– 60 –
where P is the
maximum output
power rating of the
transmitter
in watts (W)
according to the
transmitter
manufacturer and
d is the recommen-
ded separation
distance in metres
(m).
Field strengths
from fixed RF
transmitters, as
determined
by an electroma-
gnetic site survey,a
should be
less than the
compliance level in
each frequency
range.b
Interference may
occur in the vicini-
ty 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.
a) Field strengths from fixed transmitters, such as base stations for radio (cellular/cor-
dless) telephones and land mobile radios, amateur radio, AM and FM radio broad-
cast 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 “Digital Blood Pressure Monitor ORO-N3 COMPACT” is used exce-
eds the applicable RF compliance level above, the Medical Digital Blood Pressure
Monitor ORO-N3 COMPACT should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the “Digital Blood Pressure Monitor ORO-N3 COMPACT”.
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than
[V1] V/m.
