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38
Guidance and manufacturer’s declaration – electromagnetic immunity (continued)
The VPAP Adapt SV is intended for use in the electromagnetic environment specified below. The customer
or the user of the VPAP Adapt SV should assure that it is used in such an environment.
Immunity
test
IEC60601-1-2
test level
Complianc
e level
Electromagnetic environment –
guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the VPAP Adapt SV, including cables,
than the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms d = 1.17 √P
Radiated RF
IEC 61000-4-3
10 V/m
80 MHz to 2.5 GHz
10 V/m d = 0.35 √P 80 MHz to 800 MHz
d = 0.70 √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 strengths 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.
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 VPAP Adapt SV is used exceeds the applicable RF compliance level above, the VPAP Adapt SV should
be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the VPAP Adapt SV.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
228234 VPAP Adapt SV User Guide USA Eng.book Page 38 Monday, October 13, 2008 2:15 PM