Cooey B61T, Руководство пользователя

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Version Number: 1.0
4. EMC Declaration (Continued)
Guidance and manufacturer’s declaration – electromagnetic immunity
The “Digital Blood Pressure Monitor B61T” is intended for use in the electromagnetic environment specified below. The customer or
the user of the “Digital Blood Pressure Monitor B61T” should ensure 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
“Digital Blood Pressure Monitor B61T”, 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 V
d=1.2
√
P
d=1.2
√
P 80MHz to 800MHz
d=2.3
√
P 800MHz to 2.5 GHz
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2,5 GHz
3 V/m
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).
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
b
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 “Digital Blood Pressure Monitor B61T” is
used exceeds the applicable RF compliance level above, the Medical Digital Blood Pressure Monitor B61T should be observed to
verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating
the “Digital Blood Pressure Monitor B61T”.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [
V
1
] V/m.