13
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.
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic environment - guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V RMS outside the
ISM band, 6 V RMS in
the ISM bands
3 V/m
80 MHz to 2.7 GHz
80% AM at 1kHz
3 Vrms
150 kHz to 80
MHz
3 V RMS
outside the
ISM band, 6
V RMS in the
ISM bands
3 V/m
80 MHz to 2.7
GHz
80% AM at
1kHz
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:
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.
TECHNICAL SPECIFICATIONS
