User's Manual

March 1, 2002 Page E5
Figure E3 ODU Bracket Detail
Ground the antenna to the metallic mounting structure (tower or monopole) or suitable rooftop
ground point per local codes and installation practices. Normally #6 AWG or larger wire is
utilized for this purpose. A ¼-20 ground bolt is provided on the bottom flange of the ODU
assembly to attach the ground wire
3
. This is illustrated in Figure E3.
Bundle the three cables (2 x RG-6, power/telemetry) with suitable (UV rated) tie wraps and
secure to the mounting structure in a manner to prevent rainwater from flowing down the cable
and into the cable access opening in the rear weather cap. Figure E4 illustrates a typical
installation. Be certain to provide a drip loop of cable bundle is routed upward.
In the case of a single sector, single ARCi headend installation, route the bundle of three cables
to the hub indoor equipment room. Take care to leave suitable drip loops and bond the shields
of the RG-6 and power/telemetry cables to ground per local codes and installation practices.
If the hub site is multi-sector (two or more collocated ARCi hub ODUs), route the bundle of
three cables to the ARCi outdoor junction box (OJB). Refer to the
OJB Schematic Diagram and
Installation Details
.
3
In the very early beta versions of the ARCi ODU the ground bolt is not present. In that case, the ground lead can
be attached to the 5/16 inch mounting bolt.
Ground Lead