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Appendix C • Installing the DW4020 Manually
106
1031484-0001 Revision 2
Antenna Pointing - Transmitter,
Manual
The manual cross-polarization function can be used to adjust the
antenna and peak the antenna’s transmit polarization for
maximum isolation. You can also use manual pointing to adjust
polarization after failing the automatic cross-polarization test.
1. Enter
C at the Installation Menu prompt. The Antenna
Pointing - Transmitter, Manual
screen appears.
Otherwise, the screen shows the current queue position until
the test can be run. When the
Test Status field shows Active
the test can be run. The result of the test is shown in the
Result: field, where a transmitter isolation value is reported.
2. Make small, one-degree or less changes in polarization while
observing the transmitter isolation. Peak the transmitter to the
highest possible transmitter isolation value.
3. Press Enter to return to the Installation Menu.
Antenna Pointing - Transmitter,
Automatic
Automatic cross-polarization (ACP) is used for a rapid Pass/Fail
test of the antenna’s transmit polarization adjustment. If you pass
ACP the unit is enabled and no further antenna pointing is
needed.
1. Enter
B at the Installation Menu prompt. The Antenna
Pointing - Transmitter, Automatic
screen appears.
Otherwise, the screen shows your current queue position until
the test can be run. (Sometimes a number of installers will be
pointing their antennas at the same time. You may have to
wait for the test to be run, and are placed in a queue until it
can be run.)
The result of the test is shown in the
Result: field. PASS
means the transmit modem will be enabled and the system
should be operational.
FAIL means the transmit modem will
be disabled and the dish pointing needs to be checked.
2. Whether you pass or fail, press
Enter to return to the
Installation Menu.
3. Enter
z to return to the Main Menu.
4. At the
Main Menu enter c. The Satellite Interface Statistics
Menu
appears (see Figure 83).
5. Enter
a. The Display Main Statistics screen appears. Confirm
the SQF is greater than 31 and that the transmitter is
available.
6. Enter
z to return to the Main Menu.