E
7
Table 3
Guidance and manufacturer’s declaration-electromagnetic immunity
CF-VCBU11U is intended for use in the electromagnetic environment speci
fi
ed below. The
customer or user of the CF-VCBU11U should assure that is used in such an environment.
Immunity test
IEC60601 test
level
Compliance
level
Electromagnetic environment-
guidance
Conducted RF
IEC61000-4-6
Radiated RF
IEC61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V
3 V/m
Portable and mobile RF
communications equipment should be
used no closer to any part of the Model
CF-VCBU11U, including cables, than
the recommended separation distance
calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance:
d
= 1.2
√
P
d
= 1.2
√
P
80 MHz to 800 MHz
d
= 2.3
√
P
800 MHz to 2.5 GHz
Where
P
is the maximum output power
rating of the transmitter in watts
according to the transmitter
manufacturer and
d
is the
recommended separation distance in
meters.
Field strengths from
fi
xed RF
transmitters, as determined by an
electromagnetic site survey *
1
, should
be less than the compliance level in
each frequency range. *
2
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
effected by absorption and re
fl
ection from structures, objects and people.
*
1
Field strengths from
fi
xed 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
fi
xed RF transmitters, an electromagnetic site survey should be
considered. If the measured
fi
eld strength in the location in which the Model CF-VCBU11U is
used exceeds the applicable RF compliance level above, the Model CF-VCBU11U should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the Model CF-VCBU11U.
*
2
Over the frequency range 150 kHz to 80 MHz,
fi
eld strengths should be less than 3 V/m.
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2008/08/26 14:14:45
2008/08/26 14:14:45