RCA DIRECTV, Installer'S Manual

Page: 38 / 48

Final Installation
36 Chapter 3
e. If the signal is still not found, check to make sure the cables are connected
correctly. Also verify the azimuth, elevation and tilt angles for your
location and the plumbness of the mast using a carpenter’s level.
4. With the signal meter locked and displaying a value greater than 0, adjust the
azimuth until the signal meter value is maximized. Then further maximize the
signal meter value by finely adjusting the elevation angle. Make a note of the
elevation and the azimuth angles where signal meter was the highest. The
elevation angle can be read from the scale, the azimuth angle can be noted by
marking the mast and antenna bracket using a pencil, crayon, soap, etc.
5. Switch the signal meter to satellite located at 119 degrees west longitude (this
might also be represented on-screen as “Satellite 2” or “Satellite B”). If the
antenna, mast, and multi-switch have been installed properly, the signal meter
should be locked. In most of the U.S., the Tilt Adjustment should be fixed.
However, because of the large Tilt angle to the 119
°
satellite in Eastern Seaboard
states, a small amount of Tilt fine-tuning adjustment may improve the 119
°
signal
strength without significantly changing the 101
°
signal reading. For these states, the
following Tilt fine-tuning procedures are recommended:
a. Follow the alignment procedures above; tighten the Elevation and Mast clamp
bolts.
b. Fine-tune the Tilt Adjustment first by +3 degrees and then -3 degrees. Tilt is
optimized when you see the 101
°
signal reading essentially unchanged and the
119
°
signal strength improved by several points. Set Tilt to the optimized
point and tighten the Tilt nuts.
6. Once again, sweep the azimuth until the signal meter value for the satellite located
at 119 degrees west longitude is maximized, then adjust the elevation to peak the
reception for the satellite at 119 degrees west longitude. Make a note of the
elevation and azimuth angles.
7. Switch the signal meter to the satellite located at 101 degrees latitude to make sure
that signal meter is locked for both satellites.
8. Further maximize, fine-tune the signal strength on both satellites by adjusting the
elevation.
9. Carefully tighten all of the bolts, trying not to move the antenna on the mast while
you do so. When done tightening the bolts, make sure that signal meter is still
locked for all satellites.
10. Confirm the final signal-peak readings at all three satellite locations. Sat C (110
degrees, transponders 8, 10 and 12) should be aligned automatically.
Note that if the antenna moves or the signal meter values change significantly
lower while tightening the bolts, slightly loosen the elevation bolts (so they are still
somewhat snug), and adjust to maximize signal strength; then carefully tighten
them again.