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Guidance and manufacturer's declaration on electromagnetic interference immunity
The THERA-vital is intended for operation in the electromagnetic environment specified below. The THERA-vital owner or user should ensure
that the apparatus is used in such an environment.
Interference immunity test
Conducted high-frequency
interference as per
IEC 61000-4-6
Irradiated high-frequency
interference as per
IEC 61000-4-3
NOTE 1: At 80 MHz and 800 MHz the higher frequency range applies.
NOTE 2: This guidance may not be applicable in all cases. The propagation of electromagnetic energy is affected by absorption and reflection
by buildings, objects and people.
IEC 60601 testing level Compliance level
3 V
3 V
eff
eff
150 kHz to 80 MHz
3 V/m
3V/m
80 MHz to 2.5 GHz
Guidance on electromagnetic environment
Portable and mobile radio equipment should not be
used in closer proximity with the THERA-vital (including
power cord) than the recommended safe distance. That
distance is calculated according to the equation appro-
priate to the transmission frequency.
Recommended safe distance:
d = [3.5/3]
d = [3.5/3]
d = [7.0/3]
where P is the rated output of the transmitter in watts
(W) as stated by the transmitter manufacturer and d is
the recommended safe distance in metres (m).
The field strength of fixed radio transmitters at all fre-
quencies should be below the compliance level based
on on-site measurements.
IInterference is possible in the vicinity of equipment
that carries the following symbol.
64
P
= 1.17
P
P
= 1.17
P
for 80 MHz to 800 MHz
P
= 2.33
P
for 800 MHz to 2.5 GHz
)
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