Comtech EF Data CDM-425 Installation And Operation Manual page 573

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 B-7. ULL Codec Rate 0.493 BPSK/QPSK and Rates 0.654 and 0.734 QPSK
Appendix B
2 3 4 5
Rate Rate
0.654 0.734
QPSK QPSK
Typical performance shown -
guaranteed performance curves
2 3 4 5
6 7 8
Comtech Ultra-Low-Latency
(ULL) Codec - Rate 0.493
BPSK/QPSK,
0.654 and 0.734 QPSK
are 0.3 dB to the right
6 7
B–11
CDM-425 Advanced Satellite Modem
Eb/No in dB
9 10 11
8 9 10 11
MN-CDM-425
Revision 0
12
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