9711QOR-86 C & Ku-Band TXRX
Antenna Specific Operation
16-7
4.
Press ENTER again to access the SATELLITE – SAT
longitude entry window and set the satellite longitude
to 160.0W and press the ENTER key.
•
The ACU will now calculate the azimuth,
elevation and polarization angles for the
desired satellite (from the ships latitude &
longitude position). In this case, Azimuth
217.8 degrees and elevation 50.6 degrees are
sent to the antenna pedestal PCU. The PCU
knows that the Ku-Band reflector is currently
at an azimuth of 60.8 degrees.
•
The pedestal will now start to rotate CCW
23.0 degrees of relative azimuth to orient the
C-Band reflector to a true azimuth of 217.8
degrees.
•
Polarization will start driving to the
appropriate mode and polarization angle if a
linear mode is selected.
•
Elevation of the C-Band reflector will initially
target 8 degrees higher than the calculated
elevation value of the satellite (58.6 degrees).
The PCU will pause there until azimuth &
polarization have completed driving and auto-
threshold has established a good OFF-satellite
AGC value. Then elevation will drive down to
the calculated angle (50.6 degrees).
•
If the antenna targeting is accurate enough,
the AGC will rise dramatically as the antenna
elevation drives down to the targeted
(calculated) value. When the AGC value
exceeds the Threshold value, Tracking will
take over and peak the pointing of the
reflector to maximize the satellite signal level.
•
If the antenna targeting is not quite accurate
enough for tracking to immediately take over,
the ACU will wait “Search Delay” number of
seconds and then start a search pattern to
find the satellite. During the search the AGC
value will rise dramatically as the antenna
nears the satellite. When the AGC value
exceeds the Threshold value, Tracking will
take over and peak the pointing of the
reflector to maximize the satellite signal level.
We are now tracking the C-Band satellite at 160W. The current
Azimuth of the C-Band reflector is 217.8 degrees and the
Elevation is at 50.6 degrees.
Содержание 9711QOR-86
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Страница 26: ...Site Survey 9711QOR 86 C Ku Band TXRX 2 8 This Page Intentionally Left Blank ...
Страница 70: ...Installation 9711QOR 86 C Ku Band TXRX 3 44 This Page Intentionally Left Blank ...
Страница 74: ...Basic Setup of the ACU 9711QOR 86 C Ku Band TXRX 4 4 This Page Intentionally Left Blank ...
Страница 78: ...Setup Ships Gyro Compass 9711QOR 86 C Ku Band TXRX 6 2 This Page Intentionally Left Blank ...
Страница 80: ...Setup Band Reflector Select 9711QOR 86 C Ku Band TXRX 7 2 This Page Intentionally Left Blank ...
Страница 86: ...Setup Home Flag Offset 9711QOR 86 C Ku Band TXRX 9 4 This Page Intentionally Left Blank ...
Страница 90: ...Setup Targeting 9711QOR 86 C Ku Band TXRX 10 4 This Page Intentionally Left Blank ...
Страница 96: ...Setup Searching 9711QOR 86 C Ku Band TXRX 11 6 This Page Intentionally Left Blank ...
Страница 122: ...Antenna Specific Operation 9711QOR 86 C Ku Band TXRX 16 12 This Page Intentionally Left Blank ...
Страница 126: ...Functional Testing 9711QOR 86 C Ku Band TXRX 17 4 This Page Intentionally Left Blank ...
Страница 142: ...Installation Troubleshooting 9711QOR 86 C Ku Band TXRX 18 16 This Page Intentionally Left Blank ...
Страница 188: ...9711QOR 86 Technical Specifications 9711QOR 86 C Ku Band TXRX 22 8 This Page Intentionally Left Blank ...
Страница 190: ...Drawings 9711QOR 86 C Ku Band TXRX 23 2 This Page Intentionally Left Blank ...
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