• Press
to set the input frequency.
• Set the frequency offset shown in the display (e.g. “
– 1.8
”)
to less than 1 MHz by varying the input frequency using
the
buttons.
—> The ”
CN 12
” display e.g., indicates the signal to
noise ratio of the signal received
• Press the
button.
—> The “Testing the signal to noise ratio” – “
C/N
” menu
is
activated.
Testing the signal to noise ratio
In this menu you can estimate the quality of the input signal.
Bx 4A
12.0 dB
C/N
(+ 9.6) OK
1
Current signal to noise ratio
2
This value shows the difference between the quality
of the input signal and the threshold of the tuner at
this type of modulation.
At a value lower than “
5
” picture dropouts can occur.
3
If
“
OK
” is shown, the signal to noise ratio is ok.
If a value < 5 is shown under
2
the display changes
from “
OK
” to “
??
”.
In this case check the input signal.
Bx 4A
11836 -1.8
FREQ
CN 12
Å
Ï
/
Anzeige: Signalqualität
Display: Signal quality
F
Bx 4A
12.0 dB
C/N
(+ 9.6) OK
Bx 4A
11836 -1.8
FREQ
CN 12
Å
Ï
/
F
F
