4 Installing an ODU AIM User’s Manual
41
Task D. Tilt Adjustment (95°, 3-LNB, Slimline-5, and Slimline-5S (SWiM) ODUs
Only)
To perform the tilt adjustment:
1 Loosen the ODU’s tilt lock-down screws.
2 While monitoring the Es/No bar on the TILT ADJ screen, slowly rotate the ODU
around the tilt axis until the maximum Es/No value is reached.
3 Tighten the tilt lock-down screws.
4 Press NEXT to continue.
For 3-LNB ODUs only, the VERIFY AZ & EL screen appears following the tilt
adjustment to ensure the azimuth and elevation are still properly aligned. Adjust
the coarse azimuth and elevation if necessary following the steps in “Task B.
Coarse Azimuth Adjustment” on page40 and “Task C. Coarse Elevation
Adjustment” on page40.
Task E. Fine Elevation Adjustment (Slimline ODUs Only)
To perform the fine elevation adjustment:
1 Loosen the ODU’s elevation lock-down screws.
2 Turn the ODU’s elevation jack screw counterclockwise 2 turns.
3 On the FINE EL ADJ screen, press SET REF to set the reference value.
The AIM sounds a confirmation tone and displays the reference value.
4 Zero out the readout dial on the elevation jack screw.
5 Turn the elevation jack screw clockwise until the meter sounds a confirmation
tone and the displayed signal power matches the reference value.
Note: Es/No is a measure of the received carrier
strength relative to the strength of the received
noise, which is an indication of the quality of the
signal.
Note: It will take around four turns to reach the
reference value.
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