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Guidance and manufacturer's declaration – electromagnetic immunity
The bed is intended for use in the electromagnetic environment specified below. The customer or the
user of the bed should assure that it is used in such an environment.
IEC 60601 test
Immunity test
level
Conducted RF
3V rms
IEC 61000-4-6
150kHz to 80MHz
Radiated RF
3V/m
IEC 61000-4-3
80MHz to 2.5GHz
At 80MHz and 800MHz, the higher frequency range applies.
NOTE 1
These guidelines may not apply in all situations. Electromagnetic propagation is affected
NOTE 2
by absorption and reflection from structures, objects and people.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
a
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 bed is used exceeds the applicable RF compliance level
above, the bed should be observed to verify normal operation. If abnormal performance is
observed additional measures may be necessary, such as reorienting or relocating the bed.
Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.
b
746-585-UK-5
Compliance
Electromagnetic environment -
level
guidance
Portable and mobile RF communication
s equipment should be used no closer to
any part of the bed, including cables,
than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
3V
3V/m
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 in metres (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,
less than the compliance level in each
frequency range.
Interference may occur in the
vicinity of equipment marked
with the following symbol:
80 MHz to 800MHz
800MHz to 2.5GHz
a
should be
b
49
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