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34
ELECTROMAGNETIC IMMUNITY
Immunity Test
IEC 60601 Test Level
Compliance Level
Electromagnetic Environment – Guidance
Conducted RF
EN 61000-4-6
Radiated RF
EN 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should be
used no closer to any part of the Winx Sleep Therapy System,
including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of the
transmitter.
Recommended separation distance:
d = 1.2
√
P
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 meters (m).
Field strength from fixed RF transmitters, as determined by an
electromagnetic site survey,
a
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.
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 Winx Sleep Therapy
System is used exceeds the applicable RF compliance level above, the Winx Sleep Therapy System should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Winx Sleep Therapy System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
PN 12149-B.indd 34
4/23/13 11:53 AM
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