Table 3
Guidance and manufacturer’s declaration – electromagnetic immunity
The SBC 25 is intended for use in the electromagnetic environment specifi ed below. The customer or the user of the SBC 25 should assure
that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment – guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 V
rms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
Not
applicable
3 V/m
Portable and mobile RF communications equipment should be used no closer to any part
of the SBC 25, including cables, than the recommended separation distance calculated
from the equation applicable to the frequency of the transmitter.
Recommended separation distance:
d
= 1.2
80 MHz to 800 MHz
d
= 2.3
800 MHz to 2.5 GHz
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 metres (m).
Field strengths from fi xed RF transmitters, as determined by an electromagnetic site
survey,
a
should be less than the compliance level in each frequency range.
b
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 aff ected by absorption and refl ection from structu-
res, objects and people.
a
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 envi-
ronment 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 SBC 25 is used exceeds the applicable RF compliance level above, the deivce should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the SBC 25.
b
Over the frequency range 150 kHz to 80 MHz, fi eld strengths should be less than 3 V/m.
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