Comtec CDM-840 Installation And Operation Manual page 220

CDM-840 Remote Router
Appendix B
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-7. VersaFEC Codec – QPSK, Rates 0.533, 0.631, 0.706 and 0.803
2 3 4
Rate Rate
0.706 0.803
QPSK QPSK
Typical performance shown -
guaranteed performance curves
2 3 4
5 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–10
MN-CDM840
Eb/No in dB
8 9 10 11
8 9 10 11
Revision 3
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