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Guidance and manufacturer’s declaration – electromagnetic immunity
The Ultimate Comfort is intended for use in the electromagnetic environment specified below. The customer or the user of the Ultimate Comfort should assure that
it is used in such an environment.
Immunity tests
IEC 60601 test level
Compliance level
Electromagnetic environment - guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the Ultimate
Comfort, including cables, than the recommended sepa-
ration distance calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance
Conducted RF
according IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
Radiated RF
according IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/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
distance in metres (m)
b
.
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:
REMARK 1 At 80 MHz and 800 MHz, the higher frequency range applies.
REMARK 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and
people.
a
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 elec-
tromagnetic site survey should be considered. If the measured field strength in the location in which the Ultimate Comfort is used exceeds the applicable RF
compliance level above, the Ultimate Comfort should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the Ultimate Comfort.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the Ultimate Comfort
The Ultimate Comfort is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the Ulti-
mate Comfort can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the Ultimate Comfort as recommended below, according to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter
P
in W
Separation distance according to frequency of transmitter
l in m
150 KHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
0,01
0.12
0.12
0.23
0,1
0.38
0.38
0.73
1
1.20
1.20
2.30
10
3.80
3.80
7.30
100
12.00
12.00
23.00
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in metres (m) can be estimated using the equation
applicable to the frequency of the transmitter, where
P
is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
REMARK 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
REMARK 2: These guidelines may not applicable in all situations.
Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
