12
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
8.2.1 Input parameters for SAT reception
DVB > Input signal
TP > Transponder frequency
Choose the kind of signal
Enter transponder frequency
-> If DVB-T/T2 or DVB-C
selected, please skip to section
8.2.2 Input parameters for the
terrestrial range
Auto > LO frequency
SR
> Symbol rate
The required frequency is set
Enter symbol rate
automatically, but can be set to
09750 , 10600
or another
OTHER
frequency.
Search > Scan
Tuner Locked
After pressing the
Search
button,
If the tuner locks on the
the data is accepted and the desired
transponder,
Tuner Locked
transponder is set.
is displayed in the upper field.
Reception conditions (DVB-S/S2)
The quality of the input signal can be evaluated by using the bit error rate
BER
and the
signal-to-noise ratio
SNR
.
These depend on the quality of the reception conditions and the SAT signals.
Recommendation: Bit error rate
BER
should be ≤ 1e-6.
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. If e.g. the transponder has an FEC of 5/6,
the
SNR
display must be at least 9 dB to guarantee good signals.
good
best
