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Guidance and manufacturer’s declaration on electromagnetic interference immunity
The THERA-fit is intended for operation in the electromagnetic environment specified below. The THERA-fit owner or user should ensure that
the apparatus is used in such an environment.
Interference immunity test
IEC 60601 testing level Compliance level
Guidance on electromagnetic environment
Conducted high-frequency
interference as per
IEC 61000-4-6
Irradiated high-frequency
interference as per
IEC 61000-4-3
3 V
eff
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V
eff
3V/m
Portable and mobile radio equipment should not be
used in closer proximity with the THERA-fit (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]
= 1.17
d = [3.5/3]
= 1.17
for 80 MHz to 800 MHz
d = [7.0/3]
= 2.33
for 800 MHz to 2.5 GHz
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.
Interference is possible in the vicinity of equipment
that carries the following symbol.
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.
P
P
P
P
P
P
)
)
)
(
(
(
Содержание THERA-fit
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