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Note 1:
These guidelines may not apply in all situations.
Electromagnetic propagation is affected by absorption
and reflection from structures, objects, and people.
a. Essential performance of the Platinum Series system per
IEC 60601 requirements is defined as auditory stimulation
within safe amplitudes.
b. 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
Platinum Series system is used exceeds the applicable
RF compliance level above, the Platinum Series systems
should be observed to verify normal operation.
c. Over the frequency range 150 kHz to 80 MHz, field
strengths should be less than 3 V/m.
30
separation distance calculated from the
equation applicable to the frequency of
the transmitter.
Recommended separation distance
d = 1.2√P < 800 MHz
d = 2.3√P ≥ 800 MHz
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). Field
strengths from fixed RF transmitters,
as determined by an electromagnetic
site survey,
should be less than the
b
compliance level in each frequency
range.
c
Interference may occur in the vicinity of
equipment marked with the following
symbol:
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