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3. Guidance and manufacturer’s declaration - electromagnetic immunity
This medical LCD monitor is intended for use in the electromagnetic environment specified below.
The customer or the user of monitor should assure that it is used in such an environment.
Immunity test
IEC 60601 Test
level Compliance
level Electromagnetic environment-guidance
Power frequency
(50/60Hz) Magnetic
field IEC 61000-4-8
3.0 A/m 3.0 A/m
Power frequency magnetic fields should
be at levels characteristic of a typical
location in a typical commercial or
hospital environment.
Voltage dips, short
Interruptions and
voltage variations
on power supply
input lines IEC
61000-4-l 1
<5% U
T
(>95% dip
in U
T
) for 0.5 cycle
40% U
T
(60% dip
in U
T
) for 5 cycle
70%
U
T
(30% dip
in U
T
) for 25 cycle
<5% U
T
(<95% dip
in U
T
) for 5 sec.
<5% U
T
(>95% dip
in U
T
) for 0.5 cycle
40% U
T
(60% dip
in U
T
) for 5 cycle
70%
U
T
(30% dip
in U
T
) for 25 cycle
<5% U
T
(<95% dip
in U
T
) for 5 sec.
Main power quality should be that of a
typical commercial or hospital
environment.
If the user of monitor requires
continued operation during power
mains interruptions, it is recommended
that monitor be powered from an
uninterruptible power supply or a
battery.
Note: UT is the A.C. mains voltage prior
to application of the test level.
Radiated RF
IEC 61000-4-3
3 V/m
80.0 MHz to
2.5 GHz 3 V/m
80.0 MHz to
2.5 GHz
Recommended separation distance
d = [ 3.5 / E
1
] √P
80MHz to
800MHz
d = [ 7 / E
1
] √P
80MHz to
2.5GHz
Where P is the maximum output
power rating of the transmitter
in watts (W) according to the
transmitter manufacturer and d is the
recommended separation distance in
meters(m). Field strengths from fixed
RF transmitters, as determined by an
electromagnetic site survey, should be
less than the compliance level in each
frequency range.