Service
98-175666-C Chapter 4: Setup of the antenna 4-37
much attenuation margin is left for the antenna cable. This indicates whether the
antenna cable and connectors are in good condition and well crimped.
The SAILOR XTR GX-R2 is calibrated now. If the calibration failed there will be a
message.
4.3.3 Manual OTC (BUC calibration) and GX modem access
This section describes manual OTC and modem access configuration.
Manual One Touch Commissioning (OTC)
When the modem starts up for the first time it will automatically register with the BUC
and perform P1dB compression on multiple frequencies and thereafter register with
the network. During the P1dB compression the antenna will point away from the
satellite and transmit on 950 MHz to 1950 MHz in 50 MHz steps. The BDU will show BUC
calibration on the DASHBOARD and the BDU display. This may take up to 10 minutes.
If a new cable calibration is made, the BDU displays the warning BUC calibration
outdated. Then you must make a manual OTC.
To make a manual OTC for the modem, do as follows:
1. Connect a PC to the service port on the front panel of the BDU.
2. Enter the web interface (via Firefox browser) and go to SERVICE > Modem.
3. At Modem access click the link.
Important
If input from the vesselʼs gyro compass is not available: Change the
heading input setting from Fixed to None at Heading – Input.
Fixed heading is not allowed for sailing vessels!
WARNING! For your safety: Active RF transmission may occur during an
OTC procedure. Software updates may also occur, yet the
system is in receive-only mode during such auto-updates.
Important
You must use the Internet browser Firefox.
Figure 4-25: Web interface: SERVICE > Modem
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