CareFusion Smoke Check Manual De Funcionamiento página 31

Radiated RF 3 V/m
IEC61000-4-3 80 MHz to
2.5 GHz
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 RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in
the location in which the Smoke Check is used exceeds the applicable RF compliance
level above, the Smoke Check should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary,
such as re-orientating or relocating the Smoke Check.
b.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than
3 V/m.
3 V/m d = 1.2√P
d = 2.3√P
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).
Fields strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,
should be less than the compliance
level in each frequency range.
Interference may occur in the vicinity
of equipment marked with the
following symbol:
29
80 MHz to 800 MHz
800 MHz to 2.5 GHz
a
b