User Guide

Compliance with radio regulations Reference information
4-14
pmp-0047 (December 2012)
On the AP, the Home => DFS Status” page shows current DFS status of all three frequencies and a DFS log of past
DFS events.
Figure 27 AP DFS Status
Background and Operation
The modules use region-specific DFS based on the Country Code selected on the module’s Configuration, General
page. By directing installers and technicians to set the Country 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.
Some regions have requirements to avoid certain 5.4-GHz frequencies used by some weather radar. To meet this
requirement, modules set to Europe will display the center channel frequencies shown in Table 38 on page 4-16 on
the AP’s Carrier Frequency pop-up and on the SM’s Frequency Scan Selection List.
Table 37 on page 4-15 shows the details of DFS operation and channels available for each Country Code, including
whether DFS is active on the AP, SM, which DFS regulation apply, and any channel restrictions. DFS does not
apply to 4.9 GHz.