Televes TDT+, User Manual

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15
User manual TDT +
ENGLISH
d.- LNB powering
The next extended menu is the LNB
powering mode and the selection of the 22
KHz tone. There are 3 possible options, that
can be selected via the and buttons.
These select the powering voltage of the
LNB via the input signal of the TDT+
module. The 22 kHz tone is also chosen in
this way:
LNB not powered. No tone
LNB powered at 13 V. Tone activated
menus that are displayed below:
SCAN function SCAN function
enabled disabled
c.-Modulation format
By pressing the button, the following
menu appears. This lets you change the IQ
modulation format (normal or inverted)
using the and buttons.
Normal modulation Inverted modulation
5.2. - Extended menus
By pressing the button for approximately
3 seconds, you can access a series of
options that are less frequently used and
that are called the Extended Menus.
a.- Device address
The first option that appears in the extended
menus is the
selection of the device’s
address . For a headend to be remote
controlled, as indicated in section 7, each
controllable element must have a
unique
address .
It is the installer’s responsibility to make
sure that no addresses are repeated in
the control bus
.
The button lets us select the digit that we
want to modify, increasing or decreasing the
value using the using the
or . buttons.
The addresses available are from 1 ... 254.
For example, address 34:
b.- Automatic channel search
By pressing the button, we can access
the menu which lets us select the SCAN
function. This function carries out an
automtic channel search (see table) . To
enable or disable this function, we must use
the
and buttons, according to the
Satellite
Satellite Satellite
Payload
QAM
QAM QAM IF Priority
Symbol Rate
Modulation FEC Rate
Data Rate
Size
Symbol Rate Bandwidth
Ms/s Mb/s. MHz MHz
1/2 18.431373 64 3.3333 3.83 5
2/3 24.575163 64 4.4444 5.11 6
20.0 QPSK Viterbi 3/4 27.647059 64 5.0000 5.75 2
5/6 30.718954 128 4.7619 5.48 1
7/8 32.254902 128 5.0000 5.75 7
1/2 23.960784 64 4.3333 4.98 4
QPSK Viterbi
2/3 31.947712 128 4.9524 5.70 3
26.0
3/4 35.941178 256 4.8750 5.61 8
5/6 39.934641 256 5.4167 6.23 9
1/2 27.647059 64 5.0000 5.75 10
30.0 QPSK Viterbi
2/3 36.862745 256 5.0000 5.75 11
Automatic Transponders Search (SCAN function = ON)