Comtech EF Data CDM-600/600L - Manual (Page 139)

CDM-600/600L Open Network Satellite Modem Revision 3
Forward Error Correction Options MN/CDM600L.IOM
6–19
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
Specification limit
Rate 2/3 Coding and
219, 201 RS Outer Code
Uncoded BPSK/QPSK
Typical
Performance
Specification
limit, Rate 2/3
Coding
1 2 3 4 5 6 7 8 9 10 11 12
BER
8-PSK/TCM Rate 2/3
Decoding, with and
without 219, 201 RS
Outer Code
Perf ormance with CDM-600
Firmware Version 1.1.5
(or higher)
Figure 6-7. 8-PSK/TCM Rate 2/3 with and without concatenated Reed-Solomon Outer Code