Service
98-175666-C
Chapter 4: Setup of the antenna
4-36
calibration has completed. In case of failure, see the table in the following section
for a description of error codes during calibration.
The following table shows the error codes that might be displayed during a
calibration.
Cable calibration
You must make a cable calibration. It is also recommended to make a cable calibration
when servicing the system to check if the antenna cable is still in good order. If the
attenuator margin changes by 2 dB or more after a cable calibration, it is
recommended to do a P1dB compression measurement to verify that the VSAT
modem configuration is correct.
1. Select
Service > Calibration
.
2. In the section
TX cable calibration
, select the
Type
:
• Cable calibration: The system will make a complete cable calibration
(recommended).
• Disable TX cable calibration: The gain is set at a maximum and no cable
calibration is made. It is up to the modem to make the necessary adjustments.
3. Click
Start
.
4. Wait typically for 2 minutes for the calibration to finish. A message is displayed
when the calibration has been completed successfully.The screen shows how
Important
It is strongly recommended to verify the result of a calibration
performed with user defined data. This can be done by making a new
calibration on a different satellite and verify that the resulting
Azimuth calibration value differs less than one degree.
Error
code
Explanation
1
The elevation of the selected satellite is too low. Select another
satellite.
2
The elevation of the selected satellite is too high. Select another
satellite.
4
The calibration values could not be saved. Possibly due to defective
hardware.
5
The antenna could not point with sufficient precision. Check that
the antenna is mounted in a stable way. Other possible causes
might be electrical or mechanical faults.
6
No signal received. Check that there is free line of sight. Try again or
try with another satellite.
7
RF setup error, e.g. missing or invalid TX frequency.
8
Invalid satellite, e.g. satellite not visible.
9
Unknown error
Table 4-21: Possible error codes during calibration