Potential For Electromagnetic Interference; Electromagnetic Compatibility (Emc) - HoMedics BPW-370BT Instruction Manual

POTENTIAL FOR ELECTROMAGNETIC
INTERFERENCE
To avoid inaccurate results caused by electromagnetic interference
between electrical and electronic equipment, do not use the
device near a cell phone or microwave oven. For most wireless
communication devices, it is recommended to maintain a distance of
10.8 feet (3.3m) in order to avoid electromagnetic interference.
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
NOTE: The manufacturer is not responsible for
any radio or TV interference caused by unauthorized modifications to
this equipment. Such modifications could void the user authority to
operate the equipment.
NOTE: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
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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 emissions CISPR 11 Class B
Harmonic emissions IEC Not
61000-3-2 Applicable
Voltage fluctuations/ Not
flicker emissions IEC Applicable
61000-3-3
• 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 Compliance
level level
Electrostatic ± 6 kV contact ± 6 kV contact
discharge (ESD) ± 8 kV air ± 8 kV air
IEC 61000-4-2
Power frequency 3 A/m 3 A/m
(50/60 Hz)
magnetic field
IEC 61000-4-8
• 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 Separation distance according to frequency of transmitter m
output power of
150 kHz to 80 MHz
transmitter W
Not Appicable
0.01 NA
0.1 NA
1 NA
10 NA
100 NA
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.
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.
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.
Electromagnetic environment–
guidance
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 magnetic fields
should be at levels characteristic of
a typical location in a typical com-
mercial or hospital environment.
80 MHz to 800 MHz 800 MHz to 2.5 GHz
d = 1.2 d = 2.3
0.12 0.23
0.38 0.73
1.2 2.3
3.8 7.3
12 23
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