16 / 36
V = 0°
V = -20°
V = +20°
0°
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)
• Use the allen wrench (
) supplied with the parabolic antenna
to slacken the two screws on each side of the
inclination scale
(elevation) on the
left and right
of the support.
• Then adjust the
inclination
(elevation) – the exact elevation
angle for your location can be found in the manual for the feed
system (LNB).
• When doing this, retighten
fi
rst just one of the bolts on the
inclination scale
fi
nger-tight (
).
Do not slacken the upper nuts
(
)
on the
bracket – these are factory-set to a fi xed
tightening torque.
b) Setting the direction (azimuth)
If you yourself are unable whilst performing the adjustments to read
the results of the alignment work on an
antenna meter
or
screen
connected to the satellite receiver, you may need an assistant for
the following steps. The precise alignment of the antenna can be
achieved only if a digital antenna meter is used. Ask your dealer
about this.
• Set the satellite receiver to a known channel so that you can
check that you have really “locked on” to the desired satellite.
• Now slightly loosen the wing nuts on the mast clamp (
).
•
Twist
the antenna so that it faces roughly south. Then slowly
twist the antenna about its central axis to left and right until the
best reception is obtained for the selected channel.
• Then tighten the
wing nuts
initially just enough to prevent the
antenna turning.
Scale V angle
Direction of rotation for po-
larisation angle (PW)
• 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 allen
wrench to slacken the bolt shown arrowed in the illustration on
the right.
