Chapter 7 • Pointing the antenna
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73
Isolating the transmit
signal
To prevent any overlap between the transmit and receive signals,
you must 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 test software operates in two modes—manual and
automatic. Manual mode provides real-time feedback of
cross-polarization isolation measurements while you adjust the
antenna. Automatic mode takes a snapshot of the current
cross-polarization isolation measurement.
ACP fine pointing tests the antenna position using both the
manual and automatic modes, and adjusts the antenna in small
increments (if necessary) until it passes both the manual and
automatic ACP tests.
The instructions provided in the following sections are general
instructions only. The installation software screens initiates the
tests and walks you through the actual procedures.
Manual ACP test
To run a manual ACP test:
1. Lock down all antenna adjustment bolts.
2. Initiate the manual installation software ACP test and select
the Manual cross polarization test.
If the manual ACP test passes, stop the test and proceed to
Automatic ACP test on page 74.
If the manual ACP test fails, let the test continue and follow these
steps:
1. Make small, 1
°
or less changes in the tilt angle while
observing the transmitter isolation.
2. Peak the tilt angle to the highest possible transmitter
isolation.
3. Tighten the tilt lockdown nuts.
4. Check the signal strength.
When the manual ACP test passes, stop the test and proceed to
Automatic ACP test.
Summary of Contents for AN6-098P
Page 6: ... Contents vi 1037312 0001 Revision B ...
Page 10: ... Tables x 1037312 0001 Revision B ...
Page 22: ...Chapter 1 Overview 6 1037312 0001 Revision B ...
Page 46: ...Chapter 3 Assembling the antenna 30 1037312 0001 Revision B ...
Page 58: ...Chapter 4 Installing a J type radio assembly 42 1037312 0001 Revision B ...
Page 72: ...Chapter 6 Cabling and connections 56 1037312 0001 Revision B ...
Page 92: ...Chapter 7 Pointing the antenna 76 1037312 0001 Revision B ...
Page 94: ... Acronyms and abbreviations 78 1037312 0001 Revision B ...