Comtech EF Data CDM-600/600L - Manual (Page 142)

CDM-600/600L Open Network Satellite Modem Revision 3
Forward Error Correction Options MN/CDM600L.IOM
6–22
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1 2 3 4 5 6 7 8 9 10 11 12
Eb/No in dB
Uncoded
BPSK/QPSK
Comtech Turbo Product Codec
Rate 1/2 QPSK/OQPSK
Rate 0.95 QPSK/OQPSK
and 8-PSK
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 0.95
8-PSK
Spec limit
Rate 0.95
QPSK/OQPSK
Spec limit
Rate 1/2
QPSK/OQPSK
Typical
performance
Uncoded
8-PSK
Performance with CDM-600
Firmware Version 1.1.5
(or higher)
Figure 6-10. Rate 1/2 QPSK, Rate 0.95 QPSK and Rate 0.95 8-PSK