User guide

Canopy System User Guide Using Jitter to Check Received Signal
Quality (FSK Only)
pmp-0229 (Mar 2013)
131
Operators with 5.4-GHz APs or BHMs set to a Region Code of United States are well-served
to ensure they are not using any of the unavailable channels before upgrading. Operators may need
to perform channel planning and coordinated change of the transmitting channel on APs or BHMs
before the upgrade.
CAUTION!
Before upgrading a P10 or P11 5.4-GHz FSK AP or BHM with a
Region Code of United States to Release 9.5, ensure that it is not
configured with a center channel of 5590 through 5660 MHz.
Before upgrading a 5.4-GHz OFDM AP or BHM with a Region Code of
United States to Release 9.5, ensure that it is not configured with a
center channel of 5600 through 5650 MHz.
If an affected AP or BHM is inadvertently left set to one of these center channels before
upgrading, after the upgrade it will not have an operating Radio Frequency Carrier
configured, will not transmit, and there will be no link or service to SMs or a BHS. To recover
after the upgrade, configure the Radio Frequency Carrier of the AP or the BHM to an
available channel – one displayed on the AP’s or BHM’s Configuration => Radio page.
Similarly, if the Alternate Frequency Carrier 1 or Alternate Frequency Carrier 2 is
inadvertently left set to one of these center channels, the alternate frequencies will not be available
in the case of a DFS event.
The Custom Frequency Scan List on SMs and BHSs set to a Region Code of United
States is not affected. Since the center channel frequencies listed in Table 5 will not be used (the
AP or BHM won’t be transmitting on them) operators may want to disable scanning of these
frequencies by the SMs and BHSs to reduce scan time.
Using Jitter to Check Received Signal Quality
(FSK Only)
The General Status tab in the Home page of the SM and BHS displays current values for Jitter,
which is essentially a measure of interference. Interpret the jitter value as indicated in Table 31.