Fetal Monitor FC-700 Operating Manual
Guidance and manufacturer’s declaration - electromagnetic immunity
The FC-700 system is intended for use in the electromagnetic environment specified
below. The customer or the user of the FC-700 system should assure that it is used in such
an environment
Electromagnetic
environment -guidance
Conducted RF
IEC 61000-4-6
FC-700 system must be used
only in a shielded location
with a minimum RF shielding
effectiveness and, for each
cable that enters the
shielded location with a
minimum RF shielding
effectiveness and, for each
cable that enters the
shielded location
Radiated RF
IEC 61000-4-3
3 V/m
80.0 MHz to 2.5 GHz
3 V/m
80.0 MHz to 2.5 GHz
Field strengths outside the
shielded location from fixed
RF transmitters, as
determined by an
electromagnetic site survey,
should be less than 3V/m.a
Interference may occur in
the vicinity of equipment
marked with the following
symbol:
Note 1) These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
Note 2) It is essential that the actual shielding effectiveness and filter attenuation of the shielded
location be verified to assure that they meet the minimum specification.
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 outside the shielded location in which the EUT is used exceeds 3V/m,
the EUT should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such as relocating
the EUT or using a shielded location with a higher RF shielding effectiveness and filter attenuation.
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