5
Reception from 4 satellites
With a TRIAX MultiBlock for 4 LNBs it is possible
to receive programmes from 4 satellite positions
with one TRIAX TD/Basic dish, e.g. from the posi-
tions 1°W, 5°E, 13°E and 19°E.
As the signals from the satellites are reflected in
the dish, the LNBs must be placed opposite to
the position of the satellites in the sky and at a
distance between them corresponding to the angle
between the satellite positions. See fig. 1.
The MultiBlock can be adjusted to receive satel-
lites signals with a satellite spacing from 3 to 20°.
The MultiBlock can be used with TRIAX TD78/
Basic75, TD88/Basic85 and TD110 dishes.
Assembly and setting
The four LNB-holders are factory set for reception
of 1°W, 5°E, 13°E and 19°E in Denmark/Vejle with
a TD78 dish.
The LNB-holders are not fixed to the carrier beam,
as the LNBs must be mounted first (if they are not
already premounted).
First the LNB-holders for the LNBs 1 and 4 are
removed from the carrier beam (it may be a good
idea to mark their position).
The LNBs are mounted in the LNB-holders for 2
and 3, and in the two loose LNB-holders.
Then the LNB-holders 1 and 4 with LNBs are put
back on the carrier beam. See fig. 2.
The distance between LNB 1, 2, 3 and 4 and cen-
tre is indicated in table 1 (for TD78 and Basic 70),
table 2 (for TD88 and Basic 85) and table 3 (for
TD110). A precision positioning may be required.
See fig. 3.
The slope (Y) of the carrier beam is set accord-
ing to table 1, 2 and 3. This position is locked by
means of a self-tapping screw. See fig. 4.
The entire MultiBlock including LNBs can now
be mounted on the dish arm.
Setting of dish
If you are a Viasat customer, LNB 2 is connected
directly to the receiver by means of a cable or to a
satellite meter.
If you are a Canal Digital customer, LNB 1 is
connected directly to the receiver or to a satellite
meter.
Subsequently a program which is transmitted via
the provider is selected on the receiver (prefer-
ably with level indication). The dish is now set to
optimum reception, and then both azimuth and
elevation are securely tightened. The elevation is
shown in table 1 to 3.
It is a good idea to check the remaining 3 satellite
positions. A final adjustment may be required and
can be done by carefully pushing the LNB-holders
slightly too either side. Then the 4 LNB-holders are
screwed on by means of self-tapping screws. See
fig. 3.
IMPORTANT.
For additional support of the dish arm, a hole is
drilled through back structure and arm in which the
enclosed screw is mounted. See fig. 5. Remember
to put some fat/paintwork into the hole so that
moisture has no access.
We recommend that
only
the LNB’s delivered
with the Multiblock are used.
Please note that the total weight of the Multi-
block with LNBs must not exceed 1.1 kgs.
