19
Radiated RF
IEC 61000-4-3
3 V/m 80 MHz to 2.5
GHz
[E
1
] V/m
V
1
d = [3.5
] √ P 80 MHz to
800 MHz
E
1
d = [ 7
] √ P 800 MHz to
2.5 GHz ……E
1
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 meters (m).
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site survey,
a,
should be less than the
compliance level is each
frequency range.
b
Interference may occur in the
vicinity of equipment marketed
with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 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 RD transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the CO Check is used
exceeds the applicable RD compliance level above, the CO Check should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the CO Check.
b Over the frequency range 150 KHz to 80 MHz, field strength should be less that [V
1]
V/m
