Rehan Electronics i-Pulz, Руководство пользователя

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Guidance and Manufacturer’s declaration-electromagnetic immunity
continued
a
b
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 theore-
tically with accuracy. To assess the electromagnetic environment due to
fixed RF transmitters, an electromagnetic site survey should be conside-
red. If the measured field strength in the location in which the i-Pulz (ES-2)
is used exceeds the applicable the applicable RF compliance level above,
the i-Pulz (ES-2) should be observed to verify normal operation. If abnor-
mal performance is observed, additional measures may be necessary,
such as re-orienting or elocating the i-Pulz (ES-2).
Over the frequency range 150 kHz to 80 MHz, field strengths should be
less than 3 V/m.
9.5 Recommended separation distance
Recommended separation distance between portable and mobile
RF communications equipment and the i-Pulz (ES-2)
The i-Pulz (ES-2) is intended for use in the electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the i-Pulz (ES-2)
can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the
i-Pulz (ES-2) as recommended below.
Rated maximum
output power of
transmitter W
Separation distance according to frequency of transmitter m
150 kHz to 80 MHz
d =1,2 √P
80 MHz to 800 MHz
d =1,2 √P
800 MHz to 2,5
GHz
d =2,4 √P
0.01 0.12 0.12 0.24
0.1 0.38 0.38 0.76
1 1.2 1.2 2.4
10 3.8 3.8 7.6
100 12 12 24
For transmitters rated at a maximum output power not listed above, the recommen-
ded separation distance d in meters (m) can be estimated using the equation applica-
ble to the frequency of the transmitter, where P is the maximum output power rating
of the transmitter in watt (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 propaga-
tion is affected by absorption and reflection from structures, objects and people.