Electromagnetic Compatibility (Emc) - Interacoustics AT235 Instructions For Use Manual

5.4 Electromagnetic Compatibility (EMC)

Portable and mobile RF communications equipment can af f ect the AT235. Install and operate the AT235
according to the EMC inf ormation presented in this chapter.
The AT235 has been tested f or EMC emissions and immunity as a standalone AT235. Do not use the AT235
adjacent to or stacked with other electronic equipment. If adjacent or stacked use is necessary, the user
should verif y normal operation in the conf iguration.
The use of accessories, transducers and cables other than those specif ied, with the exception of servicing
parts sold by Interacoustics as replacement parts f or internal components, may result in increased
EMISSIONS or decreased IMMUNITY of the device.
Anyone connecting additional equipment is responsible f or making sure the system complies with the IEC
60601-1-2 standard.
Guidance and manufacturer's declaration - electromagnetic emissions
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.
Emissions Test
RF emissions
CISPR 11
RF emissions
CISPR 11
Harmonic emissions
IEC 61000-3-2
Voltage f luctuations /
f licker emissions
IEC 61000-3-3
Recommended separation distances between portable and mobile RF communications equipment
and the AT235.
The AT235 is intended f or use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the AT235 can help prevent electromagnetic interf erences by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the AT235 as recommended below, according to the maximum output power of the communications
equipment.
Rated Maximum
output power of
transmitter
[W]
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distance d
in meters (m) can be estimated using the equation applicable to the f requency of the transmitter, where P is
the maximum output power rating of the transmitter in watts (W) according to the transmitter manuf acturer.
Note 1 At 80 MHz and 800 MHZ, the higher f requency range applies.
Note 2 These guidelines may not apply to all situations. Electromagnetic propagation is af f ected by
absorption and ref lection f rom structures, objects and people.
D-0128073-C – 2022/05
AT23 5 - Instructions for Use - US
Compliance
Group 1
Class B
Complies
Class A Category
Complies
Separation distance according to frequency of transmitter
[m]
150 kHz to 80 MHz
d = 1.17√����
0.12
0.37
1.17
3.70
11.70
Electromagnetic environment - guidance
The AT235 uses RF energy only f or its internal f unction.
Theref ore, its RF emissions are very low and are not
likely to cause any interf erence in nearby electronic
equipment.
The AT235 is suitable f or use in all commercial, industrial,
business, and residential environments.
80 MHz to 800 MHz
d = 1.17√����
0.12
0.37
1.17
3.70
11.70
800 MHz to 2.5 GHz
d = 2.23√����
0.23
0.74
2.33
7.37
23.30
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