Sea Tel 5012-33, Installation Manual

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5012-33 Installation Manual Setup – Home Flag
7-2
Figure 7-2 Antenna stopped before the Bow
Figure 7-3 Antenna stops past the Bow
7.1.1.
In this example, I observe that the Home
position is short of the bow line.
You Observe “Home” Pointing is LEFT of the Bow-line:
I estimate that it is about 45 degrees away.
I target my desired satellite and record the
Calculated Azimuth to be 180.5.
I drive UP (I estimated that I will need to go
UP about 45 degrees) and finally find my
desired satellite.
Turn tracking ON to let the ACU peak the
signal up. When peaked, the Azimuth is 227.0
degrees.
I subtract Calculated from Peak (227 – 0180.5
= 46.5) and difference is 46.5 degrees.
I can calculate what the correct value for the
Home position of the antenna by subtracting
(because “home” was to the left of bow) this
difference of 46.5 from the bow line position
360.0. Therefore “home” should be 313.5
Relative.
I set, and Save, Home Flag to 46.5 using the Home Flag entry window, located on the System Configuration
screen. After I re-initialize the relative position of the antenna is now calibrated.
7.1.2.
In this example, I observe that the Home
position is past the bow line.
You Observe “Home” Pointing is RIGHT of the Bow-line:
I estimate that it is about 90 degrees.
I target my desired satellite and record the
Calculated Azimuth to be 180.0.
I drive DOWN (I estimated that I will need
to go DOWN about 89 degrees) and finally
find my desired satellite.
Turn tracking ON to let the ACU peak the
signal up. When peaked, the Azimuth is
90.0 degrees.
I subtract Calculated from Peak (180.0 –
90.0 = 90.0) and difference is 90.0
degrees.
I can calculate what the correct value for
the Home position of the antenna by
adding (because “home” was to the right of
bow) this difference of 09.0 to the bow line
position 000.0. Therefore “home” should
be 90.0 Relative.
I set, and Save, Home Flag to 90.0 using the Home Flag entry window, located on the System Configuration
screen (as shown in the previous section).
After I re-initialize the relative position of the antenna is now calibrated.
If there is a small amount of error remaining, I will use AZ TRIM in the Optimizing Targeting procedure to
correct it (as shown in the previous section).