Comtech EF Data CDM-425 Installation And Operation Manual page 569

1
1E-1
Uncoded
BPSK/QPSK
1E-2
Rate Rate
1E-3
0.533 0.631
QPSK QPSK
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure B-3. VersaFEC Codec Rates 0.533, 0.631, 0.706, and 0.803 QPSK
Appendix B
2 3 4 5
Rate Rate
0.706 0.803
QPSK QPSK
Typical performance shown -
guaranteed performance curves
2 3 4
6 7
Comtech VersaFEC® Codec
Rate 0.533, 0.631, 0.706,
and 0.803 QPSK
are 0.3 dB to the right
5 6 7
B–7
CDM-425 Advanced Satellite Modem
Eb/No in dB
8 9 10 11
8 9 10 11
MN-CDM-425
Revision 0
12
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