Fona Aquamarine, Руководство по эксплуатации

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70
Aquamarine
1. The higher frequency range applies at 80 MHz and 800 MHz.
2. 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. An investigation of the location is
recommended to determine the electromagnetic environment
resulting from stationary HF transmitters. If the measured field
strength in the location in which the UNIT is used exceeds the
applicable RF compliance level above, the UNIT should be observed
to verify normal operation. If unusual performance characteristics are
observed, it may be necessary to take additional measures such as
reorientation or repositioning of the UNIT.
3. Over the frequency range 150kHz to 80MHz, field strengths should
be less than 3V/m.
Conducted RF
interference
IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
1
3 V
eff
d= [1.2] √ P
Radiated RF
interference
IEC 61000-4-3
3 V/m
80 MHz to 800 MHz
1
3 V/m
800 MHz to 2.5 GHz
1
3 V
eff
3 V
eff
d= [1.2]
√
P
at 80 MHz to 800 MHz
d= [2.3]
√
P
at 800 MHz to 2.5 GHz
where
P
is the nominal transmitter
output in watts (W) specified by the
transmitter manufacturer and
d
is the
recommended working clearance in
meters (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey
2
should
be less than the compliance level
3
in
each frequency range.
Interference is possible in the vicinity
of equipment bearing the following
graphic symbol.
Interference
immunity tests
IEC 60601-1-2 test level Compliance level Electromagnetic environment –
guidance