Comtech EF Data CDM-625 Installation And Operation Manual page 314

CDM-625 Advanced Satellite Modem
Forward Error Correction Options
1
1E-1
Uncoded
BPSK/QPSK
1E-2
Rate
1E-3
0.493
BPSK/QPSK
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure 7-23. ULL Codec – BPSK/QPSK Rate 0.493 and QPSK, Rate 0.654 and 0.734
2 3 4
Rate Rate
0.654 0.734
QPSK QPSK
Typical performance shown -
guaranteed performance curves
2 3 4
5 6 7
Comtech Ultra-Low-Latency
(ULL) Codec - Rate 0.493
BPSK/QPSK,
0.654 and 0.734 QPSK
are 0.3 dB to the right
5 6 7
7–36
MN-CDM625
Eb/No in dB
8 9 10 11
8 9 10
Revision 13
1 2
11 1 2