Televes COFDM-PAL NICAM Manual De Instrucciones página 40

User manual
whole screen but its contents are deformed.
To carry out a modification the
be pressed until the desired parameter flas-
hes. Then the parameter can be modified
just pressing the and
keys.
e.- 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.
f.- Configuration menu
Through this menu the RS-485 address of
key must
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 installer's responsibility to ensure
that none of the addresses in the control
bus have been doubled.
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-
Table 3: M/N, Chile.
Table 4: France.
Table 5: Australia.
Table 6: Southafrica, K1 (8 MHz), I (Ireland,
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
g. Scan transponder menu
This menu allows the user to repeat the
exploration of the input signal, for example,
if the names of the services haven't been
found. To force a new exploration just press
40
COFDM-PAL NICAM
band.
8MHz).
and
or
.
key must
.