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AN-80i
Installation Guidelines
70-00073-01-08-b
Proprietary Redline Communications © 2011
Page
54
of 58
May 27, 2011
When the alignment is complete, tighten each bolt in a cross-pattern to minimize shifts in
the antenna alignment. Tighten all bolts to the recommended torque.
Note: A metal tower will affect the accuracy of a magnetic compass. Magnetic
declination (the difference between true North and Magnetic North) must also be taken
onto account.
3.6.7
Installation Procedure for DFS-Enabled Systems
Important: DFS Settings
Where DFS is required by regional regulations, this function is permanently enabled at
the factory and can not be disabled by the installer or end-user.
When installing the AN-80i system in regions that require DFS to be enabled, antenna
alignment may be interrupted by false DFS triggering. DFS events can disable AN-80i
transmissions for up to 30 minutes (Tx Off) or disable transmissions for one minute and
change the RF frequency (Chg Freq). While the DFS feature cannot be disabled at any
time during system operation, the following procedure is recommended to minimize the
effects of the false triggering while aligning antennas for a single PTP link.
Summary
In step 1, the PTP Master provides an RF reference while antenna adjustments are
made to the PTP Slave operating with the radio disabled. Operating the PTP Slave in
listen-only mode while adjusting the antenna avoids false DFS triggering due to rapid
changes in RF signal strength seen at the Master unit. In step 2, the Master/Slave
configuration is reversed to allow alignment of the remote end system antenna.
Step A -- Align Site A Antenna
a) Go to the location where the AN-80i is operating as a PTP Slave -- this is the Site A.
b) Login to the remote PTP Master (Site B) and adjust the parameters to match the Site
B settings in Table 15: Configuration - Settings for Antenna Alignment (DFS) - Step 1
and save changes.
c) Login to the local PTP Slave and adjust the parameters to match the Site A settings in
Table 15: Configuration - Settings for Antenna Alignment (DFS) - Step 1 and save these
changes. The wireless link will be lost, but the AN-80i will monitor the RF signals.
Table 15: Configuration - Settings for Antenna Alignment (DFS) - Step 1
Setting
Site A
Site B
System Mode
PTP Slave
PTP Master
DFS Action
Chg Freq
Chg Freq
Auto Scan
(Enabled)
N/A
Radio Enable
(Disabled)
(Enabled)
ATPC
(Disabled)
(Disabled)