Beurer BM 20 Gebrauchsanweisung Seite 75

Guidance and manufacture's declaration – electromagnetic immunity – for EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING
Guidance and manufacture's declaration – electromagnetic immunity
The BM 20 is intended for use in the electromagnetic environment specifi ed below. The customer or the user of BM 20 should assure that it is
used in such an environment.
Immunity test IEC 60601 test
level
Conducted RF 3 V
rms
IEC 61000-4-6 150 kHz to 80 MHz
outside ISM bands
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 aff ected by absorption and refl ection from structu-
res, objects and people.
a Field strengths from fi xed 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 fi xed RF transmitters, an electromagnetic site survey should be considered. If the measured fi eld strength in the location in which the
BM 20 is used exceeds the applicable RF compliance level above, the BM 20 should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the BM 20.
b Over the frequency range 150 kHz to 80 MHz, fi eld strengths should be less than 3 V/m.
Compliance Electromagnetic environment – guidance
level
Portable and mobile RF communications equipment should be used no closer to any part
of the BM 20, including cables, than the recommended separation distance calculated
from the equation applicable to the frequency of the transmitter.
3 V
rms
Recommended separation distance
d =
d = 80 MHz to 800 MHz
d = 800 MHz to 2.5 GHz
Where P is the maximum output power rating of the transmitter in watts (W) according to
3 V/m
the transmitter manufacturer and d is the recommended separation distance in metres (m).
Field strengths from fi xed RF transmitters, as determined by an electromagnetic site sur-
vey, 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:
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