Publicidad
Idiomas disponibles
Idiomas disponibles
User manual
5.2.- EXTENDED MENU
key for more than three
By pressing the
seconds, you can access a series of options
that are less frequently used and that are
called extended menus.
a. COFDM parameters menu
The parameters of the COFDM transmission
are displayed in this menu:
- FFT size (number of carriers): 8K-2K.
- Constellation (type of modulation):
QPSK - 16 QAM - 64QAM.
- Guard interval: 1/4, 1/8, 1/16 o 1/32
- Viterbi rate (coderate): 1/2, 2/3, 3/4, 5/6
o 7/8.
The unit will display "Unlocked!" when it is
unable to demodulate the input signal.
b. Configuration menu
Through this menu the address of the unit
can be selected (so that it can be controlled
by the Headend Controller CDC). To be able
to control a headend remotely each device
should have a different address (1 to 254).
It is the responsibility of the installer to make
sure that there are not duplicated CDC
addresses in the control bus.
From this menu you can switch between fre-
quency and channel table mode.
The following channel tables are available:
Table 1: CCIR, New Zealand and Indonesia.
Italian channels.
Table 2: China, Taiwan and CCIR hyper-
band.
Table 3: M/N, Chile.
44
COFDM QAM - TS PROC
Table 4: France.
Table 5: Australia.
Table 6: Southafrica, K1 (8MHz), I (Ireland,
8MHz).
Table 7: Former URSS and OIRT.
To carry out a modification the
be pressed until the desired parameter flas-
hes. Then the correspondent parameter can
be modified by pressing
and
c.- Operating mode selection menu
PROCESA TS
Proc
FPGA:1.04
In this menu, the user may select the unit's
operating mode.
Transp. Transparent mode: no processing
occurs in the transport stream. The
output transport stream is the
same as the input stream. The
QAM output baud rate depends on
the COFDM input signal and the
selected modulation order, and
cannot be modified by the user.
key must
.
Publicidad
