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For an optimal use of the capabilities of the DTTV, it is advisable to use an
universal LNB with independent outputs or an universal LNB with dual polarity (V/H)
and dual band (L/H), both with a switchable splitter for satellite, in order to be able of
distributing simultaneously signals in differents bands and polarisations.
It is not advisable to use an universal LNB with only one output and a satellite
splitter because in that case all the modules would be tuned at the same polarisation
(V or H) and band ( L or H).
3.4 Instruccions for installation
After identifying the elements that make up a DTTV installation, now we are going
to explain the basic procedure for installing and starting-up:
1. Assemble the DT-900 subrack. Follow the assembling steps described on the
manual supplied with the sub-rack.
2. Depending on your needs and available space, put the subrack on a wall or
inside a rack cabinet.
3. Install the modules inside the subrack and their connecting wires. Follow the
specific instructions provided with each module.
4. Before running the headend you should check that you are receiving input
signals properly (satellite TV, analogue, etc...).
5. Check that all modules are wired properly, especially the power cord from the
control module to the modules and the wiring between them.
6. Set the voltage selector switch at the voltage supplied by the mains in your
area (240 V or 120 V).
7. Start up the system using the switch placed at the rear of your control module.
8. Wait for a few seconds until the control module finishes sweeping and detects
all the modules. After that, all them will receive the default configuration data.
9. Verify that the modules detected by the control module and appearing on the
screen correspond to the ones installed. Also, you should check there is not
any error message on the screen (Note: On one hand, the modules DT-700
and DT-710 are not detected by the control module and on the other hand,
dual modules appear as two independent units).
10. Set up each module according to your needs.
11. If you have changed the configuration, you should save and restart the control
module in order to apply the changes on the modules.
12. At the end of the process all LEDs should be GREEN or off. If there is any
LED in RED, check the configuration and wiring of each module according to
the error description showed on the screen.
13. Connect the DTTV output to a receiver device, then tune the signal and check
you are receiving the TV programmes and services.
Page 10
CONTROL MODULE. DT-800
04-2012
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