Interacoustics AT235 Instructions For Use Manual page 62

AT235 Instructions for Use - EN
Guidance and manufacturer's declaration — electromagnetic immunity
The AT235 is intended for use in the electromagnetic environment specified below. The customer or the user of the AT235 should
assure that it is used in such an environment,
Immunity test IEC / EN 60601
test level
Conducted RF 3 Vrms
IEC / EN 61000-4-6 150kHz to 80 MHz
Radiated RF 3 V/m
IEC / EN 61000-4-3 80 MHz to 2,5 GHz
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 AT235 is used exceeds the applicable RF compliance level above, the AT235 should be
observed to verify normal operation, If abnormal performance is observed, additional measures may be necessary, such as re-
orienting or relocating the AT235 .
(b)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance level Electromagnetic environment –
guidance
Portable and mobile RF
communications equipment
should be used no closer to any
parts of the AT235 , including
cables, than the recommended
separation distance calculated
from the equation applicable to
the frequency of the transmitter.
Recommended separation
distance
MHz
3 Vrms
GHz
Where P is the maximum output
power rating of the transmitter in
3 V/m 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:
Page 56
=
d 1 2 , P
=
d 1 2 , P
80 MHz to 800
=
d 2 3 , P
800 MHz to 2,5