Comtech EF Data CDM-570A Installation And Operation Manual page 486

1
1E-1
1E-2
1E-3
1E-4
Combined sync
1E-5
threshold, demod
and Viterbi
Decoder, Rate 1/2
1E-6
1E-7
Typical performance
1E-8
1E-9
1
BER
Figure B-4. Viterbi with Concatenated RS 220, 200 Outer Code
FEC (Forward Error Correction) Options
CDM-570A/570AL Satellite Modem with Optional Packet Processor
2 3 4
Uncoded BPSK/QPSK
Sync
threshold,
Rate 3/4
Sync
threshold,
Rate 7/8
2 3 4
5 6 7
Specification
Limit Rate 1/2
and 220,200
Specification
Limit Rate 3/4
and 220,200
5 6 7
B–22
Eb/No in dB
8 9 10
Viterbi with
concatenated
RS 220,200
Outer Code
Outer Code
Outer Code
Specification
Limit Rate 7/8
and 220,200
Outer Code
8 9 10
MN-CDM570A
Revision 5
11 12
11 12