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 s
hows
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.
