Xirrus XR-520H Quick Installation Manual - page 17
XR520H Quick Installation Guide
interference to radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or more of the
following safety measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced wireless technician for help.
Use of a shielded twisted pair (STP) cable must be used for all Ethernet connections in order to
comply with EMC requirements.
FCC Caution: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate this equipment.
FCC-Specific Instructions
The FCC, National Telecommunications and Information Administration (NTIA), Federal
Aviation Administration (FAA), and industry are working to resolve interference to Terminal
Doppler Weather Radar (TDWR) systems used near airports that has occurred from some
outdoor wireless systems operating in the 5470 MHz – 5725 MHz band. These wireless devices
are subject to Section 15.407 of our rules and while operating as a master device they are
required to implement radar detection and Dynamic Frequency Selection (DFS) functions.
Devices must be professionally installed when operating in the 5470 – 5725 MHz
band
Any installation of either a master or a client device within 35 km of a TDWR
location shall be separated by at least 30 MHz (center-to-center) from the TDWR
operating frequency (as shown in the TDWR location at
http://www.spectrumbridge.com/udia/home.aspx). This will require that channel
116 is not used in these locations.
The installers and the operators must register the devices in the industry-sponsored
database with the appropriate information regarding the location and operation of
the device and installer information. A voluntary Wireless Internet Service
Providers Association (WISPA) sponsored database has been developed that allows
operators and installers to register the location information of the Unlicensed
National Information Infrastructure (UNII) devices operating outdoors in the 5470 –
5725 MHz band within 35 km of any TDWR location (see
http://www.spectrumbridge.com/udia/home.aspx). This database may be used by
government agencies to expedite resolution of any interference to TDWRs.
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