Sea Tel 6009-33, Installation And Operation Manual

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Set-up & Configuration 6009-33 Broadband At Sea
4-1
4. Set-up & Configuration
The components in the system will have been configured with IP Addresses at the factory. The Front Title Page of this manual
has a list of recorded IP address information, serial number information and Modem software version.
In the paragraphs below you will verify the configuration of these components, which will also verify that each of them are
communicating. If one of the components has been replaced, it will have to be configured correctly to properly operate as part
of this system.
Contact Sea Tel for the Internet Service Provider (ISP) Network Operation Center (NOC) ASSIGNED IP address, SubNet Mask
and the Primary & Secondary DNS addresses if they have not been previously provided to you, or if you have changed
providers.
4.1. Operator Settings
Refer to the Operation chapter of this manual to set the Ship information. Latitude and Longitude should
automatically update when the GPS engine mounted above decks triangulates an accurate location, but you may enter
this information manually to begin. If your gyro source is providing Heading information in any format other than
NMEA-0183 format, you will have to enter in the initial Ship’s Heading position, the Gyro Compass will then keep the
ACU updated.
Set the Satellite information, for the satellite you will be using. The receiver settings are especially important. At this
point you should be able to target the desired satellite. Continue with the setup steps below to optimize the
parameters for your installation.
4.2. Optimizing Targeting
First, assure that all of your Ship & Satellite settings in the ACU are correct. Target the desired satellite, immediately
turn Tracking OFF, and record the Azimuth and Elevation positions in the “ANTENNA“ display of the ACU (these are
the Calculated positions). Turn Tracking ON, allow the antenna to “Search” for the targeted satellite and assure that it
has acquired (and peaks up on) the satellite that you targeted. Allow several minutes for the antenna to “peak” on the
signal, and then record the Azimuth and Elevation positions while peaked on satellite (these are the Peak positions).
Again, assure that it has acquired the satellite that you targeted!
Subtract the Peak Positions from the Calculated Positions to determine the amount of Trim which is required. Refer to
the ACU Setup information to key in the required value of Elevation Trim. Continue with Azimuth trim, then re-target
the satellite several times to verify that targeting is now driving the antenna to a position that is /- 1.0 degrees
of where the satellite signal is located.
EXAMPLE: The ACU targets to an Elevation position of 30.0 degrees and an Azimuth position of 180.2 (Calculated),
you find that Peak Elevation while ON your desired satellite is 31.5 degrees and Peak Azimuth is 178.0. You would
enter an EL TRIM value of –1.5 degrees and an AZ TRIM of +2.2 degrees. After these trims values had been set, your
peak on satellite Azimuth and Elevation displays would be very near 180.2 and 30.0 respectively.
4.3. Optimizing Auto-Polarization TX/RX
If your system is fitted with a circular feed you do not need to optimize the polarity angle and can skip this procedure.
This procedure optimizes the linear polarization of the feed. Verify that tracking is ON and that the antenna is peaked
on your targeted satellite (targeting calculates the azimuth, elevation and polarization angles). Assure that you are in
Auto-Pol mode (POL TYPE parameter in the ACU is set to 0072) and set your satellite modem (or spectrum analyzer) to
view its signal level display. Go to the TX POLARITY parameter in the Setup menu of the ACU and set this parameter
to your assigned Transmit polarity (Horizontal or Vertical). Go to the POL OFFSET parameter in the Setup menu of the
ACU.
Default setting is 0040 and may be incremented, or decremented, to adjust polarization while in Auto-Pol mode. Each
increment equals one degree of polarization rotation (0048 = +8 degrees), decrement below 40 for minus polarization
(0032 = -8 degrees). Press the UP arrow to increment or the DOWN arrow to decrement the value and then hit the
ENTER key to adjust the feed to the new value. Allow 30 to 60 seconds between increments or decrements to allow
time for feed assembly to drive to new position
During commissioning, under guidance from the network operation center, you will be adjusting to minimize the effect
of your transmission on the opposite polarization which maximizes your Cross-Pol isolation. Contact your satellite
provider to help you (over the phone) to optimize the polarity angle for maximum Cross-Pol isolation (this optimizes
PRELIMINARY