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Satellite identifier: GSC, NID, Orbital position (DVB-S, DVB-S2)
3 on page 5-8.
6. Click Apply to save the settings for this satellite profile for calibration. The system is
ready for the azimuth calibration.
7. Click Start to start the azimuth calibration.
5.3.3
Cable calibration
Important
1. In the section TX cable calibration, select the Type:
• Cable calibration: The system will make a complete cable calibration
(recommended).
• Disabled: The gain is set at a maximum and no cable calibration is made. It is up to
the modem to make the necessary adjustments.
2. On the page SERVICE > Calibration click Start in the section TX cable
calibration.
3. Wait for the calibration to finish. After finished calibration a message with the result
of the calibration is displayed in the field Result.This screen shows how much
attenuation margin is left for the antenna cable. This indicates whether the antenna
cable and connectors are in good condition and well crimped.
It is recommended to make a cable calibration when servicing the system to check if
the antenna cable is still in good order.
4. After the azimuth and cable calibration switch on the modem. It will automatically
make a BUC calibration and is then ready.
5. When commissioning is completed, test all subscribed services, see Installation check
list: Functional test in harbor on page 6-3.
Important
1. Use Orbital position and NID if you want to use NID or orbital position or other KA band
satellites with DVB-S2 support. The DVB symbol rate must be >5 Ms/s. For NID use
preferably a unique NID (ONID). An azimuth calibration without NID can be useful in
regions where the satellite operators do not broadcast NID (US, China, Australia etc.). For
NID=0 the NID is not used when checking the satellite link. For NID 1 to 65535 the
supplied NID is matched against the Network ID broadcast by the satellite. For orbital
position the supplied longitude is matched with the orbital position broadcast by the
satellite. Not all service providers broadcast the orbital position.
Make sure that the modem is not switched on at this point. The modem can
be switched on after the cable calibration.
Make sure that Heading, Mode on the page SETTINGS > Navigation is
set to Fixed or External.
Figure 5-9: Web interface: SERVICE, Calibration, cable attenuator margin
If there is no input from the vessel's gyro compass: Change the heading
input setting from Fixed to None at Heading – Input.
Fixed heading is not allowed for sailing vessels!
:
Calibration
1
. See also Table 5-
5-11
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