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c. Trim
You can optimize the default skew angle of currently tracking satellite to find a
higher signal level, when desired satellite has polarity offset (Optus D3 & C1have
a polarity offset) . First of all, change the skew angle where antenna can get higher
signal than before in the 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. (see Figure – 33)
NOTE
:
Polarity reference of satellite is the equator. However some satellite’s
polarity is set at the different position (equator is not used as a reference) for
various reasons. Thus, there might be the polarity offset between calculated skew
angle by PCU and true skew angle on the satellite that polarity. You may check
whether there is polarity offset or not on your satellite. If there is, skew angle
should be changed to get a higher signal (note set skew to a - number i.e. -41).
Figure 33 – Skew Trimming Step
NOTE:
the skew trimming function is available to the satellite currently in use only.
Improper skew trimming may deteriorate the antenna performance.
d. Reset
The skew angle on desired satellite will be changed to initial skew angle after
selecting the ‘RESET’ mode.
e. Save
To save the trim angle, press ‘MENU’ button after selecting the ‘SAVE’ mode.
f. EXIT
Press ‘EXIT’ to escape to upper menu.
3.3.7 Satellite Name Edit
