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Guidance and manufacturer’s declaration – electromagnetic immunity
The SIH21/2 is intended for use in the electromagnetic environment specified below. The customer or the
user of the SIH21/2 should assure that it is used in such an environment
Immunity test EN 60601
test level
Compliance
level
Electromagnetic environment – guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
3 V
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the SIH21/2, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter.
where p is the maximum output power rating
of the transmitter in watts (W) according to the
transmitter manufacturer and d is the recom-
mended separation distance in metres (m)
Field strengths from fixed 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 equip-
ment 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 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 SIH21/2 is used
exceeds the applicable RF compliance level above, the SIH21/2 should be observed to verify normal opera
-
tion. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or
relocating the SIH21/2.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
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