power
supply lines
± 1kV for
input/output lines
± 2kV for power
supply lines
± 1kV for
input/output lines
Mains power quality should be
that of a typical commercial or
hospital environment.
Surge
IEC 61000-4-5
± 1kV differential
mode
± 2kV common
mode
± 1kV differential
mode
± 2kV common
mode
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 % UT
(> 95 % dip in
UT )
for 0,5 cycle
40 % UT
(60 % dip in UT )
for 5 cycles
70 % UT
(30 % dip in UT )
for 25 cycles
< 5 % UT
(> 95 % dip in
UT ) for 5 sec
< 5 % UT
(> 95 % dip in
UT )
for 0,5 cycle
40 % UT
(60 % dip in UT )
for 5 cycles
70 % UT
(30 % dip in UT )
for 25 cycles
< 5 % UT
(> 95 % dip in
UT ) for 5 sec
Mains power quality should be
that of a typical commercial
or hospital environment. If the
user of the EM-4000 requires
continued operation during
power mains interruptions,
it is recommended that the
EM-4000 is powered from an
uninterruptible power supply or
a battery.
Power frequency
(50/60 Hz)
magnetic fi eld
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 : UT is the a.c. mains voltage prior to application of the test level.
Table 202
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