Hughes AN6-098P Manuale Utente

 

Verify that the signal is still peaked by initiating an automatic 
ACP test. To initiate this test, select the automatic cross 
polarization test type. If the antenna passes the automatic 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 automatic 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 automatic 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 passes the automatic ACP test, but the signal 
strength drops more than 3 points after the test, you must repeat 
the fine adjustments for azimuth and elevation:

1. Repeat the fine adjustments for both azimuth and elevation to 

maximize the signal strength.

2. Repeat the automatic ACP test.
3. Check the signal strength.

If the antenna passes the automatic 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 still does not meet both criteria, repeat very small 
polarization, azimuth, and elevation adjustments and ACP tests as 
many times as necessary until you have peaked the signal and the 
antenna passes the automatic ACP test and signal strength is 
maintained within 3 points.

Important: When you are finished pointing the antenna, lock 
down all pointing adjustments. All adjustment points are shown 
in Figure 48 on page 60.