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9502 User Guide
3004146-0001 Rev H
Pointing the ODU
Determine the azimuth and elevation for the look angle to the
satellite in advance of the installation by using the approximate
latitude and longitude of the site in a simple satellite pointing
application or specially marked map. This is the preferred mode as
it simplifies the install and may be critical data for choosing the
site if there are multiple potential locations to mount the UT in
wooded, mountainous or built-up areas.
Alternatively, you can get the azimuth and elevation angle by
powering up the UT, allowing it to get a GPS fix and then
checking the pointing information on the 9502 home webUI page.
In order to speed up getting the initial GPS fix, while you are in
pointing mode you should lay the ODU flat with a clear view of
the sky first so that it can see as many GPS satellites as quickly as
possible. Once you get the initial GPS fix (GPS LED solid green),
then you can point the ODU to the Inmarsat satellite.
If you short press the function button to enter pointing mode, all
three LEDs start to blink, indicating that the terminal is in pointing
mode.
To aid in pointing, you can use two different methods:
1.
You can use the 3.5mm jack to connect stereo speakers or
a headset in order to hear the tones for pointing. As the
signal strength increases, the tone pitch will get higher and
faster.
2.
You can also use the 3.5mm jack to connect a 3.5mm
stereo plug that has two bare wires exposed. Touching the
two exposed wires with voltmeter leads you can see the
voltage readings from 2.5V to 3.2V as you are pointing.
The higher the voltage the better the ODU is pointed. A
voltage reading of approximately 2.9V equates to a good
signal level of 50dB.
You can also monitor the signal strength by hooking up a
laptop/PC to the USB port and monitor it from the webUI (see
Figure 4-12). Access the webUI by opening a browser (FireFox,
Safari or IE) and typing in the local IP address of the terminal
192.168.128.100
