User's Manual

1027144–0001 Revision D 6–18 Installing ODUs
RT installation
Obtain a coarse elevation adjustment as follows:
1. Using the boresight for reference, rotate the antenna (by
hand) as shown in figure 6-16 until you can see the HT in
the vertical center of the boresight, with no shadow inside
the top or bottom of the boresight. See figure 6-14.
If the antenna does not rotate freely, loosen each of the
antenna bracket nuts slightly.
(You should not need to use the fine elevation adjuster until
you point the antenna with the voltmeter.)
Figure 6-17 Using the boresight to adjust elevation
T0009009
Adjust
elevation
upward.
Adjust
elevation
downward.
Elevation
properly
adjusted
Boresight
2. When the elevation is properly adjusted, tighten the four
antenna bracket nuts to 16 foot–pounds torque (21.7
Newton–meters). See figure 6-18.
T0009031
Tighten
Tighten
Tighten
Tighten
Antenna bracket
locking nut
Elevation locking nut
(Leave loose for later
adjustment.)
Elevation locking nut
(Leave loose.)
Azimuth locking nut
(Leave loose.)
Azimuth locking nut
(Leave loose.)
Antenna bracket
Figure 6-18 Antenna bracket locking nuts (and other nuts)
At this point, the four antenna bracket locking nuts and the
four mast clamp nuts should be tight (torqued as specified).
Leave the two azimuth locking nuts and two elevation
locking nuts loose, to allow for later adjustments. See figure
6-18.
Coarse elevation
adjustment