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31
ELECTROMAGNETIC COMPATIBILITY (EMC)
• Guidance and manufacturer’s declaration – electromagnetic emissions
The device is intended for use in the electromagnetic environments listed below, and should only be used in such
environments:
Emissions test Compliance Electromagnetic environment – guidance
RF emissions CISPR 11 Group 1 RF energy is used only to maintain device’s operation.
Therefore, its RF emissions are so low that it’s not likely to
cause any interference in nearby electronic equipment.
RF emissions CISPR 11 Class B
Harmonic emissions IEC 61000-3-2 Not Applicable The device is suitable for use in all establishments,
including domestic establishments, and those directly
connected to the public low-voltage power supply network
that supplies buildings used for domestic purposes.
Voltage fluctuations/ flicker emissions
IEC 61000-3-3
Not Applicable
• Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and should only be used in such environments:
Immunity test IEC 60601 test level Compliance level Electromagnetic environment–guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 8 kV air
Floors should be wood, concrete or ceramic
tile. If floors are covered with synthetic
material, the relative humidity should be at
least 30 %.
Power frequency
(50/60 Hz) magnetic
field IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
• Recommended separation distances between portable and mobile RF communication equipment and the device.
The device is intended for use in an electromagnetic environment where radiated RF disturbances are under control.
User can help prevent electromagnetic interference by keeping the device at a minimum distance from portable and
mobile RF communications equipment (transmitters). Below table details the maximum output power of transmitter:
Rated maximum output
power of transmitter W
Separation distance according to frequency of transmitter m
150 kHz to 80 MHz
Not Applicable
80 MHz to 800 MHz
d = 1.2
800 MHz to 2.5 GHz
d = 2.3
0.01 NA 0.12 0.23
0.1 NA 0.38 0.73
1 NA 1.2 2.3
10 NA 3.8 7.3
100 NA 12 23
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in metres (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 separation distance for 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.
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