ERT Asthma Monitor AM1+ Gebrauchsanweisung Seite 123

Guidance and Manufacturer's Declaration – Electromagnetic Immunity
The AM3 is intended for use in the electromagnetic environment specified below. The customer or the user of
the AM3 should ensure that it is used in such an environment.
Immunity test IEC 60601 test level
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to 2,5 GHz
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 reflections 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
theroretically 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 AM3 is used exceeds the applicable RF compliance level above, the AM3 should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the AM3.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Version 08.00 • 14APR2014
Compliance level Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to
any part of the AM3, including cables, that
the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter:
Recommended protection distance:
Not applicable d = 1.17 1/V * √P
3 V/m d = 1.17 m/V * √P for 80 MHz to 800 MHz
d = 2,33 m/V * √P for 800 MHz to 2.5 GHz
where P is the maximum output power rating
of the transmitter in watts (W) acc. to the
transmitter manufacturer and d is the recom-
mended separation distance in meters (m).
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey (a), should be less than the compli-
ance level in each frequency range (b).
Interference may occur in the vicinity of
equipment marked with the following
symbol:
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