Service
98-175666-C Chapter 4: Setup of the antenna 4-39
4.3.5 Line up
The SAILOR XTR GX-R2 has been tested at the factory and online on a live satellite link
to calibrate the TX polarization unit. You can fine-tune the TX polarization by doing a
line up.
To do the line up, do as follows:
1. Open an Internet browser and enter the IP address of the BDU (default IP address:
http://192.168.0.1).
2. Activate a VSAT profile.
3. Click Service > Line up. The antenna must be in tracking mode and point to the
satellite.
4. Wait until Status shows: Ready for lineup.
5. Click the button Activate Lineup and wait until the Status shows Antenna ready.
Follow the instructions from your service provider for Azimuth and Elevation
Offset.
6. Set the values as advised by the service provider:
• Azimuth
• Elevation
7. Follow the instructions from the service provider to make a P1dB compression test
(VSAT modem).
8. Click the button Deactivate to leave the line up procedure.
4.3.6 Fixed TX gain principle
The SAILOR XTR GX-R2 uses a TX IF gain concept. After calibration it provides a fixed
average gain from the TX-port of the BDU to the input of the BUC. Advantages of the
fixed TX IF gain principle are:
• Average TX IF gain independent of antenna cable length
1
Figure 4-27: Service - Line up
Note
The ship must not move during the line-up procedure.
1. You find the maximum allowed cable loss at Prerequisites on page 3-18.
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