Televes COFDM-QAM Manual De Instrucciones página 37

User manual
If we worked in channel mode, the selection
of the filter is made internally (based on the
table of channels selected), not appearing
this menu.
d.- Modulation format
If the button is pressed, the following
menu appears. This lets you change the IQ
modulation format (normal or inverted)
using the and buttons .
Normal
Inverted
e.- QAM symbol rate
If you press the button, you access the
fourth extended menu. This deals with the
real symbol rate in QAM, for example 3.6
Mbaud:
This information is useful when doing the
IRD programming where you need to know
the exact symbol rate of the QAM modula-
tion.
This is reading-only menu, and so the
and buttons are not operational .
37
COFDM-QAM
f.- Selection of channel / frequency mode
The following menu allows us to select the
frequency-channel mode for the input and
output frequency.
Frequency mode
Channel table 1
When toggling from frequency mode to
channel mode, the first channel (5) is selec-
,
ted automatically. When toggling from chan-
nel mode to frequency mode, the frequency
of the channel that was selected is displa-
yed.
There are 7 possible channel tables selecta-
ble using the and buttons :
Table 1: CCIR, New Zealand and Indonesia.
Italian channels.
Table 2: China, Taiwan and CCIR hyper-
band.
Table 3: M/N, Chile.
Table 4: Francia.
Table 5: Australia.
Table 6: South Africa, K1 (8 MHz), I (Ireland,
8MHz).
Table 7: Old URSS and OIRT.