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AC40 Electromagnetic Compatibility (EMC)
5.4 Electromagnetic Compatibility (EMC)
Portable and mobile RF communications equipment can affect the AC40 . Install and operate the AC40 according to the EMC information
presented in this chapter.
The AC40 has been tested for EMC emissions and immunity as a standalone AC40 . Do not use the AC40 adjacent to or stacked with other
electronic equipment. If adjacent or stacked use is necessary, the user should verify normal operation in the configuration.
The use of accessories, transducers and cables other than those specified, with the exception of servicing parts sold by Interacoustics as
replacement parts for internal components, may result in increased EMISSIONS or decreased IMMUNITY of the device.
Anyone connecting additional equipment is responsible for making sure the system complies with the IEC 60601-1-2 standard.
Guidance and manufacturer's declaration - electromagnetic emissions
The AC40 is intended for use in the electromagnetic environment specified below. The customer or the user of the AC40 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 fluctuations /
flicker emissions
IEC 61000-3-3
Recommended separation distances between portable and mobile RF communications equipment and the AC40 .
The AC40 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the AC40 can help prevent electromagnetic interferences by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the AC40 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 frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer.
Note 1 At 80 MHz and 800 MHZ, the higher frequency range applies.
Note 2 These guidelines may not apply to all situations. Electromagnetic propagation is affected by absorption and reflection from structures,
objects and people.
Guidance and Manufacturer's Declaration - Electromagnetic Immunity
The AC40 is intended for use in the electromagnetic environment specified below. The customer or the user of the AC40 should assure that it
is used in such an environment.
Immunity Test
Electrostatic Discharge
(ESD)
IEC 61000-4-2
Electrical fast
transient/burst
IEC61000-4-4
Surge
IEC 61000-4-5
Voltage dips, short
interruptions and voltage
variations on power supply
lines
IEC 61000-4-11
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
IEC 60601 Test
level
+6 kV contact
+8 kV air
+2 kV for power supply lines
+1 kV for input/output lines
+1 kV differential mode
+2 kV common mode
< 5% UT
(>95% dip in UT) for 0.5 cycle
40% UT
(60% dip in UT) for 5 cycles
70% UT
(30% dip in UT) for 25 cycles
<5% UT
(>95% dip in UT) for 5 sec
Electromagnetic environment - guidance
The AC40 uses RF energy only for its internal function.
Therefore, its RF emissions are very low and are not likely to cause any
interference in nearby electronic equipment.
The AC40 is suitable for 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
Compliance
+6 kV contact
+8 kV air
+2 kV for power supply lines
+1 kV for input/output lines
+1 kV differential mode
+2 kV common mode
< 5% UT (>95% dip in UT)
for 0.5 cycle
40% UT (60% dip in UT) for
5 cycles
70% UT (30% dip in UT) for
25 cycles
<5% UT
800 MHz to 2.5 GHz
d = 2.23
0.23
0.74
2.33
7.37
23.30
Electromagnetic
Environment-Guidance
Floors should be wood, concrete or
ceramic tile. If floors are covered with
synthetic material, the relative humidity
should be greater than 30%.
Mains power quality should be that of a
typical commercial or residential
environment.
Mains power quality should be that of a
typical commercial or residential
environment.
Mains power quality should be that of a
typical commercial or residential
environment. If the user of the AC40
requires continued operation during
power mains interruptions, it is
recommended that the AC40 be
powered from an uninterruptable power
supply or its battery.
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