Hughes AN8-098P, Руководство по установке

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Chapter 3 • Installing the antenna and radio assembly
1037750-0001 Revision A
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5. Insert two Allen screws into the collar and tighten to secure
the feed horn in place.
6. At this point, fully tighten any hardware that is not
tight—however, leave nuts that are used for pointing
adjustments slightly loose or just snug.
Installing the antenna
assembly onto
the mast pipe
Follow these steps to mount the antenna assembly onto the mast:
1. Before you install the antenna assembly onto the mast pipe,
use a bubble level to make sure that the mast is plumb.
Check the mast at two perpendicular locations, as shown in
Figure 26.
NOTICE
You must assemble the collar exactly as described above and as
shown in Figure 25 before fully assembling the collar. Failure to
do so will result in damage to the polarizer waveguide.
Note: It is critical that the antenna mast is plumb. It is
impossible to adjust the antenna to correct for a mast that is
not plumb.
Figure 26: Making sure the mast is plumb
T0144012
Top view
To make sure the mast is
plumb, check with the level
in two positions at right
angles to each other.
Level
Mast
2nd level
position
Mast
Bubble must be centered
between marks.
Bubble
level
Side view