Satcube Ku, Руководство пользователя

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Satcube Ku User Manual v2.0-2019
SATCUBE PROPRIETARY
c)
Maximizing Signal Strength
Elevation and Polarization sensors are not susceptible to interference, but disturbances in the local
magnetic fields do affect the Azimuth compass. Therefore, users should first set Elevation and
Polarization to within 0.2° of the correct value and then sweep the Azimuth to find maximum signal
strength. If the terminal support surface is not level, fine tune the Elevation and check the
Polarization again after Azimuth adjustment. Step by step instructions:
•
Position the terminal to within 0.2° of the correct value for Elevation and Polarization and
within 2° for Azimuth. Lock the adjustment wheel in position. If correctly positioned, a C/N-
value should read visible, the azimuth gauge should be partially filled as seen in Figure 20.
•
To optimize signal strength, rotate the terminal slowly from side to side (as described in
section 6b) above. Watch how the C/N value and the level inside the azimuth gauge change
during the sweep (higher C/N and higher white bar equals stronger signal). Carefully tune the
azimuth until signal is maximized.
•
Fine-tune elevation to further maximize the signal if possible. As the terminal is rotated in
azimuth the elevation will change unless the surface is completely flat. Due to most surfaces
are not perfectly flat or level this has to be done in order to point the terminal correct.
•
If the previous steps were done properly the signal strength is now maximized, and the
terminal is ready for transmission.
•
Troubleshooting:
If the C/N-value is zero for every position during the sweep above, do one of the following:
i. Focus on maximizing the RQ value shown on the right during the sweep instead of
the C/N value, since this also indicates signal strength.
NOTE: the RQ value, stands for Receive Quality, comes from the terminal´s built in
receiver. It is related in the same way as C/N which means this value can also be
maximized when there is no C/N.
ii. Access the modem’s GUI as described in appendix A. In the modem’s GUI, find the
location which displays either a C/N or an SNR value. Rotate the terminal as described
above to maximize the displayed C/N or SNR value. Further instructions for using the
modem’s GUI are provided in the appendix and in the modem manufacturers
manual.
d) Transmission Criteria
There are a couple of different criteria for the terminal to allow transmission. If any of these have not
been fulfilled the terminal will not be allowed to transmit.
•
RQ value above the default of 1.
o
This value can be changed by going into the terminal web GUI settings as this value
will change depending on what carrier is pointed to.