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14.3 Guidance and manufacturer’s declaration-
electromagnetic immunity
Immunity
test
Conducted RF
GB/T17626.6
Radiated RF
GB/T17626.3
3V
（Valid
values）
150kHz
～80MHz
3V/m
80MHz
～2.0GHz
N/A
3V/m
80MHz
～2.0GHz
Test level
Compliance
level
Electromagnetic environment-guidance
The equipment is intended for sue in the electromagnetic environment
specified below. The customer or the user of the equipment should assure
that it is used in such an environment.
Guidance and manufacturer’s declaration-
electromagnetic immunity
Portable and mobile RF communications
equipment should be used to no closer to
any part of the equipment, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
80MHz～800MHz
800MHz～2.0GHz
Where:
—maximum output power rating of the
transmitter in watts(W) according to the
transmitter manufacturer.
d —the recommended separation distance
in metres.
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:
d=1.2
d=2.3
Note 1：At 80MHz and 800MHz, 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 strength from fixed transmitters, such as base stations for radio
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 in the
location in which the equipment is used exceeds the applicable RF compliance
level above, the equipment should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary,
such as re-orienting or relocating the equipment.
b. Over the frequency range 150kHz～80MHz, filed strengths should be less
than 3 V/m
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