12
8.2.1 Input parameters
IN > Input signal source
TP > Transponder frequency
Selection of the desired
SAT IF level from
SAT 1
Enter transponder frequency
to
SAT 4
or direct
input on the tuner using
SAT
LO > LNB Oscillator frequency
SR > Symbol rate
The required frequency will be
set automatically. The fre-
Q
quency can also set to
9750 ,
10600 , 5150 , 5950
or
OTHER
frequency.
Enter symbol rate
Search > Searching
Receiving conditions
If the tuner locks on the
The quality of the input signal can be
Transponder,
Tuner Locked
evaluated by using the bit error rate
is displayed in the upper field.
BER
and the signal-to-noise ratio
SNR
. These depend on the quality of
the reception conditions and the SAT
After pressing the
Search
signals.
button, the data is accepted
Recommendation: Bit error rate
BER
and the desired transponder
should be
≤ 1e-6.
is set.
The table below shows required signal-to-noise ratio levels for varying FEC (forward error correction). The
corresponding values of the FEC (forward error correction) have to be taken from the tables of the satellite
operators. For example, if the transponder has an FEC of 5/6, the
SNR
display must be at least 9 dB to
guarantee good signals.
FEC
gut
sehr gut
1/2
5-7dB
8-11dB
2/3
7-9dB
10-13dB
3/4
8-10dB
11-14dB
5/6
9-11dB
12-15dB
7/8
10-12dB
13-16dB
