User's Manual

VOLUME III, CHAPTER 2, ODU INSTALLATION
Task Required con-
siderations
Explanation
Cable grounding Ensure the cable is grounded in accordance with the
instructions provided in ODU Cable Grounding on
page 60.
Ice-fall protection Ensure adequate physical protection for the cable
where ice-fall from towers can occur.
ODU Cable Grounding
Ground kits are included in the ODU Cable Kits. Or they can be purchased indi-
vidually.
For tower/mast installations the ODU cable must be grounded at:
l The point where it comes on to the tower from the ODU
l The point where it leaves the tower to go to the equipment building
l Not more than 25m (80 ft) intervals on the tower if the height on the tower
exceeds 50m (165ft)
l A point just prior to building entry.
Cable ground connections onto the ODU cable must be correctly weatherproofed to
ensure there is no possibility of water entry into the cable jacket. Weatherproofing
instructions are provided with the cable ground kits. Otherwise, refer to Weather-
proofing on page 69.
If the building-end lightning surge arrestor is installed prior to the cable entering the
building, the ground kit must be installed on the tower side of the arrestor. See ULA
Installed Inside on page 67.
The figure below shows typical tower locations for cable grounding and lightning
surge arrestors. Note that an external arrestor is shown at the ODU end - this is not
required for ODU 600 unless specified by the operator.
At non-standard installations, such as building tops or the sides of buildings, follow
the same general guidelines but where proper grounding points are not provided
these must first be installed. Refer to Aviat Networks Best Practices Guide.
60 AVIAT NETWORKS