Huntleigh D900, Инструкция по эксплуатации

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18
Electr
oma
gnetic Compa
tibility
Guidance and Manufacturer’s declaration - electromagnetic immunity
The Doppler is intended for use in the electromagnetic environment speci fi ed below. The customer or the
user of the Doppler should assure that it is used in such an environment.
Immunity Test IEC 60601 test level
Compliance
level
Electromagnetic Environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any
part of the Doppler, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Conducted RF
IEC 61000-4-6 3 Vrms
150kHz to 80MHz
outside ISM bands
a
6 Vrms
150 kHz to 80 MHz
in ISM and amateur
radio bands
3V
6V
d
= 1.2
√
P
d = 2.0
¥
P
Radiated RF
IEC 61000-4-3 10 V/m
80MHz to 2.7GHz 10V/m
d = 1.2
√
P
80MHz to 800MHz
d = 2.3
√
P
800MHz to 2.7GHz
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 metres m).
b
Field strengths from fi xed RF transmitters, as
determined by an electromagnetic site survey, c
should be less than the compliance level in each
frequency range
d
.
Interference may occur in the vicinity of the
equipment marked with the following symbol:
NOTE 1 At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and re
fl ection from structures, objects and people.
a
The ISM (industrial, scienti fi c and medical) bands between 150 kHz and 80 MHz are 6,765 MHz, to 6,795
MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70 MHz.
b
The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency
range 80 MHz to 2,5 GHz are intended to decrease the likelihood that mobile/portable communications
equipment could cause interference if it is inadvertently brought into patient areas. For this reason, an
additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in these
frequency ranges.
c
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
Dopper is used exceeds the applicable RF compliance level above, the Doppler should be observed to verify
normal operation. If abnormal performancec is observed, additional measures may be necessary, such as
re-orienting or relocating the Doppler.
d Over the frequency range 150kHz to 80kHz, fi eld strengths should be less than 3V/m.