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Radiated RF
IEC 61000-4-3
10 V/m 80 MHz
to 2.7 GHz
10 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). Field
strengths from fixed RF trans
-
mitters, as determined by an
electromagnetic site survey, a
should be less than the com
-
pliance level in each frequency
range b Interference may occur
in the vicinity of equipment
marked 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 The ISM (industrial, scientific and medical) bands between 0,15 MHz and 80 MHz are
6,765 MHz to 6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and
40,66 MHz to 40,70 MHz. The amateur radio bands between 0,15 MHz and 80 MHz are 1,8
MHz to 2,0 MHz, 3,5 MHz to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to 7,3 MHz, 10,1 MHz to
10,15 MHz, 14 MHz to 14,2 MHz, 18,07 MHz to 18,17 MHz, 21,0 MHz to 21,4 MHz, 24,89
MHz to 24,99 MHz, 28,0 MHz to 29,7 MHz and 50,0 MHz to 54,0 MHz.
b The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and
in the frequency range 80 MHz to 2,7 GHz are intended to decrease the likelihood that
mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 has been incor
-
porated into the formulae used in calculating the recommended separation distance for
transmitters in these frequency ranges.
c 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 electromagnet
-
ic environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the Model WDP-303936
is used exceeds the applicable RF compliance level above, the Model WDP-303936 should
be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the Model WDP-303936.
d Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.