78 EN
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 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 pagation 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 electromagnetic site survey should be considered. If the measured field strength in the
location in which the Sidne™ system is used exceeds the applicable RF compliance level above, the
Sidne™ system should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the Sidne™ unit.
(b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Guidance and Manufacturer's Declaration: Electromagnetic
Immunity (Continued)
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