Calibration
98-166784-A
Chapter 6: Configuration
6-11
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Configuration
4. Click
SERVICE > Calibration
.
5. Select
Enable
in the section
Azimuth calibration
(active satellite profile). To be able
to use this feature there must be a valid satellite profile and you must activate it in
SETTINGS
>
Satellite profiles
.
6. Click
Apply
.
7. Switch on the PIU.
6.3.2
Operation in gyro-free mode
If input from a gyro compass is not available (Heading input: none), information from the
GPS position is used when searching for a satellite. If the antenna does not have ship
heading input from the vessel's gyro compass, the azimuth direction of the satellite is not
known. In this case the antenna will start a 360 degrees sky scan and scan until it finds a
satellite. The search time to find the satellite and start tracking is therefore increased
considerably. If the ship is on a steady course and sails at a speed over ground above 5 kn,
the system can use an estimated heading from the current GPS position. This will reduce
the search time, but it will still be a longer search time than with heading input present.
If the system loses the signal from the satellite, for example due to blockage, and the
duration of signal loss is longer than approximately 1 minute, the system without heading
input must do a new sky scan to find the satellite when the antenna is out of blockage.
Figure 6-7: Web interface: SERVICE, Calibration (example)
