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Aligning the Antenna
The antenna must be exactly aligned towards the satellite in
respect of both the direction (azimuth) and also the inclination
(elevation). For multi-feed applications the antenna should be
aligned towards the satellite which is transmitting the weakest
signal.
a. Adjusting the inclination (elevation)
–
When tilting the antenna about the elevation axis, the 6
bolts
A
must be slack. Slacken them using the hexagon
key supplied with the parabolic antenna.
–
If whilst performing coarse or preliminary setting of the
elevation angle you tilt the antenna slightly by hand you
can turn the nut
B
(for fi ne adjustment) more quickly.
–
Now adjust the
inclination
(elevation) – the exact eleva-
tion angle for your location can be found in the manual
for the feed system (LNB). Set this angle according to the
scale (10° to 50°). When doing this, the relevant scale gra-
duation on the clamp must be in line with the edge
C
of
the refl ector retaining plate.
–
When doing this, tighten the bolts
A
slightly.
Direction of rotation for polarisation angle (PW)
Direction of rotation for angle V for tilting part
e. Polarisation pre-setting
●
One feed system (monofeed)
Set the polarisation angle on the feed system according to
the value in the table for your location and the position of the
satellite from which the signal is to be received (see LNB user
instructions). For this the tiltable adapter plate remains in the
zero position (see diagram on the right).
●
Multiple feed systems (multi-feed)
To optimise the multi-feed reception, the tiltable support
“H” should be tilted to the angle “V” according to the table
attached to this document.
The polarisation angle on the respective feed system must be
set according to the following formula.
PW
NEW
= PW
TAB
- V
PW
NEW
= polarisation angle to be set
PW
TAB
= polarisation angle of the selected satellite according
to the table in the LNB user instructions
V = setting angle of the support according to the selected
satellite combination of the attached table
With the settings and the calculation, pay attention to
preceding signs!
In order to be able to tilt the support you must fi rst use the
hexagon key to slacken the bolt shown arrowed in the illus-
tration on the right.
