User guide

Canopy System User Guide Configuring an SM for the Destination
pmp-0229 (Mar 2013)
295
Figure 91: Radio tab of SM, example
In the Radio tab of the SM, you may set the following parameters.
Custom Radio Frequency Scan Selection List
Check any frequency that you want the SM to scan for AP transmissions. The frequency band of
the SM affects what channels you should select.
IMPORTANT!
In the 2.4-GHz frequency band, the SM can register to an AP that transmits on a
frequency 2.5 MHz higher than the frequency that the SM receiver locks when
the scan terminates as successful. This establishes a poor-quality link. To
prevent this, select frequencies that are at least 5 MHz apart.
In a 2.4-GHz SM, this parameter displays all available channels, but has only three recommended
channels selected by default. See 2.4-GHz AP Cluster Recommended Channels on Page 136.
In a 5.2- or 5.4-GHz SM, this parameter displays only ISM frequencies. In a 5.7-GHz SM, this
parameter displays both ISM and U-NII frequencies. If you select all frequencies that are listed in
this field (default selections), then the SM scans for a signal on any channel. If you select only
one, then the SM limits the scan to that channel. Since the frequencies that this parameter offers
for each of these two bands are 5 MHz apart, a scan of all channels does not risk establishment of
a poor-quality link as in the 2.4-GHz band.