13. 3 ELECTROMAGNETIC IMMUNITY / RADIOFREQUENCY MOBILE EQUIPMENT
The device is intended for use in the electromagnetic environment speciÀ ed in the table below. The user and/
or installer must ensure that the device is used in such an electromagnetic environment.
Immunity test
Portable and mobile radiofrequency communications devices must not be used near the device (including its cables) at
a distance less than that recommended and calculated according to the frequency and power of the emitter.
Conducted
disturbance,
radiofrequency À elds.
IEC61000-4-6
Radiated
radiofrequency
electromagnetic À eld.
IEC61000-4-3
The electromagnetic À eld strengths of À xed radiofrequency emitters, as determined by an electromagnetic
environment measurement (a), must be less than the compliance level in each frequency range (b).
Interference may occur near equipment marked with the symbol below:
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These speciÀ cations may not be applicable in all situations. Electromagnetic propagation is affected by
absorption and reÁ ection from structures, objects and persons.
(a): The electromagnetic À eld strengths of À xed radiofrequency emitters, such as base stations for mobile
telephones (cellular/cordless), mobile radios, amateur radio, AM/FM radio broadcasts and TV broadcasts
cannot be determined exactly by theory. To assess the electromagnetic environment due to À xed
radiofrequency emitters, an electromagnetic environment measurement must be made. If the measured
radiofrequency À eld strength in the immediate environment where the product is used exceeds the
compliance level speciÀ ed above, the performance of the product must be tested to verify whether it
conforms to the speciÀ cation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the product.
(b): In the 150 kHz to 80 MHz frequency range, the electromagnetic À eld strengths must be less than 3 V/m.
IEC 60601 test
Compliance level
level
3 V/m
150 KHz to 80
MHz
3 V/m
80 MHz to 2.5
GHz
Electromagnetic environment - guidance
Recommended separation distance:
3 V/m
d = 1.2
d = 1.2
d = 2.3
3 V/m
Where P is the maximum power rating of the emitter
in watts (W) according to the manufacturer's
speciÀ cations and d is the recommended minimum
separation distance in meters (m).
80MHz to 800MHz.
800MHz to 2.5GHz.
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