Interacoustics AT235 Instructions For Use Manual page 59

Guidance and manufacturer's declaration — electromagnetic immunity
The AT235 is intended f or use in the electromagnetic environment specif ied below. The customer or the user
of the AT235 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 f requency range applies
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is af f ected by
absorption and ref lection f rom structures, objects and people.
(a) Field strengths f rom f ixed transmitters, such as base stations f or 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 f ixed RF transmitters, an
electromagnetic site survey should be considered. If the measured f ield strength in the location in which the
AT235 is used exceeds the applicable RF compliance level above, the AT235 should be observed to verif y
normal operation, If abnormal perf ormance is observed, additional measures may be necessary, such as re-
orienting or relocating the AT235.
(b) Over the f requency range 150 kHz to 80 MHz, f ield strengths should be less than 3 V/m.
D-0128073-C – 2022/05
AT23 5 - Instructions for Use - US
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 AT235, including
cables, than the recommended
separation distance calculated
f rom the equation applicable to
the f requency of the transmitter.
Recommended separation
distance
1 2 ,
d = 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 manuf acturer and d is
the recommended separation
distance in meters (m).
Field strengths f rom f ixed RF
transmitters, as determined by an
electromagnetic site survey, (a)
should be less than the
compliance level in each
f requency range (b)
Interf erence may occur in the
vicinity of equipment marked with
the f ollowing symbol:
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