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Chapter 3 • Assembling the antenna
22
1037312-0001 Revision A
In this manual, installation software refers to installation,
pointing, and commissioning software accessed through the IDU,
which works in conjunction with SBC.
Before proceeding, use the installation software to determine the
initial values to use for setting azimuth, elevation, and
polarization. Record these values and keep them handy for
reference as you install and point the antenna. To use the
installation software, follow the instructions in the IDU
installation manual for commissioning the IDU.
General instructions for
assembling the antenna
Before you assemble the antenna, read these important
instructions:
• Mast – The mast must be installed before you can install the
antenna. For information on antenna mounting methods, see
the HN System Antenna Site Preparation and Mount
Installation Guide (1035678-0001). The mast must have an
outside diameter of 2-
3
⁄8 inches (2.375 inches).
• Sequence of steps – When you assemble the antenna, follow
the instructions in this chapter in the order they are
presented.
• Tightening hardware– Do not tighten any nuts or other
hardware until you are instructed to do so. (See also the next
item, Torque.)
• Torque – To ensure successful installation of the antenna, you
must tighten all nuts and socket-head cap screws to the
maximum torque values shown in
Table 6. This is a critical
requirement.
For bolts that use a split lock washer, tighten the bolt until the
washer is flattened, but do not tighten the bolt further. When
the washer is flattened, this indicates that sufficient torque
has been applied.
Table 6: Torque specifications
Fastener
Maximum
torque
¼-inch bolts 6 ft-lb
5/16-inch bolts 15 ft-lb
¼-20 thread-cutting screws used to
secure reflector bracket to reflector
10 ft-lb
No. 6-32 and M4 socket-head cap
screws
15 inch-lb