marsden M-999, Руководство пользователя, Страница: 16 / 20

Radiated RF IEC 61000-4-3
3 V/m 80MHz
to 2,5 GHz
3 V/m
Recommended
separation distance:
d = 1,2 √
P
d = 1,2 √
P
80MHz to
800 MHz
d = 2,3 √
P
800MHz
to 2,5 GHz
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 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:
NOTE1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE2 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 MEDICAL SCALE
M-999 is used exceeds the applicable RF compliance level above, the MEDICAL SCALE
M-999 should be observed to verify normal operation. If abnormal performance is
observed, additional measures my be necessary, such as re-orienting or relocating the
MEDICAL SCALE M-999.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be les than 3 V/m.
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