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Guidance and manufacturer's declaration - electromagnetic immunity
The ERK-9000 is intended for use in the electromagnetic environment specified below. The customer or the user of
the ERK-9000 should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment - guidance
Conduted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3Vrms
150kHz to 80MHz
3V/m
80MHz to 2,5GHz
3Vrms
(V1=3)
3V/m
(E1=3)
Portable and mobile RF communications
equipment should be used no closer to any
part of the ERK-9000, including cables, than
the recommended separation distance
calculated
from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
d=1.2 root(P)
d=1.2 root (P) 80MHz to 800MHz
d=2.3 root (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
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
equipment marked with the following symbol:
NOTE 1 At 80MHz and 800MHz, 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 ERK-9000 is used exceeds the
applicable RF compliance level above, the ERK-9000 should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the ERK-9000.
b Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.
