13
Receiving 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.
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
