45
EMC GUIDANCE
Recommended separation distance:
=
]
[
=
Where is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer and is the
recommended separation distance in metres (m). Field strengths from
fixed RF transmitters, as determined by an electromagnetic site
survey,
a
should be less than the compliance level in each frequency
range.
b
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 [
V
1
] V/m.
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