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Guidance and manufacturer's declaration – electromagnetic immunity
The NU-IP40S is intended for use in the electromagnetic environment specified below. The customer or the user of the NU-IP40S
should assure that it is used in such an environment.
IEC 60601
Immunity test
test level
Conducted RF
3 Vrms
IEC 61000-4-6
150 kHz to
80 MHz
Radiated RF
3 V/m
IEC 61000-4-3
80 MHz to
2.5 GHz
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 NU-IP40S is used exceeds the applicable RF compliance level above, the NU-IP40S should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the
NU-IP40S.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance level
Portable and mobile RF communications equipment should be
used no closer to any part of the NU-IP40S, including cables, than
the recommended separation distance calculated from the equation
appliance to the frequency of the transmitter.
Recommended separation distance
= 1.2 √
3 Vrms
= 1.2 √
3 V/m
= 2.3 √
Where is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer and is the
recommended separation distance in meters (m).
Field strengths from fixed RF transmitters, as determined by an
electromagnetic site survey,
level in each frequency range.
Interference may occur in the vicinity of equipment marked with
following symbol:
6
Electromagnetic environment – guidance
80 MHz to 800 MHz
800 MHz to 2.5 GHz
a
should be less than the compliance
b
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