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Safety and Performance Tests 34 Installation and Specifications
367
Interference may occur in the vicinity of equipment marked with this symbol:
Field strengths from fixed transmitters, such as base stations for radio (cellular, cordless) telephones and
land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in
which the monitor is used exceeds the applicable RF compliance level above, the monitor should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the monitor.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects, and people.
Recommended separation distances from portable and mobile RF
communication equipment
The monitor is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or user of the monitor can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment and
the monitor as recommended below, according to the maximum output power of the communications
equipment.
Immunity test
IEC 60601-1-2
test level
Compliance level Electromagnetic environment guidance
Conducted RF
IEC 61000-4-6
3 V
RMS
150 kHz to 80 MHz
3 V
RMS
(1 V
RMS
for respiration
and BIS)
Recommended separation distance:
:
for respiration and BIS:
:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
(1 V/m for respiration
and BIS)
Recommended separation distance:
80 MHz to 800 MHz
80 MHz to 800 MHz for respiration and BIS
:
800 MHz to 2,5 GHz
800 MHz to 2,5 GHz for respiration and BIS
d
1.2 P=
d
3.5
P
=
d
1.2
P
=
d
3.5
P
=
d
2.3
P
=
d
7.0
P
=