Set The Lnb Skew Angle - KVH Industries M7 Installation Manual

16

Set the LNB Skew Angle

This step does not apply to linear systems with
Auto Skew capability.
Follow these steps to set the antenna's linear LNB
to the skew angle you noted earlier.
a. Turn off and unplug the receiver(s) and
disconnect antenna power at the switchplate.
Disconnect power from the antenna and the
receivers before you adjust the LNB. The
antenna's moving parts can cause injury.
b. Remove the antenna's radome, if you
reinstalled it earlier in Step 8.
c. Locate the LNB on the back of the antenna's
reflector (see Figure 39).
d. Using a 2 mm allen hex key, loosen the two
M4 socket set screws on the LNB choke feed.
These screws secure the LNB in place.
e. Adjust the LNB clockwise or counter-
clockwise until the skew arrow on the LNB
points to the skew angle you noted earlier
(see Figure 40).
IMPORTANT!
Be sure to keep the LNB fully inserted into the
choke feed to ensure optimum performance.
f. Tighten the two M4 socket set screws to
secure the LNB in place. Apply 9 in-lbs
(1 Nm) of torque, if possible.
g. Reinstall the radome (as explained in
Steps 8d-e on page 10).
24
CAUTION
Linear Systems Only
Figure 39: Set Screws Securing the LNB to the Reflector
M4 Socket
Set Screws
LNB
Figure 40: LNB Skew Angle Adjustment
LNB
0
Negative
Skews
0˚ Skew
Reflector
Choke Feed
Positive
Skews