Application Note
10/29/2015
Applied
Instruments,
Inc.
•
5230
Elmwood
Ave.
•
Indianapolis,
IN
USA
46203
•
Tel
(317)
782
‐
4331
•
www.appliedin.com
Page
2
Rough Alignment of Tilt / Skew of dish on 119°W Satellite
To check the status of the 119° satellite:
Press the LNB soft-key again to switch to LNB2. LNB2 is for the 119° satellite.
Adjust the tilt / skew of the dish (rotate dish about a point) to optimize the alignment by maximizing the
signal level (left bar graph), signal quality (right bar graph), and obtaining a LOCK on the 119° satellite.
Align antenna until strongest signal level and quality have been reached.
After you see LOCK, press ID soft-key (located on middle left side of LCD screen) and verify
that the 119 satellite has been found.
Dithering (Fine-Tuning) of Azimuth/Elevation of dish on 101°W Satellite
Complete the dithering/fine tuning process to ensure that you’re aimed at the center of the beam,
adjusting the azimuth and elevation of the dish using the fine adjustment screws while looking at the 101
satellite, as directed by DIRECTV. This should ensure good signal reception from all five satellites (99,
101, 103, 110, 119) if your mast/pole is plumb.
Dithering (Fine-Tuning) steps:
1) Ensure that your LNB power soft-key (located near middle right area of LCD screen on meter is
tuned to LNB1 (the 101 satellite).
2) Using the Azimuth fine-tuning screw bolt, turn clockwise and counter-clockwise until you get the
highest signal level (meter’s left bar graph) and signal quality (right bar graph) on the 101
satellite.
3) Using the Elevation fine-tuning screw bolt, turn clockwise and counter-clockwise until you get the
highest signal level (meter’s left bar graph) and signal quality (right bar graph) on the 101
satellite.
4) Record the signal level (i.e. with pen and paper) that is displayed on meter’s left bar graph for 101
satellite.
5) Set the Elevation plastic dial to zero.
6) Using the Elevation screw bolt, turn 4 full turns counter-clockwise, record the signal level
(displayed on meter’s left bar graph).
7) Rotate the bolt clockwise counting the number of turns until the same signal level is reached.
8) Divide this number of turns by 2.
9) Turn the Elevation plastic dial to zero.
10) Rotate the Elevation screw counter-clockwise by the divided number of turns
11) Tighten the Elevation bolts down. The signal level should be the same or higher than with your
rough alignment.
12) Record the signal level (i.e. with pen and paper) that is displayed on meter’s left bar graph for 101
satellite.
13) Set the Azimuth plastic dial to zero.
14) Using the Azimuth screw bolt, turn 4 full turns counter-clockwise, record the signal level.
15) Rotate the fine-tuning bolt clockwise counting the number of turns until the same signal level is
reached.
16) Divide this number of turns by 2.
17) Turn the Azimuth plastic dial to zero.
18) Rotate the Azimuth screw counter-clockwise by the divided number of turns
19) Tighten the Azimuth bolts down. The signal level should be the same or higher than with your
rough alignment.
