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11. 5 ELECTROMAGNETIC IMMUNITY
2. Electromagnetic Immunity
IMMUNITY TEST
EN60601 TEST
LEVEL
COMPLIANCE
LEVEL
ELECTROMAGNETIC
ENVIRONMENT-GUIDANCE
Conducted Field
Intensity
EN 60601-1-2:2007
IEC61000-4-6:2008
Radiated
Radio-Frequency Field
Intensity
EN 60601-1-2:2007
IEC61000-4-3:2006
+A1:2007+A2:2010
3Vrms
150kHz to 80MHz
3Vrms
80MHz to 2.5GHz
3Vrms
150kHz to 80MHz
3Vrms
80MHz to 2.5GHz
Portable
and
mobile
RF
communications device should be
used no closer to any part of Osada
Apit 11, including cables, than the
recommended separa- tion distance
calculated
from
the
equation
applicable to the frequency of the
transmitter.
Recommended separation distance
d = 1.2 √P
d = 1.2 √P
80MHz to 800MHz
d = 2.3 √P
800MHz to 2.5GHz
where
P
is the maximum output
power rating of the transmitter in
watts
(W)
according
to
the
transmitter manufacturer and
d
is the
recommended separation distance in
meters (m).
Field strengths from fixed RF trans-
mitters, as determined by an electro-
magnetic site survey, should be less
than the compliance level in each
frequency range.
Interference may occur in the vicinity
of device marked with the following
symbol:
(1) At 80 MHz and 800MHz, the higher frequency range applies.
(2) These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
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 in the location in which
the OSADA APIT 11 is used exceeds the applicable RF compliance level above, the OSADA APIT 11
should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
11 REFERENCE