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Guidance and manufacture’s declaration – electromagnetic immunity
The DEVICE is intended for use in the electromagnetic environment specified below. The
customer or the user of DEVICE should assure that it is used in such an environment.
Immunity test IEC 60601 Compliance Electromagnetic environment
test level level - guidance
Conducted RF 3 Vrms 3 Vrms Portable and mobile RF communications
IEC 150 kHz to equipment should be used no closer to any
61000-4-6 80 MHz part of the DEVICE, including cables, than
the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation
distance
Radiated RF 3 V/m 3 V/m
IEC 80 MHz to
80 MHz to 800 MHz
61000-4-3 2.5 GHz
800 MHz to 2.5 GHz
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 compliance
level in each frequency range.b Interference
may occur in the vicinity 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/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 DEVICE is used exceeds the applicable RF compliance level
above, the DEVICE should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting
or relocating the DEVICE.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3
V/m.
