Televes COFDM-PAL Manuel D'utilisation page 45

User manual
The values that appear next indicate the
input audio level which is needed for the
modulation deviation to be ±50KHz for each
digit on the display of the programmer as
long as there is an input signal of 1KHz.
Display AL (dBm)
1 7
2 5
3 3
4 1
5 0
6 -1
7 -2 (1.7Vpp aprox.)
8 -3
9 -5
10 -7
11 -9
12 -11
13 -13
14 -15
In other words, if the input signal is 1KHz at
1.7Vpp we have to programme the value 6
in the AL menu of the programmer.
i.- Carrier ratio
The following menu lets us select the
carrier ratio (video to audio). The user can
select one of 4 possible values. For exam-
ple:
The relationship between the parameter and
the carrier ratio in dB is approximately:
1: -12 dB
2: -13 dB
3: -14 dB
4: -15 dB
45
COFDM-PAL
k.- Frecuencia/canal
The following menu lets us select the fre-
quency / channel mode for the output fre-
quency.
In this case there are 7 possible channel
tables that can be selected via the menu:
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.
The mode is selected by using the
buttons.
Frequency mode
Channel mode. Table 4 selected.
When going from frequency to channel mode,
&