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Guidance and manufacturer’s declaration – electromagnetic immunity
The Model Smart Alert System is intended for use in the electromagnetic environment specified below.
The customer or the user of the Model Smart Alert remote should assure that it is used in such an environment.
Electromagnetic environment – guidance
Portable and mobile RF communications equipment should be used no closer to any part of the
Model Smart Alert remote, 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
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601 test level
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
Compliance level
3 V
3 V/m
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 meters (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 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 Model Smart Alert remote is used exceeds the applicable RF compliance level above,
the Model Smart Alert remote should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the Model Smart Alert remote.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.