Motorola MOTOwi4 Canopy 30, User Manual, Page: 146 / 162

Issue 3.1, July 2006 Page 146 of 162
Warning:
Final tightening of the antenna mountings may cause the antenna alignment to be
altered due to distortion in the mounting bracket caused by tightening. It is recommended that
the installation tone be left turned on (armed) during this process so that any movement can be
noticed and counter acted by tightening the other side of the bracket.
Antenna Cable Fixing
Cables should be secured in place using cable ties, cleats or PVC tape. Care should be taken
to ensure that no undue strain is placed on the connectors on both the Connectorized 30/60
Mbps Backhaul unit and the Antennas and also to ensure that the cables do not flap in the
wind. Cables flapping in the wind are prone to damage and induce unwanted vibrations in the
mast to which the units are attached.
Antenna Connection Weatherproofing
Where a cable connects to an antenna or unit from above, a drip loop should be left to ensure
that water is not constantly channeled towards the connector.
Drip loop
Antenna
Figure 85: Forming a Drip Loop
All joints should be weatherproofed using self-amalgamating tape. It is recommended that a
layer of PVC tape be placed over the self-amalgamating tape to protect the joint while the self-
amalgamating tape cures and give additional protection. Figure 86 shows this diagrammatically
for the Connectorized 30/60 Mbps Backhaul unit end of the antenna cables. If the antenna’s
manufacturer has not supplied guidance on this matter the same technique should be
employed at the antenna end of the antenna cables.