CareFusion Spiro USB Manual De Funcionamiento página 31

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.
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,
be less than the compliance level in
each frequency range.
Interference may occur in the
vicinity of equipment marked with
the following symbol:
29
800 MHz to 2.5 GHz
a
should
b