Fukuda Denshi FX-7302, Service Manual

Page: 158 / 162

Chapter 8
8 - 4
Immunity information (to radiation/conduction)
The following is a declaration related to the electromagnetic immunity of
the equipment.
Guidance and declaration by manufacturer – Electromagnetic emission – Other than life support system
The equipment is intended to be used in the electromagnetic environment designated below.
Client or user of the equipment is requested to confirm the equipment will be operated in such
environment.
Immunity test
IEC 60601
test level
Conformity
level
Guidance for electromagnetic
environment
Conducted RF.
IEC 61000-4-6
Radiated RF.
IEC 61000-4-3
3V
RMS
150kHz to
80MHz
3V/m
80MHz to
2.5GHz
3V
3V/m
Any of portable and mobile RF
communication devices must not be
used within the recommended distance
of separation from any part of the
equipment as calculated by an
equation corresponding to the
transmitter frequency.
Recommended distance of separation
P d 2 . 1
=
P d 2 . 1
=
80MHz ∼ 800MHz
P d 3 . 2
=
800MHz ∼ 2.5GHz
where P is the rated output power in W
of the transmitter specified by its
manufacturer, and d is the recommended
distance of separation in m.
The electric field intensity from fixed
RF transmitter determined by an
investigation of field electromagnetism
(a)
must be lower than the conformity
level at each frequency band
(b)
.
Interference may occur in the vicinity
of a device where the following symbol
is indicated.
Note 1. In case of 80 MHz and 800 MHz, apply a high frequency range.
Note 2. The guideline does not apply to all circumstances. The electromagnetic diffusion is affected by reflection and absorption by structure, thing and
person.
a. It is impossible to accurately and theoretically estimate the electric field intensity from a stationary sending station such as radio telephone base station
(cord-less), local portable radio station, amateur radio station, AM/FM radio broadcasting station and TV base station. For correctly judging the environment
of electromagnetism due to stationary RF sending station, proceed to a field electromagnetism investigation. If the electric field intensity recorded at a site
where the equipment is used exceeds the above applied RF conformity level, watch the equipment to verify whether it operates properly or not. If its
operation is found abnormal, the equipment may have to be modified to match, be moved to another place or be subjected to supplementary means.
b. The electric field intensity must be 3 V/m or less over the entire frequency band of 150 MHz to 80 MHz.
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(( ・ ))
)