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Guidance and manufacturer’s declaration - electromagnetic immunity
The Narcotrend-Compact M is intended for use in the electromagnetic environment specified
below. The customer or the user of the Narcotrend-Compact M 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 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 5.8 GHz
3 Vrms
3 V/m
Portable and mobile RF
communications equipment
should be used no closer to any
part of the Narcotrend-Compact
M, including cables, than the
recommended separation
distance calculated from the
equation applicable to the
frequency of the transmitter.
Recommended separation
distance
d = 1.2
√
P
d = 1.2
√
P 80 MHz to 800 MHz
d = 2.3
√
P 800 MHz to 2.5 GHz
Where P is the maximum output
power rating of the transmitter in
watts according to the transmitter
manufacturer and d is the
recommended separation
distance in meters.
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site survey,
should be less than the
compliance level in each
frequency range.
Interference could 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 might not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects, and people.
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 Narcotrend-Compact M is used exceeds
the applicable RF compliance level above, the Narcotrend-Compact M should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the Narcotrend-Compact M.
Over the frequency range of 150 kHz to 80 MHz, field strengths should be less than 7 V/m.
