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a. Auto Mode
In the Auto mode, the ACU displays the skew angle calculated by the PCU. The
SDA-390’s default skew mode is auto. The SDA-390 automatically changes the
skew angle when the satellite is changed.
b. Manual Mode
The Installer or Operator can change the skew angle to the desired skew angle,
as shown below.
Figure 3-15 Setting the Skew Angle in Manual Mode
NOTE: ‘C:’ refers to the current skew angle. ‘A:’ refers to signal strength. ‘S:’
refers to the user setting the skew angle.
c. Trim
User can optimize the default skew angle to find a higher signal level, when
desired satellite has polarity offset. First of all, change the skew angle where
antenna can get higher signal than before using manual mode. And then select
the ‘TRIM’ and press the ‘MENU’. Lastly, select the ‘SAVE’ and press the ‘MENU’.
After save, the skew angle of desired satellite will be changed to new position.
NOTE: Polarity reference of satellite is the equator. However some satellite’s
polarity is other position not the equator for various reasons. And there is polarity
offset between calculated skew angle by PCU and true skew angle on the satellite
Summary of Contents for SUPERTRACK SDA-390
Page 7: ...3 Figure 2 2 Best Location II Figure 2 3 Antenna Blockages...
Page 11: ...7 Figure 2 7 Tighten the nuts from below...
Page 22: ...18 Figure 3 2 Antenna Control Unit Front Panel Figure 3 3 Antenna Control Unit Back Panel...
Page 36: ...32 Connection Staus Display of LCD Figure 4 2 Connection Status SDA 390 with PC...
Page 39: ...35 Figure 4 5 Satellite List Update Step 2...
Page 48: ...44 C N Graph You can see the graph of C N on Antenna State Figure 4 13 C N Graph...
Page 55: ...51...
