Neurosoft Neuron-Spectrum-61 Technical Manual page 93

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Guidance and manufacturer's declaration – electromagnetic immunity
The digital system is intended for use in the electromagnetic environment specified below. The customer
or the user of the digital system should assure that it is used in such an environment.
Immunity test IEC 60601 test level
Conducted RF 3 Vrms 150 kHz to 80
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
1)
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
digital system is used exceeds the applicable RF compliance level above, the digital system should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the digital system.
2)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
3)
Ensured by PC compliance with IEC 61000-4-6 requirements.
Notes:
1. At 80 MHz and 800 MHz, 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.
Compliance level
MHz outside ISM
1)
bands
3 V/m
80 MHz to 2.5 GHz
Electromagnetic environment -
guidance
Portable and
communications
should be used no closer to
any part of the digital system,
including cables,
the recommended separation
distance calculated
the equation
the frequency
transmitter:

d . 1 17 P
3)
3 V

d . 1 17 P
(80 MHz to 800 MHz),
3 V/m

d . 2 33 P
(800 MHz to 2.5 GHz).
Field strengths from fixed RF
transmitters, as determined
by an electromagnetic site
1)
survey , should be less than
the compliance level in each
frequency range
Interference may occur in the
vicinity of equipment marked
with the following symbol
mobile RF
equipment
than
from
applicable to
of the
2)
.
.
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