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5
1. Important
Guidance and manufacturer’s declaration – electromagnetic immunity – for
EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING:
The monitor is intended for use in the electromagnetic environment specified below. The
customer or the user of the monitor should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment – guidance
Conducted
RF
IEC 61000-
4-6
Radiated RF
IEC 61000-
4-3
3 Vrms
150 kHz to 80
MHz
3 V/m
80 MHz to 2.5
GHz
3 Vrms
3 V/m
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 applicable to the frequency
of the transmitter.
Recommended separation distance:
d = 1.2
√P
d = 1.2
√P
80 MHz to 800 MHz
d = 1.2
√P
800 MHz to 2.5 GHz
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 metres
(m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey:
a.
Should be less than the compliance level in
each frequency range.
b.
Interference may occur in the vicinity of
equipment marked with the following
symbol:
Note
• At 80 MHz and 800 MHz, the higher frequency range applies.
• These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
• 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.
• Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3
V/m.
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