36 Specifications
429
In this table, U
T
is the a.c. mains voltage prior to application of the test level.
Recommended Separation Distance
WARNING
The monitor, equipped with a wireless network interface, intentionally receives RF electromagnetic
energy for the purpose of its operation. Therefore, other equipment may cause interference, even if
that other equipment complies with CISPR emission requirements.
In the following table, 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). The
values given in brackets are for respiration and BIS.
Portable and mobile RF communications equipment should be used no closer to any part of the
monitor, including cables, than the recommended separation distance calculated from the equation
appropriate for the frequency of the transmitter.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, should be
less than the compliance level in each frequency range.
Interference may occur in the vicinity of equipment marked with this symbol:
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 cycles
<5% U
T
(>95% dip in U
T
)
for 0.5 cycles
Mains power quality should be that
of a typical commercial and/or
hospital environment. If the user of
the monitor requires continued
operation during power mains
interruptions, it is recommended
that the monitor is equipped with
an internal battery or is powered
from an uninterruptible power
supply.
40% U
T
(60% dip in U
T
) for
5 cycles
40% U
T
(60% dip in U
T
) for
5 cycles
70% U
T
(30% dip in U
T
) for
25 cycles
70% U
T
(30% dip in U
T
) for
25 cycles
<5% U
T
(>95% dip in U
T
)
for 5 sec
<5% U
T
(>95% dip in U
T
)
for 5 sec
Power
frequency (50/
60 Hz) magnetic
field
IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic fields
should be a t levels characteristic of
a typical location in a typical
commercial and/or hospital
environment
Immunity test
IEC 60601-1-2
test level
Compliance level
Electromagnetic environment
guidance
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