“NEO” TV SATELLITE ANTENNAS
87
www.glomex.it
ENGLISH
6.5 SKEW CALIBRATION (MANUAL)
Such a paragraph concern the GLOMEX models
with code TV8001N, V8100N, V9104N, V9104N/
DCSS, V9801N, R9804N and R9804N/DCSS.
The LNBs installed in GLOMEX TV satellite
antennas are developed to receive the satellites
that transmit in linear polarization (Europe) and
not require any calibration during
Installation to optimize the alignment of the LNB
with the satellite you want to receive.
When you are at the same longitude of the satel-
lite, its horizontal and vertical signals are aligned
with the horizon. When the satellite is east or west
of your position, the signal of the satellite will
appear as clockwise or counterclockwise shifted.
Both the horizontal and the vertical signal will be
shifted by the same angle, and therefore they will
always be perpendicular to each other.
The degree of rotation will depend on the distance
to the east or to the west between the position of
the antenna and the position of the satellite, and on
your distance from the equator.
Once you move to an area with a longitude more
than +/- 10° from the previous position, the LNB
must be manually adjusted in order to obtain the
best possible signal.
Antennas are delivered with the LNB optimized
for an area with longitude 12° East while receiving
satellite 13° East.
For the adjustment of the LNB, proceed as follows:
- loosen the screws on the radome and remove it
from the base;
- loosen the 2 screws fastening the LNB to the
dish (see
Fig. 35
) and manually move the dish,
using the parameter of signal quality of the dig-
ital receiver in use as a reference for correct
calibration (please refer to the receiver’s man-
ual). Calibration does not need to be changed if
the boat remains in the same area and receives
transmission from the same satellite.
S
WARNING
While adjusting the SKEW, please make sure not
to disconnect the two sensor cables fastened to
the LNB.
Once the desired adjustment has been carried out,
tighten the screws, position the radome onto its
base again and tighten the fastening screws again.
NOTA:
Incorrect adjustment of the screw may
cause a number of problems: from no reception
of some channels up to impossibility to find the
selected satellite.
6.6 AUTOMATIC SKEW CALIBRATION
Models V9804NSKEW and V9804NSKEW/DCSS
are fitted with automatic SKEW calibration. The
Glomex innovative compensation system which,
according to the geographic position, directly
operates on the LNB, automatically changing its
inclination and optimizing polarization to obtain
the best possible signal quality.
NOTA:
Automatic SKEW calibration is based
upon the GPS inside the antenna. When turned
on for the first time, the antenna might take up to
5 minutes to complete calibration.
Fig. 34
Fig. 35
