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100 Manufacturer’s declaration on electromagnetic compatibility
Guidance and manufacturer’s declaration – electromagnetic immunity
Radiated RF acc. to IEC 61000-4-3
3 V/m
80 MHz – 2.5 GHz 3 V/m
d = 1.16  P for 80 MHz to 800 MHz
d = 2.33

P for 800 MHz to 2.5 GHz
with P as the rated maximum output power
of the transmitter in watts (W), according to
the transmitter’s manufacturer, and
d as the
recommended safety distance in meters (m).
Field strengths from fi xed RF transmitters, as
determined by an electromagnetic site sur-
vey
a
, should be less than the compliance level
in each frequency range
b
.
Interference may occur in the vicinity of equip-
ment marked with the following symbol.
Note 1 U
T
is the mains alternating current before application of the test level.
Note 2 At 80 MHz and 800 MHz the higher frequency range is essential.
Note 3 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and re
fl ection
from structures, objects and people.
a
The fi eld strengths from fi xed 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
fi xed RF transmitters, an electromagnetic site survey should be considered. If the mea-
sured fi eld strength outside the location in which the TRENDvent ventilator is used exceeds the compliance level, the TREND-
vent ventilator should be observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as re-orienting or relocating the TRENDvent ventilator.
b
Over the frequency range from 150 kHz to 80 MHz the fi eld strength should be lower than 10 V/m.