27
recommended
separation
distance
calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance
d= 1.2√P 150kHz-80MHz
Radiated
RFIEC6100
0-4-3
3V/m 80
Mhz to
2.7 Ghz
3V/m
d= 1.2√P 80MHz-800MHz
d= 2.3√P 800MHz-2.5GHz
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:
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.
*Field strengths from fixed transmitters, such as base stations for radio (cellular
/cordless) telephones and land mobile radios, amateur radios, AM and FM
radiobroadcast 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
UBREATH® PRO
Spirometer System is used exceeds the applicable RF compliance level above, the
UBREATH® PRO
Spirometer System should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such
as re-orientating or relocating the UBREATH® PRO Spirometer System.
*Over the frequency range 150kHz to 80 MHz, field strengths should be less
than 3 V / m.
Recommended Separation Distance
The
UBREATH® PRO
Spirometer System is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled.
The customer or the user of the
UBREATH® PRO
Spirometer System can help
prevent electromagnetic interference by maintaining a minimum distance
