ResMed Stellar Serie Guide De L'utilisateur page 4

Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
Notes:
• Ut is the AC mains voltage prior to application of the test level.
• At 80 MHz and 800 MHz, the higher frequency range applies.
• 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.
4
IEC 60601-1-2 Compliance level
test level
3 Vrms 3 Vrms
150 kHz to 80 MHz 150 kHz to 80 MHz
6 Vrms 6 Vrms
in ISM bands in ISM bands
between 150 kHz between 150 kHz
and 80 MHz and 80 MHz
3 V/m 3 V/m
80 MHz to 2.5 GHz 80 MHz to 2.5 GHz
(Professional (Professional
Healthcare) Healthcare)
10 V/m 10 V/m
80 MHz to 2.7 GHz 80 MHz to 2.7 GHz
(Home Healthcare) (Home Healthcare)
Electromagnetic environment –guidance
Portable and mobile RF communications equipment
should be used no closer to any 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:
d = 0.35 √P outside ISM bands
d = 1.2 √P inside ISM bands
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 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,
be less than the compliance level in each frequency
range.
b
Interference may occur in the vicinity of equipment
marked with the following symbol:
should
a