Hughes AN6-074S, Руководство по установке

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Chapter 5 • Pointing the antenna
1036469-0001 Revision D
47
If the manual ACP test passes, stop the test and proceed to
Automatic ACP test on page 47.
If the manual ACP test fails after you adjust the elevation, let the
test continue and follow these steps:
1. Mark the present azimuth position so you can return to it.
2. Loosen the three nuts on the canister just enough so you can
change the azimuth.
3. Observe the signal strength while you make very small
adjustments—1/16-in. or less movement of the elevation
bracket on the mast.
4. Peak the azimuth to the highest possible signal strength
value.
5. Tighten the three nuts on the canister flange to lock down the
azimuth adjustment.
6. Run the automatic ACP test, as explained in Automatic ACP
test .
Automatic ACP test Run the automatic ACP test:
1. Initiate the automatic ACP test.
Select the automatic cross polarization test type.
2. Check the signal strength.
If the antenna passes the ACP test and maintains signal strength
within 3 points on the signal strength scale, it is pointed and ready
to be registered.
If the antenna fails the ACP test, follow these steps:
1. Initiate a manual ACP test.
2. When the test starts, make small, 1
°
or less changes in
polarization while observing the transmitter isolation.
3. Peak the polarization to the highest possible transmitter
isolation.
4. Tighten the polarization lockdown nuts.
5. If the antenna passes the manual test, stop the manual test and
run the automatic ACP test again.
6. Check the signal strength.
If the antenna passes the ACP test and maintains signal strength
within 3 points, it is pointed and ready to be registered.