Verint Nextiva S1100, Руководство пользователя

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2: System and RF Planning
18 Verint Video Intelligence Solutions
Interference
In most countries, the 2.4 GHz band is not regulated by a government agency; this absence
of frequency coordination can result in interference between various systems. For instance,
if a link with an RF line of sight is subject to excessive video delay and very low frame rate
(or possibly breakdown of video images), it could be due to interference. Fortunately, you
have ways of adapting your setup to avoid interference:
„
RF channel selection—The S1100 has 11 or 13 channels to choose from. In case of
interference, it is recommended to change channel until you find a clean one.
„
Antenna selection—Replacement of the integrated antenna by a higher gain one can
significantly lower the interference from other radio systems. Replace the antenna if
switching channels does not correct the problem or if all channels must be used to
colocate several systems.
There should not be any interference in the 4.9 GHz band, since it is a licensed band with
limited usage to public safety.
The 5 GHz band is less cluttered than the 2.4 GHz band, resulting in less potential
interference from other wireless systems.
RF Exposure Considerations
In order to comply with the RF exposure requirements of CFR 47 part 15 in North America,
the devices must be installed in such a way as to allow a minimum separation distance of
12 inches (30 cm) between antennas and persons nearby.