114 Manufacturer’s declaration on electromagnetic compatibility
Guidance and manufacturer‘s declaration – electromagnetic immunity
Radiated RF
IEC 61000-4-3
E
1
= 3 V/m
80 MHz – 2.5 GHz
3 V/m
d = 1,17 √P
80 MHz - 800 MHz
d = 2,33 √P
800 MHz - 2.5 GHz
Field strengths from fi xed RF
transmitters, as determined
by an electromagnetic site
survey
a
, should be less than
the compliance level in each
frequency range. Interference
may occur in the vicinity of
equipment marked with the
following symbol
b
.
Note 1 At 80 MHz and 800 MHz the higher frequency range is essential.
Note 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and refl ection from structures, objects and people.
a
Field 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 side survey should be considered. If the measured fi eld strength
outside the location in which the point 2 is used exceeds the compliance level, the point 2 should
be observed to verify normal operation. If abnormal performance is observed, additional measures
my be necessary, such as relocating or using another location of the point 2.
b
Over the frequency range from 150 kHz to 80 MHz the fi eld strength should be lower than 3 V/m.
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