Hughes AN6-098P Manuale Utente

 

To prevent signal cross talk, you use a procedure known as 
Automated Cross Polarization (ACP) to isolate the transmit signal 
from the receive signal. ACP test functions are included in the 
installation software.

The ACP software operates in two different modes—manual or 
automatic. Manual mode gives real-time feedback of cross 
polarization isolation measurements while you adjust the antenna. 
Automatic mode takes a snapshot of the cross polarization 
isolation measurement.

ACP fine pointing consists of testing using both the manual and 
automatic modes and adjusting the antenna by small increments 
(if necessary) until it passes both the manual and automatic ACP 
tests.

Follow the general instructions below for the ACP tests. Use the 
installation software screens to initiate tests and see the test 
results.

First run a manual ACP test:

1. Lock down all antenna adjustment nuts and bolts.
2. Initiate the manual ACP test by selecting the manual cross 

polarization test type.

If the manual ACP test passes, stop the test and proceed to 
Automatic ACP test on page 68.

If the manual ACP test fails, let the test continue and follow these 
steps:

1. Make small, 1 

°

 or less changes in polarization while 

observing the transmitter isolation.

2. Peak the polarization to the highest possible transmitter 

isolation.

3. Tighten the polarization lockdown nuts.
4. Check the signal strength.

When the manual ACP test passes, stop the test and proceed to 
Automatic ACP test.