Bowa ARC 300, Руководство по эксплуатации

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13 EMC
112
ARC 300 / ARC 350 Operating manual 900-350_IFU_V2.6_10296-S13-20100111-EN
Electromagnetic resistance to interference (DIN EN 60601-1-2, Table 204)
The ARC 300 and ARC 350 are intended for operation in the electromagnetic environment described below. The
customer or user of the ARC 300 and/or ARC 350 should ensure that these devices are operated in such an
environment.
Tests for resistance to
interference IEC 60601 test
level Conformity level Electromagnetic environment guidelines
Conducted HF interference
as per IEC 61000-4-6 3 V rms value
150 kHz to 80
MHz
10 V
Radiated HF interference
as per IEC 61000-4-3 3V/m
80 MHz to 2.5
GHz
10 V/m
Portable and mobile wireless devices should
not be used within the recommended
protective working clearance from the ARC
300 and ARC 350 and their cables, which is
calculated based on the equation suitable for
the relevant transmission frequency.
Recommended protective working
clearance:
d = 0.35 × √ P
d = 0.35 × √ passengers/h for 80 MHz to 800
MHz
d = 0.7 × √ passengers/h for 800 MHz up to
2.5 GHz
where P is the nominal transmitter output in
watts (W) specified by the transmitter
manufacturer and d is the recommended
protective working clearance in meters (m).
The field strength of stationary transmitters
should be lower for all frequencies as verified
by an on-site study
a
than the compliance
level
b
Interference is possible in the vicinity of
devices that bear the following symbol.
Note 1 The higher frequency range applies to 80 MHz and 800 MHz.
Note 2 These guidelines may not be applicable in all cases. The propagation of electromagnetic waves
is influenced by their absorption and reflection by buildings, objects and people.
a
Field strengths from stationary transmitters such as base stations for wireless telephones and
land mobile radios, amateur radio, AM and FM radio broadcasting and TV broadcasting cannot
be predicted theoretically with accuracy. A study of the electromagnetic phenomena of the
location should be done to determine the electromagnetic environment resulting from stationary
transmitters. If the measured field strength at the location where the ARC 300 and/or ARC 350
are being used exceeds the aforementioned compliance level, the ARC 300 and ARC 350 should
be monitored to verify that they are functioning properly. If unusual performance characteristics
are observed, additional measures may be necessary, such as repositioning or relocation of the
ARC 300 and AC 350.
b
Field strength should be lower than 10 V/m over the frequency range of 150 kHz to 80 MHz.