Motorola 5440AP - Canopy 5.4 GHz AP, Дополнение к руководству пользователя, Страница: 19 / 40

Canopy 400 Series OFDM AP and SM User Guide
Version 1, April 2008 Page 19 of 40
4.4.1 Background and Operation
The modules use region-specific DFS based on a new “Region Code” selected on the module’s
“Configuration => General” page. By directing installers and technicians to set the Region Code
correctly, the operator gains confidence the module is operating according to national or regional
regulations, without having to deal with the details for each region.
Available “Region Codes” include Other, United States, Canada, Europe, Brazil, Russia, and
Australia. Operators in regions or countries not listed and with no requirements for DFS should
use the “Other” Region Code.
New APs from the factory will show a Region Code of “None”, and will not transmit until the
Region Code is set to a value other than “None”.
For the US, the DFS in Release 8.4, the initial Canopy 400 Series release, meets FCC Report
and Order 03-287. For Canada, the DFS meets Industry Canada requirements. In the US,
Canada, and Australia, DFS applies only to APs.
For countries of the European Union and Brazil, the DFS in Release 8.4 meets ETSI EN 301 893
v1.3.1. In these regions, DFS applies to APs and SMs.
Canada and, for new equipment, Europe have requirements to avoid certain frequencies used by
some weather radar. To meet this requirement, modules set to a Region Code of Canada or
Europe will display the center channel frequencies shown in Table 2 on page 12 on the AP’s
Carrier Frequency pop-up and on the SM’s Frequency Scan Selection List.
Table 4 shows the details of DFS operation and channels available for each Region Code.
Table 4: Release 8.4 Operation based on Region Code
5.4 GHz
Region Code
1
AP SM
Center Channel
Frequencies Available
2
(MHz)
United States FCC/IC DFS No effect 5480 - 5710
Canada FCC/IC DFS No effect 5480 – 5595, 5655 - 5710
Europe ETSI DFS ETSI DFS 5475 - 5595, 5655 - 5715
Brazil ETSI DFS ETSI DFS 5475 - 5715
Australia FCC/IC DFS No effect 5480 – 5595, 5655 - 5710
Russia NA NA 5480 - 5710
Other No effect No effect 5480 - 5710
1. In all cases, set the Region Code to the region you are in, and the
equipment will provide DFS consistent with that regions’s regulations.
For countries or regions not listed, use a Region Code that provides DFS
functionality and channels consistent with your country’s regulatory
requirements.
2. In some countries and regions, 5600 MHz to 5650 MHz is “notched” out to
meet requirements to not transmit in weather radar frequencies.
After an AP with DFS boots, it performs a channel availability check on its main carrier frequency
for 1 minute, monitoring for the radar signature, without transmitting. If no radar signature is