Chapter 1: Product description
Important regulatory information
Page 5
External antennas
When using a connectorized version of the product, the conducted transmit power may need to be
reduced to ensure the regulatory limit on transmitter EIRP is not exceeded. The installer must have
an understanding of how to compute the effective antenna gain from the actual antenna gain and
the feeder cable losses.
The range of permissible values for maximum antenna gain and feeder cable losses are included
in this user guide together with a sample calculation. The product GUI automatically applies the
correct conducted power limit to ensure that it is not possible for the installation to exceed the
EIRP limit, when the appropriate values for antenna gain and feeder cable losses are entered into
the GUI.
Avoidance of weather radars (USA only)
To comply with FCC rules (KDB 443999: Interim Plans to Approve UNII Devices Operating in the
5470 - 5725 MHz Band with Radar Detection and DFS Capabilities), units which are installed within
35 km (22 miles) of a Terminal Doppler Weather Radar (TDWR) system (or have a line of sight
propagation path to such a system) must be configured to avoid any frequency 30 MHz or
–30 MHz of the frequency of the TDWR device.
This requirement applies even if the master is
outside the 35 km (22 miles) radius but communicates with outdoor clients which may be within
the 35 km (22 miles) radius of the TDWRs. If interference is not eliminated, a distance limitation
based on line-of-sight from TDWR will need to be used. Devices with bandwidths greater than 20
MHz may require greater frequency separation.
When planning a link in the USA, visit
http://spectrumbridge.com/udia/home.aspx
, enter the
location of the planned link and search for TDWR radars. If a TDWR system is located within 35 km
(22 miles) or has line of sight propagation to the PTP device, perform the following tasks:
Register the installation on
http://spectrumbridge.com/udia/home.aspx
.
Make a list of channel center frequencies that must be barred, that is, those falling within
+30 MHz or –30 MHz of the frequency of the TDWR radars.
The 450 Platform Family AP must be configured to not operate on the affected channels.
Canada specific information
Caution
This device complies with ISEDC ’s license-exempt RSSs. Operation is subject to the
following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause
undesired operation of the device.
ISEDC requires manufacturers to implement special features to prevent interference to weather
radar systems that operate in the band 5600 MHz to 5650 MHz. These features must be
implemented in all products able to operate outdoors in the band 5470 MHz to 5725 MHz.
Summary of Contents for PMP 450 Series
Page 125: ...Chapter 3 System planning Typical deployment Page 3 3 Figure 37 Wall installation...
Page 126: ...Chapter 3 System planning Typical deployment Page 3 4 Figure 38 Roof installation...
Page 127: ...Chapter 3 System planning Typical deployment Page 3 5 Figure 39 GPS receiver wall installation...
