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 Smart One® is used exceeds the applicable RF compliance level above, the Smart One® should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Smart One®.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [3] V/m.
Recommended separation distances between
portable and mobile RF communications equipment and the Smart One®
The Smart One® is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the Smart One® can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Smart One® as recommended
below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d=[ 3.5 ] √P
V
1
80 MHz to 800 MHz
d=[ 3.5 ] √P
E
1
800 MHz to 2,5 GHz
d=[ 7 ] √P
E
1
For transmitters rated at a maximum output power not listed above, the recommended separation distance d inmetres (m) can be estimated using the equation applicable to the frequency
of the transmitter, where P is themaximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
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