62
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment –
guidance
Radiated RF
IEC 61000-4-3
20 V/m
80 MHz to
2.5 GHz
80% 5Hz AM
Modulation
20 V/m
Portable and mobile RF
communications equipment should
be used no closer to any part of the
DDU-2000 Series AED, including
cables, than necessary. The
recommended separation distance
calculated from the equation
applicable to the frequency of the
transmitter is shown in the following
table.
Interference may occur in
the vicinity of equipment
marked with this 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 affected by absorption
and reflection from structures, objects and people.
The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6,765 MHz to 6,795 MHz;
13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70 MHz.
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 DDU-2000 Series AED
is used exceeds the applicable RF compliance level above, the DDU-2000 Series AED should be observed to
verify normal operation. If abnormal performance is observed additional measures may be necessary, such as
reorienting or relocating the DDU-2000 Series AED.
Separation Distances
DDU-2000 Series AEDs are intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of a DDU-2000 Series AED can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
DDU-2000 Series AED as recommended below, according to the maximum output of the communications equipment.
Recommended separation distances between portable and mobile
RF communications equipment and DDU-2000 Series AEDs
Separation distance according to frequency of transmitter
Rated maximum
output power of
transmitter
80 MHz to 800 MHz
d = 1.2√P
800 MHz to 2.5 GHz
d = 2.3√P
0.01 W
0.12 m
0.23 m
0.1 W
0.38 m
0.73 m
1 W
1.20 m
2.30 m
10 W
3.79 m
7.27 m
100 W
12.00 m
23.00 m
Electromagnetic Immunity (continued)
10. Electr
omagnetic
Conf
ormity
DAC-U2510EN-BF rev H
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