CareFusion SpiroUSB Manuel D'utilisation page 60

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 SpiroUSB is used exceeds the applicable RF compliance level above, the SpiroUSB
should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orientating or relocating the
SpiroUSB
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 meters (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:
58
80 MHz to 800 MHz
800 MHz to 2.5 GHz
a
b