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Guidance and manufacture's declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer or
the user of the device should assure that it is used in such an environment.
Compliance
Immunity test IEC 60601 test level
level
3 Vrms
150 kHz to 80 MHz
3 V RMS outside the
ISM band, 6 V RMS
in the ISM and
amateur bands
Conducted RF
Not
80% AM at 1kHz
IEC 61000-4-6
applicable
Radiated RF
10 V/m
10 V/m
IEC 61000-4-3
80 MHz to 2.7 GHz
80 MHz to
80% AM at 1kHz
2.7 GHz
80% AM at
1kHz
NOTE 1
At 80 MHz and 800 MHz, 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.
A
Field strengths from fixed transmitters, such as base stations for 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 fixed RF transmitters, an electromagnetic
site survey should be considered. If the measured field strength in the location in which the device is used
exceeds the applicable RF compliance level above, the device should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such as re-orienting or
relocating the device.
B
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic environment - guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the device,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
d=0.35√p
d=1.2√p
80MHz to 800MHz：
d=1.2√p
800MHzto 2.7GHz：
d=2.3√p
Where, P is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance.
Field strengths from fixed RF transmitters, as determined
by an electromagnetic site survey, should be less than
the compliance level in each frequency range.
Interference may occur in the vicinity of equipment
marked with the following symbol:
Guidance and manufacture's declaration – electromagnetic emission
The device is intended for use in the electromagnetic environment specified below. The customer of the
user of the device should assure that it is used in such an environment.
Emission test
Compliance
Electromagnetic environment – guidance
The device use RF energy only for its internal function.
RF emissions
Therefore, its RF emissions are very low and are not likely to
Group 1
CISPR 11
cause any interference in nearby electronic equipment.
RF emission
Class B
CISPR 11
The device is suitable for use in all establishments, including
domestic establishments other than domestic and those directly
Harmonic emissions
Not applicable
connected to the public low-voltage power supply network that
IEC 61000-3-2
supplies buildings used for domestic purposes.
Voltage fluctuations/
flicker emissions
Not applicable
IEC 61000-3-3
Recommended separation distances between
portable and mobile RF communications equipment and the device
The device is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the device can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the device as recommended below, according to the maximum output power of the
communications equipment.
Separation distance according to frequency of transmitter (m)
Rated maximum output
power of transmitter
(W)
150 KHz to 80 MHz
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.
80 MHz to 800 MHz
800 MHz to 2.7 GHz
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