TracVision C3, Руководство по установке

Страница: 18 / 24

19
Follow the steps below to set the antenna’s LNB
to the skew angle you determined in
“Find the
Skew Angle” on page 18 .
a. Turn off the antenna and disconnect vessel
power.
b. Using a 9/64" allen wrench, loosen the two
LNB bracket screws securing the LNB in the
following manner: loosen one screw one full
turn, then loosen the second screw one full
turn; repeat until the LNB can be rotated
freely (see Figure 31).
c. Rotate the LNB to align the skew arrow with
the skew angle that you determined in the
previous step (see Figure 31).
d. Alternate tightening each screw until the
LNB no longer rotates.
e. Tighten the screws one additional 1/4 turn.
f. Reinstall the radome using the eight screws
and washers you removed in “Remove the
Mounting Plate” on page 5 (see Figure 32).
g. Restore power to the TracVision system.
Figure 31: LNB Bracket Assembly
LNB Bracket
Screws
LNB
LNB
Bracket
SKEW
-20˚ Skew
Negative
Skews
Positive
Skews
Be sure to alternate loosening or tightening
the LNB bracket screws. Failure to do so
might cause unequal pressure on the LNB,
which can impair reception.
IMPORTANT!
Figure 32: Radome Screws and Washers
Radome
Screw and
Washer (x8)
Baseplate
Set the Skew Angle 16
Linear Only