Interacoustics AA222 Instructions For Use Manual page 185

AA222 Руководство по эксплуатации – RU
Guidance and manufacturer's declaration — electromagnetic immunity
The AA222 is intended for use in the electromagnetic environment specified below. The customer or the user of the
AA222 should assure that it is used in such an environment,
Immunity test
Conducted RF
IEC / EN 61000-4-6
Radiated RF
IEC / EN 61000-4-3
NOTE1 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)
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 AA222 is used exceeds the applicable RF
compliance level above, the AA222 should be observed to verify normal operation, If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the AA222.
(b)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
IEC / EN 60601
test level
3 Vrms
150kHz to 80 MHz
3 V/m
80 MHz to 2,5 GHz
Compliance level
3 Vrms
3 V/m
Electromagnetic environment –
guidance
Portable and mobile RF
communications equipment should
be used no closer to any parts of the
AA222, including cables, than the
recommended separation distance
calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
=
d , 1 2 P
=
d , 1 2 P
80 MHz to 800 MHz
=
d 2 3 , P
800 MHz to 2,5 GHz
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
meters (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:
Стр. 90